India's roughly $150 billion outsourcing sector generates about three quarters of its revenue from the United States.
Critics say the programme, launched 10 months ago in India in collaboration with operator Reliance Communications, violates principles of net neutrality
Poor disclosure among India-listed firms is a turnoff for foreign investors.
India's central bank kept its key repo lending rate unchanged at 6.75 percent on Tuesday.
Indian companies struggle to escape debt burden as profit slows.
IndiGo was set up in 2006 by businessman Rahul Bhatia and Rakesh Gangwal, a former CEO for US Airways Group.
Indian companies have raised $1 billion so far this year - almost four times what they raised last year.
A Reuters poll showed only one out of 51 economists had expected a 50 basis points rate cut.
RBI Governor Raghuram Rajan is expected to express that cautiousness as he looks to manage expectations.
India's tax officials, long the scourge of foreign investors, are under government pressure to avoid aggressive claims against overseas funds.
The rupee has fallen more than 2 per cent against the dollar since the yuan devaluation
India's mutual funds are seeing a surge in stock investments from the hinterland as growing ranks of provincial retail investors help drive a two-year long rally.
An estimated $344 billion has been illegally removed from the Indian economy between 2002 and 2011
The RBI's next policy review is set for Sept. 29.
Companies are still struggling to recover from years of exuberance.
India imposes restrictions on how much money its citizens and companies can invest abroad
Rbi cut rates for teh third time to ease economic situation.
RBI will cut rates in its next policy announcement on June 2.
Analysts expect the Reserve bank to cut rates in next monetary policy.
Investor lobbies and tax lawyers estimate the bill for international funds and banks could be as high as $8 billion