Estimate the maturity value of your Public Provident Fund (PPF) account based on your yearly contribution, the current interest rate, and the investment tenure.
The calculator assumes you deposit your full yearly amount at the start of each financial year. Every year, it adds that deposit to the running balance and then applies the annual rate: Balance at year end = (Previous balance + Yearly deposit) × (1 + Rate ÷ 100). Repeating this for each year of the tenure gives the maturity value.
This mirrors how PPF actually works. Interest is worked out every month on the lowest balance in the account between the 5th and the last day of that month, but it is credited only once a year, on 31 March. Because the interest is added to the balance only once a year, the scheme behaves like annual compounding.
The timing of your deposit matters. Money deposited on or before 5 April earns interest for all twelve months of that year, while a deposit made on 6 April misses April entirely. If you deposit ₹1.5 lakh at the end of every financial year instead of the start, the 15-year maturity at 7.1% drops from about ₹40.68 lakh to about ₹37.99 lakh, a difference of nearly ₹2.7 lakh for the same total investment.
Say you invest the maximum ₹1,50,000 at the start of every year at 7.1% for 15 years. At the end of the first year, the balance is 1,50,000 × 1.071 = ₹1,60,650. In the second year, you add another ₹1,50,000, and the balance becomes (1,60,650 + 1,50,000) × 1.071 = ₹3,32,706. Continuing for all 15 years, you invest ₹22.5 lakh and the account matures at about ₹40,68,209, of which about ₹18,18,209 is tax-free interest.
Maturity value for a ₹1,50,000 yearly deposit at 7.1%, including extensions in 5-year blocks with continued contributions:
| Years | Total Invested | Interest Earned | Maturity Value |
|---|---|---|---|
| 15 | ₹22,50,000 | ₹18,18,209 | ₹40,68,209 |
| 20 | ₹30,00,000 | ₹36,58,288 | ₹66,58,288 |
| 25 | ₹37,50,000 | ₹65,58,015 | ₹1,03,08,015 |
| 30 | ₹45,00,000 | ₹1,09,50,911 | ₹1,54,50,911 |
These figures assume the 7.1% rate stays the same throughout. In reality, the rate can change every quarter, so treat long-range numbers as estimates.
PPF rules are set by the government under the PPF Scheme, 2019, and can change. Confirm the latest rules with your bank or post office.
PPF interest and the maturity amount are tax-free. The deposit itself qualifies for a deduction of up to ₹1.5 lakh under section 80C of the old Act, but only if you choose the old tax regime. Under the new regime, which is the default for most taxpayers, there is no deduction for PPF deposits, though the interest stays tax-free. If you have moved to the new regime, PPF still works as a safe, government-backed, tax-free compounding account. It just no longer reduces your taxable income. Since the Income-tax Act, 2025 replaced the 1961 Act from April 2026, section numbers have changed, so verify the current provision with the Income Tax Department.