The Securities and Exchange Board of India (SEBI) slightly shortened the time period by which foreign investors must use up their government debt limits to ensure that all of the unused quotas are put on sale at each monthly auction.
India's record current account deficit has been a key reason behind why Standard & Poor's and Fitch Ratings cut their outlooks on the country's sovereign rating to 'negative' last year.
It hopes to attract billions of dollars in investment by this move, and may ease some restrictions on foreign inflows.