In this article, I will explain the nitty gritty of PPF which may be quite handy for those who wants to enjoy safety, profitability and tax saving elements in their investments. PPF (Public Provident Fund ) works wonder when used as an investment tool for a longer maturity period, especially as a part of retirement planning. The account is packed with number of features like income tax rebate and exemption, loan and withdrawal facility and convenient operating of account.