By Raymond Zhong and Anant Vijay Kala 

NEW DELHI--India's new government chose incremental change over a major revamp for the country's ailing economy, saying Thursday it plans to simplify the tax system, make subsidy programs more efficient and raise the limit on foreign investment in two industries.

Presenting the national budget to Parliament, Finance Minister Arun Jaitley said the cap on foreign holdings in Indian defense and insurance companies would rise to 49% from 26%. But he gave mixed signals on retroactive taxation that has hit major foreign firms with huge liabilities. and contributed to the country's image as a sometimes-hostile place to do business.

Outlining the budget's 18 trillion rupees, or $300 billion, in total spending, Mr. Jaitley ticked off plans big and small--from spurring infrastructure investment and updating financial regulations to funding a 60-story statue of Indian founding father Vallabhbhai Patel and protecting women on mass transit.

He said the budget and policies being rolled out by the new administration were "only the beginning of a journey" toward reviving economic growth, reducing poverty and expanding the middle class. "India unhesitatingly desires to grow," he said.

He said it would be a few years before growth in economic output hit 7% to 8%--a level last seen four years ago. In the year ended March 31, Indian gross domestic product increased 4.7%.

The budget was widely seen as an important statement of intent by the government of Prime Minister Narendra Modi's Bharatiya Janata Party, which came to power this year after pledging to shake up the government and deliver the economic development sought by frustrated Indian voters.

The budget's measured approach appeared to be a harbinger of tailored efforts--rather than policy overhauls--to improve government efficiency and make the economy more open.

"It was really a grab bag of different policies with something in there for everybody," said Frederic Neumann, joint head of Asian economic research for bank HSBC. "All in all, an encouraging budget, but not really something that is a complete game-changer."

Investor reaction was mixed. The Bombay Stock Exchange's benchmark index saw large swings as Mr. Jaitley spoke on Thursday morning, falling by as much as 1.3% in intraday trading before rebounding by the speech's end. The index ended the day down 0.3%.

Despite planned new spending, Mr. Jaitley said the government would aim to keep the budget deficit to 4.1% of GDP for the year ending March 31, a target set by the previous, left-leaning government led by the Congress party. He said achieving the number would be "daunting." He also pledged to shrink the deficit to 3.6% of GDP in the next fiscal year.

Some political analysts had hoped that Mr. Jaitley, an erudite former Supreme Court lawyer, would use his inaugural budget address to redefine the government's approach to economic management. But his speech, which lasted more than two hours and 15 minutes, at times read like a laundry list of spending and revenue measures rather than a statement of a new vision for India.

In general, the first budget of the Modi administration stuck to the middle road. Mr. Jaitley, who inveighed on the campaign trail against the "tax terrorism" of his predecessors, didn't suggest a repeal of a retroactive tax law used against Vodafone Group PLC and Nokia Corp., which has drawn fire from foreign investors.

Instead, he said the Modi government would limit retroactive tax demands on businesses. Any new cases arising from the previous government's tax changes would be reviewed by a committee. "The sovereign right of the government to undertake retrospective legislation is unquestionable," he said, but added the Modi government wouldn't "ordinarily" pass such laws.

The U.S.-India Business Council, an advocacy group, said that "any retroactive taxation is harmful to India's business climate." Firms are "eager for further positive clarifications on this matter," the council said. Vodafone said Thursday it doesn't expect relief from the Indian government and will continue with ongoing arbitration.

To simplify the welter of state and federal sales taxes imposed on domestic and foreign businesses, Mr. Jaitley said he would push for passage of a uniform, countrywide goods-and-services tax. Such a levy, economists say, is essential for improving tax collection and making it easier for firms to do business across state lines.

Mr. Jaitley said he hoped to complete negotiations on the tax, which many state governments don't support, by the end of this year.

The finance minister emphasized that programs to alleviate poverty would remain a focus of the Modi administration. Funding for a rural-employment program, a flagship policy of the previous government, would be maintained, but he said it would be aimed at building lasting public works. India's extensive subsidy programs for the poor would be "more targeted," he said, without offering details. Analysts had been hoping for concrete plans to trim subsidies, which total 2.5 trillion rupees, or 14% of all expenditure, in the new budget.

Mr. Jaitley stressed Mr. Modi's ambition to close the gap between urban and rural areas, saying the government would focus on putting toilets in elementary schools and expanding rural electrification.

"This doesn't look very different" from the previous government's budgets, said Madan Sabnavis, chief economist at CARE Ratings, a Mumbai-based credit-ratings firm. "The names of the schemes have changed, that's all."

Prasanta Sahu, Rajesh Roy and Niharika Mandhana contributed to this article.

Write to Anant Vijay Kala at anant.kala@wsj.com

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