PPF Calculator: Public Provident Fund Maturity and Interest

A PPF interest calculator and PPF maturity calculator in one: see your Public Provident Fund maturity value and year-by-year growth at 7.1%, with 15+5 year extensions. Free, no sign-up, and it runs in your browser.

Min ₹500 · Max ₹1,50,000 per financial year · multiples of ₹50
Current rate: 7.1% (Oct–Dec 2026), compounded yearly
The account matures 15 full years after the year you open it, so you can often deposit 16 times. Why?
Maturity value after 15 years
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InvestedInterest
Total invested–
Total interest earned–

Assumes each yearly deposit is made before 5 April.

Year-by-year PPF growth

YearOpening balanceDepositInterestClosing balance

How PPF works

The Public Provident Fund (PPF) is a long-term savings scheme backed by the Government of India. You can open an account at a post office or at most large banks, and you can hold only one account in your own name. Because the government sets the rate and guarantees the balance, PPF is one of the safest places to build a retirement or education fund.

You deposit between ₹500 and ₹1,50,000 in each financial year (April to March), in multiples of ₹50, either as a lump sum or in instalments. The interest rate is reviewed every quarter and is currently 7.1% a year. Interest is worked out each month on the lowest balance between the 5th and the last day of the month, and it is credited once a year on 31 March. That credited interest then earns interest the following year, so your money compounds yearly.

New to PPF? Our step-by-step guide on how PPF works covers who can open an account, the documents you need and how PPF compares with a bank FD.

PPF formula with a worked example

If you deposit the same amount every year before 5 April, each year works like this: closing balance = (opening balance + deposit) × (1 + rate). Over n years with a yearly deposit P and rate r, the maturity value is:

Maturity = P × [(1 + r)n − 1] ÷ r × (1 + r)

Example: ₹1,50,000 a year at 7.1%. In year 1 you deposit ₹1,50,000 and earn ₹10,650 interest, ending with ₹1,60,650. In year 2 you add another ₹1,50,000, so interest is 7.1% of ₹3,10,650, which is ₹22,056, and the year closes at ₹3,32,706. Continue this for 15 years and the account grows to ₹40,68,209. You put in ₹22,50,000, and ₹18,18,209 of the final amount (about 45%) is tax-free interest.

15 vs 16 deposits: which is right?

A PPF account matures after 15 full financial years, counted from the end of the year in which you open it. The year of opening is not counted. So if you open the account and deposit in, say, April 2026, you can keep depositing every year until the account matures on 1 April 2042. That is 16 deposits, not 15.

Most PPF calculators show 15 deposits, and that is this calculator's default (₹40.68 lakh for ₹1.5 lakh a year). Tick “Count 16 deposits” to include the deposit made in the opening year. The same plan then grows to about ₹45.18 lakh. If you open your account late in a financial year, the 15-deposit figure is closer to what you will actually get.

Extending PPF after maturity

When the account matures you can withdraw everything, or keep it running. There are two ways to keep it running:

Extend with deposits: submit the extension form at your bank or post office within one year of maturity, and keep depositing for another 5 years. You can repeat this as many times as you like. Five more years of ₹1.5 lakh deposits takes the example above to about ₹66.58 lakh.

Continue without deposits: if you do nothing, the account stays open and keeps earning interest, but you cannot start depositing again later. Even without new deposits, the ₹40.68 lakh grows to about ₹57.33 lakh after 5 more years.

Tax benefits of PPF

PPF has EEE (exempt-exempt-exempt) status. Under the old tax regime, deposits of up to ₹1.5 lakh a year can be claimed as a deduction (traditionally under Section 80C). The yearly interest is not taxed, and the maturity amount is tax-free too. The new tax regime does not give the deduction for deposits, but interest and maturity stay tax-free. That makes PPF especially useful for people in higher tax brackets, because a 7.1% tax-free return can beat a taxable fixed deposit offering a higher headline rate.

Withdrawal, loan and closure rules

Loans: from the 3rd to the 6th financial year you can borrow up to 25% of the balance at the end of the second year before you apply. The interest charged is 1 percentage point above the PPF rate if you repay within 36 months.

Partial withdrawal: from the 7th financial year you can withdraw once a year, up to 50% of the balance at the end of the 4th year before the withdrawal or of the previous year, whichever is lower. You do not repay withdrawals.

Premature closure: allowed only after 5 full financial years, and only for reasons such as a life-threatening illness in the family, higher education, or a change in residency status. Interest for the whole period is then recalculated at 1 percentage point below the rates that applied.

Tips to get the most from PPF

Deposit before 5 April. A deposit made by the 5th counts for that whole month, so depositing your full amount before 5 April earns interest for all 12 months.

If you pay monthly, pay by the 5th. A deposit made on the 6th misses that month's interest.

Never skip a year. If you do not deposit at least ₹500 in a year, the account becomes inactive, and you will need to pay a small penalty plus the missed deposits to revive it.

Open early and add a nominee. The 15-year clock starts at the end of the year you open the account, so opening sooner brings maturity forward. A nominee makes it easy for your family to claim the money.

PPF Calculator: frequently asked questions

What is the current PPF interest rate?

The PPF interest rate is 7.1% per year, compounded annually, for the October–December 2026 quarter. The Government of India reviews the rate every quarter, so this calculator lets you change it to test other rates.

How is PPF interest calculated?

Interest is calculated every month on the lowest balance between the 5th and the last day of that month, and the total is credited to your account once a year on 31 March. This calculator assumes you deposit your full yearly amount before 5 April, which earns interest for the whole year and gives the highest possible maturity value.

What is the minimum and maximum deposit in PPF?

You must deposit at least ₹500 in a financial year to keep the account active, and you can deposit at most ₹1,50,000 per financial year. Deposits must be in multiples of ₹50, and you can pay as a lump sum or in several instalments during the year.

How much will ₹1.5 lakh per year in PPF become after 15 years?

At 7.1%, depositing ₹1,50,000 at the start of every year for 15 years grows to about ₹40,68,209. You invest ₹22,50,000 and earn about ₹18,18,209 in interest. If you also make a deposit in the year you open the account (16 deposits in total), the maturity value rises to about ₹45,17,702. Tick the 16-deposit option above to see this.

Can I extend my PPF account after 15 years?

Yes. After maturity you have two choices. You can extend the account in blocks of 5 years with fresh deposits, as many times as you like, by submitting the extension form within one year of maturity. Or you can simply keep the account open without new deposits, and it keeps earning interest. If you continue without deposits, you cannot start depositing again later. Use the extension option above to compare both.

Is PPF interest and maturity amount taxable?

No. PPF has EEE status: the interest earned and the maturity amount are both tax-free. Deposits of up to ₹1.5 lakh a year can also be claimed as a deduction under the old tax regime (traditionally Section 80C). The new tax regime does not allow this deduction, but the interest and maturity amount remain tax-free.

Does this give the same result as the SBI or post office PPF calculator?

Yes, for the same deposits and timing. PPF rules and the interest rate are set by the Government of India and are the same at the post office and every bank that offers PPF, including SBI, HDFC and ICICI. Only the way each website assumes your deposit dates may differ, so check whether a calculator assumes deposits before 5 April, as this one does.

Can I use this PPF calculator for monthly deposits?

Yes, as an estimate. Enter your total for the year, for example ₹12,500 a month as ₹1,50,000. This calculator assumes the whole amount is in the account before 5 April, so it shows the best case. If you deposit monthly by the 5th of each month, each instalment earns interest only from its own month, so your real maturity value will be somewhat lower.

Can I withdraw money from PPF before maturity?

Partial withdrawals are allowed from the 7th financial year, up to 50% of a specified past balance, once per year. Loans against the balance are available from the 3rd to the 6th year. Premature closure is allowed only after 5 years from the end of the year you opened the account, and only for specific reasons such as serious illness or higher education. If you close early, interest for the whole period is recalculated at 1 percentage point below the rates that applied.

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