The Reserve Bank of India (RBI), in consultation with the government, has decided to increase the maximum limit for investment in Inflation Indexed National Saving Securities-Cumulative (IINSS-C) to Rs 10 lakh per annum from Rs 5 lakh earlier for eligible individual investors and Rs 25 lakh per annum from Rs 5 lakh per annum earlier for institutions such as Hindu undivided families, charitable trusts, education endowments and similar institutions which are not pro-profit in nature.
The subscription will close on March 31, RBI said.
The RBI in consultation with government had launched the bond in December. Earlier, the bond was open for subscription during December 23-31, but was later extended to March 31.
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Interest rate on the bonds are linked to Consumer Price Index (CPI).
These securities will be issued in the form of Bonds Ledger Account (BLA).

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