The Public Provident Fund (PPF) account is a 15-year investment product in which the investor makes contributions each year according to the specified limits. The account matures after 15 years from the end of the year in which the initial subscription was made.
On maturity, the investors have the option of extending the account for blocks of five years each. The extended account will continue to earn interest at the rate notified each year. The flexibility to withdraw funds from the account after it is extended is much more than in the initial subscription period.