A PPF Calculator (Public Provident Fund Calculator) is an online tool used to estimate the maturity amount of your PPF account based on regular yearly investments, the current interest rate, and the investment tenure. The PPF scheme is a long-term investment option backed by the Indian government, providing guaranteed returns and tax benefits.

1. Annual Investment: The amount you invest each year in your PPF account (maximum ₹1.5 lakh per year).

2. Tenure: The PPF account has a lock-in period of 15 years, but you can extend it in blocks of 5 years.

3. Interest Rate: The current interest rate offered by PPF is set by the government and is typically updated every quarter.

The PPF Calculator helps users plan their investments, showing the potential returns at the end of the maturity period.

A PPF calculator works on the following formula –

**F = P [({(1+i) ^n}-1)/i]**

In the above formula –

I | Rate of interest |

F | Maturity of PPF |

N | Total number of years |

P | Annual instalments |