Calculate Public Provident Fund maturity amount
Built & maintained by Pappu Venkata Subbi Reddy, founder of Clacify · Updated July 2026 · Formulas verified against official Indian government sources
The PPF Calculator projects the maturity value of a Public Provident Fund account over its 15-year term. Enter your yearly contribution (up to the ₹1.5 lakh annual limit) and the current PPF interest rate, and it shows the year-by-year balance, total interest earned, and the final maturity amount. PPF is one of India's most popular long-term savings instruments because it carries a sovereign guarantee and enjoys EEE (Exempt-Exempt-Exempt) status — contributions qualify for Section 80C deduction, the interest is tax-free, and the maturity amount is tax-free. The calculator also illustrates how extending the account in 5-year blocks after maturity compounds the corpus further.
PPF interest is calculated on the lowest balance in the account between the 5th and the last day of each month, then credited annually at the financial year-end. The calculator compounds your annual contribution at the current notified rate (7.1% per annum at the time of writing) over the 15-year term: each year's closing balance becomes the next year's opening balance and earns interest. Because interest posts on the minimum monthly balance, depositing before the 5th of the month maximises returns — the tool reflects annual compounding for the standard lump-sum case. PPF rates are revised quarterly by the government, so update the rate field for the most accurate projection.
| Term | Total invested | Maturity corpus | Tax-free interest |
|---|---|---|---|
| 15 years | ₹22,50,000 | ₹40,68,209 | ₹18,18,209 |
| 20 years (one extension) | ₹30,00,000 | ₹66,58,288 | ₹36,58,288 |
| 25 years (two extensions) | ₹37,50,000 | ₹1,03,08,015 | ₹65,58,015 |
Assumes the full ₹1.5 lakh deposited at the start of each year at the current 7.1% rate. Extending in 5-year blocks after the initial 15 years is where PPF quietly turns into a crore-plus, entirely tax-free retirement corpus.
PPF is one of very few Indian instruments with triple-exempt (EEE) status. Your contribution is deductible under Section 80C (up to ₹1.5 lakh a year), the annual interest is completely tax-free, and the maturity amount is tax-free too. Compare that with a fixed deposit, where interest is taxed every year at your slab: in the 30% bracket, PPF's 7.1% tax-free is roughly equivalent to a 10%+ pre-tax FD — a rate no bank offers. That hidden tax edge is the real reason PPF outperforms FDs for long-term goals.
PPF interest is calculated on the lowest balance between the 5th and the last day of each month. So if you deposit after the 5th, that month's contribution earns no interest for the month. The simplest optimisation: pay your annual lump sum before the 5th of April, right at the start of the financial year, so the full ₹1.5 lakh earns interest for all twelve months. Over 15 years that timing alone adds a meaningful amount.
At maturity you can withdraw everything, or extend the account in blocks of 5 years — with or without fresh contributions. The table shows why extension is powerful: the corpus keeps compounding tax-free on a much larger base, so years 16–25 add far more than years 1–10 did. Extending with contributions turns PPF into a genuine, government-guaranteed retirement pillar alongside EPF and NPS.
The PPF interest rate for 2025 is 7.1% per annum, compounded annually. The interest is credited on 31 March each year. The rate has remained at 7.1% since April 2020. To get the maximum interest, ensure your deposit reaches the account before the 5th of each month.
Investing ₹1.5 lakh per year in PPF for 15 years at 7.1% yields approximately ₹40.68 lakh as the maturity amount. Total investment is ₹22.5 lakh (₹1.5 lakh × 15), and interest earned is about ₹18.18 lakh — completely tax-free.