About the PPF Calculator

The PPF (Public Provident Fund) Calculator computes the maturity amount, total interest earned, and year-by-year balance for your PPF account using annual compounding at the current government-declared rate (7.1% p.a.). PPF is one of India's most popular long-term savings instruments, offering completely tax-free returns under the EEE (Exempt-Exempt-Exempt) status. This calculator is ideal for salaried individuals, self-employed professionals, and parents planning a 15+ year tax-free savings corpus.

How to Use

  1. Enter your Annual Investment amount (₹500 minimum, ₹1,50,000 maximum per year).
  2. Set the PPF Interest Rate — currently 7.1% p.a., reviewed quarterly by the government.
  3. Set the Tenure in years (minimum 15 years; extendable in 5-year blocks after maturity).
  4. Click Calculate to see your maturity value, total interest, and a year-by-year breakdown.

Formula / Methodology

Balance(y) = [Balance(y−1) + Annual Investment] × (1 + r) Maturity = Investment × [(1+r)^n − 1] ÷ r × (1+r) Where: r = Annual interest rate ÷ 100 n = Tenure in years Interest Earned = Maturity − (Investment × n) Effective Yield = (Maturity ÷ Total Invested)^(1/n) − 1

PPF uses beginning-of-year (annuity due) compounding. Investing the full ₹1,50,000 before April 5th each year maximises interest, as the government calculates interest on the lowest balance between the 5th and last day of each month.

Understanding Your Results

Maturity Value The total tax-free amount you receive at the end of the PPF tenure. This includes your principal and all accumulated interest — entirely exempt from income tax at every stage (investment, interest, and maturity).
Total Interest Earned The cumulative tax-free interest credited to your account over the tenure. Because PPF interest compounds annually, the interest earned in later years grows substantially — making longer tenures significantly more rewarding.
Total Principal The total amount you contributed over the tenure. Contributions up to ₹1,50,000 per year also qualify for Section 80C deduction, effectively reducing your taxable income while building a tax-free corpus simultaneously.

Important Note

PPF has a mandatory 15-year lock-in with no premature full withdrawal. Partial withdrawals are permitted from the 7th year onwards (up to 50% of the balance at the end of the 4th preceding year). After maturity, you can extend the account in 5-year blocks — with or without fresh contributions — allowing the corpus to continue compounding tax-free. The PPF interest rate is set by the government each quarter, so actual returns may vary slightly from this estimate.