PPF (Public Provident Fund): Know all about PPF account, How to open, closing, transfer. Get information about PPF interest rate, maturity amount and investment details on Economic Times. Learn about the PPF, a voluntary savings-tax-reduction social security instrument in India, offered by the Central Government. Find out the eligibility, investment, returns, duration, tax benefits and withdrawal options of the PPF scheme. Important Update Our website domain has changed to https://centralbank.bank.in PPF account refers to Public Provident fund account and is meant to invest your valuable capital. If you are a new employee or a responsible parent who wishes to save for the future, then PPF is ideal for you. Calculating the interest rates and returns on your PPF account turns a bit difficult.