PPF Calculator

Open the PPF Calculator

The Public Provident Fund (PPF) is a government-backed savings scheme that many families use for long-term goals such as retirement or a child's education. You deposit money during the year, the government sets an interest rate that is reviewed every quarter, and the account matures after fifteen years. The Gunaka PPF calculator shows the maturity amount, the total you deposited and the interest earned for the yearly deposit, rate and number of years you enter. It runs in your browser, so the numbers you type stay on your device.

How the PPF balance is worked out in this calculator

The calculator uses a simple yearly model. At the start of each year you add your deposit to the balance, and the whole amount then grows by one year of interest. For a yearly deposit D and a rate R percent, the balance after each year is (previous balance + D) x (1 + R / 100). Repeating this for 15 years gives the maturity amount. The yearly deposit is capped at Rs 1,50,000 because that is the maximum allowed in a financial year under the scheme.

Real PPF interest is worked out on the lowest balance in each month and credited at the end of the financial year, so your passbook can differ from this model, especially if you deposit late in the year or in small instalments. Treat the result as a planning estimate.

A worked example you can check

Deposit Rs 1,00,000 at the start of every year for 15 years, and assume the rate stays at 7.1% a year. You deposit Rs 15,00,000 in total. The balance after 15 years is about Rs 27,12,139, so the interest earned is about Rs 12,12,139. At the maximum of Rs 1,50,000 a year, the total deposited is Rs 22,50,000 and the balance is about Rs 40,68,209. You can verify this with the closed-form sum D x 1.071 x (1.071^15 - 1) / 0.071.

The 7.1% used here is the rate India Post and the National Savings Institute have shown for PPF, and news reports for the October to December 2026 quarter say it was kept unchanged. We checked this on 4 November 2026. The government can change the rate in any quarter, so use the calculator to try a lower rate as well, and confirm the current rate on the India Post savings page or the National Savings Institute PPF page.

PPF rules worth knowing

The minimum deposit is Rs 500 and the maximum is Rs 1,50,000 in a financial year.
The account matures after fifteen complete financial years from the end of the year in which it was opened.
A loan is available from the 3rd to the 6th financial year, and a partial withdrawal is allowed from the 7th financial year.
After maturity you can extend the account in blocks of 5 years, with or without further deposits.
Deposits qualify for a deduction under Section 80C in the old tax regime, and PPF interest is described as exempt from income tax. Tax rules change, so check the Income Tax Department website or ask a tax professional.

For a full explanation read our [PPF guide with a 15-year example](/blog/ppf-rules-and-15-year-example/).

PPF compared with other options

PPF money is locked in for a long time, so it suits goals that are at least fifteen years away. If you want a shorter commitment, compare a bank deposit with the [FD calculator](/fd-calculator/) or a monthly saving with the [RD calculator](/rd-calculator/). If you are willing to take market risk for a possibly higher but uncertain return, see what a monthly investment could become with the [SIP calculator](/sip-calculator/). A SIP is market-linked and not guaranteed, while the PPF rate is set by the government.

Results are estimates for planning, not financial advice.

Frequently asked questions

How is the PPF maturity amount calculated?

In this calculator the balance each year is (previous balance + yearly deposit) x (1 + rate / 100), repeated for the number of years. Real PPF interest is calculated on monthly balances, so your passbook can differ slightly.

What is the maximum I can deposit in PPF in a year?

Rs 1,50,000 in a financial year. The calculator caps the yearly deposit at this limit. The minimum is Rs 500.

How long is the PPF lock-in?

The account matures after fifteen complete financial years. A loan is possible from the 3rd to the 6th year and partial withdrawal from the 7th year, as set out on the National Savings Institute page.

Is the PPF interest rate fixed for 15 years?

No. The government reviews the rate every quarter, so it can go up or down. Use the calculator with different rates to see how the result changes.

Can I extend my PPF account after 15 years?

Yes. You can extend it in blocks of 5 years, either with further deposits or without them, at the prevailing rate of interest.