Report of Foreign Issuer (6-k)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 UNDER
THE SECURITIES EXCHANGE ACT OF 1934

For the month of June, 2015

Commission File Number 001-34175

ECOPETROL S.A.

(Exact name of registrant as specified in its charter)

N.A.

(Translation of registrant’s name into English)

COLOMBIA

(Jurisdiction of incorporation or organization)

Carrera 13 No. 36 – 24

BOGOTA D.C. – COLOMBIA

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x Form 40-F ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1)

Yes ¨ No x

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7)

Yes ¨ No x

Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ¨ No x

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- N/A

Ecopetrol S.A. hereby designates this report on Form 6-K as being incorporated by reference into its registration statement on Form F-3, as filed with the SEC on July 26, 2013 (File No. 333-190198).

Exhibits

Exhibit 99.1 Interim Consolidated Financial Statements for the three-month periods ended March 31, 2015 and 2014, as at March 31, 2015, December 31, 2014 and the opening statement of financial position at January 1, 2014.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Ecopetrol S.A.

By:	/s/ Alberto Vargas Peñalosa
	Name:	Alberto Vargas Peñalosa
	Title:	Acting Chief Financial Officer

Date: June 23, 2015

RECENT DEVELOPMENTS

The following discussion of Ecopetrol S.A.’s (which we refer to as “Ecopetrol,” the “Company” or “we”) results of operations for the three-month periods ended March 31, 2015 and 2014 should be read in conjunction with our annual report on Form 20-F for the fiscal year ended December 31, 2014, as filed with the U.S. Securities and Exchange Commission (which we refer to as the “SEC”) on April 28, 2015 (which we refer to as the “Form 20-F”) and, in particular, “Section 3—Business Overview” and “Section 4—Financial Review” in the Form 20-F, and with our unaudited interim financial statements as of March 31, 2015 as filed with the SEC as Exhibit 99.1 to this Form 6-K (which we refer to as the “unaudited interim financial statements”). We hereby designate this report on Form 6-K as being incorporated by reference into our registration statement on Form F-3, as filed with the SEC on July 26, 2013 (File No. 333-190198).

As indicated in paragraphs 9 and 18 of the International Accounting Standard 27 “Consolidated and Separated Financial Statements” we must present our financial information on a consolidated basis as if they were a single entity, combining the financial statements of Ecopetrol S.A. and its subsidiaries line by line, adding assets, liabilities, shareholder’s equity, revenues and expenses of similar nature, removing the reciprocal items among members of our corporate group and recognizing non-controlling interest. Our financial results for the first quarter of 2015 and results for the corresponding 2014 period were prepared on the basis of International Financial Reporting Standards as issued by the International Accounting Standards Board (which we refer to as “IFRS”) and are not comparable with our previously issued financial results for the first quarter of 2014 which were prepared in accordance with the Public Accounting Regime (Régimen de Contabilidad Pública) as adopted by the Colombian National Accounting Office (Contaduría General de la Nación).

Overview

Ecopetrol’s financial results for the first quarter of 2015 reflect the negative effect of international oil crude prices, which was partially offset by growth in production and the good performance of its midstream and downstream segments, the solid production of its upstream segment and favorable operating conditions. Ecopetrol’s net income for the three-month period ended March 31, 2015 was Ps$160 billion, compared with Ps$3,888 billion for the first quarter of 2014, a decrease of 95.9%. Average production (including interests in affiliates and subsidiaries) was 773.4 mboed, which reflects an increase of 1% compared to the first quarter of 2014. Refining margin has continued to improve, reaching US$18.2 per barrel in the first quarter of 2015, and total volumes transported during the first quarter of 2015 were 1,273.5 mbd, a 6% increase compared to 1,200.1 mbd transported during the first quarter of 2014.

During the first quarter of 2015, international crude oil prices reached their lowest level in six years. As reported by Bloomberg, on January 13, 2015 the price of Brent crude reached US$46.6 per barrel, which is less than half of the January 2014 price, in response to two market factors: first, market surplus due to world supply rising more quickly than demand; driven mostly by shale production in the United States, and second, weaker-than-expected demand from Asian and European economies.

The global economy in the first quarter of 2015 has been negatively affected by China’s economy continuing to slow down and continued weak results in the United States. Also, as a consequence of the decrease in oil prices since the third quarter of 2014, oil-producing countries have cut back investment significantly, impacting not only the oil sector, but also labor and currency markets, particularly in non-dollar denominated economies. Several of the emerging market economies have lost their historical appeal as engines of growth, with Brazil, Venezuela, Argentina, Russia and Greece (among others) being burdened with large public sector debt. World trade volumes decreased by more than 1% (imports and exports), with export volumes declining globally during the first quarter of 2015. Import volumes increased at a low rate and remained relatively positive in advanced economies, offsetting the decrease in exports, but dropped severely in most emerging market economies outside of Latin America.

The collapse in oil prices has taken a larger-than-expected toll on the Colombian economy. While above the Latin America-wide average, GDP growth for 2015 is expected to be lower than that for 2014 (4.6%) due to decreased private and public consumption, partly as a result of inflationary base effects but also in response to the impact of lower oil prices. Colombia’s Central Bank has left its main policy interest rate at 4.5% since August 2014 and is unlikely to adjust it in the short term in response to accelerated currency weakening in late 2014 and the first quarter of 2015. Although the annualized inflation rate surpassed the Colombian Central Bank’s target range (2% - 4%) in February and March, inflation is expected to remain within the Central Bank’s target range in the medium-term. In conjunction with these macroeconomic changes, the Colombian Peso has experienced a decline in the terms of its exchange rate to the U.S. Dollar, the currency in which many of our financing arrangements are denominated in, which now stands at an average of Ps$2,469/US$1 for the first quarter of 2015.

Results of operations for the three-month period ended March 31, 2015 compared to the three-month period ended March 31, 2014.

The following table sets forth components of our unaudited unconsolidated income statement for the three-month periods ended March 31, 2015 and 2014.

	For the three-month period
	ended March 31,						% Change
	2015			2014
	(Pesos in millions)
Revenues
Total revenue		12,300,855			17,971,324			(31.6	%)
Cost of sales		8,554,637			10,768,934			(20.6	%)
Gross margin		3,746,218			7,202,390			(48.0	%)

Operating expenses		1,388,370			937,724			48.1	%
Operating income		2,357,848			6,264,666			(62.4	%)

Financial Income (expenses), net		(1,530,274	)		(120,912	)		> 500	%
Share of profit of associates		744			15,314			(95.1	%)
Income before income tax		828,318			6,159,068			(86.6	%)

Provision for income tax		472,376			2,094,229			(77.4	%)
Consolidated net income		355,942			4,064,839			(91.2	%)
Non-controlling interests		195,912			176,738			10.8	%
Net income attributable to equity holders of Ecopetrol		160,030			3,888,101			(95.9	%)

Total Revenues

The following table sets forth our foreign and local sales of crude oil, natural gas and refined products for the three-month periods ended March 31, 2015 and 2014.

	For the three-month period ended March 31,				% Change
	2015		2014
Crude oil:
Local sales (mbod)		20.1		30.4		(33.9	%)
Foreign sales (mbod)		570.4		521.6		9.4	%
Average price per local barrel (USD/bl)		34.8		83.4		(58.3	%)
Average price per export barrel (USD/bl)		45.0		95.9		(53.1	%)

Natural gas:
Local sales (mboed)		81.4		79.8		2.0	%
Foreign sales (mboed)		16.2		24.0		(32.5	%)
Average local price (USD/bl)		23.0		22.1		4.1	%
Average export price (USD/bl)		27.5		31.8		(13.5	%)

Refined products (including petrochemicals and industrial products):
Product local sales (mboed)		276.5		264.9		4.4	%
Foreign sales (mboed)		72.7		108.4		(32.9	%)
Average local price per barrel (USD/bl)		72.1		115.7		(37.7	%)
Average export price per barrel (USD/bl)		52.8		97.2		(45.7	%)

In the three-month period ended March 31, 2015, total revenues decreased by 31.6% as compared to the same period in 2014, as a result of the combined effect of:

The decrease of Ps$8,221,088 million in revenues as a result of the reduction of Ecopetrol’s average export basket by US$51.3 per barrel.

The devaluation of the Colombian peso against the U.S. dollar, from an average exchange rate of Ps$2,004/US$1 in the first quarter of 2014 to an average exchange rate Ps$2,469/US$1 in the first quarter of 2015, resulting in an increase in sales revenue of Ps$2,094,782 million.

Increased revenues from services provided by our transportation and logistics segment to third parties, mainly as a result of exchange rate effects on U.S. dollar-denominated transportation tariffs (Ps$248,486 million).

Increased sales volumes of 8 mboed (Ps$207.353 million) mainly due to:

The 0.8% increase in local sales volume in the first quarter of 2015, which is explained mainly by increased sales of gasoline, natural gas, fuel oil and liquefied petroleum gas to meet increased demand in Colombia.

The 0.8% increase in volume exported in the first quarter of 2015, which is explained primarily as the net effect of: 1) increased crude oil exports due to Ecopetrol’s increase in production and increased purchases from third parties and 2) decreased natural gas exports due to the natural decline of production at the Guajira field.

Cost and Expenses

The following table sets forth the components of our cost of sales, operating expenses and operating income for the three-month periods ended March 31, 2015 and 2014.

	For the three-month period ended March 31,				% Change
	2015		2014
	(unaudited) (Pesos in millions)

Fixed cost of sales		2,118,078		2,149,353		(1.5	%)
Variable cost of sales		6,436,559		8,619,581		(25.3	%)
Total cost of sales		8,554,637		10,768,934		(20.6	%)
Operating expenses		1,388,370		937,724		(48.1	%)
Operating income		2,357,848		6,264,666		(62.4	%)

Cost of sales

Our total cost of sales is comprised of fixed and variable cost of sales.

Our fixed cost of sales includes, among other items contracted services, labor costs, maintenance, taxes and depreciation. Our fixed cost of sales decreased by 1.5% (Ps$31,275 million) in the three-month period ended March 31, 2015 as compared to the same period in 2014, primarily as a result of:

a) Reductions in:

- Costs associated with maintenance and contracted services: a Ps$99,326 million reduction of such costs principally at Ecopetrol as a result of optimizations of maintenance plans and contracted services achieved during the first quarter of 2015, among others, including the restructuring of services, lower levels of contracted services used and tariff re-negotiation for maintenance contracts.

- A Ps$5,059 million decrease in other minor items.

b) Increases in:

- A Ps$37,248 million increase in depreciation of property, plant and equipment, which resulted mainly from the increase in assets and capitalizations of costs related to shutdowns at the Barrancabermeja refinery due to previously scheduled maintenances.

- A Ps$35,862 million increase in labor costs, mainly resulting from the signing of the collective bargaining agreement in the second quarter of 2014 and an increase in employees hired during the first quarter of 2015 following a hiring freeze that was instituted at Ecopetrol during the four months prior to the 2014 Colombian presidential elections, pursuant to applicable law.

Our variable cost of sales includes, among other items, purchases of hydrocarbons from the Agencia Nacional de Hidrocarburos (the “National Agency of Hydrocarbons” or “ANH”), purchases of crude oil from business partners, imported products, hydrocarbon transportation services and depletion of fields and inventories. Our variable cost of sales decreased by 25.3% (Ps$2,183,022 million) in the three-month period ended March 31, 2015 as compared to the same period in 2014 primarily as a result of:

a) A Ps$1,830,672 million decline in the purchase costs of crude oil, gas and refined products due to the net effect of:

- Lower average purchase prices due to the decline in international benchmark prices: -Ps$2,770,504 million.

- A 23% decline in the average exchange rate of the Colombian peso against the U.S. dollar: Ps$622,889 million.

- An increase in volumes purchased from third parties, principally Vasconia crude purchases from Pacific Rubiales beginning in November 2014 due to the Barrancabermeja refinery’s increased need for light and medium crude oil, and increased gasoline imports to meet increased demand in Colombia Ps$316,943 million.

b) A Ps$304,287 million decrease in inventories due to a decline in the value of inventories on a lower cost basis in the first quarter of 2015.

c) Decreased transportation costs in an amount of Ps$65,006 million, mainly as an decrease in the use of tanker trucks as a result of the increased availability of pipelines due to operative stability and improved environmental conditions for the operation during the first quarter of 2015.

d) Increased amortizations, depreciations and depletion during the first quarter of 2015, primarily as a result of increased incorporation of reserves in 2014. The reserves added in 2014 is the base for the amortization and depletion of oil investments in 2015 (Ps$44,711 million).

e) An impairment in the value of fuel oil inventories of Ps$37,276 million.

f) Other minor variable items resulting in an increase of Ps$24,378 million.

Operating expenses

In the three-month period ended March 31, 2015 as compared to the same period in 2014, our operating expenses increased by 48% (Ps$450,646 million), as a result of the net effect of:

An increase in taxes due to the wealth tax applicable for the year 2015 (Ps$611,944 million) while no accrual was made for wealth tax expenses in 2014. For purposes of our first-time adoption of IFRS, this item is registered in the 2015 opening balance.

A Ps$47,414 million increase in non-capitalizable items associated with the Cartagena refinery project, a Ps$34,192 million increase in labor costs, a Ps$19,442 million increase in depreciation and a Ps$16,694 million increase in other minor expenditures.

A Ps$279,040 million decrease in exploratory expenditures, as a result of decreased seismic activity and fewer dry wells reported in the period.

Financial income (expenses), net

The following table sets forth our financial income (expenses), net for the three-month periods ended March 31, 2015 and 2014.

	For the three-month period ended March 31,						% Change
	2015			2014
	(Pesos in millions)
Foreign exchange (loss) gain, net		(1,174,852	)		22,993			>(500	%)
Interest expenses		(291,785	)		(142,019	)		105.5	%
Other liabilities financial costs		(134,320	)		(153,196	)		(12.3	%)
Other finance income (expenses), net		70,683			151,310			(53,3	%)
Finance income (expenses), net		(1,530,274	)		(120,912	)		>(500	%)

Our financial income (expenses), net decreased by Ps$1,409,362 million as a result of the net effect of:

An exchange rate loss of Ps$1,197,845 million. During the first quarter of 2014 an exchange rate income of Ps$22,993 million was recorded while in the same period of 2015 an expense of Ps$1,174,852 million was recorded, which resulted from the effect of the depreciation of the peso against the U.S. dollar on Ecopetrol’s net U.S. dollar liability position at March 31, 2015.

A Ps$149,766 million increase in interest expenses derived from an increased level of indebtedness.

A Ps$61,750 million increase in other financial expenditures.

Income before income taxes

Income before income taxes decreased by 86.6% in the three-month period ended March 31, 2015, as compared to the same period in 2014, as a result of the above mentioned factors.

Income tax

The 77.4% decrease in our income tax expenditure is mainly explained by the company’s lower revenues during the first quarter of 2015 as compared to the corresponding period of 2014. However, our effective income tax rate increased in 2015 due to the application of the presumptive income tax method instead of the liquid tax method in the income tax calculation. We calculated our income tax using an effective tax rate of 57%.

Net income attributable to equity holders of Ecopetrol

As a result of the foregoing, net income attributable to the equity holders of Ecopetrol decreased by 95.9% (Ps$3,728,071 million) in the three-month period ended March 31, 2015 as compared to the same period in 2014.

Liquidity and Capital Resources

Liquidity

Our principal sources of liquidity in the three-month period ended March 31, 2015 were cash generated from operations in an amount of Ps$3,298,996 million and cash from financing activities, mainly from additional indebtedness, which totaled Ps$5,056,025 million.

Our principal uses of liquidity in the three-month period ended March 31, 2015 were: 1) Ps$2,979,671 million for investments in natural and environmental resources and reserves and additions to our property, plant and equipment, 2) Ps$963,677 million for debt and interest payments, 3) purchases net of other financial assets amounting to Ps$869,689 billion and 4) dividend payments amounting to Ps$181,704 billion.

For 2015, on a consolidated basis, we expect our major cash needs to include planned capital expenditures amounting to approximately US$7,860 million, approximately 61% of which corresponds to exploration and production activities, 23% to refining and petrochemical activities and 16% to transportation and logistics.

Use of Funds

Capital Expenditures

We plan to meet our budgeted capital expenditures for the next two to three years mainly through cash from operating activities. We also expect to access local and international financial markets to fund part of our capital expenditures.

Cash from operating activities

Net cash provided by operating activities decreased by 25% (Ps$1,099,168 million) in the three-month period ended March 31, 2015, as compared to the same period in 2014, mainly due to a 48% decrease in our gross income resulting from the decrease in international prices of crude oil and higher operating expenses due to the wealth tax applicable for 2015, the effect of which was partially offset by a lower income tax paid due to decreased revenues in the first quarter of 2015 as compared with the first quarter of 2014.

Cash used in investing activities

In the three-month period ended March 31, 2015, net cash used in investing activities increased to Ps$3,767,358 million as compared to Ps$1,510,855 in the same period in 2014. This increase is primarily the result of a higher net purchases of other financial assets in an amount of Ps$1,511,033 million due to investment of funds received from new debt incurred and higher capital expenditures in an amount of Ps$618,105 million mainly at the Cartagena refinery, in the Rubiales, Quifa, Castilla, Cira Infantas fields and as a result of the expansion of the Acacias and Castilla facilities.

Cash provided (used) in financing activities

In the three-month period ended March 31, 2015, net cash provided from financing activities increased by Ps$5,520,278 million mainly due to an increase in borrowings of Ps$3,615,692 million as compared with the same period in 2014 and a Ps$1,146,340 million decrease in dividends paid during the first quarter of 2015 as compared to the corresponding period of 2014 due to the last payment of dividends from 2012 having been made in the first quarter of 2014.

Dividends

On March 26, 2015, at the ordinary general shareholders’ meeting, our shareholders approved dividends for the fiscal year ended December 31, 2014 amounting to Ps$5,468,521 million, or an ordinary dividend of Ps$133 per share. Dividends declared will be paid in a lump sum to minority shareholders on June 22, 2015 (Ps$629,344 million). Dividends declared will be paid to the Nation according to the payment schedule set forth below:

Month and Year of Payment	Total Dividend (in Ps$ millions)

October 23, 2015		1,383,000
November 20, 2015		1,383,000
December 15, 2015		1,383,000
Between December 21, 2015 and March 11, 2016		690,177

Total		4,839,177

FORWARD-LOOKING STATEMENTS

This current report on Form 6-K contains forward-looking statements within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. These statements are not based on historical facts and reflect our expectations for future events and results. Most facts are uncertain because of their nature. Words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “should,” “plan,” “potential,” “predicts,” “prognosticate,” “project,” “target,” “reach,” “seek,” “contemplate”, “achieve” and “intend,” among other similar expressions, are understood as forward-looking statements. These factors may include the following:

our exploration and production activities, including drilling;

import and export activities;

our liquidity, cash flow and sources of funding;

our projected and targeted capital expenditures and other cost commitments and revenues; and

dates by which certain areas will be developed or will come on-stream.

Our forward-looking statements are not guarantees of future performance and are subject to assumptions that may prove incorrect and to risks and uncertainties that are difficult to predict. Actual results could differ materially from those expressed or forecast in any forward-looking statements as a result of a variety of factors. These factors may include, but are not limited to, the following:

general economic and business conditions, including crude oil and other commodity prices, refining margins and prevailing exchange rates;

competition;

our ability to obtain financing;

our ability to find, acquire or gain access to additional reserves and our ability to develop existing reserves;

uncertainties inherent in making estimates of our reserves;

significant political, economic and social developments in Colombia and other countries where we do business;

natural disasters, military operations, terrorist acts, wars or embargoes;

regulatory developments, including regulations related to climate change;

receipt of government approvals and licenses

technical difficulties; and

other factors discussed in the Form 20-F under “Risk Factors.”

All forward-looking statements attributed to us are qualified in their entirety by this cautionary statement. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information or for any other reason. Accordingly, readers should not place undue reliance on the forward-looking statements contained in this current report on Form 6-K.

Exhibit 99.1

Ecopetrol S. A.

Interim Consolidated Financial Statements

For the three-month periods ended March 31, 2015 and 2014, as at March 31, 2015, December 31 2014 and the opening statement of financial position at January 1, 2014.

ECOPETROL S.A.

Consolidated statement of financial position

at March 31, 2015, December 31, 2014 and January 1, 2014

(figures expressed in millions of Colombian Pesos)

		March 31		December 31		January 1
Assets	Notes	2015		2014		2014
Current assets
Cash and cash equivalents	5		10,941,003		7,015,731		8,541,138
Trade and other receivables	6		4,403,743		4,462,104		5,560,753
Inventories	7		2,804,040		2,953,856		3,573,827
Other financial assets	8		2,547,765		1,586,314		1,948,172
Current tax assets	9		1,858,426		2,018,486		1,545,325
Non-current assets held for sale	10		1,464,788		1,582,828		1,506,395
Other assets	11		1,462,011		1,392,527		707,702
Total current assets			25,481,776		21,011,846		23,383,312

Non-current assets
Investments in associates and joint ventures	12		2,441,497		2,392,128		2,657,198
Trade and other receivables	6		469,301		455,176		708,161
Property, plant and equipment	13		60,753,896		57,538,638		47,345,057
Natural and environmental resources	14		25,592,235		25,215,921		21,961,766
Intangibles	15		215,924		225,327		250,457
Deferred tax assets	9		3,058,059		3,091,013		3,618,084
Other financial assets	8		671,866		490,056		369,374
Goodwill	16		1,407,213		1,407,213		1,407,213
Other non-current assets	11		1,097,526		1,094,077		1,187,570
Total non-current assets			95,707,517		91,909,549		79,504,880
Total assets			121,189,293		112,921,395		102,888,192

Liabilities
Current liabilities
Loans and borrowings	17		4,611,531		3,456,441		3,121,335
Trade and other payables	18		12,920,633		8,806,021		9,981,321
Labor and pension plan obligations	19		1,308,514		1,380,000		1,337,616
Current tax liabilities	9		2,599,679		1,894,761		2,966,277
Estimated liabilities and provisions	20		901,527		848,051		1,091,782
Other financial liabilities	21		225,428		140,055		46
Other liabilities			305,906		297,628		245,767
Total current liabilities			22,873,218		16,822,957		18,744,144

Non-current liabilities
Loans and borrowings	17		38,114,386		31,490,900		19,120,078
Trade and other payables	18		140,673		126,431		489,238
Labor and pension plan obligations	19		4,192,293		4,274,083		5,414,008
Deferred tax liabilities	9		3,787,949		4,040,143		4,036,488
Estimated liabilities and provisions	20		4,842,089		4,718,722		3,584,511
Other long-term liabilities			358,740		373,960		508,467
Total non-current liabilities			51,436,130		45,024,239		33,152,790

Total liabilities			74,309,348		61,847,196		51,896,934

Equity	22
Equity attributable to owners of the Company			45,408,136		49,619,504		49,714,416
Non-controlling interests			1,471,809		1,454,695		1,276,842
Total Equity			46,879,945		51,074,199		50,991,258

Total liabilities and equity			121,189,293		112,921,395		102,888,192

The accompanying notes are an integral part of the Consolidated Financial Statements

ECOPETROL S.A.

Consolidated statement of profit or loss

For the three month periods ended March 31

(figures expressed in millions of Colombian Pesos, except for the earnings per share, expressed in Colombian pesos)

	Notes	2015			2014

Revenue	23		12,300,855			17,971,324
Cost of sales	24		8,554,637			10,768,934
Gross income			3,746,218			7,202,390

Administration expenses	25		819,030			198,724
Operation and project expenses	25		604,953			796,995
Other operating income and expenses, net	26		(35,613	)		(57,995	)
Operating income			2,357,848			6,264,666

Finance results, net	27
Financial income			205,814			172,208
Financial expenses			(561,236	)		(316,114	)
Foreign exchange gain (loss), net			(1,174,852	)		22,994
			(1,530,274	)		(120,912	)

Share of profit of associates			744			15,314
Income before income tax			828,318			6,159,068

Income tax	9		(472,376	)		(2,094,229	)
Net income for the period			355,942			4,064,839


Income attributable to:
Owners of the Company			160,030			3,888,101
Non-controlling interest			195,912			176,738
			355,942			4,064,839

Earnings per share (basic and diluted)			3.9			94.6

The accompanying notes are an integral part of the Consolidated Financial Statements

ECOPETROL S.A.

Consolidated statement of other comprehensive income

For the three month periods ended March 31

(figures expressed in millions of Colombian Pesos, except for the earnings per share, expressed in Colombian pesos)

	2015			2014

Net income for the year		355,942			4,064,839

Components of comprehensive income of income tax that may be reclassified subsequently to profit or loss:

Accumulated foreign currency translation		1,129,571			(291,201	)
Net fair value gain (Loss) on available-for-sale financial assets, net of taxes		(118,239	)		29,065
		1,011,332			(262,136	)
Components of comprehensive income of income tax that will not be reclassified subsequently to profit or loss:

Remeasurement of defined benefit obligation, net of taxes		85,779			62,147
Other comprehensive income for the period		1,097,111			(199,989	)

Total comprehensive income for the year		1,453,053			3,864,850

Attributable to:
Shareholders		1,238,308			3,688,112
Non-controlling interests		214,745			176,738
		1,453,053			3,864,850

The accompanying notes are an integral part of the Consolidated Financial Statements

ECOPETROL S.A.

Consolidated statement of cash flows

For the three month periods ended March 31

(figures expressed in millions of Colombian Pesos)

	2015			2014

Cash flows from operating activities:
Net income for the period attributable to owners of Ecopetrol S.A.		160,030			3,888,101
Adjustments to reconcile net income to cash provided by operating activities:
Non-controlling interest		195,912			176,738
Deferred income tax		(284,176	)		20,551
Depreciation, depletion and amortization		1,586,918			1,574,939
Foreign exchange loss (gain)		1,174,852			(22,993	)
Finance costs recognised in profit or loss		426,105			295,215
Gain on disposal of non-current assets		494			(3,956	)
Impairment of assets		41,748			2,076
Fair Value Loss (gain) on financial assets valuation		60,563			(5,875	)
Share of profit of associates		(744	)		(15,314	)
Movements in working capital:
Trade and other receivables		354,043			(457,012	)
Inventories		140,296			274,417
Trade and other payables		(1,402,364	)		(741,597	)
Current tax assets and liabilities		1,036,629			1,378,992
Labor and pension plan obligations		(153,131	)		(142,636	)
Estimated liabilities and provisions		21,075			29,154
Other assets and liabilities		65,855			(485,079	)
Income tax paid		(125,109	)		(1,367,557	)
Net cash provided by operating activities		3,298,996			4,398,164

Cash flow from investing activities:
Investment in property, plant and equipment		(2,089,147	)		(1,471,042	)
Investment in natural and environmental resources		(890,524	)		(839,714	)
Payments for intangibles		(6,973	)		(83,834	)
(Purchases) sales of other financial assets		(869,689	)		641,344
Interest received		73,690			109,990
Proceeds from sales of property, plant and equipment		15,285			132,401
Net cash used in investing activities		(3,767,358	)		(1,510,855	)

Cash flows from financing activities:
Proceeds from borrowings		5,056,025			1,440,333
Repayment of borrowings		(560,606	)		(1,373,703	)
Interest paid		(403,071	)		(348,252	)
Capitalizations		11			43
Dividends paid		(181,704	)		(1,328,044	)
Net cash generated/(used in) financing activities		3,910,655			(1,609,623	)

Effects of exchange rate changes on the balance of cash held in foreign currencies		482,979			81,926

Net increase in cash and cash equivalents		3,925,272			1,359,612
Cash and cash equivalents at the beginning of the period		7,015,731			8,541,138
Cash and cash equivalents at the end of the period		10,941,003			9,900,750

Non-cash transactions:
Payment of income tax through offset of recoverable balances		594,451			-

The accompanying notes are an integral part of the Consolidated Financial Statements

ECOPETROL S.A.

Consolidated statement of changes in equity

For the three month periods ended March 31, 2015 and 2014

(figures expressed in millions of Colombian Pesos)

	Subscribed and paid-in capital		Additional paid- in capital		Legal reserves		Other reserves			Other comprehensive income			Retained earnings			Non-controlling interests			Total Equity

Balance as of December 31, 2014		10,279,175		6,607,613		4,938,718		13,170,693			3,821,973			10,801,332			1,454,695			51,074,199
Net income		-		-		-		-			-			160,030			195,912			355,942
Dividends declared		-		-		-		-			-			(5,468,520	)		(197,631	)		(5,666,151	)
Additions to paid-in capital		-		5		-		-			-			-			-			5
Additional paid-in capital receivable		-		6		-		-			-			-			-			6
Release of reserves - Occasional		-		-		-		(12,823,783	)		-			12,823,783			-			-
Appropriation of reserves
Legal		-		-		23,617		-			-			(23,617	)		-			-
Fiscal		-		-		-		439,757			-			(439,757	)		-			-
Occasional		-		-		-		15,037,180			-			(15,037,180	)		-			-
Other comprehensive income
Actuarial valuation		-		-		-		-			85,779			-			-			85,779
Net fair value gain (loss) on available-for-sale financial assets		-		-		-		-			(118,239	)		-			-			(118,239	)
Foreign currency translation		-		-		-		-			1,129,571			-			18,833			1,148,404
Balance as of March 31, 2015		10,279,175		6,607,624		4,962,335		15,823,847			4,919,084			2,816,071			1,471,809			46,879,945


Balance as of January 1, 2014		10,279,175		6,607,541		4,700,873		10,354,141			245,711			17,526,975			1,276,842			50,991,258
Net income		-		-		-		-			-			3,888,101			176,738			4,064,839
Dividends declared		-		-		-		-			-			(10,690,342	)		(103,229	)		(10,793,571	)
Additions to paid-in capital		-		43		-		-			-			-			-			43
Additional paid-in capital receivable		-		30		-		-			-			-			-			30
Release of reserves - Occasional		-		-		-		(10,161,139	)		-			10,161,139			-			-
Appropriation of reserves
Legal		-		-		228,326		-			-			(228,326	)		-			-
Occasional		-		-		-		12,823,784			-			(12,823,784	)		-			-
Other comprehensive income
Actuarial valuation		-		-		-		-			62,147			-			-			62,147
Net fair value gain (loss) on available-for-sale financial assets		-		-		-		-			29,065			-			-			29,065
Foreign currency translation		-		-		-		-			(291,201	)		-			-			(291,201	)
Balance as of March 31, 2014		10,279,175		6,607,614		4,929,199		13,016,786			45,722			7,833,763			1,350,351			44,062,610

The accompanying notes are an integral part of the Consolidated Financial Statements

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Contents

1.	Reporting entity	4
2.	Basis of presentation	4
3.	Accounting policies	6
3.1	Significant accounting judgments and estimations	6
3.2	Financial instruments	9
3.3	Inventories	11
3.4	Related parties	12
3.5	Joint operations	12
3.6	Non-current assets held for sale	13
3.7	Property, plant and equipment	13
3.8	Natural and environmental resources	14
3.9	Borrowing cost	15
3.10	Intangible assets	16
3.11	Goodwill	16
3.12	Leases	16
3.13	Impairment	16
3.14	Provisions and Contingent Liabilities	17
3.15	Taxes	18
3.16	Employee benefits	19
3.17	Revenue recognition	21
3.18	Cost and expenses	21
3.19	New standards	21
4.	First time adoption of International Financial Reporting Standards - IFRS	22
5.	Cash and cash equivalents	29
6.	Trade and other receivables	29
7.	Inventories	31
8.	Other financial assets	31
9.	Tax assets and liabilities and current and deferred income tax	33
10.	Non-current assets held for sale	37
11.	Other assets	38
12.	Investments in associates and joint ventures	38
13.	Property, plant and equipment	41
14.	Natural and environmental resources	43
15.	Intangibles	44
16.	Goodwill	45
17.	Loans and borrowings	46

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

17.1	Composition of loans an borrowings	46
17.2	Maturity of financial obligations	47
17.3	Guarantees	48
17.4	Fair value of loans	48
18.	Trade and other payables	49
19.	Labor and pension plan obligations	49
20.	Estimated liabilities and provisions	53
21.	Other financial liabilities	56
22.	Equity	56
23.	Revenue	59
24.	Cost of sales	60
25.	Administration, operation and project expenses	61
26.	Other operating income and expenses, net	61
27.	Finance results, net	62
28.	Risk management	62
29.	Related parties	66
30.	Joint Operations	69
31.	Segment information	70
Exhibit 1. Consolidated companies, associates and joint ventures		75

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Reporting entity

Ecopetrol S.A. is a mixed economy company, with a commercial nature, constituted in 1948. Dedicated to commercial or industrial activities arising from or related to the exploration, production, refining, transportation, storage, distribution, and selling of hydrocarbons, their by-products and associated products on its own or through its subsidiaries (“Ecopetrol”, the “Company” or Ecopetrol Business Group).

11.51% of Ecopetrol S.A.’s shares are publicly traded on the Colombian, New York, Lima and Toronto Stock Exchanges. The remaining shares (89.49% of the total outstanding shares) are owned by the Ministry of Finance and Public Credit.

The address of the principal office of Ecopetrol S.A. is Bogotá – Colombia, Carrera 13 No. 36-24.

Basis of presentation

2.1

Statement of compliance and authorization of financial statements

IFRS have been adopted in Colombia for the periods beginning January 1, 2015, in conformity with Law 1314 of 2009, Regulatory Decree 2784 of December 2012, Decrees 3023 and 3024 of 2013 and Decree 2615 of 2014.

These interim consolidated financial statements for the three month period ended March 31, 2015 and 2014 have been prepared in accordance with International Accounting Standard (IAS) 34 – Interim Financial Reporting and do not include all of the information required for full annual financial statements. These are the Group´s first IFRS condensed consolidated interim financial statements for part of the period covered by the first IFRS annual financial statements and IFRS 1 First-time adoption of International Financial Reporting Standards has been applied. Effects originated in application of IFRS are set out in note 4.

These interim consolidated financial statements were approved by the Administration of the Company on June 22, 2015. The Consolidated financial statements for the years ended December 31, 2014 and 2013 have been prepared in accordance with Public Accounting Regime issued by the Contaduría General de la Nación (CGN – National Accounting Office) and other legal dispositions, which were considered as previous Generally Accepted Accounting Principles (previous GAAP). Previous GAAP differs in certain respects from IFRS, as disclosed in Note - 4 - First time adoption of International Financial Reporting Standards - IFRS.

Principal accounting policies are set out in note 3 to these interim consolidated financial statements.

2.2

Basis of consolidation

For presentation purposes, the interim consolidated financial statements were prepared by consolidating all companies set out in Exhibit 1, which are those that Ecopetrol is able to control directly or indirectly. Control is achieved when the Company:

has power over the investee;

is exposed, or has the rights, to variable returns from its involvement with the investee; and

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

has the ability to use its power to affect its returns.

When the Company has less than a majority of the voting rights of an investee, it still has power over the investee when the voting rights are sufficient to give it the practical ability to direct the relevant activities of the investee unilaterally. The Company considers all relevant facts and circumstances in assessing whether or not the Company’s voting rights in an investee are sufficient to give it power, including:

the size of the Company’s holding of voting rights relative to the size and dispersion of holding of the other shareholders;

potential voting rights held by the Company, other vote holders or other parties;

rights arising from other contractual arrangements; and

any additional facts and circumstances that indicate that the Company has, or does not have, the current ability to direct the relevant activities, at the time that decisions need to be made, including voting patterns at previous shareholders´ meetings.

All intragroup assets and liabilities, equity, income, expenses and cash flows relating transactions between entities of the Group were eliminated on consolidation.

2.3

Measurement basis

The consolidated financial statements have been prepared on a historical cost basis except for financial assets that are measured at fair value through profit or loss and / or through other comprehensive income at the end of each reporting period, as explained in the accounting policies below.

Historical cost is generally based on fair value of the consideration given in exchange for goods and services.

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In estimating the fair value of an asset or liability, the Group takes into account the characteristic of the asset or liability if market participants would take those characteristics into account when pricing the asset or liability at the measurement date.

2.4

Presentation and functional currency

Transactions included in these financial statements are valued and presented in Colombian pesos, the currency of the primary economic environment in which Ecopetrol operates. This is also its functional currency.

The statement of profit or loss and statement of cash flows of subsidiaries with functional currencies different from Ecopetrol’s functional currency are translated at the exchange rates at the dates of the transaction or based on the monthly average rate. Assets and liabilities are translated at the closing rate and other equity items are translated at exchange rates at the moment of the transaction. All resulting exchange differences are recognized in other comprehensive income.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

2.5

Foreign currency

In preparing the financial statements of Ecopetrol, transactions in currencies other than the entity’s functional currency are recognized at the rates of exchange prevailing at the dates of the transactions. At the end of each reporting period, monetary items denominated in foreign currencies are translated at the rates prevailing at the date and variations presented on translation are recognized in financial results, net. Non-monetary items carried at fair value that are denominated in foreign currencies are translated at the rates prevailing at the date when the fair value was determined.

2.6

Classification of assets and liabilities between current and non-current

In the consolidated statement of financial position, assets and liabilities are classified according to their nature between current, being those with a maturity date equal or less than twelve months, and non-current, being those with a maturity date greater than twelve months.

2.7

Net earnings per share

Net earnings per share is calculated based on net earnings for the period attributable to the controlling stockholders, divided by the weighted average number of subscribed shares in circulation during the period. There are no potentially dilutive securities.

Accounting policies

The accounting policies indicated below have been applied consistently for all the periods presented, unless otherwise stated.

3.1

Significant accounting judgments and estimations

The preparation of financial statements requires that the Company’s management make estimates about the carrying amounts of assets, liabilities, income, expenses and commitments recognized in the Financial Statements. These estimates are carried out based on the best available information on the matters under review. Revisions to accounting estimates are recognized prospectively in the period in which the estimate is revised.

The following are the critical judgments and estimations that have the most significant effect on the amounts recognized in the consolidated financial statements.

3.1.1

Oil and Gas reserves

The reserves audit process is conducted annually as of December 31 in accordance with the United States Securities and Exchange Commission (SEC) definitions and rules set forth in Rule 4-10(a) of SEC Regulation S-X and the disclosure guidelines contained in the SEC’s Modernization of Oil and Gas Reporting final rule.

The estimated reserve amounts are based on the average prices during the 12-month period prior to the ending date of the period covered in the report, determined as the unweighted arithmetic averages of the prices in effect on the first-day-of-the-month for each month within such period, unless prices were defined by contractual arrangements, as required by the SEC regulations.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Reserves estimates are prepared using geological, technical and economic factors, including projections of future production rates, oil prices, engineering data and length and amount of future investments with a certain degree of uncertainty. These estimates that are based on conditions in existence as of the date of the report which could significantly differ from other conditions during the year or in future periods. Any changes in regulatory and/or market conditions could materially change the quantity and value of our reserves.

Changes to estimates of proved developed reserves affect prospectively the amounts of depreciation, depletion and amortisation charged and, consequently, the carrying amounts of exploration and production assets. It is expected, however, that in the normal course of business the diversity of the asset portfolio will limit the effect of such revisions. The outcome of, or assessment of plans for, exploration or appraisal activity may result in the related capitalised exploration drilling costs being recognised in in the Consolidate statement of profit and loss that period.

Information about the carrying amounts of exploration and production assets and the amounts charged to income, including depreciation, depletion and amortisation, is presented in Note 14.

3.1.2

Abandonment of fields and other facilities

According to environmental and oil regulations, the Ecopetrol Business Group must recognize the costs for the abandonment of oil extraction and transportation facilities, which include the cost of plugging and abandoning wells, dismantling facilities and environmental remediation in the affected areas.

The estimated costs of dismantling and removing these facilities are recorded in the functional currency of each company at the time of the installation of the assets. The estimated obligations created for the abandonment and dismantling are subject to annual reviews and adjusted to reflect the best available estimate, due to technological changes and political, economic, environmental and security issues, and also relations with stakeholders.

The calculations of these estimates are complex and involve significant judgments made by Management, such as internal projections of costs, future inflation and discount rates. We consider that the retirement costs and obligations are reasonable, based on the experience of the Ecopetrol business group and market conditions; nevertheless, significant variations in external factors used for the calculation of the estimate could significantly impact the financial statements.

3.1.3

Pension plan and other benefits

The determination of the expense, liability and adjustments relating to our pension plans and other retirement benefits requires us to use judgment in the determination of actuarial assumptions. These include the number of active employees with indefinite term contracts, retirees and their heirs, pension benefits, healthcare and education expenses, the number of temporary employees who will remain with us until retirement, voluntary retirement plans and pension bonds. The calculation of pension bonds is maintained to comply with our pension obligations, pursuant to Decrees 1748 of 1995, 1474 of 1997, and 876 of 1998, as well as Law 100 of 1993 and its regulatory decree.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

These actuarial assumptions include estimates of future mortality, withdrawal, changes in compensation and discount rates as well as the estimated rate of return on pension bonds and other plan assets. These assumptions are reviewed annually for actuarial valuation purposes and may differ materially from the actual results due to the changing economic and market conditions, regulatory events, court rulings, higher or lower retirement rates, or longer or shorter life expectations of employees.

We consider that the assumptions used for the recognition of our obligations under defined benefit plans are reasonable based on our experience and market conditions.

3.1.4

Impairment of oil and gas assets

During annual impairment testing management must make reasonable and supportable assumptions and estimates with respect to, among other factors, (1) the fair value of reserves, (2) oil fields’ production profiles and future production of refined and chemical products, (3) future investments, taxes and costs, (4) future capital expenditures and useful life for properties and (5) future prices, among other factors. Any change in the variables used to prepare such assumptions and estimates may have a significant effect on the results of the impairment tests.

3.1.5

Goodwill Impairment

Ecopetrol performs annual impairment tests of goodwill in reference to fair value. Goodwill, for impairment testing purposes, is allocated to each of the cash-generating units (or groups of cash generating units) that are expected to benefit from the synergies of the combination.

Fair value is determined using the discounted free cash flow methodology that requires significant assumptions and estimates to be made. The Company considers that the assumptions and estimates used are reasonable and supportable based on the current market conditions and are aligned to the risk profile of the related assets. However, different assumptions and estimates may be used which would lead to different results. Valuation models used are sensitive to changes in the underlying assumptions. For example, sales volumes and prices that will be paid for the purchase of raw materials are assumptions that may vary in the future. Adverse changes in any of these assumptions could lead to recognition of goodwill impairment.

3.1.6

Litigation Assessments

We are subject to claims for regulatory and arbitration proceedings, tax assessments and other claims arising in the normal course of business. Management and legal counsel evaluate these situations based on their nature, the likelihood that they materialize, and the amounts involved, to decide on any changes to the amounts accrued and/or disclosed. This analysis, which may require considerable judgment, includes assessment of current legal proceedings brought against us and claims not yet initiated. In accordance with management’s evaluation and guidance provided by IFRS, we create provisions to meet these costs when the liability is probable and reasonable estimates of the liability can be made.

Ecopetrol considers that the payments required to settle the quantities related to the claims, in case of loss, will not vary significantly from the estimated costs, and therefore will not have a material adverse effect on our financial statements taken as a whole.

3.1.7

Income Taxes

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the carrying amounts of existing assets and liabilities in our financial statements and their respective tax bases. Deferred taxes on assets and liabilities are calculated based on enacted or substantively enacted statutory tax rates that will be applied to our taxable income during the years in which temporary differences between the carrying amounts and tax bases are expected to be reversed.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

3.2

Financial instruments

The classification of financial instruments depends on the nature and purpose for which the financial assets or liabilities were acquired and is determined at the time of initial recognition. All regular way purchases or sales of financial instruments are recognized and derecognized on a trade date basis. Regular purchases or sales of financial assets are those that require delivery of assets within the time frame established by regulation or agreement in the marketplace.

Financial assets and financial liabilities are initially measured at fair value. Transaction costs that are directly attributable to the acquisition or issue of financial assets and financial liabilities (other than financial assets and financial liabilities at fair value through profit or loss) are added to or deducted from the fair value of the financial assets or financial liabilities, as appropriate, on initial recognition. Transaction costs directly attributable to the acquisition of financial assets or financial liabilities at fair value through profit or loss are recognized immediately in profit or loss.

Financial assets through profit or loss and through other comprehensive income are stated at fair value. Financial instruments at amortized cost, loans and trade receivables, other receivables and financial assets held-to-maturity are measured at amortized cost using the effective interest method.

Equity investments available for sale that do not have a market quotation price and which fair price cannot be reliably measured are measured at cost less any loss for impairment identified at the end of each reporting period

Fair value

The fair value hierarchy is based on the level of market available information which includes the security liquidy and availability of exchange prices or indicators generated from market operations (rates, curves, volatilities and other required valuation variables).

Level 1: Quoted prices (unadjusted) in active markets for identical assets and liabilities. For the Company, level 1 inputs include marketable securities that are actively traded.

Level 2: Inputs other than Level 1 that are observable, either directly or indirectly. For the Company, Level 2 inputs include quoted prices for similar assets, prices obtained through third-party broker quotes, and prices that can be corroborated with other observable inputs for substantially the same term as the contract.

Level 3: Unobservable inputs. The Company does not use Level 3 inputs for any of its recurring fair –value measurements. Level 3 inputs may be required for the determination of fair value associated with certain non-recurring measurements of non-financial assets and liabilities. The Company uses Level 3 inputs to determine the fair value of certain non-recurring non-financial assets.

Effective interest method

The effective interest method is a method of calculating the amortized cost of a debt instrument and of allocating interest income over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash receipts or payments (including all fees, transaction costs and other premiums or discounts that are included in the calculation of the effective interest rate) through the expected life of the financial instrument (or, when appropriate, at a shorter period), to the net carrying amount on initial recognition.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Impairment

Financial assets at amortized cost are assessed for impairment indicators at the end of each reporting period. Financial assets are considered to be impaired when there is objective evidence that, as a result of one or more events that occurred after initial recognition, the estimated future cash flows of the investment have been affected. For financial assets measured at amortized cost, the amount of the impairment loss recognized is the difference between the asset’s carrying amount and the present value of estimated future cash flows, discounted at the financial asset’s original effective interest rate.

De-recognition of financial assets and financial liabilities

Ecopetrol derecognizes a financial asset when the contractual rights to the cash flows from the asset expire and when it transfers substantially all the risks and rewards of ownership of the asset to another party. If neither the risks nor rewards of ownership are transferred and the Company continues to control the transferred asset, its retained interest in the asset and any associated liability for amounts it may have to pay continue to be recognized. If all the risks and rewards of ownership of a transferred financial asset are retained, the financial asset and any collateralized borrowing for the proceeds received are recognized.

3.2.1

Cash and cash equivalents

Cash and cash equivalents include negotiable investments and special funds with maturity dates that fall within ninety (90) days of their acquisition and are subject to minimal risks of changes in value.

3.2.2

Financial assets at fair value through profit or loss

Financial assets at fair value through profit or loss are financial assets held for trading acquired principally for the purpose of selling them in the short term. Financial assets at fair value through profit or loss are stated at fair value, with any gains or losses arising on re-measurement recognized in profit or loss.

Loans to employees are initially recognized using the present value of the future cash flows, discounted at the current market rate of return for similar loans. If the interest rate is less than the current market rate, fair value will be less than the amount of the loan. This difference is recorded as a benefit to employees.

3.2.3

Available for sale financial assets

Available for sale financial assets are equity instruments of other non-controlled or non-strategic companies where the Company does not exercise any type of control or significant influence thereon and where the Company does not intend to sell the instruments in the short term. They are recognized at their fair value and unrealized losses or profits are recognized in other comprehensive income. At the time of sale or impairment of the assets the related adjustments are attributed to the results of the period.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

3.2.4

Loans and receivables

Financial assets with fixed or determinable payments that are not quoted in an active market are classified as current, except for those that have a maturity date longer than twelve months from the statement of financial position date, which are classified as non-current. Loans and receivables, including trade and other receivables, are measured initially at fair value and then at amortized cost using the effective interest rate method.

3.2.5

Financial liabilities

Financial liabilities correspond to the financing obtained by the Company through bank credit facilities and bonds, accounts payable to suppliers and creditors.

Bank credit facilities and bonds are initially recognized at their fair value, net of transactions costs incurred, and subsequently carried at amortized cost. The difference between the amount received and its nominal value is recognized in the results of the period during the time of amortization of the financial obligation, using the effective interest rate method.

Accounts payable to suppliers and creditors are short term financial liabilities recorded at their face value, since they do not differ significantly from their fair value.

3.2.6

Derivative financial instruments

Ecopetrol may enter into hedging agreements to reduce exposure to the fluctuations of international crude oil and products prices and foreign exchange and interest rates. We do not use derivative financial instruments for speculative purposes. Ecopetrol has established control activities to assess, approve and monitor derivative financial instruments. During the past few years, these types of instruments have not been recurrent or have not generated any significant impact on the financial statements.

During 2014, exchange rate derivative were utilized, however, these instruments did not meet the necessary requirements for the application of hedge accounting and the impact with respect to the fair value movements was recognized directly in the results of the period.

3.3

Inventories

Inventories include assets extracted, in production process, transformed or acquired for any reason, for the purpose of being sold, transformed and consumed in the production process, or as part of services delivered.

Crude oil is valued at its production cost, including necessary expenses incurred to transport the inventory to its current locations.

The cost of inventories is determined under the weighted average method, which includes acquisition costs (deducting commercial discounts, rebates obtained and other similar amounts), transformation, as well as other costs incurred in order to deliver the inventories to their current location and conditions, such as transportations costs.

Inventories of consumables (spare parts and supplies) are recognized as inventory and subsequently charged to expense, maintenance or projects, as such elements are consumed.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Ecopetrol makes an evaluation of the net realizable value of inventories at the end of the period, recording, with charge to profit and loss, an impairment to the value when they are overvalued. When the circumstances that previously caused impairment cease to exist, or when there is clear evidence of an increase in the net realizable value due to a change in economic circumstances, the amount thereof is then reversed.

3.4

Related parties

Associates and joint ventures are considered related parties. Investments in associates and joint ventures are accounted for using the equity method and are initially recognized at cost. The Company's investment in associates and joint ventures includes goodwill identified on acquisition, net of any accumulated impairment loss.

The Company's share of the profit or loss of its associates and joint ventures is recognized in the statement of income and its share of reserve movements is recognized in the Company reserves.

Unrealized gains on transactions between the Company and its associates and joint ventures are eliminated to the extent of the Company's interest.

Accounting policies of associates and joint ventures have been changed where necessary to ensure consistency with the policies adopted by the Company.

3.4.1

Investments in associates

An associate is an entity over which the Group has significant influence but not control. Generally these entities are those in which a equity interest is maintained from 20% to 50% of the voting rights. See Exhibit I for a detail of these companies.

3.4.2

Joint ventures

A joint venture is a joint arrangement whereby the parties that have joint control of the arrangement have rights to the net assets of the joint arrangement. Joint control exists only when decisions about the relevant activities require unanimous consent of the parties sharing control.

3.5

Joint operations

Joint operation contracts are entered into between Ecopetrol and third parties in order to share risk, secure capital, maximize operating efficiency and optimize the recovery of reserves. In these joint operations, one party is designated as the operator to execute the expense and investment budget and report to partners according to their participation interests. Furthermore, each party takes its share of the hydrocarbons (crude oil or gas) produced according to its agreed participation.

When Ecopetrol participates as a non-operator partner, it records the assets, liabilities, revenues, costs and expenses based on information reported by the operators. When Ecopetrol is the direct operator of the joint venture contracts, it records its percentage of the assets, liabilities, revenues, costs and expenses, based on each partner’s participation interests in the line items corresponding to assets, liabilities, expenses, costs and revenues.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

3.6

Non-current assets held for sale

Non-current assets and disposals groups are classified as held for sale if their carrying amount will be recovered principally through a sale transaction rather than through continuing use. This condition is regarded as met only when the sale is expected to qualify for recognition as a completed sale within one year from the date of classification and the asset (or disposal group) is available for immediate sale in its present condition. These assets are measured at the lower of their carrying amount and fair value less costs to sell.

3.7

Property, plant and equipment

Recognition and measurement

Property, plant and equipment are presented at cost less accumulated depreciation and accumulated losses for impairment. Tangible components related to natural and the environmental resources are part of property, plant and equipment.

All directly attributable costs of bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management are considered capitalizable. Such costs are mainly: a) purchase price, including import duties and non-refundable purchase taxes; b) costs of employee benefits arising directly from the construction or acquisition; c) all directly attributable costs of bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management; d) borrowing costs incurred in loans directly attributable to the acquisition and construction of assets and; e) the initial estimate of the costs of dismantling and removing the item.

Spare parts and servicing equipment are carried as inventories and recognised as an expense as they are consumed. Major spare parts and stand-by equipment that the entity expects to use during more than one period are recognized as property, plant and equipment.

Any gain or loss arising from the disposal of a property, plant and equipment item is recognized in profit or loss in the period incurred.

Subsequent disbursements

All disbursements made on the existing assets in order to increase or extend the initial expected useful life, increase productivity or productive efficiency, that allow a significant reduction of operating costs, increase the level of reserves in exploration or production areas or replace a part or component of an asset that is considered critical for the operation are considered additions or improvements and are recognized as property, plants and equipment.

The costs of the day-to-day servicing, repair or maintenance of an item of property, plant and equipment are recognised as expense when incurred. However, major inspections performed, are capitalized.

Depreciation

Property, plant and equipment is depreciated using the straight-line method, except for those associated with Exploration and Production activities which are depreciated using the technical units-of-production method. Technical useful lives are updated annually considering factors such as: additions or improvements (due to parts replacement or critical components for the asset’s operation), technological advances, obsolescence and other factors; the effect of this change is recognised in future periods. Depreciation of an asset commences when it is available for use.

Useful lives are determined based on the period over which an asset is expected to be available for use, physical exhaustion, technical or commercial obsolescence and legal limits or restrictions over the use of the asset.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Estimated useful lives are between the following ranges:

Plant and equipment	10 – 60 years
Pipelines, networks and lines	9 – 58 years
Buildings	15 – 74 years
Others	3 – 42 years

Lands are recorded independently of buildings and facilities and have indefinite useful lives therefore they are not subject to depreciation.

Depreciation methods and useful lives are reviewed annually by business units and adjusted if appropriate.

Investment properties

As investment property is recognized when the property owned by the Company is used to obtain income, appreciations or both, rather than in the production or supply of goods or services, for administrative purposes or for their sale in the ordinary course of operations.

The acquisition cost of an investment property consists of its purchase price and any directly attributable disbursement. Cost model is used for measurement after initial recognition.

3.8

Natural and environmental resources

Recognition and measurement

Ecopetrol uses the successful efforts method to account for exploration and production of crude oil and gas activities, also considering IFRS 6 – Exploration for the evaluation of mineral resources.

Exploration costs

All costs associated with exploration and evaluation are capitalized as exploration and evaluation assets pending determination of whether the exploration drilling is successful or not; if determined to be unsuccessful all costs are expensed.

Exploration costs are those incurred with the objective of identifying areas that are considered to have prospects of containing oil and gas reserves, including geological and geophysical (G&G), seismic costs, exploratory wells, exploratory-type stratigraphic test wells, among others. Exploratory wells costs are recognised as assets pending determination of commercial viability and if not are expensed as exploration expenses. Other expenditures are expensed when incurred.

An exploration and evaluation asset is classified as such once the technical feasibility and commercial viability of extracting a mineral resource are demonstrable. Before reclassification, assets are assessed for impairment, and any resulting impairment is recognised. Exploration and evaluation assets are assessed for impairment when facts and circumstances suggest its carrying value is below its recoverable value.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Development costs

Development costs correspond to those costs incurred to obtain access to proved hydrocarbon reserves and to provide facilities for extracting, treating, gathering and storing. When a project is approved for development, the accumulated value of the acquisition and exploration costs is classified as natural and environmental resources and costs subsequent to the exploration phase are capitalized as development costs of the properties that contain such natural resources assets. All development costs are capitalized, including drilling costs of unsuccessful development wells.

Production costs

Production costs are those incurred to operate and maintain productive wells as well as the corresponding equipment and facilities. The production activity includes extraction of oil and gas to the surface, its gathering, treatment and processing as well as storage in the field. Production costs are expenses at the time they are incurred unless they add reserves, in which case they are capitalized.

Production and support equipment is recognised at historical cost and is part of property, plant and equipment and subject to depreciation.

Capitalized costs also include dismantlement, retiring and restoring costs, as well as the estimated cost of future environmental obligations. The estimation includes plugging and abandonment costs, facility dismantling and environmental recovery of areas and wells. Changes arising in new abandonment liability estimations and environmental recovery are capitalized to the related asset.

Capitalized costs include net income obtained by the sale of crude oil from extensive testing, since they are considered necessary to complete the asset.

Depletion

Depletion of natural and environmental resources are determined using the unit-of-production method, using proved developed reserves as a base. Depletion factors are reviewed annually, based on the reserve report.

Reserves are audited by internationally recognized external consultants and approved by the Company’s Board of directors. Proved reserves consist of the estimated quantities of crude oil and natural gas demonstrated with reasonable certainty by geological and engineering data to be recoverable in future years from known reserves under existing economic and operating conditions, that is, at the prices and costs that apply at the date of the estimate.

Impairment

Assets associated to exploration, evaluation and production are subject to review annually for possible impairment in their recoverable value. See policy 3.11 – Impairment of assets.

3.9

Capitalization of borrowing costs

Borrowing costs related to the acquisition, construction or production of a qualifying asset that requires a substantial period of time to get ready for its intended use are capitalized as part of the cost of that asset when it is probable that future economic benefits associated with the item will flow to the Company and costs can be measured reliably. The other borrowing costs are recognized as finance costs in the period in which they are incurred.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

3.10

Intangible assets

Intangible assets with finite useful lives that are acquired separately are carried at cost less accumulated amortization and accumulated impairment losses. Amortization is recognized on a straight-line basis over their estimated useful lives. The estimated useful life and amortization method are reviewed at the end of each reporting period, with the effect of any changes in estimates being accounted for prospectively.

Expenditures on research activities are recognized as an expense in the period in which they are incurred.

3.11

Goodwill

Goodwill is the excess of the purchase price over the fair value of the identifiable assets and liabilities of acquired companies, measured at the acquisition date. The carrying amount of goodwill is not amortized and is reviewed annually for possible impairment losses.

For the purposes of impairment testing, the discounted cash flow method is used to assess impairment of goodwill. If the net present value is less than the carrying amount, the impairment loss is allocated first to reduce the carrying amount of any goodwill allocated to the Cash Generating Units (CGU) or group of CGUs and then to the other assets of the CGU or group of CGUs. Any impairment loss is recognized directly in profit or loss. Once an impairment loss on goodwill is recognized, it is not reversed in subsequent periods.

3.12

Leases

Leases are classified as finance leases whenever the terms of the lease transfer substantially all the risks and rewards of ownership. All other leases are classified as operating leases.

Assets held under finance leases, when Ecopetrol is the lessee, are recognized in the statement of financial position at an amount equal to the fair value of the leased asset or, if lower, the present value of the minimum lease payment. The corresponding liability to the lessor is included in the consolidated statement of financial position as a finance lease obligation.

Lease payments are apportioned between finance expenses and reduction of the lease obligation so as to achieve a constant rate of interest on the remaining balance of the liability. Finance expenses are recognized immediately in profit or loss.

Operating lease payments are recognized as an expense on a straight-line basis over the lease term, except where another systematic basis is more representative of the time pattern in which economic benefits from the leased asset are consumed. Contingent rentals arising under operating leases are recognized as an expense in the period in which they are incurred.

3.13

Impairment

In order to evaluate the recoverable amount of tangible and intangible assets, Ecopetrol compares the carrying amount with its recoverable amount at the end of each reporting period or earlier, if there is any indication that an asset may be impaired.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

In order to make an impairment analysis, the assets are grouped into cash generating units (CGU), provided that those assets individually considered do not generate cash inflows that, to a great extent, are independent from those generated by other assets or CGUs. The grouping of assets in different CGUs requires the exercise of professional judgment and the consideration, among other parameters, of the business segments. In this sense, in the segment of Exploration and Production, each CGU corresponds to each one of the different contractual areas commonly called “fields”; by exception, in those cases in which the cash inflows generated by several fields are interdependent on each other, those fields are grouped into a single CGU. In the case of the Refining and Petrochemicals segment, the CGU´s correspond to each one of the refineries of the group and for the segment of Transportation each pipeline is taken as an independent CGU.

The recoverable value is the higher of the fair value less costs of sale and value in use. If the recoverable amount of an asset (or of a CGU) is lower than its net book value, its book value (or that of the CGU) is reduced to its recoverable amount, recognizing a loss for impairment of value as expense.

The value in use is determined as the sum of the future discounted cash flows adjusted to the estimated risk. The estimates of future cash flows used in the evaluation of impairment of assets are made with projections of commodity prices, supply and demand estimates and the margins of the products. In case of assets or cash generating units engaged in the evaluation and exploration of reserves, proved, probable and possible reserves are considered, with a risk factor associated to them also being considered.

Once a loss for impairment of value has been recorded, future amortization expense is calculated on the basis of the adjusted recoverable value.

Impairment losses may be reversed, except those corresponding to goodwill, only if the reversal is related to a change in estimates used after the loss for impairment was recognized. These reversals shall not exceed the book value of the assets net of depreciation or amortization that would have been determined if the impairment had never been recognized.

In the reclassification of any non-current asset to non-current assets held-for-sale, the book value of these assets is revised to its fair value less costs to sell. No other provision for depreciation, depletion or amortization is recorded if the fair value less costs to sell is less than the book value.

3.14

Provisions and Contingent Liabilities

Provisions are recognized when Ecopetrol has a present obligation (legal or constructive) as a result of a past event, it is probable that Ecopetrol will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Where applicable, they are recorded at present value.

Disbursements related to the conservation of the environment for current or future operations, are accounted for as expenses or assets, as it may correspond. Disbursements related to operations of the past that do not contribute to the obtaining of current or future income, are charged to expenses.

The creation of these provisions coincides with the identification of an obligation related to environmental remediation and Ecopetrol has adequate information to determine a reasonable estimate of the respective cost.

Contingent liabilities are not recognized but are subject to disclosure in the explanatory notes whenever the outlay of resources is possible, including those which values cannot be estimated.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Asset retirement obligation

Liabilities associated to the retirement of assets are recognized when there are current obligations, either legal or implied, related to the abandonment and reclamation of wells, facilities, pipelines, buildings and equipment, as the case may be; they must be recognized using the discounted cash flow technique taking into consideration the economic limit of the field or useful life of the respective asset. When it is not possible to determine a reliable estimate in the period in which the obligation originates, a provision is recognized when there is sufficient information available to make the best estimate.

The book value of the provision is reviewed and adjusted annually considering changes in the variables used for its estimate. The increase in the provision due to the passage of time is recognised as an interest expense.

3.15

Taxes

Income tax expense is comprised of income tax payable for the period (including, income tax and complementary taxes and income tax for equality - CREE, as appropriate) and the effect of deferred taxes in each period.

3.15.1

Current tax

The provision for income tax and complementary taxes and income tax for equality (CREE), as appropriate, is calculated based on the higher of the taxable income and presumptive income (the minimum estimated amount of profitability on which the law expects to quantify and collect the income tax). Taxable profit differs from profit before tax as reported in the consolidated statement of profit or loss, because of items income or expense that are taxable or deductible in other periods, special taxable deductions, taxable losses and income or expenses that are non-taxable or non-deductible according to the applicable tax laws in each jurisdiction. Current tax is calculated by applying the enacted or substantially enacted tax rates, as of the close of the corresponding fiscal year.

3.15.2

Deferred taxes

Deferred tax is accounted for under the liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the carrying amounts of existing assets and liabilities in our consolidated financial statements and their respective tax bases. Deferred tax liability is recognized for all temporary differences. Deferred taxes asset is recognized for all deductible temporary differences and for all tax losses to be amortized, insofar there is a reasonable expectation that such differences will be offset against taxable profits.

Deferred taxes on assets and liabilities are calculated based on enacted or substantively enacted statutory tax rates that we believe will be applied to our taxable income during the years in which temporary differences between the carrying amounts and tax bases are expected to be reversed.

Deferred tax asset carrying amounts are reviewed at the end of each reporting period and reduced if it is no longer probable that tax income will be available in the future, that allows full or partial recovery of the asset.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Deferred taxes are not recognized when they arise in the initial recognition of an asset or liability in a transaction (except in a business combination) that, at the time of the transaction, does not affect the accounting or tax profit, or in respect of the taxes on the possible future distribution of accumulated profits of subsidiaries or investments accounted for by the equity method, if at the time of the distribution it may be controlled by Ecopetrol S.A. and it is probable that the retained earnings will be reinvested by the Group companies and therefore, will not be distributed to Ecopetrol S.A.

The Colombian tax regime does not contemplate any taxation on economic groups or consolidated financial situations. There is therefore no obligation under the Colombian tax regime to make the calculation of the deferred taxes based on the consolidated financial statements. Nevertheless, because of the requirement under IFRS to report deferred tax, it is calculated as the sum of the tax calculated in the individual financial statements of the companies of the Ecopetrol Business Group plus or minus deferred taxes on business combinations, intragroup transactions or other adjustments at a consolidated level.

3.16

Employee benefits

Salaries and benefits for Ecopetrol staff are governed by the Collective Labor Agreement 01 of 1977, and in their absence, by the Substantive Labor Code. In addition to the legally mandated benefits, employees are entitled to fringe benefits which are subject to the place of work, type of work, length of service, and basic salary. Annual interest of 12% is recognized on accumulated severance amounts for each employee, and the payment of indemnities is provided for when special circumstances arise that result in the non-voluntary termination of the contract, without just cause, and in periods other than the probationary period.

Ecopetrol S.A. belonged to the Special Pension Regime, under which allowances are the responsibility of the company and not a Pension Fund. However Act 797 of January 29, 2003 determined that Ecopetrol employees who joined the Company as of that date would be subject to the provisions of the General Pension Regime. Consequently allowances for employees retired as of July 31, 2010 are still Ecopetrol’s responsibility. Likewise, these employees are entitled to such pension bonus if they worked with Ecopetrol prior to January 29, 2003, but whose employment agreement expired without renewal before that date.

All social benefits of employees who joined the Company before 1990 are the responsibility of Ecopetrol, without the involvement of any social security entity or institution. The cost of health services for the employee and his/her relatives registered with the Company is determined by means of a mortality table, prepared based on facts occurring during the year.

For employees who joined the Company subsequent to the entry into effect of Law 50 of 1990, the Company makes periodic contributions for severance payments, pensions and occupational injuries the funds created for these respective obligations.

In 2008, Ecopetrol S.A. partially switched over the value corresponding to monthly pension payments from its pension liabilities, transferring the said liabilities and their underlying amounts to pension-related autonomous equities (PAP, per its acronym in Spanish). The funds transferred, and returns on those funds, cannot be redirected nor can they be returned to the Company until all of the pension obligations have been fulfilled. The switched obligation covers allowances and pensional bonds payments; while health and education remains under the labor liability in charge of Ecopetrol.

Employee-benefits are divided in four groups comprised as follows:

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Short term employee benefits and post-employment benefits

Benefits to employees in the short term correspond mainly to those which payment will be made in the term of twelve months following the closing of the period in which the employees have rendered their services. This includes mainly salaries, severance, vacations, bonuses and other benefits.

Post-employment benefits of defined contributions correspond to the periodic payments for pensions that the Company makes to the respective funds that assume these obligations in their entirety.

The above benefits are recognized as a liability after deducting any already paid amounts.

Post-employment defined benefit plans.

In the defined benefits plan, the Company provides the benefits agreed to current and former employees and assumes the actuarial and investment risks.

The following benefits are classified as long-term defined benefit plans recognized in the financial statements according to the valuations made by an independent actuarial:

Pensions

Health care to relatives

Pension bonds

Educational plan

Retroactive severances

The liabilities recognized in the balance sheet in respect of these benefit plans is the present value of the defined benefit obligation at the balance sheet date, minus the fair value of plan assets.

The defined benefit obligation is calculated annually by independent actuaries using the projected unit credit method. The present value of the defined benefit obligation is determined by discounting the estimated future cash outflows using market interest rates, and that have terms to maturity approximating the terms of the related pension obligation.

Actuarial gains and losses arising from changes in actuarial assumptions are charged or credited to equity in other comprehensive income in the period in which they arise.

There is no service cost for pensions plan as the beneficiaries were retired on as before July 31, 2010. The service cost is generated by the other benefits that includes current employees in the Company, recognized in the income statement, reflects the increase in the defined benefit obligation resulting from employee service in the current year, benefit changes curtailments and settlements.

Other long-term benefits

Other long-term benefit is the five-year term bonus which also makes part of the actuarial valuation. This benefit is a cash bonus accrues on a yearly basis and is paid out at the end of each five-year period that an employee works in the Ecopetrol S.A. The company records in the profit and loss statement the service cost, net liability interests and adjustments of defined benefit plan net liability

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Termination benefits

Termination benefits are recognized only when a detailed plan exists for such process and there is no possibility to withdraw the offer. The Company recognizes a liability and an expense for termination benefits at the earlier date between the date when the offer of said benefits cannot be withdrawn and the date when the restructuration costs are recognized.

These benefits are not part of the actuarial valuation and they relate mainly to retirement allowances.

3.17

Revenue recognition

Revenue from crude oil and natural gas sales is recognized at the time of transfer of title to the buyer, including risks and rewards of ownership. In the case of refined and petrochemical products, revenue is recognized when products are shipped by the refinery and subsequently adjusted in accordance with the volumes actually delivered. Revenue from transportation services is recognized when products are transported and delivered to the buyer in accordance with sale terms. In other cases, revenue is recognized at the time it is earned and a true, probable and quantifiable right to demand its payment arises.

Under current regulations, Ecopetrol and Refinería de Cartagena S.A, sell regular gasoline and ACPM at a regulated price.

Per Decree 1880 of 2014, the Ministry of Mines and Energy semi-annually calculates and liquidates Ecopetrol’s net position to be stabilized for each fuel by the Fuel Price Stabilization Fund (FEPC). The net position is calculated by summarizing all differentials throughout the half year and the result is an amount in pesos in favor of the Company or the FEPC and chargeable to the FEPC. The differential is calculated as the volume reported by the Company at the time of sale multiplied by the difference between the international parity price and the reference price. The international parity price the daily prices of gasoline and diesel oil of the respective month in pesos, indexed to the Unites States of America Gulf market in accordance with Resolution 18 0522 of 2010 and the Producer Price reference defined by the Ministry of Mines and Energy.

3.18

Cost and expenses

Costs and expenses are presented according to their function; they are detailed in the related disclosures in cost of sales, administrative, operating, projects and other associated expenses.

3.19

New standards

New standards and interpretations that apply for annual periods beginning on 1 January 2016 or later, and which have not been applied in preparing these consolidated financial statements are as follows:

Standard

Description

Effective date

IFRS 9 – Financial Instruments

Includes the requirements of classification and measurement of impairment and hedge accounting; and in relation to the impairment of financial assets, IFRS 9 requires an expected credit loss model, as opposed to an incurred credit loss model under IAS 39. Therefore it is no longer necessary for a credit event to have occurred before credit losses are recognized.

January 1st, 2018

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

IFRS 15 – Revenue from Contracts with customers	Establishes a single comprehensive model for entities to use in accounting for revenue arising from customers. Under IFRS 15, an entity recognizes revenue when (or as) a performance obligation is satisfied, i.e. when “control” of the goods or services underlying the particular performance obligation is transferred to the customer. IFRS 15 will supersede the current revenue recognition guidance including IAS 18 – Revenue, IAS 11 Construction Contracts and the related interpretations when it becomes effective.	January 1st, 2017

Amendments to IFRS 11 – Accounting for Acquisitions of Interests in Joint Operations	The amendments to IFRS 11 provide guidance on how to account for the acquisition of a joint operation that constitutes a business.	January 1st, 2016

Amendments to IAS 16 – Property, plant and equipment and IAS 38 – Intangible assets	Amendments clarify the acceptable methods of Depreciation and Amortization and prohibit entities from using a revenue-based depreciation method for items of property, plant and equipment. The amendments introduce a rebuttable presumption that revenue is not an appropriate basis for amortization of an intangible asset.	January 1st, 2016

Amendment to IFRS 10 - Consolidated Financial Statements and IAS 28 Investments in Associates and Joint Ventures	Amendments clarify that a full gain or loss is recognized when a transaction involves a business (as defined under IFRS 3). A partial gain or loss is recognized when a transaction involves assets that do not constitute a business, even if those assets are in a subsidiary.	January 1st, 2016

Ecopetrol does not anticipate that the application of the new and the amended standards will have a significant impact on the consolidated financial statements.

First time adoption of International Financial Reporting Standards - IFRS

As part of the implementation process of International Financial Reporting Standards (hereinafter ¨IFRS¨) In conformity with the provisions of Law 1314 of 2009, Regulatory Decree 2784 of December 2012 and Decrees 3023 and 3024 of 2013, Ecopetrol S.A. belongs to Group 1 of preparers of financial information and, consequently, the issuance of the first financial statements under Financial Reporting Standards shall be as of December 31, 2015 and opening statement financial position as of January 1, 2014, being the transition date.

In preparing these Financial Statements in accordance with IFRS 1, First-time Adoption of International Financial Reporting Standards (IFRS 1), we applied the following optional and mandatory exemptions from full retrospective application of IFRS:

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

4.1

Exemptions to retrospective application chosen by the company

(a)

Business combinations – IFRS 1 includes an optional exception for business combinations as an alternative to applying IFRS 3 retrospectively (business combinations that occurred before the date of transition to IFRS). However, the entity may elect to restate business combinations from any date prior to the date of transition. If any business combination is restated, then all later business combinations must also be restated and also has to apply IFRS 10.

Ecopetrol applied the exemption set out above for all business combinations that occurred up to the date of transition. Therefore, it has not restated any business combination that took place before January 1, 2014.

(b)

Fair value used as deemed cost of property, plant and equipment – The exemption to IFRS 1 allows fair value, at the date of the transition to IFRS, to be used as deemed cost of property, plant and equipment, intangible assets and investment properties. IFRS 1 establishes that a revaluation under previous GAAP (RCP), at the date of transition or previous, may be used as deemed cost, at the date of the revaluation, if it is broadly comparable to:

fair value; or

Depreciated cost under IFRS.

Ecopetrol elected to measure certain land properties at fair value as at the transition date and use that amount as its deemed cost in the opening IFRS balance sheet. Fair value was measured on the basis of a valuation performed by external, independent experts. See Note 4.2 (1) (i)

For other Property, plant and equipment items, useful lives where established according to appraisals and technical support from the operating areas of the Company. Accumulated depreciation was recalculated based on these new useful lives and adjustments were recognized in the opening IFRS balance sheet. For minor property, plant and equipment items such as office equipment, computer equipment and vehicles the Company has considered depreciated or revaluated cost under RCP as deemed cost at transition date, since it is comparable to its depreciated cost in accordance with IFRS. See Note 4.2 (1) (v)

(c)

Leases – The exemption on IFRS 1 establishes that a company may determine whether arrangements in existence on the date of the transition to IFRS contain leases on the basis of the facts and circumstances existing at the date of transition.

Ecopetrol elected to apply this exemption and therefore has considered the facts and circumstances existing at the date of transition to determine the existence of implied leases in its contracts and agreements.

(d)

Decommissioning liabilities included in the cost of property, plant and equipment – A first-time adopter may elect not to comply with requirements of IFRIC 1 for changes in decommissioning, restoration and similar liabilities. Therefore the Company can:

Measure the liability as at the date of transition in accordance with IAS 37;

ii.

To the extent that the liability is within the scope of IFRIC 1, estimate the amount that would have been included in the cost of related asset when the liability arose, by discounting the liability to that date using its best estimate of the historical risk-adjusted discount rate that would have applied for that liability over the intervening period and;

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

iii.

Calculate the accumulated depreciation on that amount, as at the date of transition to IFRSs, on the basis of the current estimate of the useful life of the asset, using depreciation policy adopted by the entity under IFRS.

Ecopetrol elected to apply this exemption and measure its Asset Retirement Obligation as at the date of transition and estimate the cost of the related asset and depreciate it to the transition date.

(e)

Borrowing costs – IFRS 1 permits the entity to either capitalize borrowing costs relating to the construction of any qualifying assets; or designate a date before the date of transition and apply the standard to borrowing costs related to qualifying assets for which the commencement date for capitalization is on or after that designated date. (See Note 4.2(1)(iv))

The Company elected to apply this exemption and adopted as a policy to capitalize borrowing costs under IAS 23 starting on the transition date, January 1, 2014.(See Note 4.2(1)(ii))

(f)

Classification of financial instruments – IFRS 1 includes a number of optional exemptions for first-time adopters, applying IFRS 9, in relation to the designation of previously recognized financial instruments. Ecopetrol elected to apply the following exemptions:

A first-time adopter may designate a financial asset as at fair value through profit or loss provided that the asset meets the criteria for such classification as at the date of transition to IFRS.

ii.

An entity may designate an equity instrument as at fair value through other comprehensive income provided that the asset meets the criteria for such classification as at the date of transition.

(g)

Fair value measurement of financial assets or financial liabilities at initial recognition – Ecopetrol applied measurement of financial assets and liabilities at fair value prospectively at the date of transition.

(h)

Financial assets and intangible assets service concession arrangements – Ecopetrol recognized financial assets and intangible assets at carrying amounts at the date of transition to IFRS.

(i)

(j)

The Effects of Changes in Foreign Exchange Rates – IFRS 1 permits the entity do not determine the cumulative translation differences recognized in other comprehensive income that existed at the date of transition to IFRSs. If this exemption is applied, the cumulative translation differences for all foreign operations are deemed to be zero at the date of transition to IFRSs.

4.2

Reconciliation of financial position

The reconciliations that follow reflect the impact of the transition to IFRS on the financial position previously reported by Ecopetrol:

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Equity reconciliation at March 31, December 31 and January 1, 2014:

	December 31,			March 31,			January 1,
	2014			2014			2014
Consolidated shareholders’ equity under previous GAAP		68,545,972			63,053,198			71,119,203
Property, plant and equipment and natural resources (1)		(22,901,793	)		(21,190,074	)		(21,246,532	)
Non-controlling interest in Equion (2)		(1,017,201	)		(1,281,457	)		(1,222,118	)
Deferred tax (3)		(530,725	)		(69,978	)		(268,794	)
Deferred charges (4)		(230,516	)		(528,186	)		(706,655	)
Non-controlling interests (5)		4,195,935			4,731,000			4,573,748
Foreign currency translation (6)		1,400,203			23,577			-
Liabilities and assets at amortized cost, equity method and others (7)		1,378,162			597,264			132,252
Employee benefits liability (8)		234,162			(1,272,734	)		(1,389,846	)
Consolidated equity under IFRS		51,074,199			44,062,610			50,991,258

(1)

The detail of adjustments related to property, plant and equipment and natural resources, is as follows:

	December 31,			March 31,			January 1,
	2014			2014			2014
Reversal of revaluation and provisions recognized under RCP (i)		(21,211,265	)		(22,241,913	)		(22,294,768)
Non-capitalizable borrowing costs, elimination of inflation adjustments and others (ii)		(2,321,353	)		(260,311	)		(341,480	)
Assets impairment (iii)		(495,110	)		(414,806	)		(428,151	)
Abandonment costs (iv)		(492,779	)		(298,630	)		(366,847	)
Depreciation (v)		1,618,714			2,025,586			2,184,715
Total property, plant and equipment adjustments		(22,901,793	)		(21,190,074	)		(21,246,532	)

Reversal of revaluations and provisions recognized under previous GAAP were made since the Company elected to recognize its property, plant and equipment, other than lands, at its cost.

ii.

Mainly includes:

Borrowing costs non-capitalized under IFRS in the amount of $2,212,286 (March 31, 2014 - $101,067. Due to the exemption adopted by the Company which is described in Note 4.1 there is no value for this adjustment at the opening balance. Under previous GAAP, the Company capitalized a higher value of expense for exchange differences relating to capital expenditures, while under IFRS, the exchange difference is limited to a hypothetical interest expense in the functional currency and the interest expense on the debt.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Sales of oil production for assets under extensive tests in exploration and evaluation phase are recorded as a lower value of assets under IFRS of ($157,420) (March 31, 2014 - $146,677 and (January 1, 2014 - $146,985). Under previous GAAP these sales are recognized as income.

Adjustment for assets related to incorporated institutional equity in the amount of $41,204 (March 31, 2014 - $40,300 and January 1, 2014 - $43,033)

A decrease of $116,029 (March 31 and January 1, 2014 - $174,400) due to embedded leases not recognized under previous GAAP and other minor amounts.

iii.

Recognition of impairment of assets in accordance with IAS 36 – Impairment of assets, taking into account that the Company established its Cash Generating Units (CGUs) as the oil and gas production fields or groups of fields, refineries and pipelines.

iv.

Discount to present value of dismantling and abandonment of asset costs for the Business Group companies and depreciation of the related abandonment assets under IFRS. The amounts were not discounted under previous GAAP.

Under previous GAAP useful lives of property, plant and equipment were established under tax criteria, while under IFRS useful lives are established based on technical and economic criteria. Therefore depreciation was recalculated to reflect this change. Moreover, for the exploration and production segment’s fixed assets, the depreciation method was changed from straight-line to technical-units of production. In addition, we eliminated the inflation adjustments due to they are not permitted under IFRS. These values were eliminated from the opening balance.

(2)

Non-controlling interest in Equion: There is a lower value of equity due to the fact that under IFRS, the investment in Equion is recognized using the equity method, while under previous GAAP Equion was recorded as a consolidated entity.

(3)

Net decrease in deferred tax generated by variations in measurement of assets and liabilities under IFRS that resulted in temporary differences in assets (liabilities). Main variations are: increase in carrying amount of property, plant and equipment generating a higher deferred tax liability, presumptive tax excesses and tax loss carry forwards generating a higher deferred tax asset.

(4)

Deferred charges: Decrease due to the fact that some assets recognized as deferred assets under previous GAAP are considered expenses under IFRS, such as tax on equity and others.

(5)

Non-controlling interest: Increase due to the fact that under IFRS it is presented as an equity item, while under previous GAAP is presented as a liability.

(6)

Corresponds to the foreign currency translation, for consolidation purposes, of those companies under the Business Group with a functional currency different to Colombian peso.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

(7)

Includes the following adjustments:

Financial obligations and accounts payable valuation at amortized cost of 735,433 (March 31, 2014 - $615,981 and January 1, 2014 - $38,257). Under Previous GGAP, transaction costs are recorded directly in the statement of income, while IFRS are taken into account for calculating the effective interest rate and carried at amortize under cost.

Equity method for investments in associates and jointly controlled entities under IFRS of $652,562 (March 31, 2014 - $260,195 and January 1, 2014 - $319,729). The adjustment is mainly due to the variation in the calculation of the equity method because the asset base of these associates was determined in accordance with IFRS.

Financial assets at fair value and other minor adjustments $9,833 (March 31, 2014-$278,912). At January 1, 2014, other adjustments primarily include adjustments of inventory at net realizable value and the amortized cost of receivables is presented of $211,046.

(8)

Under IFRS, the assets that back the pension liability (pension-related autonomous equities - PAP) are part of the balance sheet, as well as the liabilities corresponding to labor obligations subject to actuarial estimation (pensions, pension bonds, five year period benefit, health and education). Such estimation is made under IFRS guidelines using the projected unit credit method, which differ from estimations performed under previous GAAP.

Another difference between IFRS and previous GAAP corresponds to the discount rate used in the actuarial calculations under IFRS is a long-term rate while previous GAAP, the discount rate is fixed by law (the average inflation in years).

4.3

Reconciliation of net income

Reconciliation of net income for the year ended December 31, 2014 and the three month period ended March 31 2014:

	December 31			March 31
	2014			2014
	(12 months)			(3 months)
Consolidated net income under previous GAAP		7,510,270			3,287,378
Foreign currency exchange and borrowing costs (a)		(1,739,471	)		186,901
Consolidation, crude oil over/under lift, inventories, equity method and other (b)		236,478			(77,979	)
Property, plant and equipment and natural resources (c)		(488,709	)		(14,509	)
Deferred taxes (d)		533,953			(69,978	)
Deferred charges (e)		527,712			521,326
Actuarial liability (f)		438,863			-
Consolidated net income under IFRS		7,019,096			3,888,101
Accumulated foreign currency translation		2,717,632			(291,201	)
Net fair value gain (loss) on available-for-sale financial assets		76,436			29,065
Remeasurement of defined benefit obligation		782,194			62,147
Total comprehensive income under IFRS		10,595,358			3,688,112

(a)

In 2014 the effect is a net decrease of $1,739,471 mainly due to: lower value of capitalized borrowing costs and foreign currency exchange amounting to $2,212,286 due to a increase in the foreign currency exchange generated for the Group’s companies with functional currency different to Colombian peso in the amount of $472,815.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

(b)

Decrease in net income in 2014 by $236,478 mainly due to: a) ($167,998) adjustments at consolidation level of differences between previous GAAP and IFRS, mainly in unrealized gains and equity method in associates; b) ($21,395) adjustments to over/under lift at fair value; c) ($77,753) adjustments to inventory at net realizable value; and d) ($2,271) for other minor adjustments. These adjustments are offset by an increase of $501,353 mainly because of the application of equity method and the effects in non-controlling interests.

During first quarter of 2014 net income decreased by $77,979 mainly due to: a) ($99,243) of adjustments to over/under lift at fair value; b) ($27,856) equity method and non-controlling interests adjustments and; c) a $49,120 increase mainly due to differences in consolidation between IFRS and previous GAAP.

(c)

Property, plant and equipment generated a net decrease of $488,709 in 2014 ($14,509 – first quarter of 2014) mainly related to: a) increase by $46,740 ($131,529 – first quarter of 2014) for a lower depreciation and amortization expense and; b) decrease by $535,449 ($146,307 – first quarter of 2014) due to:

impairment of assets $90,332 ($28,773 first quarter of 2014)

ii)

decrease related to discount to present value of abandonment costs liability $143,059 ($69,528 first quarter of 2014)

iii)

A decrease on other fixed assets for costs that cannot be capitalized under IFRS and others minor items by $302,058 ($49,006 first quarter of 2014).

(d)

There are differences from deferred tax under IFRS and previous GAAP, due to variations in the measurement of assets and liabilities under IFRS, which have resulted in temporary differences in assets (liabilities). In 2014 deferred tax expense decreased by $533,953. Among the main variations in net income under IFRS for 2014 there are a) higher value of deferred tax assets by $671,741 originated in the change for recording capitalized interests and foreign currency exchange b) increase in the carrying amount of property, plant and equipment as a result of a lower rate of depreciation under IFRS and c) other temporary differences that generate a lower value of deferred tax by $4,239. During the first quarter of 2014, there is a decrease in income by $ 69,978, due to: a) lower value of deferred tax assets by ($34,078) caused by a lower carrying amount of property, plant and equipment construction in progress under IFRS compared to previous GAAP, b) Difference in the abandonment cost under previous GAAP that generate higher deferred tax expense by $23,509 and c) other minor adjustments by $10,569.

(e)

Deferred charges generated an increase in net income mainly as a result of elimination of the last equity tax payment by $490,923 which under IFRS is recognized in equity as an opening financial statement adjustment and under previous GAAP was expensed during 2014. Elimination of assets that under IFRS cannot be classified as deferred assets by $33,629 ($30,043 - first quarter of 2014).

(f)

Adjustments in actuarial valuations that relate to long-term employee-benefits (pensions, severance, five-year term, health and education) were performed in accordance with IFRS criteria. The last valuation was made at December 31, 2014.

4.4

Reconciliation of cash flow

At the end of the first quarter of 2014, cash and cash equivalents under previous GAAP amounted $9,511,483 and under IFRS amounted to $9,900,750. The difference between IFRS and previous GAAP of $389,267 is explained by:

a) A $241,358 decrease in cash for the non-consolidation of Equion Energy Limited.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

b) A $153,708 decrease due to the fact that changes of criteria of presentation of resources recorded under previous GAAP as other financial assets.

c) An increase of $476,909 due to at the end of March 2014, the consolidation under previous GAAP was prepared with the Reficar's financial statements available at that date (February 2014). For IFRS, available information corresponded to March 2014.

The transition from Colombian GAAP to IFRS did not materially change the underlying cash flows of the Company.

The main changes in operating activities are justified by the impact explained in section 4.3 and reclassifications of financial interest paid and receipts, which for previous GAAP regulations were recorded under operating cash flows. The change in investment activities is generated by the presentation of interest received under investing activities and the difference in the criteria for capitalization of maintenance of fixed assets; and the change in financing activities is for the presentation of interest paid under financing activities which were presented within operating activities under previous GAAP.

Cash and cash equivalents

The balance of cash and cash equivalents is comprised as follows:

	March 31,		December 31,		January 1,
	2015		2014		2014
Banks and corporations		7,514,895		5,117,770		6,429,567
Short term investments		2,288,523		880,455		616,344
Special funds (1)		1,136,478		1,016,780		1,494,760
Cash		1,107		726		467
		10,941,003		7,015,731		8,541,138

(1)

Includes restricted cash used exclusively for the repayment of the loan acquired by Oleoducto Bicentenario S.A.S. for the amount of $94,432 as of March 31, 2015 ($96,740 as of December 31, 2014 and $111,482 as of January 1, 2014).

Fair value of cash and cash equivalents approximates its carrying amount due to its short-term nature (less than 3 months maturity) and high liquidity.

Trade and other receivables

The balance of trade and other receivables is comprised as follows:

	March 31,			December 31,			January 1,
	2015			2014			2014
Current portion
Customers
Foreign		1,791,028			1,718,507			2,934,134
National		1,344,818			1,203,480			1,118,960
Related parties (see note 29)		145,056			75,561			164,711
Price differential to be received from the Ministry of Mines and Energy (1)		314,872			750,055			1,058,739
Accounts receivable from employees (2)		139,332			135,421			60,177
Industrial service clients		18,361			1,686			13,004
Reimbursements and investments yields		15,955			141			122
Doubtful accounts		9,169			8,667			25,819
Various debtors		634,321			577,253			210,906
Total		4,412,912			4,470,771			5,586,572
Minus – Allowance for doubtful accounts (3)		(9,169	)		(8,667	)		(25,819	)
Total current		4,403,743			4,462,104			5,560,753
Non-current portion
Customers
Foreign		15,848			16,530			2,506
National		9,478			9,788			5,664
Accounts receivable from employees (2)		318,589			305,117			244,207
Doubtful accounts		238,947			235,810			227,372
Price differential to be received from the Ministry of Mines and Energy (1)		77,510			77,510			77,510
Others		47,876			46,231			378,274
Total		708,248			690,986			935,533
Minus – Allowance for doubtful accounts (3)		(238,947	)		(235,810	)		(227,372	)
Total Non-current		469,301			455,176			708,161

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

(1)

Account receivable from the Ministry of Finance and Public Credit, arising from the regular motor gasoline and diesel price differentials pursuant to Resolution 180522 issued on March 29, 2010. During the first quarter of 2015, this account has been reduced as a result of the International Parity Price has been lower than the index price. The Ministry makes the payment in consideration of the resolution for the net liquidation position in favor of Ecopetrol for months with pending payments.

(2)

The administration, management and control of loans granted to employees by Ecopetrol were transferred to Cavipetrol, which, in its capacity as administrator, monitors, in its database and financial system, the details per employee of said loans and their respective conditions.

(3)

The following shows the changes in allowance for doubtful accounts:

	March 31			December 31
	2015			2014
Opening balance		244,477			253,191
Additions (new allowances)		44			2,430
Accounts receivable write-off		(225	)		(19,628	)
Effects of exchange rate changes on allowances and other		3,820			8,484
Closing balance		248,116			244,477

Carrying amounts of trade and other receivables approximates to its fair value.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Inventories

The balance of Inventories is comprised as follows:

	March 31,			December 31,			January 1,
	2015			2014			2014
Finished products
Crude oil		673,079			611,718			1,019,621
Fuels		866,408			931,440			894,837
Petrochemicals		111,684			140,118			86,101
Purchase products
Fuels		102,817			44,169			65,615
Crude oil		210,529			224,106			296,289
Petrochemicals		36,976			25,515			21,732
Raw materials
Crude oil		160,910			174,290			255,748
Fuels		40,889			58,158			40,011
Agricultural Products		685			681			-
Products in process
Fuels		299,415			376,635			484,745
Petrochemicals		17,138			16,133			11,282
Materials for the production of goods		417,088			440,807			419,107
Materials in transit		47,452			62,083			79,229
Total		2,985,070			3,105,853			3,674,317
Minus – Allowance for inventories (1)		(181,030	)		(151,997	)		(100,490	)
Total		2,804,040			2,953,856			3,573,827

(1) The following shows a breakdown of the changes in the allowance for inventories:

	March 31,			December 31,
	2015			2014
Opening Balance		151,997			100,490
Allowance increase		35,748			74,195
Use of allowance		(6,715	)		(22,688	)
Closing Balance		181,030			151,997

The Increase in the inventory allowance is mainly due to the adjustment of inventory to its net realizable value due to the current fluctuations in international crude oil prices and derivatives.

Other financial assets

The balance of other financial assets is comprised as follows:

	March 31,		December 31,		January 1,
	2015		2014		2014
Assets measured at fair value through profit and loss (1)
Securities issued by financial entities		1,628,414		610,678		711,417
Securities issued or secured by US government		392,302		257,697		271,525
Securities issued or secured by Colombian government		328,324		271,253		92,969
Securities issued or secured by government sponsored enterprise (GSEs)		265,994		261,896		204,259
Other financial assets		37,068		27,137		62,238
		2,652,102		1,428,661		1,342,408
Assets measured at amortized cost
Other financial assets		567,431		600,738		832,790
Securities issued or secured by Colombian government		98		46,971		142,348
		567,529		647,709		975,138
Total		3,219,631		2,076,370		2,317,546

Current		2,547,765		1,586,314		1,948,172
Non-current		671,866		490,056		369,374

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

(1)

Includes restricted resources made up of fixed yield investments entered into based on the court rulings linked to the Derecho Comuneros – Santiago de las Atalayas y Pueblo Viejo de Cusiana proceedings, with regard to the attachment and seizure of royalty payments that Ecopetrol was to have paid pursuant to Royalty Contracts Nos. 15, 15A, 16 and 16A, declared null by statute in the State Council ruling of September 13, 1999. At March 31, 2015 this resources amount to $594,011 (2014 - $548,412 and January 1, 2014 -$371,386).

The classification of the other financial assets at fair value at March 31, 2015, December 31, 2014 and January 1, 2014 is comprised as follows:

	Level 1		Level 2		Level 3		Total
Assets measured at fair value through profit and loss
Securities issued by financial entities		-		70,014		1,558,400		1,628,414
Securities issued or secured by US government		-		328,324				328,324
Securities issued or secured by Colombian government		327,717		64,586				392,303
Securities issued or secured by government sponsored enterprise (GSEs)		-		265,993				265,993
Other financial assets		-		37,068				37,068
		327,717		765,985		1,558,400		2,652,102

	Level 1		Level 2		Level 3		Total
Assets measured at fair value through profit and loss
Securities issued by financial entities		-		210,296		400,381	610,677
Securities issued or secured by US government		-		271,252			271,252
Securities issued or secured by Colombian government		257,697		-			257,697
Securities issued or secured by government sponsored enterprise (GSEs)		-		261,896			261,896
Other financial assets		-		27,138			27,138
		257,697		770,582		400,381	1,428,660

	Level 1		Level 2		Level 3		Total
Assets measured at fair value through profit and loss
Securities issued by financial entities		-		641,657		69,761		711,418
Securities issued or secured by US government		-		92,969				92,969
Securities issued or secured by Colombian government		135,662		135,863				271,525
Securities issued or secured by government sponsored enterprise (GSEs)		8,251		196,007				204,258
Other financial assets		5,730		56,508				62,238
		149,643		1,123,004		69,761		1,342,408

Ecopetrol´s portfolio securities are valued, in their majority, at market prices. As well, the portfolio is made up by some investments in instruments called CDTs (Certificates of Deposit) in pesos that use the margin methodology for the calculation of the market value.

For the US dollar denominated investments, five information suppliers are taken as reference: JP Morgan, Bloomberg, Merrill Lynch, Reuters and Infovalmer. For the investments denominated in pesos, the supplier of prices and margins is Infovalmer, an entity authorized by the Financial Superintendency of Colombia that provides the information for valuation of investments locally.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Tax assets and liabilities and current and deferred income tax

The balance of current tax assets and liabilities is comprised as follows:

	March 31,		December 31,		January 1,
	2015		2014		2014
Current tax assets
Taxes credits to be claimed to the government		1,371,024		1,474,388		1,324,436
Income tax and income tax for equality (CREE)		342,136		324,758		132,646
Other receivables taxes		145,266		219,340		88,243
Total		1,858,426		2,018,486		1,545,325

Current tax liabilities
Income tax and complementary taxes		964,343		537,745		446,178
Income taxes for equality -CREE		478,121		674,977		1,452,575
Income taxes for equality -CREE surcharge		17,424		-		-
Industry and commerce tax and other minor taxes		358,526		412,427		247,138
National tax on gasoline and surtax on gasoline		290,082		269,612		267,459
Wealth tax		491,183		-		552,927
Total		2,599,679		1,894,761		2,966,277

Income tax and complementary taxes

The Tax regulations applicable to Ecopetrol S.A.’s establish the following:

(a)

Starting January 1, 2013, taxable revenues in Colombia are taxed at the rate of 25% for income tax and complementary taxes, except for taxpayers with an express provision for special rates. The basis for determining the income tax may not be lower than 3% of the taxpayer’s net equity on the last day of the immediately preceding taxable period (presumptive income), except for those taxpayers that have different regulations established by law.

(b)

Beginning with the 2007 fiscal period, the inflation adjustments system was eliminated for tax purposes, and the tax on capital gains was reestablished for legal persons on the total taxable capital gains obtained by taxpayers during the year, which will be taxed in accordance with the rates that are in effect at the closing of each period.

(c)

Starting January 1, 2013, Law 1607 of December 2012 created the income tax for equality (CREE) as a contribution from taxpaying companies and legal and naturalized persons filing income and complementary taxes to benefit workers, job creation and social investment. Taxpayers of income and complementary taxes are: Corporations, Legal persons and similar foreign corporations and entities with national source income. Taxpayers should not file the CREE return, if they are Individuals, Nonprofit entities, Companies declared as part of the free trade zone as of December 31, 2012 or that had filed an application as of December 31, 2012, Free trade zone users subject to the special income and complementary tax rate established in article 240-1 TC.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Tax reform

On December 23rd, 2014, Law 1739 provided for tax reform including the following provisions:

Set a surtax on the income tax for equality (CREE) for those tax payers established in the article 20 of Law 1607 of 2012. The surtax will increase the rate of income tax for equality (CREE) by 5% in 2015, 6% in 2016, 8% in 2017 and 9% on 2018.

Established a wealth tax, which defines as its taxable event the possession of wealth as of January 1, 2015, 2016 and 2017, to be paid by income tax payers. Wealth tax is generated by the possession of wealth as of January 1, 2015, that is higher than or equal to $1.000 million pesos. In this law, the concept of wealth is equal to gross equity minus debt at said date. At March 31, 2015, Ecopetrol recognized the wealth tax of 2015, considering the best estimate of its equity. The Company will adjust the amounts estimated when the tax settlement is made in May 2015.

Income tax expenses

The following shows a breakdown of the income tax and complementary taxes, income tax for equality – CREE and income tax for equality – CREE surcharge recognized in profit and loss for the first quarter of 2015 and 2014:

	2015			2014
Current taxes
Income tax		530,202			1,531,494
Income tax for equality – CREE		154,884			542,184
Income tax for equality – CREE surcharge		71,466			-
		756,552			2,073,678
Deferred taxes
Deferred income tax		(245,370	)		(67,906	)
Deferred income tax for equality – CREE		(76,777	)		88,457
Deferred income tax for equality – CREE surcharge		37,971			-
		(284,176	)		20,551
Income tax expense		472,376			2,094,229

Income tax expense is recognised based on management's estimate of the weighted average annual income tax rate expected for the full financial year. The estimated average annual tax rate used for the first quarter of 2015 is 57.03% (the estimated annual tax rate for the first quarter of 2014 was 33%). This increase is mainly due to adjustments related with foreign exchange currencies on investments due to a higher devaluation in 2015 as compared to the same period in 2014, an increase on leases related with the new wealth tax and the CREE surtax for 2015.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Deferred income tax

The balance of deferred taxes at March 31, 2015, December 31, 2015 and January 1, 2014 is comprised as follows:

	March 31,			December 31,			January 1,
	2015			2014			2014
Asset – Deferred income tax and complementary taxes		2,366,709			2,376,651			2,795,133
Asset – Deferred income tax for equality – CREE		603,911			632,434			822,951
Asset – Deferred income tax for equality – CREE surcharge		87,439			81,928			-
		3,058,059			3,091,013			3,618,084

Liability – Deferred income tax and complementary taxes		(2,682,414	)		(2,908,435	)		(3,007,027	)
Liability – Deferred income tax for equality – CREE		(943,532	)		(1,033,122	)		(1,029,461	)
Liability – Deferred income tax for equality – CREE surcharge		(162,003	)		(98,586	)		-
		(3,787,949	)		(4,040,143	)		(4,036,488	)
Total deferred income tax		(729,890	)		(949,130	)		(418,404	)

The following shows a breakdown of the changes in deferred assets and liabilities:

	March 31,		December 31,		January 1,
Deferred tax asset in relation to:	2015		2014		2014
Accounts payable		167,731		203,347		547,888
Inventories		1,026		57,970		726
Trade and other receivables		1,149		18,371		41,480
Property, plant and equipment		450,785		378,318		290,328
Other assets		65,915		63,807		537,200
Financial obligations		143,130		105,206		47,457
Provisions of employee benefits		228,991		258,973		469,633
Estimated liabilities and provisions		1,712,673		1,721,087		1,390,170
Other liabilities		28,714		29,986		44,905
Income received in advance		902		838		563
Tax losses		215,589		215,589		202,240
Intangibles		-		-		87
Tax liabilities		1,879		744		80
Excess of presumptive income tax		38,297		34,652		38,170
Others		1,278		2,125		7,157
Total		3,058,059		3,091,013		3,618,084

	March 31,		December 31,		January 1,
Deferred tax liabilities in relation to:	2015		2014		2014
Trade and other payables		22,144		21,053		39,258
Financial obligations		106,802		139,585		146,590
Trade and other receivables		50,958		5,928		5,943
Natural and environmental resources (1)		1,493,855		1,358,247		1,939,618
Investments		36,050		27,626		23,610
Goodwill (2)		518,411		514,878		322,124
Inventories		3,266		11,322		323,525
Property, plant and equipment (1)		1,294,275		1,790,018		1,131,025
Other assets		36,158		37,257		58,271
Other		226,030		134,229		46,524
		3,787,949		4,040,143		4,036,488

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

(1) For tax purposes, natural resources and PP&E have a specific useful life. According to IFRS the useful life is determined by a technical analysis. This difference will result in a difference in the depreciable basis for accounting and tax purposes.

(2) According to Colombian tax law, intangibles and goodwill are able to be amortized, for IFRS purposes, goodwill cannot be amortized, this difference results in a deferred tax liability.

Variations of deferred tax balances at March 31, 2014 and 2015 were recognized through profit or loss with the exception of the following that were recognized as set out below:

Concept	2015			2014		Recognized through:
Deferred (liability) asset – financial assets		(75,595	)		14,973	Other comprehensive income
Deferred asset – Remeasurement of defined benefit obligation		54,842			32,015	Other comprehensive income

Accumulated taxable losses will be deductible in future years, depending on the country regulations. As of December 31, 2014, companies of the Group had accumulated taxable losses and excess of presumptive income as follows:

Expiration date	Tax losses December 2014		Deferred taxes December 2014		Excess of presumptive income December 2014		Deferred taxes December 2014
2014		203		30		77,982		11,697
2015		-		—		59,092		8,864
2016		-		-		36,460		5,469
2017		-		-		33,953		5,292
2018		-		-		16,169		2,550
2019		-		-		1,019		252
2020		-		-		2,143		528
Without expiration date		1,389,528		215,558		-		-
Total		1,389,731		215,588		226,818		34,652

Most of the tax losses carry forward (without expiration date) related to a subsidiary's operation (Reficar). According to tax legislation, Reficar's operational activity is taxable under a special tax rate of 16%.

Transfer pricing

Income taxpayers who had entered into transactions with related parties abroad, and/or with residents of countries considered to be tax havens, are under the obligation of determining, for income tax purposes, their ordinary and extraordinary income, costs and deductions, and assets and liabilities, taking into account the denominated market prices and profit margins for these transactions (Arm’s length principles). Based on the opinion of the Company’s advisor, no significant changes are expected for taxable year 2014 related to the compliance with the principle of full jurisdiction set out in Article 260-2 of the Colombian Tax Code, and there are no foreseen adjustments to the determination of income tax expenses for the said year.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

To date, the Company, with its Transfer Pricing external consultants, is in process of preparing the informative Transfer Pricing statement of year 2014 and its corresponding corroboratory documentation; however, based on preliminary results, no adjustments to the income tax provision derived from the 2014 price analysis, affecting the results of the period, are required.

10.

Non-current assets held for sale

The balance of Non-current assets held for sale is comprised as follows:

	March 31,		December 31,		January 1,
	2015		2014		2014
Equity instruments (1)
Empresa de Energía de Bogotá (1)		1,025,534		1,072,867		968,735
Interconexión Eléctrica S.A		437,816		508,527		536,222
Other minor assets		1,438		1,434		1,438
Total		1,464,788		1,582,828		1,506,395

(1)

In April 13, 2015 as part of Law 226 of 1995, the National Government issued approval to start the divestiture process of the Shares that Ecopetrol S.A. owns in Interconexión Eléctrica S.A. E.S.P., taking in the recommendation of Ecopetrol’s Board of Directors. Ecopetrol S.A.’s stock ownership in Interconexión Eléctrica S.A. ESP amounts to a total of 58,925,480 shares (equivalent to a 5.32% of the total outstanding shares).

We have obtained all governmental authorizations in order to start the divestiture process (Decree 2305 of November 13, 2014) of the shares that Ecopetrol S.A. owns in Empresa de Energía de Bogotá S.A. ESP. Stock ownership is for a total of 631,098,00 stocks (equivalent to a total of 6.87% of the total outstanding shares).

Resources obtained from the sale will be used to fund the Company’s investment plan.

These equity instruments are measured at fair value through other comprehensive income. Its hierarchy level is 1, using as reference quoted prices of shares on the Bolsa de Valores de Colombia.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

11.

Other assets

The balance of other assets is comprised as follows:

	March 31,		December 31,		January 1
	2015		2014		2014
Current
Partners in joint operations (See note 30)		732,015		763,444		158,826
Advanced payments to contractors and suppliers		446,226		328,677		332,001
Prepaid expenses		172,754		259,575		181,260
Related parties (see note 30)		52,141		9,338		15,558
Other advances and agreements		58,875		31,493		20,057
Total current		1,462,011		1,392,527		707,702
Non-current
Trust funds (1)		489,818		483,480		460,545
Prepaid expenses		230,905		226,402		401,235
Facility abandonment funds		23,779		22,756		19,403
Advances and deposits		17,596		16,626		11,660
Other assets		335,428		344,813		294,727
Total non-current		1,097,526		1,094,077		1,187,570
Total		2,559,537		2,486,604		1,895,272

Includes mainly pension funds administered by the Fiduciaria Bancolombia Trust, received upon termination of the Asociación Cravo Norte contract with Occidental de Colombia and deposits to the Oil Savings and Stabilization Fund (from the Spanish Fondo de Ahorro y Estabilización Petrolera - FAEP) in Ecopetrol’s favor to address the remainder of the National Royalties Fund. Its sole purpose is the payment of debts and financing development programs and projects in hydrocarbon producing and non-producing municipalities and departments.

12. Investments in associates and joint ventures

The balance of Investments in associates and joint ventures is comprised as follows:

	March 31,		December 31,		January 1,
	2015		2014		2014
Investments in joint ventures
Equion Energía Limited		1,455,365		1,392,896		1,634,603
Investments in associates
Offshore International Group		1,030,809		1,017,435		879,621
Invercolsa S.A.		36,442		58,672		109,664
Ecodiesel Colombia S.A.		25,648		29,892		25,342
Serviport S.A.		8,445		8,445		8,445
Sociedad Portuaria Olefinas		649		649		649
		2,557,358		2,507,989		2.658.324
Minus – impairment of investments
Offshore International Group		114,735		114,735		-
Serviport S.A.		1,126		1,126		1,126
		115,861		115,861		1.126
Total		2,441,497		2,392,128		2,657,198

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

The details of the investments in associates and jointly controlled entities´s ownership, economic activity, domicile, country of operations and financial information is shown in Exhibit I.

The following shows a breakdown of the changes in the investments in associates:

	March 31			December 31
	2015			2014
Opening balance		2,392,128			2,657,198
Effects of equity method through profit or loss		744			167.999
Effects of equity method through equity		86,063			348.696
Dividends declared		(37,438	)		(667.030	)
Impairment		-			(114.735	)
Closing balance		2,441,497			2,392,128

Restrictions over investments in associates

As of May 15, 2015, regarding the legal proceedings of Invercolsa S.A.: The cessation extraordinary appeal put forth by AFIB S.A. and Fernando Londoño Hoyos against the order of the Superior Court of the Judicial District of Bogota – Civil Chamber, on January 11, 2011 and confirming the first order issued by the 28^th Civil Circuit Court on February 8, 2007 have been submitted to the civil chamber of the Supreme Court of Justice.

It is made clear that the judgment by the Superior Court of Bogotá at January 11, 2011: i) Declared the absolute nullity of the purchase of the 145 million shares of Invercolsa by Fernando Londoño Hoyos. ii) Declared that Ecopetrol and others were the owners and holders of the 145 million shares. iii) Ordered the recording in the shareholders’ book the cancellation of such purchase, including the pledge in favor of Pacífico Colombia y Panamá banks, as well as the payment in kind of the shares of Arrendadora Financiera Internacional Bolivariana S.A. iv) Ordered Fernando Londoño Hoyos and AFIB to return to Ecopetrol the dividends received from Invercolsa, along with the new shares received as profit and/or reappraisal. v) Declared that Fernando Londoño Hoyos had not acquired or was the holder in good faith of the 145 million shares of Invercolsa; therefore, he does not have any right of recourse against the plaintiffs for the amount he had paid for those shares. v) Ordered Invercolsa to adjust its operation and the Shareholders’ Meeting to the declarations made in the sentence. vii) Acquitted the defendants INVERCOLSA, Corredor and Alban. viii) Ordered Fernando Londoño to pay the court costs and Ecopetrol in respect of the acquitted defendants.

The balance of assets, liabilities and results of material associates and joint ventures is comprised as follows:

	Equion Energía Limited		March 31, 2015 Offshore International Group *		Equion Energía Limited		December 31, 2014 Offshore International Group		Equion Energía Limited		January 1, 2014 Offshore International Group
Statement of financial position
Current assets		1,184,109		319,711		1,052,893		350,969		1,900,976		386,259
Non-current assets		2,006,682		1,928,948		1,984,484		1,893,465		1,512,282		1,663,223
Total assets		3,190,791		2,248,659		3,037,377		2,244,434		3,413,259		2,049,482

Current liabilities		802,091		484,482		815,463		511,918		793,321		562,447
Non-current liabilities		252,939		385,456		217,461		380,543		151,488		410,689
Total liabilities		1,055,030		869,938		1,032,924		892,461		944,809		973,136
Equity		2,135,761		1,378,721		2,004,453		1,351,973		2,468,450		1,076,346

Other complementary information
Cash and cash equivalents		534,337		46,869		470,710		63,858		155,479		47,112
Financial obligations, short-term		682,575		329,603		690,741		334,944		737,610		307,329
Financial obligations, long-term		548		34,878		447		35,046		3,817		115,999

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

Statement of profit or loss	Equion Energía Limited			Three month period ended March 31, 2015 Offshore International Group			Equion Energía Limited			Three month period ended March 312014 Offshore International Group
Revenue		241,853			64,987			333,653			118,629
Costs		(187,525	)		(75,770	)		(130,633	)		(64,511	)
Administration and other expenses		(36,643	)		(23,022	)		(13,440	)		(15,188	)
Financial income (expenses)		19,121			(838	)		38,470			(992	)
Income tax		(16,324	)		2,308			(73,974	)		(16,785	)
Net income for the period		20,482			(32,335	)		154,075			21,153

The following shows a reconciliation of equity among the most significant participations and the book value of investments:

	March 31, 2015						December 31, 2014						January 1, 2014
	Equion Energía Limited			Offshore International Group *			Equion Energía Limited			Offshore International Group			Equion Energía Limited			Offshore International Group
Equity of the associate		2,135,761			1,378,721			2,004,453			1,351,973			2,468,450			1,076,346
Adjustment unrealized loss		(18,758	)					(9,938	)
Adjusted equity		2,117,003			1,378,721			1,994,515			1,351,973			2,468,450			1,076,346
% of Ecopetrol’s ownership		51	%		50	%		51	%		50	%		51	%		50	%
Ecopetrol’s ownership		1,079,672			689,361			1,017,203			675,987			1,258,910			538,173
Goodwill		375,693			341,448			375,693			341,448			375,693			341,448
Carrying amount of the investment		1,455,365			1,030,809			1,392,896			1,017,435			1,634,603			879,621

* Information for Offshore International Group at February, 2015

13. Property, plant and equipment

The following shows a breakdown of the changes in property, plant and equipment and its depreciation and impairment for the first quarter of 2015 and year ended December 31, 2014

	Property Plant and equipment			Pipelines, networks and lines			Work in progress (1)		Buildings			Lands (2)		Other			Total

Cost
Balance at December 31, 2014		15,964,763			19,385,762			23,993,566		5,185,398			4,211,299		3,208,517			71,949,305
Additions		225,372			319,450			1,374,583		131,532			20,224		17,985			2,089,146
Interest capitalized		-			-			198,714		-			-		-			198,714
Effect of exchange rate differences		-			-			32,257		-			-		-			32,257
Disposals		(6,663	)		(7,663	)		-		(82	)		-		(6,196	)		(20,604	)
Foreign currency translation		147,549			272,555			374,645		26,658			83,354		19,527			924,288
Reclassifications		235,191			(66	)		633,851		62			-		28,538			897,576
Balance at March 31, 2015		16,566,212			19,970,038			26,607,616		5,343,568			4,314,877		3,268,371			76,070,682

Accumulated depreciation and Impairment
Balance at December 31, 2014		(7,268,758	)		(5,597,583	)		-		(1,127,434	)		-		(416,892	)		(14,410,667	)
Depreciation expense		(251,031	)		(301,406	)		-		(82,861	)		-		(37,756	)		(673,054	)
Impairment losses recognized in profit or loss		(233	)		(12	)		-		(1	)		-		(5,713	)		(5,959	)
Eliminated on disposals of assets		5,124			7,397			-		21			-		3,509			16,051
Foreign currency translation		(103,692	)		(125,476	)		-		(8,429	)		-		(5,443	)		(243,040	)
Reclassifications		(131	)		13			-		(11	)		-		12			(117	)
Balance at March 31, 2015		(7,618,721	)		(6,017,067	)		-		(1,218,715	)		-		(462,283	)		(15,316,786	)
Net Balance at March 31, 2015		8,947,491			13,952,971			26,607,616		4,124,853			4,314,877		2,806,088			60,753,896

Ecopetrol S.A.

Notes to Consolidated Financial Statements

All amounts in millions of pesos unless otherwise stated

	Property Plant and equipment			Pipelines, networks and lines			Work in progress (1)			Buildings			Lands (2)			Other			Total

Cost
Balance at January 1, 2014		14,326,459			15,951,313			17,827,867			3,862,087			4,037,110			2,941,639			58,946,475
Additions		1,305,892			2,776,702			4,068,869			929,553			117,151			593,038			9,791,205
Interest capitalized		-			-			198,924			-			-			-			198,924
Effect of exchange rate differences		-			-			36,357			-			-			-			36,357
Disposals		(217,125	)		(29,725	)		(15,202	)		(18,425	)		(6,948	)		(265,746	)		(553,171	)
Foreign currency translation		578,526			220,846			652,576			83,106			214,884			54,685			1,804,623
Reclassifications		(28,989	)		466,626			1,224,175			329,077			(150,898	)		(115,099	)		1,724,892
Balance at December 31, 2014		15,964,763			19,385,762			23,993,566			5,185,398			4,211,299			3,208,517			71,949,305

Accumulated depreciation and Impairment
Balance at January 1, 2014		(6,216,426	)		(4,217,533	)		-			(840,590	)		-			(326,869	)		(11,601,418	)
Depreciation expense		(905,443	)		(1,088,778	)		-			(313,547	)		-			(158,352	)		(2,466,120	)
Impairment losses recognized in profit or loss		(44,206	)		(42,793	)		-			34,849			-			(21,278	)		(73,428	)
Eliminated on disposals of assets		157,615			18,665			-			2,755			-			73,613			252,648
Foreign currency translation		(263,802	)		(322,247	)		-			(21,972	)		-			(13,299	)		(621,320	)
Reclassifications		3,504			55,103			-			11,071			-			29,293			98,971
Balance at December 31, 2014		(7,268,758	)		(5,597,583	)		-			(1,127,434	)		-			(416,892	)		(14,410,667	)
Net Balance at December 31, 2014		8,696,005			13,788,179			-			4,057,964			-			2,791,625			57,538,638

Ecopetrol S.A.

Notes to consolidated financial statements

All amounts in millions of pesos unless otherwise stated

(1)

Mainly includes investments made for the modernization of the Cartagena Refinery in the amount of $18,653,730 (2014 - $16,598,809 and January 1, 2014 - $11,408,900).

(2)

The balance of land includes $930,045 (December 31, 2014 and January 1, 2014 -$939,045) for investment properties corresponding to land and lots kept for leasing. For the initial measurement of these assets, their fair value was used as deemed cost and its subsequent measurement is made by the cost method. Income generated relating to leases during the first quarter of 2015 amounted to $409 (first quarter of 2014 -$383).

During the evaluated period there were no changes caused by additions, disposals and/or impairment of these lands.

14. Natural and environmental resources

The following shows a breakdown of the changes in Natural and environmental resources and its depletion and impairment for the first quarter of 2015 and year ended December 31, 2014:

	Oil investments			Abandonment costs			Exploration and Evaluation			Total
Cost
Balance at December 31, 2014		37,459,879			1,965,202			6,114,020			45,539,101
Additions (1)		657,192			-			275,779			932,971
Capitalization of projects		-			-			(13,393	)		(13,393	)
Dry wells		-			-			(42,447	)		(42,447	)
Interest capitalized		-			-			31,208			31 ,208
Effect of exchange rate differences capitalized		-			-			46,804			46,804
Foreign currency translation		339,898			12,379			71,017			423,294
Reclassifications		(284,517	)					(10,678	)		(295,195	)
Balance at March 31, 2015		38,172,452			1,977,581			6,472,310			46,622,343

Accumulated depletion and Impairment
Balance at December 31, 2014		(19,517,736	)		(805,444	)		-			(20,323,180	)
Depletion expense		(796,457	)		(71,078	)		-			(867,535	)
Foreign currency translation		(130,846	)		(4,677	)		-			(135,523	)
Reclassifications		322,474			(26,344	)		-			296,130
Balance at March 31, 2015		(20,122,565	)		(907,543	)		-			(21,030,108	)
Net Balance at March 31, 2015		18,049,887			1,070,038			6,472,310			25,592,235

(1)

During 2015 first quarter, additions are represented mainly to the drilling plan in the following fields: Rubiales, Quifa, Castilla y La Cira Infantas, and the extension of the Acacías and Castilla 3 station.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

	Oil investments			Abandonment costs			Exploration and Evaluation			Total
Cost
Balance at January 1, 2014		31,277,931			1,227,664			5,575,489			38,081,084
Additions (1)		4,741,394			63,508			1,973,174			6,778,076
Additions in abandonment costs					645,679						645,679
Capitalization of projects		-			-			(120,505	)		(120,505	)
Dry wells (2)		-			-			(1,563,384	)		(1,563,384	)
Interests capitalized								92,633			92,633
Effect of exchange rate differences capitalized								16,931			16,931
Disposals		(11	)		-			-			(11	)
Foreign currency translation		878,789			28,351			165,594			1,072,734
Reclassifications		561,776			-			(25,912	)		535,864
Balance at December 31, 2014		37,459,879			1,965,202			6,114,020			45,539,101

Accumulated depletion and Impairment
Balance at January 1, 2014		(15,471,266	)		(648,052	)		-			(16,119,318	)
Depletion expense		(2,972,799	)		(135,082	)		-			(3,107,881	)
Impairment losses (3)		(478,180	)		-			-			(478,180	)
Eliminated on disposals of assets		11			-			-			11
Foreign currency translation		(323,148	)		(14,506	)					(337,654	)
Reclassifications		(272,354	)		(7,804	)		-			(280,158	)
Balance at December 31, 2014		(19,517,736	)		(805,444	)		-			(20,323,180	)
Net Balance at December 31, 2014		17,942,143			1,159,758			6,114,020			25,215,921

(1)

Additions are represented mainly in the following fields: Castilla, Casabe, Chichimene, Rubiales, Pauto, Caño Sur Este, Quifa, Cusiana, Nare y Akacías CPO-9.

(2)

Includes mainly dry wells in Ecopetrol S.A. of $527,670, Ecopetrol America Inc. by $462.060, Ecopetrol Brazil by $116,608, Ecopetrol Germany by $285,548 and Hocol S.A. by $171,467.

(3)

During 2014 an impairment was recognized for $474,552 related to oil and gas activities, resulting from the evaluation based on the estimated fair value of future cash flows of principal oil investments.

The depletion method used is the units-of-production method.

15. Intangibles

The following shows a breakdown of the changes in Intangibles and its amortization for the first quarter of 2015 and year ended December 31, 2014:

	Licenses and software			Other intangibles			Total
Cost
Balance at December 31, 2014		445,813			147,189			593,002
Additions		5,495			1,475			6,970
Disposals		(539	)		-			(539	)
Effect of exchange rate differences		2,213						2,213
Reclassifications		14,315						14,315
Balance at March 31, 2015		467,297			148,664			615,961
Accumulated amortization
Balance at December 31, 2014		(322,462	)		(45,213	)		(367,675	)
Depletion expense		(28.653	)		(2,449	)		(31,102	)
Disposals		-						-
Effect of exchange rate differences		(1,260	)					(1,260	)
Balance at March 31, 2015		(352,375	)		(47,662	)		(400,037	)
Net Balance at March 31, 2015		114,922			101,002			215,924
Useful lives		<5 years			<5 years

Ecopetrol S.A.

Notes to Consolidated Financial Statements

	Licenses and software			Other			Total
Cost
Balance at January 1, 2014		411,859			137,002			548,861
Additions		26,406			12,221			38,627
Disposals		(539	)		-			(539	)
Effect of exchange rate differences		5,204			-			5,204
Reclassifications		2,883			(2,034	)		849
Balance at December 31, 2014		445,813			147,189			593,002
Accumulated amortization
Balance at January 1, 2014		(262,583	)		(35,821	)		(298,404	)
Depletion expense		(58,884	)		(9,392	)		(68,276	)
Disposals		539			-			539
Reclassifications		1,156			-			1,156
Foreign currency translation		(2,690	)		-			(2,690	)
Balance at December 31, 2014		(322,462	)		(45,213	)		(367,675	)
Net Balance at December 31, 2014		123,351			101,976			225,327
Useful life		<5 years			<5 years

16. Goodwill

The balance of Goodwill through business combinations is comprised as follows:

	March 31			December 31			January 1st
	2015			2014			2014

Transport
CENIT Transporte y Logística de Hidrocarburos S.A.S.(1)		683,496			683,496			683,496
Exploration and production
Hocol Petroleum Limited		537,598			537,598			537,598
Refining and petrochemicals
Andean Chemical Limited		127,812			127,812			127,812
Propilco S,A,		108,137			108,137			108,137
		1,457,043			1,457,043			1,457,043
Minus – Impairment losses
Hocol Petroleum Limited (2)		(49,830	)		(49,830	)		(49,830	)

Total		1,407,213			1,407,213			1,407,213

(1)

CENIT’s Goodwill arose from the acquisition of Ocensa in 2009.

(2)

As of December 31, 2014 and January 1, 2014, the Business Group evaluated the recoverability of the carrying amount of goodwill by comparing it to the fair value of the CGU. The process implied projections of future cash flows after taxes, market variables and discount rates after taxes and risks associated with the segment of the evaluated company.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

Ecopetrol S.A. recognized an impairment loss as of January 1, 2014 of $49,830, related to the CGU of Hocol Premium Limited.

17. Loans and borrowings

17.1

Composition of loans and borrowings

	Weighted average effective interest rate at March 31, 2015			March 31 2015		December 31 2014		January 1st 2014
Local-currency
Bonds		8.97	%		1,931,255		1,931,140		1,927,467
Syndicated loans		7.94	%		4,437,248		4,446,529		4,597,181
Other		8.24	%		778,202		726,414		454,954
Total local-currency					7,146,705		7,104,083		6,979,602

Foreign-currency
Bonds		6.12	%		19,840,731		18,527,409		7,821,818
Commercial loan – Modernization plan at the Cartagena Refinery		2.00	%		8,146,325		7,480,719		5,831,549
Other commercial loans (1)		4.07	%		6,076,557		1,125,480		835,935
Other (2)		1.22	%		1,515,599		709,650		772,509
Total foreign-currency					35,579,212		27,843,258		15,261,811
Total financial obligations					42,725,917		34,947,341		22,241,413
Minus – short-term					4,611,531		3,456,441		3,121,335
Total long-term					38,114,386		31,490,900		19,120,078

(1)

In February 2015, Ecopetrol S.A. entered into a commercial loan of US$1,925 million. The following international banks participated in the facility: JP Morgan Chase Bank, N.A; BNP Paribas; Mizuho Bank Ltd; Bank of America, N.A.; HSBC Bank USA, National Association; Banco Bilbao Vizcaya Argentaria S.A., Grand Cayman Branch; Banco Santander S.A.; Citibank, N.A. The loan has a February 2020 maturity date and beans interest at a rate per annum of Libor + 140 basis points.

In May and September 2014, Ecopetrol S.A. issued bonds for an amount of US$2,000 and US$1,200 million, respectively. The first issuance has a May 2045 maturity date and a 5.875% coupon rate. The second issuance has a January 2015 maturity date and a 4.125% coupon rate.

In May, 2014, Oleoducto Central S.A. issued international bonds (RegS/144A) for the amount of US$500 million with a 4% coupon rate, maturing in May 2021.

(2)

Includes remittances financed in U.S. dollars with the national bank for the payment of imports that amounted to US$459 million (2014-US$196), with a financing rate of Libor and a spread between 0.5 and 0.8%.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

The following table details the main characteristics of the Group’s most significant loans:

Type

Company

Disbursement
date

Original amount
(millions)

Maturity

Interest
rate

Principal

payment

Dec/2010

COP $

97,100

Dec/2015

Floating

Bullet *

Dec/2010

COP $

138,700

Dec/2017

Floating

Bullet

Dec/2010

COP $

479,900

Dec/2020

Floating

Bullet

Bonds in local-currency

Ecopetrol S.A.

Dec/2010

COP $

284,300

Dec/2040

Floating

Bullet

Aug/2013

COP $

120,950

Aug./2018

Floating

Bullet

Aug/2013

COP $

168,600

Aug./2023

Floating

Bullet

Aug/2013

COP $

347,500

Aug./2028

Floating

Bullet

Aug/2013

COP $

262,950

Aug./2043

Floating

Bullet

Ecopetrol S.A.

May/2013

COP $

1,839,000

May/2025

Floating

Semi-annually

Syndicated loan in local-currency

ODL Finance S.A.

Aug/2013

COP $

647,029

Aug./2020

Floating

Quarterly

Oleoducto Bicentenario

July/2012

COP $

2,100,000

July/2024

Floating

Quarterly

July/2009

USD $

1,500

July/2019

Fixed

Bullet

Sep/2013

USD $

350

Sep/2018

Fixed

Bullet

Bonds in foreign-currency

Ecopetrol S.A.

Sep/2013

USD $

1,300

Sep/2023

Fixed

Bullet

Sep/2013

USD $

850

Sep/2043

Fixed

Bullet

May/2014

USD $

2,000

May/2045

Fixed

Bullet

Sep/2014

USD $

1,200

May/2025

Fixed

Bullet

Oleoducto Central S.A.

May/2014

USD $

500

May/2021

Fixed

Bullet

Dec/2011

USD $

2,747

Dec/2027

Fixed

Semi-annually

International commercial loans

Refinería de Cartagena S.A.

Dec/2011

USD $

310

Dec/2027

Floating

Semi-annually

Dec/2011

USD $

440

Dec/2025

Floating

Semi-annually

Ecopetrol S.A.

Feb/2015

USD $

1,925

Feb/2020

Floating

Bullet

Mar/2013

USD $

245

July/2023

Floating

Semi-annually

Mar/2013

USD $

151

July/2019

Floating

Semi-annually

* Bullet - Face value is paid in full on the maturity date.

17.2

Maturity of financial obligations

The following is the maturity of financial obligations as of March 31, 2015:

	Up to 1 year		1 – 5 years		5-10 years		> 10 years		Total
Local-currency
Bonds		250,618		669,066		647,160		364,411		1,931,255
Syndicated credit		498,110		2,337,586		1,550,497		51,055		4,437,248
Other		177,801		235,067		131,137		234,197		778,202
Total local-currency		926,529		3,241,719		2,328,794		649,663		7,146,705

Foreign-currency
Bonds		1,081,391		7,368,932		7,444,683		3,945,725		19,840,731
Syndicated credit		695,671		3,822,003		3,628,651		-		8,146,325
Commercial loans		561,282		5,329,483		185,792		-		6,076,557
Other		1,346,658		108,966		14		59,961		1,515,599
Total foreign-currency		3,685,002		16,629,384		11,259,140		4,005,686		35,579,212
Total Financial obligations		4,611,531		19,871,103		13,587,934		4,655,349		42,725,917

Ecopetrol S.A.

Notes to Consolidated Financial Statements

17.3

Guarantees

Financing obtained by Ecopetrol S.A. through capital markets, which correspond to issuance of local and foreign bonds, syndicated credit and others financial obligations are not guaranteed.

Reficar entered into an international commercial loan for $ 3,497 million to finance the expansion project of the refinery in Cartagena in 2011. This operation imposes restrictions on the Reficar´s debt ratio, except for certain conditions expressly set out in contracts about working capital needs. Regarding financial covenats, Reficar is required to maintain a coverage ratio of minimum debt service of 1.50: 1 at certain times of the loan’s life.

Under the same transaction, Reficar entered into a commercial trust and Security and Depositary Agreement to receive the resources of the new refinery to meet specific purposes such as operating expenses, interest and others.

For the case of the financing obtained by Oleoducto Bicentenario SAS for the construction of the project and start up of the pipeline, the creation of a main fund was established to manage the funds for the payment of the syndicated loan. (See Note 5).

17.4

Fair value of loans

The following shows the loan’s fair value:

		March 31, 2015				December 31, 2014				January 1, 2014
Fair value of the loans:			43,598,868				33,564,765				21,755,619

Business Group’s financial obligations are recognised at its amortized cost, which corresponds to the present value of cash flows, discounted at the effective interest rate.

For the measurement at fair value, bonds and securities in local currency were valued using Infovalmer reference prices for the local market, while for the bonds in US dollars the source taken was Bloomberg. Regarding the remaining financial obligations for which there is no market benchmark a present value discounting technique was used. These rates incorporate market risk through certain benchmarks (Libor, DTF) and the credit risk (spread) of the Company.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

18. Trade and other payables

The balance of trade and other payables is comprised as follows:

	March 31,		December 31,		January 1,
	2015		2014		2014
Current
Dividends payable		5,472,224		3,704		1,313,596
Suppliers		4,885,072		6,187,110		5,767,754
Partner advances (See note 30)		1,236,746		1,113,908		849,933
Deposits received from third parties		302.633		312,787		613,812
Related parties (see note 29)		92.909		107,820		127,093
Income and VAT tax withholdings		48,462		58,214		50,568
Various creditors		882,587		1,022,478		1,258,565
Total current		12,920,633		8,806,021		9,981,321
Non-current
Suppliers		26,862		30,432		33,457
Various creditors		113,811		95,999		455,781
Total non-current		140,673		126,431		489,238

Carrying amount of trade and other payables approximates its fair value due to their short term mature.

19. Labor and pension plan obligations

The balance of labor and pension plan obligations is comprised as follows:

	March 31,			December 31,			January 1,
	2015			2014			2014
Post-employment benefits
Health		4,841,071			4,787,784			5,127,275
Education		550,565			584,053			512,800
Pension		102,925			104,324			730,865
Pension bonds		(347,702	)		(252,994	)		13,183
Other		45,280			48,126			34,537
		5,192,139			5,271,293			6,418,660
Welfare benefits and salaries payable		237,318			308,804			266,420
Other post-employment benefits		71,350			73,986			66,544
Total		5,500,807			5,654,083			6,751,624

Current		1,308,514			1,380,000			1,337,616
Non-current		4,192,293			4,274,083			5,414,008

Ecopetrol S.A.

Notes to Consolidated Financial Statements

The following shows a breakdown of the changes in assets and liabilities of post-employment benefits:

	Pension and pension bonds (1)						Other						Total
	March 31,			December 31,			March 31,			December 31,			March 31,			December 31,
	2015			2014			2015			2014			2015			2014
Liabilities opening balance		11,559,018			12,193,924			5,419,963			5,674,612			16,978,981			17,868,536
Current service cost		-			-			15,771			64,020			15,771			64,020
Past service cost		-			-			-			(87,465	)		-			(87,465	)
Interest expense		198,436			821,783			96,903			386,675			295,339			1,208,458
Actuarial gains (losses)		-			(771,717	)		-			(233,590	)		-			(1,005,307	)
Other		-			-			(3,945	)		13,136			(3,945	)		13,136
Paid benefits		(153,506	)		(684,972	)		(91,776	)		(397,425	)		(245,282	)		(1,082,397	)
Liabilities-closing balance		11,603,948			11,559,018			5,436,916			5,419,963			17,040,864			16,978,981


Plan assets-opening balance		11,707,688			11,449,876			-			-			11,707,688			11,449,876
Return on plan assets		209,704			761,674			-			-			209,704			761,674
Benefits paid		(154,446	)		(685,082	)		-			-			(154,446	)		(685,082	)
Actuarial gains (losses)		85,779			181,220			-			-			85,779			181,220
Plan assets-closing balance		11,848,725			11,707,688			-			-			11,848,725			11,707,688
Net post-employment benefits liability (asset)		(244,777	)		(148,670	)		5,436,916			5,419,963			5,192,139			5,271,293

(1)

There is no service cost for pension and pension bound plans because the beneficiaries were all retired from July 31, 2010.

The following shows a breakdown of the changes in profit and loss and other comprehensive income for the quarters ended on March 31, 2015 and 2014:

	March 31,			March 31,
	2015			2014
Recognized in profit and loss
Service cost		15,771
Interest cost		295,339			302,115
Return on plan assets		(209,704	)		(192,076	)
		101,406			110,039

Recognized in other comprehensive income
Pension		80,101			58,033
Pension bonds		5,678			4,114
		85,779			62,147

Ecopetrol S.A.

Notes to Consolidated Financial Statements

Plan assets

The Company funded pension and pension bonds plans through five trust funds. The composition by type of investment is comprised as follows:

	March 31,		December 31,		January 1,
	2015		2014		2014
Bonds issued by the Colombian Government		4,500,764		4,298,278		4,311,575
Bonds of private entities		3,515,636		3,591,046		3,567,065
Other bonds of public entities		797,757		825,970		864,917
Bonds of foreign entities		270,546		230,772		196,404
Other local-currency		2,050,684		2,070,405		2,037,551
Other foreign-currency		480,865		480,712		389,416
Variable yield		232,473		210,505		82,948
		11,848,725		11,707,688		11,449,876

The fair value hierarchy of plan assets is comprised as follows:

	March 31		December 31		January 1st
Fair value	2015		2014		2015
Level 1		5,193,103		4,504,887		4,815,213
Level 2		6,655,622		7,202,801		6,634,663
		11,848,725		11,707,688		11,449,876

The fair value of the plan assets is calculated using prices quoted in the relevant assets’ market. The Company obtains these prices through reliable financial data suppliers recognized in Colombia or abroad, depending on the investment.

For the securities issued in local currency, the fair value of the plan assets is calculated using information published by INFOVALMER, supplier of prices authorized by the Financial Superintendence of Colombia. According to its methodology, prices may be calculated based on market information at the valuation date or estimated based on historic inputs in accordance with the criteria established for the calculation of each of the prices.

The fair value is calculated based on the most representative market of the transactions carried out through the electronic platforms approved and supervised by the regulator.

The estimated fair value is calculated for the investments that do not have sufficient information to estimate an average market price, by replicating the prices quoted for similar assets or prices obtained through quotations from stock brokers. This estimated price is also given by INFOVALMER as a result of the application of robust methodologies approved by the financial regulator and widely used by the financial sector.

Actuarial assumptions

The following are the actuarial assumptions used in determining the present value of defined employee benefit obligations at January 1, 2014 and December 31, 2014. Actuarial assumptions used at closing date of 2014 were used for the projections based at March 31, 2015.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

December 31, 2014

	Pension			Pension bonds			Health			Education			Other benefits
Discount rate		7.50	%		7.00	%		7.50	%		6.75	%		7.50	%
Salary growth rate		4.25	%		N/A			N/A			N/A			4.25	%
Expected inflation rate		3.00	%		3.00	%		3.00	%		3.00	%		3.00	%
Cost tendency (1)		N/A			N/A			10.40	%		7.50	%		N/A

January 1, 2014

	Pension			Pension bonds			Health			Education			Other benefits
Discount rate		7.00	%		6.25	%		7.00	%		6.50	%		6.75	%
Salary growth rate		4.50	%		N/A			N/A			N/A			4.50	%
Expected inflation rate		3.00	%		3.00	%		3.00	%		3.00	%		3.00	%
Cost tendency (1)		N/A			N/A			10.40	%		7.50	%		N/A

(1)

The cost tendency is the projected increase for the initial year and the rate blends into the expected inflation rate.

The mortality table used for all calculations was RV-08 “Valid Annuitants” for men and women 2005-2008, of the Colombian Social Security Institute – ISS.

Duration of benefit obligation

According to the latest actuarial valuations, weighted average duration (in years) of the liability for defined benefits, for each plan is comprised as follows:

	December 31		January 1st
	2014		2014
Pension		11.3		12.7
Health		13.3		14.9
Education		5.7		5.6
Pension bonds		10.7		12.1
Five-year term		7.0		7.5
Severance		7.0		11.3

Ecopetrol S.A.

Notes to Consolidated Financial Statements

Sensitivity analysis

Some relevant actuarial assumptions changes could occur at the presentation date of these financial statements. The sensitivity analysis below has been determined based on reasonably possible changes of the respective assumptions occurring at the end of the reporting period, while holding all other assumptions constant at December 31, 2014:

	Pension		Pension bonds		Health		Education		Other benefits
Discount rate
-50 basis points		11,580,791		651,975		5,117,292		703,682		31,571
+50 basis points		10,362,677		586,365		4,492,644		665,038		29,468

Inflation rate
-50 basis points		10,358,095		618,808		-		-		-
+50 basis points		11,581,821		617,188		-		-		-

Salary growth rate
-50 basis points		-		-		-		-		29,435
+50 basis points		-		-		-		-		31,597

Cost tendency
-50 basis points		-		-		4,496,688		666,565		-
+50 basis points		-		-		5,110,409		701,901		-

The Company performed a sensitivity analysis related to the interest rate variation on plan assets. See section 29 – Risk management for further information

20.

Estimated liabilities and provisions

The following shows a breakdown of the changes in the different categories of estimated liabilities and provisions for the quarter ended on March 31, 2015 and year ended December 31, 2014:

	Provision for abandonment (1)			Legal proceedings (2)			Provision comuneros (3)		Environmental contingencies and others (4)			Total
Balance at January 1, 2014		3,214,132			537,440			445,364		479,357			4,676,293
Additions (recoveries)		698,920			(210,144	)		106,133		228,681			823,590
Expenditures		(104,163	)		(27,238	)		-		(49,270	)		(180,671	)
Financial cost		194,769			-			-		-			194,769
Foreign currency translation		37,118			(507	)		-		16,181			52,792
Balance at December 31, 2014		4,040,776			299,551			551,497		674,949			5,566,773
Current		189,721			292,451			-		365,879			848,051
Non-current		3,851,055			7,100			551,497		309,070			4,718,722
		4,040,776			299,551			551,497		674,949			5,566,773

Ecopetrol S.A.

Notes to Consolidated Financial Statements

	Provision for abandonment (1)			Legal proceedings (2)			Provision comuneros (3)		Environmental contingencies and others (4)			Total

Additions (recoveries)		51,305			4,298			43,239		26,419			125,261
Expenditures		(11,073	)		(2,979	)		-		(5,691	)		(19,743	)
Financial cost		50,626			-			-		-			50,626
Foreign currency translation		15,116			113			-		5,470			20,699
Balance at March 31, 2015		4,146,750			300,983			594,736		701,147			5,743,616
Current		211,109			294,421					395,997			901,527
Non-current		3,935,641			6,562			594,736		305,150			4,842,089
		4,146,750			300,983			594,736		701,147			5,743,616

(1)

The increase of the provision for abandonment costs was generated mainly by drilling of wells for secondary recovery, exchange rate increase and decrease in the discount rate.

(2)

The following is a summary of the legal proceedings, for which allowances have been recognized in the consolidated financial statements due to a probable outflow of resources:

		March 31,		December 31,		January 1,
Type of action	Suit	2015		2014		2014

Class action suit	Contributions to the solidarity and electric-power-generation income redistribution fund, pursuant to Law 142 of 1994.		141,505		141,505		283,010

Class action suit	By extension of the Garcero Association Contract, in defense of the public heritage and free economic competition.		77,592		77,592		155,184

Proceeding for damages	Compensation for damages for hydrocarbon easement in property near the Refinería de Cartagena		11,019		11,019		-

Labor proceedings	Labor proceeding of 2007 for the reassessment of salaries and social benefits to 232 Ecopetrol contractors.		10,060		10,060		-

Labor proceedings	Proceeding to reassess social, legal and extralegal benefit payments and monthly pension payments made under the saving stimulus heading.		4,902		4,731		18,689

Ecopetrol S.A.

Notes to Consolidated Financial Statements

(3)

Included the interim relief ordered by the Council of State in its decree 1994 in the invalidity action brought by the Ministry of Mines and Energy against Comuneros (community members) of Santiago de las Atalayas and Pueblo Viejo de Cusiana, corresponding to the attachment and seizure of the payments to be made by Ecopetrol for royalties, based on Royalty contracts declared null and void by the Council of State in its ruling of 1999, in which it was ordered that said interim relief should be cancelled and that the attached and seized amounts should be handed over to the State – the Ministry of Mines. Ecopetrol has capacity as receiver. Of said amount, $90,752 corresponds to the value initially recognized by Ecopetrol, as well as the valuation of the fund containing the resources; $503,984 corresponds to net interest income generated. In a ruling on December 12, 2012, notified by edict on January 21, 2013, the Council of State declared that the special plea for reconsideration filed by the Comuneros was dismissed. In November 2014, a new application was filed whereby Ecopetrol reiterated its request that the amounts seized in these proceedings be handed over, as the Company has paid the Nation and the beneficiary territorial entities the amount of total royalties incurred during the enforcement of the interim relief, and subsequently, these resources belong to Ecopetrol. See Note 8.

(4)

Mainly includes a provision to cover the works of relocation of the intake of the Cucuta Aqueduct as a result of the rupture of the Caño Limon-Coveñas pipeline and environmental provisions for potential events that may impact the regions where the Company has presence.

20.1

Legal proceedings not recognized

The following is a summary of the proceedings, for which allowances have not been recognized, according to evaluations by the Company’s internal and external advisors:

		March 31,		December 31,		January 1,
Type of action	Suit	2015		2014		2014

Class action	Contributions to electric-power-generation pursuant to Law 142 of 1994.		219,944		219,944		219,944
Labor proceedings	Proceeding to reassess social, legal and extralegal benefit payments made under the saving stimulus heading.		16,561		16,561		16,561
Contractual administrative	Breach of contract, the plaintiff declaring the rupture of the economic equilibrium thereof.		-		112,637		-

Ecopetrol S.A.

Notes to Consolidated Financial Statements

20.2

Detail of contingent assets

Following is the detail of the major assets contingencies, which probability of occurrence is eventual:

		March 31,		December 31,		January 1,
Type of action	Claims	2015		2014		2014

Nullity and reinstatement of the right	Nullity of Resolution number 113 of 1971 from the Presidency of the Republic, in respect of the ownership of the subsoil to private parties known with the name of Santiago de Las Atalayas and Pueblo Viejo de Cusiana.		175,000		175,000		175,000
Indemnification for third party liability	Arbitration court formed to settle the differences between Offshore LLC against Ecopetrol and KNOC.		191,347		176,885		-
Civil ordinary general	Nonfulfillment of the contract for delivery of hydrotreating units.		142,715		142,715		142,715
Contractual administrative	Nonfulfillment of the pipeline purchase order		21,231		21,231		21,231
Nullity and reinstatement of the right	Nullity of the administrative act that established a special contribution for public works contracts		14,956		14,956		-
Nullity and reinstatement of the right	Nullity of the administrative act that established a special contribution for public works contracts		13,214		13,214		-

21.

Other financial liabilities

Other financial liabilities are comprised by Oleoducto Central S.A. and Hocol S.A. derivative financial instruments whose purpose is to hedge the risk in exchange rate changes to protect the cash flows required by these companies. Balance at March 31, 2015 in the statement of financial position is $225,428 (2014 - $140,055 and January 1, 2014 - $46), which corresponds to its fair value at Level 2 hierarchy, valued according to observable inputs, using the forward price methodology.

The impact in the profit and loss for the quarters ended on March 31, 2015 and 2014 is a loss of $94,453 and $303, respectively.

22.

Equity

The main components of equity are comprised as follows:

Ecopetrol S.A.

Notes to Consolidated Financial Statements

22.1

Subscribed and paid-in capital

Ecopetrol’s authorized capital amounts to $15,000,000, and is comprised of 60,000,000,000 ordinary shares at a par value of $250 pesos 41,116,698,456 of such shares have been subscribed represented by 11.51% of non-controlling interest and 88.49% held by Government entities. The value of the reserve shares amounts to $4,720,825 comprised by 18,883,301,544 shares. At March 31, 2015, subscribed and paid-in capital amounts to $10,279,175. There no potentially dilutive instruments.

On March 26, 2015, the General Stockholders’ Meeting approved the capitalization of occasional reserves of Ecopetrol S.A. for $14,760,892 through the mechanism of increase of face value. Upon completion of the relevant processes in the second quarter, the face value of the shares will be $609 pesos per share and the subscribed and paid capital will amount to $25,040,067. This capitalization of reserves did not modify the number of ordinary registered shares.

22.2

Additional paid-in capital

Mainly corresponds to: (i) surplus with respect to its nominal value derived from the sale of shares upon capitalization in 2007, in the amount of $4,457,997, (ii) $31,351, the value generated by the process of placing the shares on the secondary market, arising from the calling of guarantees from debtors in arrears, according to the stipulations of Article 397 of the Commercial Code, (iii) to the surplus over nominal value arising from the sale of shares awarded in the second round, which took place in September 2011, in the amount of $2,118,492, and (iv) Additional paid-in capital receivable $216.

22.3

Equity reserves

The balance of equity reserves is comprised as follows:

	March 31,		December 31,		January 1,
	2015		2014		2014
Legal		4,962,335		4,938,718		4,700,873
Occasional		15,152,392		12,938,995		9,956,268
Tax and mandatory		671,455		231,698		397,873
		20,786,182		18,109,411		15,055,014

Legal reserve

The Colombian Code of Commerce establishes the obligation of the appropiation of 10% of net income to our legal reserves until our legal reserves meet 50% of suscriped capital. The legal reserve can be used as compensation for losses or for distribution in the event of liquidation of the Company.

Occasional reserves

This corresponds to the appropriation of earnings ordered by the Stockholders’ meeting to carry out new explorations and future investments, as well as unrealized profits between group companies. On March 26, 2015, the Stockholders’ Meeting approved, after the appropriation of the occasional reserves of the 2014 period, the capitalization of occasional reserves for $14,760,895, through the mechanism of face value increase. This transaction will be formalized in the second quarter once the respective legal processes are performed.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

Tax and mandatory reserves

The Colombian tax regime contemplates the appropriation of the profits for the period equivalent to 70% when the value of the depreciation claimed for tax purposes exceeds the accounting depreciation. This reserve may be released to the extent that the depreciations subsequently accounted for exceed those claimed annually for tax purposes, or the assets that generated the higher value deducted are sold.

In addition, Decree 2336 of 1995 established the obligation to establish a reserve for valuation of investments. The profits that are generated at the closing of the accounting period as a consequence of the application of special valuation systems at market prices and that have not been made in the name of the Company will be taken to a reserve.

22.4

Retained earnings and payment of dividends

The following shows the balance and a breakdown of the changes in retained earnings:

	March 31			December 31
	2015			2014
Retained earnings		2,816,071			10,801,332
Balance at beginning of year		10,801,332			17,526,975
Income attributable to owners of Ecopetrol		160,030			7,019,096
Appropriation of reserves		(2,676,771	)		(3,054,397	)
Dividends declared		(5,468,520	)		(10,690,342	)
Balance at end of year		2,816,071			10,801,332

On the results of the 2014 year end, the General Stockholders Meeting approved the distribution of an ordinary dividend per share of $133 pesos that will be paid to the minority stockholders in June 2015 for $629,344 and to the majority stockholder in 4 installments payable in the months of October, November and December 2015 and March 2016, for a total value of $4,839,177.

In 2014 ordinary dividends of $227 pesos were paid per share and extraordinary for $33 per share, for a total dividend of $260 pesos per share, which were paid in their entirety as of December 31, 2014.

22.5

Other comprehensive income

Includes income and expenses derived from the defined benefits plan, valuation of non-current assets held for sale and foreign currency translation controlled companies’ financial statements with functional currency different to Ecopetrol S.A.’s

Ecopetrol S.A.

Notes to Consolidated Financial Statements

23.

Revenue

The following is the detail of revenue for the three month periods ended March 31:

	2015			2014
National sales
Mid-distillates		2,478,322			2,948,867
Gasoline		1,490,006			1,519,602
Services		1,109,809			811,221
Natural gas		414,567			318,649
Crude		151,622			455,603
Asphalts		119,148			119,646
L.P.G. and propane		61,581			129,074
Other products		436,896			531,302
		6,261,951			6,833,964
Recognition of price differential (1)		(435,183	)		436,461
		5,826,768			7,270,425
Foreign sales
Crude		5,274,050			8,194,402
Fuel oil		584,979			1,182,088
Natural gas		100,188			138,917
Propylene		3,216			16,645
Gasoline and turbo fuel		-			89,798
Diesel		-			179,738
Other products		511,654			899,311
		6,474,087			10,700,899
Total revenues		12,300,855			17,971,324

Corresponds to the application of Decree 1880 of September 2014 and Resolution 180522 of 2010, which defined the procedure for price differentials (value generated by the difference between parity price and regulated price, which can be positive or negative). See section 3.17 – Revenue recognition for more details.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

24.

Cost of sales

The following is the detail of cost of sales according to their function for three month periods ended March 31:

	2015		2014
Variable costs
Imported products (1)		2,764,883		3,302,991
Depreciation, depletion and amortization		1,179,081		1,223,792
Hydrocarbon purchases - ANH (2)		814,886		1,781,847
Purchases of crude in association and concession		602,215		793,150
Hydrocarbon transportation services		320,576		385,582
Purchases of other products and gas		244,341		379,009
Services contracted in associations		149,092		162,253
Gas royalties in cash (3)		122,371		84,685
Electric power		97,316		89,793
Processing materials		53,909		61,579
Adjustment of inventories to net realizable value		31,682		(5,594	)
Volume adjustments and other allocations		56,207		360,494
		6,436,559		8,619,581
Fixed costs
Maintenance		401,334		463,168
Services contracted in associations		376,922		393,251
Labor costs		376,134		340,272
Depreciation and amortization		362,324		325,076
Services contracted		282,609		303,772
Taxes and contributions		117,439		137,387
Materials and operating supplies		65,237		73,162
Hydrocarbon transportation services		24,232		936
Non-capitalized project costs		23,660		42,996
General costs		88,187		69,333
		2,118,078		2,149,353
		8,554,637		10,768,934

Corresponds mainly to purchases of ACPM and diluent agents to facilitate the transportation of heavy crude oil.

Corresponds mainly to the purchases of crude royalties that Ecopetrol makes from the ANH derived from national production, both by the Company in direct operation and by third parties.

Through Resolution 877 of September 2013, the National Hydrocarbons Agency established that, starting January 1, 2014, it will collect payment for royalties generated by gas production in cash and not in kind.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

25.

Administration, operation and project expenses

The following is the detail of administration, operation and project expenses, according to their function, for the three month periods ended on March 31:

	2015		2014
Administration expenses
Taxes (1)		611,960		18,793
Labor expenses		122,185		99,222
General expenses and other		59,784		56,869
Depreciation and amortization		25,101		23,840
		819,030		198,724
Operation and project expenses
Commissions, fees, freights and services		186,027		194,892
Taxes		101,847		89,564
Exploration expenses		84,533		363,573
Labor expenses		76,921		65,692
Maintenance		54,334		46,236
Audit fees		24,000		14,500
Depreciation and amortization		20,412		2,231
Various		56,879		20,307
		604,953		796,995

(1)

Includes mainly the recognition of wealth tax. See Note 9 – Current tax assets and liabilities for more details.

26.

Other operating income and expenses, net

The following is the detail of other operating income and expenses, according to their function, for three month periods ended on March 31:

	2015			2014
Deferred Build, Operate, Maintain and Transfer Contracts (BOMT) income		43,384			34,965
Compensation received		5,448			1,779
Earnings from the sale of materials and property, plant and equipment		4,186			4,139
Loss on fixed assets and natural resources disposals		(3,211	)		(151	)
Recovery of legal proceeding’s provisions		(15,737	)		(9,626	)
Recovery of other provisions, net		(10,066	)		(7,670	)
Gas pipeline availability under BOMTS contracts		(28,915	)		(24,727	)
Other income (expenses), net		40,524			59,286
		35,613			57,995

Ecopetrol S.A.

Notes to Consolidated Financial Statements

27.

Finance results, net

The following is the detail of finance results, net for three month periods ended on March 31:

	March 31,			March 31,
Finance Income	2015			2014
Financial income from financial assets		116,332			8,976
Yield and interest		73,690			109,990
Dividends		15,792			53,187
Gain on fair value of derivatives		-			55
		205,814			172,208
Finance costs
Interest (1)		(291,785	)		(142,019	)
Other liabilities financial costs		(134,320	)		(153,196	)
Loss on fair value of derivatives		(97,453	)		(358	)
Other finance expenses		(37,678	)		(20,541	)
		(561,236	)		(316,114	)
Foreign exchange (loss) gain, net		(1,174,852	)		22,994
Financial result, net		(1,530,274	)		(120,912	)

(1)

Interest was capitalized to natural resources and property plant and equipment for $229,922 and $195,434 for the three month periods ended March 31, 2015 and 2014 respectively.

28.

Risk management

28.1

Price risk

Our business depends substantially on international prices for crude oil and refined products. The prices for these products are volatile; a sharp decrease could adversely affect our business prospects and results of operations.

A large proportion of our revenues come from sales of crude oil, natural gas and refined products. These products are indexed to international reference prices such as Brent. Consequently, fluctuations in those international indexes have a direct effect on our financial condition and results of operations.

Prices of crude oil, natural gas and refined products have traditionally fluctuated as a result of a variety of factors including, among others, competition within the oil and natural gas industry; changes in international prices of natural gas and refined products; long-term changes in the demand for crude oil, natural gas and refined products; regulatory changes; changes in the cost of capital; adverse economic conditions; transactions in derivative financial instruments related to oil and gas and development or availability of alternative fuels.

The Ecopetrol business group has a policy approved by the Board of Directors that permits it to use derivative financial instruments in the organized market or over the counter (OTC) to cover itself from the risk of price fluctuations of crude oil and refined products associated to physical transactions. The Company has established appropriate process to handle risk that include constant monitoring of physical and financial market to identify risks in order to subsequently prepare and execute hedging strategies. As of this date there have been no hedging transactions performed to cover this type of risk.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

The following table provides information about the sensitivity of our Gross Income as of March 31, 2015, to variations of US$1 in the index price of our products and of 1% in the COP$/US$ exchange rate.

			Effect on our income before tax
	Results as of March 31, 2015		Variation +/- US$1 in index prices
Gross income		3,746,218		109,105

Results as of March 31
2015

Variation
+/- 1% COP$/US$ (2)

Gross income

3,746,218

101,693

28.2

Exchange rate risk

The group operates mainly in Colombia and makes sales in the local and international markets. We are exposed to the exchange rate risk that arises from various foreign currency exposures due to our commercial transactions and assets and liabilities held in foreign currency. The impact of fluctuations in exchange rates, especially the Peso/U.S. dollar rate, on our operations could be material.

The U.S. dollar/Peso exchange rate has fluctuated during the last several years. The Peso depreciated 7.1% in 2014. During the first quarter of 2015 the peso depreciated 7.7% going from a closing rate at December 31, 2014 of $2,392.46 to $2,576.05 peso per dollar. During the first quarter of 2014, the peso depreciated 2% going from a closing rate at January 1, 2014 of $1,926.83 to $1,965.32 at March 31, 2014 peso per dollar.

When the Peso appreciates against the U.S. dollar, our revenues from exports decrease when converted into Pesos. However, imported goods, oil services and interest on external debt denominated in U.S. dollars become less expensive for us. Conversely, when the Peso depreciates against the U.S. dollar, our revenues from exports, when converted into Pesos, increase, and our imports and external debt service become more expensive.

The following table shows the impact a variation of 1 and 5% in the exchange rate of Colombian peso Vs United States of America dollar would have on the assets and liabilities held in said currency at March 31, 2015:

Variation in the exchange rate			Effect in income before taxes (+/-)		Effect in other comprehensive income (+/-)
	1	%	$	213,261	$	38,426
	5	%	$	1,016,041	$	384,264

Sensitivity analysis includes only monetary assets and liabilities held in foreign at closing date. The sensitivity analysis for income and cost is shown in Section 29.1 – Price risk.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

28.3

Credit risk

Credit risk is the risk that the Company may suffer losses as a consequence of the nonfulfillment of the contracts for purchase and sale of crude oil, gas, refined and petrochemical products and transportation services, in addition to the financial institutions in which it keeps investments or the counterparties with which it has contracted derivative financial instruments.

In performance of the purchase and sale process of crude oil, gas, refined and petrochemical products and transportation services, the Company may be exposed to credit risk in the event that customers fail to comply with their payment obligations. The administration of this risk has designed mechanisms and procedures that have permitted the Company to minimize the probability of materialization, thus safeguarding the Company’s cash flow.

The Company makes a continuous analysis of the financial strength of its counterparties, which implies their classification according to their risk level and financial supports in the event of a cessation of payments. In addition, a constant monitoring is made of the national and international market conditions in order to establish early alerts of major changes that may have an impact on the timely payment of obligations from customers of the Company.

For the receivables portfolio that is considered deteriorated, an individual analysis is made that permits us to analyze individually the situation of each customer and thus define the applicable allowance to be established, such as age of receivables. The group carries out the administrative and legal actions necessary to recover past due accounts receivable, as well as the collection of interest from customers who do not comply with payment policies.

As of March 31, 2015, the business group does not have significant concentrations of credit risk. The following is the analysis of the receivables aged by customer in default but considered not impaired, as of March 31, 2015:

	March 31,
	2015
Less than 3 months overdue		143,105
Between 3 and 6 months overdue		15,968
More than 6 months overdue		1,728
Total		160,801

28.4

Interest rate risk

Interest rate risk arises from our exposure to changes in interest rates, as we have fixed and floating-rate instruments in our investment portfolio and issuances of floating rate debt linked to LIBOR, DTF and IPC rates. Thus, volatility in interest rates may affect the fair value and cash flows related to our investments and floating rate debt.

As of March 31, 2015, approximately 34% of our total indebtedness consisted of floating rate debt. If market interest rates rise, our financing expenses will increase, which could have an adverse effect on our results of operations and financial condition.

Ecopetrol S.A. controls the exposure to interest rate risk by establishing limits to its effective duration, Value at Risk and Tracking Error.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

The trust funds linked to Ecopetrol S.A.’s pension obligations (PAP) are also exposed to changes in interest rates, as they include fixed- and floating-rate instruments that are marked to market. Colombian regulation for pension funds, as stipulated in the Decree 941 of 2002 and Decree 1861 of 2012, indicates that they have to follow the same regime as the regular obligatory pension funds in their moderate portfolio.

The following table provides information about the sensitivity of our results and other comprehensive income, for the next 12 months, to variations in interest rate of 100 basis points:

Variation in interest rate	Financial liabilities (Financial expenses)			Financial assets (Financial income)			Trust funds (Other comprehensive income)
+ 100 basis points		(140,267	)		(20,582	)		(343,437	)
- 100 basis points		138,596			20,582			343,437

Sensitivity analysis of discount rates on pension plans is shown in its corresponding note of Labor and pension plan obligations.

28.5

Liquidity risk

Our ability to access the capital necessary to finance our investment plans on terms acceptable to us, can be limited due to deterioration in market conditions. A new financial crisis could worsen the risk perception in the emerging markets.

Risks related to Colombia’s political and regional environment could also make it more difficult for us and our subsidiaries to access international capital markets. These conditions, along with significant write-offs in the financial services sector and the re-pricing of credit risk, can make it difficult for us to obtain funding for our capital needs on favorable terms. As a result, we may be forced to revise the timing and scope of these projects as necessary to adapt to existing market and economic conditions, or access the financial markets on terms less favorable, therefore negatively affecting our results of operations and financial condition.

Liquidity risk is managed in accordance with our policies aimed at ensuring that there are sufficient net funds to meet the Company's financial commitments within its maturity schedules, with no additional costs. The main method for the measurement and monitoring of liquidity is cash flow forecasting.

The following is a summary of the maturity of financial liabilities as of March 31, 2015. The amounts disclosed in the table are the contractual undiscounted cash flows. Consequently, these amounts may not reconcile with the amounts disclosed on the Consolidated statement of financial position.

	Up to 1 year		1 - 5 years		5 - 10 years		> 10 years		Total
Loans (Principal and Interests)		4,794,164		24,255,239		18,730,630		18,822,602		66,602,635
Accounts payable		12,920,633		140,673		-		-		13,061,306
Other financial liabilities		225,428		-		-		-		225,428
Total		17,940,225		24,395,912		18,730,630		18,822,602		79,889,369

Ecopetrol S.A.

Notes to Consolidated Financial Statements

28.6

Capital management

The main objective of Ecopetrol’s Capital Management is to secure a financial structure that will optimize the Company’s cost of capital, that maximizes the returns to its shareholders and permits access to financial markets at a competitive cost to cover is financing needs.

The leverage index at the relevant periods is comprised as follow:

	March 31, 2015			December 31, 2014			January 1^st, 2014
Financial obligations (Note 18)		42,725,917			34,947,341			22,241,413
Cash and cash equivalents (Note 5)		(10,941,003	)		(7,015,731	)		(8,541,138	)
Other non-restricted financial assets (nota 8)		(2,619,062	)		(1,520,110	)		(1,939,745	)
Net financial debt		29,165,852			26,411,500			11,760,530
Equity (Note 22)		46,879,945			51,074,199			50,991,258
Leverage (1)		38.4	%		34.1	%		18.7	%

(1) Net financial debt / (Net financial debt + Equity)

29.

Related parties

The most representative balances as of March 31, 2015, December 31, and January 1, 2014, with related parties in which Ecopetrol holds investments where it exercises significant influence and joint ventures are included in accounts receivable, suppliers, accounts payable and loans, as follows:

	Accounts receivables		Other assets		Accounts payable		Loans
Joint ventures
Equion Energía Limited		107,618		52,141		73,469		92,149
Associates
Invercolsa S.A.		31,212		-		-		-
Ecodiesel Colombia S.A.		6,226		-		15,168		-
Serviport S.A.		-		-		4,272		-
Balance at March, 2015		145,056		52,141		92,909		92,149

	Accounts receivables		Other assets		Accounts payable		Loans
Joint ventures
Equion Energía Limited		75,561		9,338		84,006		36,728
Associates
Ecodiesel Colombia S.A.		-		-		20,308		-
Serviport S.A.		-		-		3,506		-
Balance at December, 2014		75,561		9,338		107,820		36,728

Ecopetrol S.A.

Notes to Consolidated Financial Statements

	Accounts receivables		Other assets		Accounts payable		Loans
Joint ventures
Equion Energía Limited		164,711		15,558		102,529		578,423
Associates
Ecodiesel Colombia S.A.		-		-		22,890		-
Serviport S.A.		-		-		1,674		-
Balance at January 1, 2014		164,711		15,558		127,093		578,423

Outstanding amounts are not guaranteed and will be settled in cash. No guarantees have been granted or received. No expense has been recognized in the current period or in previous periods in respect to uncollectable or doubtful accounts related to amounts due by related parties

The most significant transactions with related parties for the quarters ended on March 31, 2014 and 2015 are comprised as follows:

	Period ended March 31, 2015				Period ended March 31, 2014
	Sales and services		Purchase of products and services		Sales and services		Purchase of products and services
Joint ventures
Equion Energía Limited		147,485		122,503		126,031		44,984
Associates
Ecodiesel Colombia S.A.		315		53,286		304		47,323
Total transactions		147,799		175,790		126,334		92,307

Compensation of directors

Based on a resolution adopted at our annual shareholders’ meeting in 2012, compensation for directors is the equivalent of four to six minimum monthly wage salaries, which totals approximately $3,700 for 2014 and $3,900 for 2015. Fees for attendance at virtual meetings are set at 50% of the in-person meeting fee. The Board of directors is not subject to any variable remuneration.

The total compensation paid to our Directors, executive officers and senior management during 1^st quarter 2015 amounted to $5,092 (2014 - $9,058). Our Directors are not eligible to receive pension and retirement benefits from us. The total amount set aside to provide pension and retirement benefits to our eligible executive officers at December 31, 2014 totals $13,958.

Government related parties

Colombian Government holds control of Ecopetrol S.A. with a stock ownership of 88.49%. The most significant transactions with governmental entities are comprised as follows:

Ecopetrol S.A.

Notes to Consolidated Financial Statements

Purchase of oil from the National Hydrocarbons Agency - ANH

Because of the nature of the business, the company has a direct relationship with ANH, the entity that operates under the Ministry of Mines and Energy, which objective is to manage the oil and gas reserves and resources owned by the Nation.

Ecopetrol S.A. purchases the crude oil that the ANH receives from all producers in Colombia at the prices set in accordance with a jointly established formula, which reflects the export sale prices (crude oils and products), adjustment to the API gravity quality, sulfur content, transportation rates from the wellhead to the ports of Coveñas and Tumaco, refining process cost and a commercialization rate. This contract was extended to June 30, 2015.

Up to December 2013, the Company commercialized, on behalf of the ANH, the natural gas received by the latter in kind from the producers. Since January 2014 the ANH receives the royalties for production of natural gas in cash.

The purchase value of oil and gas from the AHN is detailed in Note 25-Cost of sales.

Price differential

Regular gasoline and diesel (ACPM) sale prices are regulated by the National Government. In this event, there are differentials between the volume reported by the Companies at the time of the sale and the difference between the parity price and the benchmark price, the parity price being that corresponding to the daily motor gasoline and diesel (ACPM) prices observed during the month. These differentials may be in favor or against the producers. The value of this differential is detailed in Note 24 – Revenue.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

30.

Joint Operations

The Company carries out exploration and production operations through Exploration and Production (E&P) Contracts, Technical Evaluation (TEA) Contracts and Agreements signed with the Agencia Nacional de Hidrocarburos (National Hydrocarbons Agency, hereinafter ANH), as well as through Partnership Contracts and other types of contracts in various forms. The main joint operations at the close of March 2015 one as follows:

Contracts in which Ecopetrol is not the operator:

Partners	Contract	Type	Geographic area of Operations	% Participation
Perenco Oil and Gas Colombia Limited	Boquerón	Production	Colombia	75%
Perenco Colombia Limited	Casanare	Production	Colombia	60%
Occidental de Colombia LLC	Cravo Norte	Production	Colombia	55%
Occidental de Colombia LLC	Rondón	Production	Colombia	50%
Chevron Petroleum Company	Guajira	Production	Colombia	57%
Chevron Petroleum Company	CE-M-715	Exploration-ANH	Brasil	50%
Mansarovar Energy Colombia Ltd.	Nare	Production	Colombia	50%
Equion energia Ltd	Piedemonte	Production	Colombia	50%
Meta Petroleum Corp.	Quifa	Production	Colombia	40%
Meta Petroleum Corp.	Rubiales (1)	Production – Shared-risk participation	Colombia	60%

(1)

In March, 2015, Ecopetrol and Pacific Rubiales Energy announce that they have agreed not to extend the Rubiales risk participation and Piriri joint venture contracts that expire in 2016. As a result, Ecopetrol will obtain a 100% interest in both fields as of June, 2016.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

Contracts in which Ecopetrol is the operator:

Partners	Contract	Type	Geographic area of Operations	% Participation
Talisman Colombia Oil & Gas Ltd	Niscota	Exploración	Colombia	20%
	CPO9	Exploración	Colombia	55%
	Mundo Nuevo	Exploración	Colombia	15%
Occidental Andina Llc	LA CIRA	Producción	Colombia	61,5%
Exxonmobil Exploration Colombia	VMM29	Exploración	Colombia	50%
Lewis Energy Colombia Inc	SSJN1	Exploración	Colombia	50%

31.

Segment information

31.1

Basis of classification

The Group operates under three segments: 1) Exploration and Production, 2) Transportation and Logistics and 3) Refining, petrochemicals and Biocombustibles

Exploration and Production - this segment includes the Company’s oil & gas exploration and production activities. Revenue is derived from the sale of crude oil, regulated fuels, nonregulated fuels and natural gas to inter-company segments, at market prices, and to third parties (local and foreign). Costs include those costs incurred in production. Expenses include all exploration costs that are not capitalized.

Transportation and Logistics - this segment includes the Company’s sales and costs associated with the transportation of crude oil, motor fuels, fuel oil and other refined products.

Refining and Petrochemicals - this segment includes the Company’s refining activities performed in Barrancabermeja and Cartagena refineries, where crude oil from locations is transformed into products. Revenue is derived from the sale of goods sold, both internally and to third parties (local and foreign), including refined products such as motor fuels, fuel oils and petrochemicals at market prices and some regulated fuels. This segment also includes sales of industrial services to third parties.

These functions have been defined as the operating segments of the Group since these are the segments (a) that engage in business activities from which revenues are earned and expenses are incurred; (b) whose operating results are regularly reviewed by the Group’s chief operating decision maker to allocate resources to the segments and assess their performance; and (c) for which discrete financial information is available. Internal transfers represent sales to intercompany segments and are recorded and presented at market prices.

31.2

Financial information by segments

The following segment information is reported based on the information used by the Board, as the highest body to make strategic and operational decisions of these business segments. The performance of the segments are based primarily on analysis of income, costs, expenses and results for the period generated by each segment , which are regularly monitored.

Ecopetrol S.A.

Notes to Consolidated Financial Statements

The information disclosed in each segment is presented net of transactions between Group companies.

The following presents the consolidated statement of profit and loss and other comprehensive income as of March, 2015 and 2014:

	Consolidated statement of profit and loss and other comprehensive income for the three month period ended 31 March 2015
	Exploration and production			Refining and petrochemicals			Transportation and logistics			Eliminations			Total
Third party sales		6,328,960			4,903,969			1,067,926			-			12,300,855
Inter-segment sales		1,226,132			203,304			1,423,714			(2,853,150	)		-
Total Revenue		7,555,092			5,107,273			2,491,640			(2,853,150	)		12,300,855

Fixed costs		1,623,328			467,996			637,253			(610,499	)		2,118,078
Variable costs		4,232,726			4,179,153			260,701			(2,236,021	)		6,436,559
Gross income		1,699,038			460,124			1,593,686			(6,630	)		3,746,218

Administration expenses		390,118			187,515			241,734			(337	)		819,030
Operation and projects expenses		360,030			274,857			35,080			(65,014	)		604,953
Other operating income and expenses, net		(18,821	)		(20,815	)		4,023			-			(35,613	)
Operating income		967,711			18,567			1,312,849			58,721			2,357,848

Financial income and expenses, net		(1,263,791	)		(347,175	)		142,169			(77,269	)		(1,546,066	)
Share of profit of associates		690			42			12			-			744
Investment income		60,695			(22,279	)		4,962			(27,586	)		15,792
Income before tax		(234,695	)		(350,845	)		1,459,992			(46,134	)		828,318
Income tax		69,135			50,532			(592,187	)		144			(472,376	)

Net income for the period		(165,560	)		(300,313	)		867,805			(45,990	)		355,942
Income attributable to:
Owners of the Company		(165,560	)		(298,359	)		669,939			(45,990	)		160,030
Non-controlling interests		-			(1,954	)		197,866			-			195,912
		(165,560	)		(300,313	)		867,805			(45,990	)		355,942
Complementary information
Depreciation, depletion and amortization		1,222,860			137,362			226,696			-			1,586,918

Ecopetrol S.A.

Notes to Consolidated Financial Statements

	Consolidated statement of profit and loss and other comprehensive income for the three month period ended 31 March 2014

	Exploration and production			Refining and petrochemicals			Transportation and logistics			Eliminations			Total
Third party sales		9,816,893			7,384,970			769,461			-			17,971,324
Inter-segment sales		1,997,783			216,433			1,160,349			(3,374,565	)		-
Total Revenue		11,814,676			7,601,403			1,929,810			(3,374,565	)		17,971,324

Fixed costs		1,540,816			446,961			642,013			(480,437	)		2,149,353
Variable costs		4,696,352			6,645,096			108,201			(2,830,068	)		8,619,581
Gross income		5,577,508			509,346			1,179,596			(64,060	)		7,202,390
														-
Administration expenses		35,355			77,204			86,165			-			198,724
Operation and projects expenses		661,047			179,796			7,660			(51,508	)		796,995
Other operating income and expenses, net		(25,264	)		(12,248	)		(20,523	)		40			(57,995	)
Operating income		4,906,370			264,594			1,106,294			(12,592	)		6,264,666

Financial income and expenses, net		(93,159	)		(54,972	)		(12,645	)		(13,323	)		(174,099	)
Share of profit of associates		11,838			3,375			101			-			15,314
Investment income		53,999			6,853			3,810			(11,475	)		53,187
Income before tax		4,879,048			219,850			1,097,560			(37,390	)		6,159,068
Income tax		1,664,503			103,014			326,712			-			2,094,229
Net income for the period		3,214,545			116,836			770,848			(37,390	)		4,064,839

Income attributable to:
Owners of the Company		3,214,545			118,516			592,430			(37,390	)		3,888,101
Non-controlling interests		-			(1,680	)		178,418			-			176,738
		3,214,545			116,836			770,848			(37,390	)		4,064,839
Complementary information
Depreciation, depletion and amortization		1,244,894			137,607			192,438			-			1,574,939

31.3

Sales of products by segment, geographic areas, customers and investments

Sales of products by segment March 31, 2015 and 2014:

	Sales of products by segment
	for the three month period ended 31 March 2015

	Exploration and production		Refining and petrochemicals		Transportation and logistics		Eliminations			Total
Local sales
Medium distillates		387		2,477,935		-		-			2,478,322
Gasolines		-		1,054,823		-		-			1,054,823
Natural gas		486,468		-		81		(71,982	)		414,567
Crude oil		1,277,662		-		-		(1,126,040	)		151,622
Diesel and asphalts		12,686		106,462		-		-			119,148
Plastic and rubber		0		169,327		-		-			169,327
L.P.G. and propane		27,193		34,388		-		-			61,581
Services and other products		107,239		373,974		2,491,419		(1,595,254	)		1,377,378
Total local sales		1,911,635		4,216,909		2,491,500		(2,793,276	)		5,826,768

Foreign sales
Crude oil		5,274,050		-		-					5,274,050
Fuel oil		-		584,979		-		-			584,979
Plastic and rubber		-		258,647		-		-			258,647
Natural gas		101,690		-		-		(1,502	)		100,188
L.P.G. and propane		2,089		7,432		-		-			9,521
Other products and services		265,628		39,306		140		(58,372	)		246,702
Total foreign sales		5,643,457		890,364		140		(59,874	)		6,474,087
Total sales by segment		7,555,092		5,107,273		2,491,640		(2,853,150	)		12,300,855

Ecopetrol S.A.

Notes to Consolidated Financial Statements

Sales of products by segment for the three month period ended 31 March 2014
	Exploration and production		Refining and petrochemicals		Transportation and logistics		Eliminations			Total
Local sales
Medium distillates		-		2,964,368		-		(15,501	)		2,948,867
Gasolines		-		1,956,063		-		-			1,956,063
Crude oil		1,711,608		-		-		(1,256,005	)		455,603
Natural gas		379,327		-		6		(60,684	)		318,649
Plastic and rubber		-		151,652		-		-			151,652
L.P.G. and propane		53,411		75,663		-		-			129,074
Diesel and asphalts		10,185		109,461		-		-			119,646
Other products and services		192,817		405,895		1,929,499		(1,337,340	)		1,190,871
Total local sales		2,347,348		5,663,102		1,929,505		(2,669,530	)		7,270,425

Foreign sales
Crude oil		8,887,532		-		-		(693,130	)		8,194,402
Fuel oil		-		1,182,088		-		-			1,182,088
Plastic and rubber		-		236,859		-		-			236,859
Diesel		-		179,738		-		-			179,738
Natural gas		146,424		-		-		(7,507	)		138,917
Gasolines		-		89,798		-		-			89,798
L.P.G. and propane		747		8,453		-		-			9,200
Other products and services		432,625		241,365		305		(4,398	)		669,897
Total foreign sales		9,467,328		1,938,301		305		(705,035	)		10,700,899
Total sales by segment		11,814,676		7,601,403		1,929,810		(3,374,565	)		17,971,324

Sales by geographic zones

Operating revenue by geographic zones is comprised as follows:

Zone	March 31, 2015		Participation			March 31, 2014		Participation
Colombia		5,666,303		46.1	%		6,949,781		38.7	%
United States of America		2,969,623		24.1	%		4,636,818		25.8	%
Asia		1,311,677		10.7	%		3,751,915		20.9	%
Europe		1,276,801		10.4	%		1,165,516		6.5	%
Central America and Caribbean		857,330		7.0	%		1,102,719		6.1	%
South America		200,410		1.6	%		354,477		2.0	%
Other		18,711		0.2	%		10,098		0.1	%
Total		12,300,855		100	%		17,971,324		100	%

Concentration of customers

In 2015 one customer of the refining segment accounted for 10% (2014 – 11,1%) of total sales. No other customers accounted for more than 10% of total sales. There was no exposure that affects the financial position of Ecopetrol if the company lost the client.

Non-current assets-distribution by geographic zone

The majority of the Company’s assets and activities are located in Colombia. The financial position and results of operations of those subsidiaries located outside of Colombia are not material to the Group.

Capital expenditures

The following table shows a breakdown of the changes of capital expenditures during the first quarter 2015 and year ended December 31, 2014:

Ecopetrol S.A.

Notes to Consolidated Financial Statements

	Capital expenditures in first quarter 2015
	Exploration and production		Refining and petrochemicals		Transportation and logistics		Total
Property, plant and equipment		813,043		767,029		509,074		2,089,146
Natural resources		932,971		-		-		932,971
Intangibles		5,475		167		1,328		6,970
Total		1,751,489		767,196		510,402		3,029,087

	Capital expenditures for the year ended December 31, 2014
	Exploration and production		Refining and petrochemicals		Transportation and logistics		Total
Property, plant and equipment		669,254		3,878,758		2,406,216		6,954,228
Natural resources		9,615,053		-		-		9,615,053
Intangibles		27,564		10,103		960		38,627
Total		10,311,871		3,888,861		2,407,176		16,607,908

Ecopetrol Business Group

Notes to the consolidated financial statements

All amounts in millions of pesos unless otherwise stated

Exhibit 1. Consolidated companies, associates and joint ventures

Consolidated subsidiaries

Company	Ownership			Activity	Subsidiaries	Country/Domicile	Geographic area of operations	Net Equity		Income (loss) for the period
Ecopetrol Global Energy		100	%	Investment vehicle.	Ecopetrol América Inc., Ecopetrol oleo & Gas do Brasil Ltda, Ecopetrol del Perú S. A., Ecopetrol Germany Gmbh, Refinería de Cartagena S. A., Bioenergy S. A.	Spain	Spain		3,517,411		(33	)
Ecopetrol Oleo é Gas do Brasil Ltda.		100	%	Hydrocarbon exploration and exploitation.	Sociedad portuaria de oleofinas y derivados, Propileno del Caribe S. A	Brazil	Brazil		16,612		(6,909	)
Ecopetrol del Perú S. A.		100	%	Hydrocarbon exploration and exploitation.	-	Peru	Peru		67,309		(2,253	)
Ecopetrol América Inc.		100	%	Hydrocarbon exploration and exploitation.	Ecopetrol Perú S.A, Ecopetrol Oleo é Gas do Brasil Ltda.,Propileno del Caribe S. A,Sociedad portuaria de oleofinas y derivados	United States of America	United States of America		2,855,297		(67,625	)
Black Gold Re Ltd.		100	%	Reinsurer of Ecopetrol and its subsidiaries.	-	Bermuda	Bermuda		446,725		9,586
Ecopetrol Germany Gmbh		100	%	Hydrocarbon exploration and exploitation.	-	Germany	Angola		2,686		101
Hocol Petroleum Limited		100	%	Investment vehicle.	Hocol S. A.	Bermuda	Bermuda		3,585,265		18,435
Hocol S.A		100	%	Hydrocarbon exploration, exploitation and production.	Oleoducto Central S.A.-ODC	Cayman Islands	Colombia		2,039,010		(16,157	)
Andean Chemicals Ltd.		100	%	Investment vehicle.	Bioenergy S. A., Refinería de Cartagena, Propileno del Caribe S. A. y Comai S.A.	Bermuda	Bermuda		4,685,000		15,822

Ecopetrol Business Group

Notes to the Consolidated Financial Statements

Refinería de Cartagena S. A.	100	%	Hydrocarbons refining, marketing and distribution.	-	Colombia	Colombia	8,099,205	(157,606	)
Propileno del Caribe Propilco S. A.	100	%	Production and marketing of polypropylene resin.	Comai S. A., Refinería de Cartagena., Bioenergy S. A. Sociedad Porturaria Olefinas y Derivados	Colombia	Colombia	1,001,507	24,172
COMAI - Compounding and Masterbatching Industry	100	%	Manufacturing of polypropylene compounds and master batches for a wide range of uses.	Refinería de Cartagena., Bioenergy S. A., Zona franca de Cartagena S.A , Sociedad Portuaria del Dique	Colombia	Colombia	76,481	14,423
Bioenergy S. A.	93,47	%	Biofuels production.	Bioenergy Zona Franca S. A., Amandine Holdings Corp. y Los Arces Group Corp.	Colombia	Colombia	258,228	(14,467	)
Bioenergy Zona Franca S. A. S.	93,47	%	Biofuels production.	-	Colombia	Colombia	112,100	(15,480	)
Amandine Holdings Corp.	93,47	%	In a winding-up process.	-	Panama	Panama	6,657	-
Los Arces Group Corp.	93,47	%	In a winding-up process.	-	Panama	Panama	5,100	-
Cenit S.A.S.	100	%	Almacenamiento y Transporte por ductos de Hidrocarburos.	Oleoducto Bicentenario, Ocensa, ODC, ODL, Serviport	Colombia	Colombia	15,091,710	694,823
Oleoducto Central S. A. - Ocensa	72,65	%	Pipeline transportation of crude oil.	-	Colombia	Colombia	2,248,321	465,967
ODL S. A.	65	%	Pipeline transportation of crude oil.	-	Panama	Panama	1,044,815	69,994
Oleoducto de Colombia S. A. – ODC	73	%	Pipeline transportation of crude oil.	-	Colombia	Colombia	305,339	56,028
Oleoducto Bicentenario de Colombia SAS	55.97	%	Pipeline transportation of crude oil.	-	Colombia	Colombia	826,845	60,472
Ecopetrol Capital AG	100	%	Financing, liquidation of funding for companies, groups or any business or related activity.	-	Switzerland	Switzerland	732,030	20,164
Ecopetrol Global Capital SL	100	%	Investment vehicle.	-	Spain	Spain	8	-

Ecopetrol Business Group

Notes to the Consolidated Financial Statements

Associates and joint ventures

Company	Ownership			Activity	Country/Domicile	Geographic area of operations	Net Equity		Income (loss) for the period
Associates
Invercolsa S.A.		43,35	%	Investment in companies of transport and distribution of Natural Gas and L.P.G. in Colombia.	Colombia	Colombia		129,265		4,159
Offshore International Group		50	%	Hydrocarbon exploration, development, production and processing.	United States of America	Peru		1,378,721		(32,335	)
Ecodiesel Colombia S.A.		50	%	Production, marketing and distribution of biofuels and oleo chemicals.	Colombia	Colombia		63,748		3,963
Serviport S.A.		49	%	Services for oil-vessel loading and unloading support; supply of equipment for the same purpose; technical inspections and loading measurements.	Colombia	Colombia		12,704		8,083
Sociedad Portuaria Olefinas y Derivados S.A.		50	%	Construction, use, maintenance, adequation and administration of ports and private or public docks facilities.	Colombia	Colombia		1,050		(202	)

Joint Ventures
Equion Energía Limited		51	%	Hydrocarbon exploration, exploitation and production	United Kingdom	Colombia		2,135,761		20,482

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