Skip to content
Calculators Cafe

PPF Calculator

Project the maturity value of your Public Provident Fund deposits with yearly compounding at the current PPF rate.

India-specific calculator. It uses Indian rules, rates and rupee amounts, and the currency selector is switched off on this page.

The PPF calculator shows how much your Public Provident Fund account could be worth at maturity. PPF is a 15-year government savings scheme where interest is compounded annually and the entire maturity amount is tax-free under the old tax regime.

How to use the calculator

  • Enter how much you plan to deposit every year (minimum ₹500, maximum ₹1,50,000).
  • Set the PPF interest rate — the government notifies it every quarter.
  • Choose the tenure; a PPF account matures in 15 years and can be extended in blocks of 5.
  • Press the button to see your maturity value, total deposits and interest earned.

How it is calculated

M = P × [((1 + r)n − 1) / r] × (1 + r)
Where P = yearly deposit, r = annual rate, n = number of years. Deposits are made at the start of each year, so the (1 + r) factor applies.

Worked example

₹1,50,000 per year for 15 years at 7.1%

Total deposits = ₹22,50,000

Estimated maturity ≈ ₹40,68,000, with interest of about ₹18,18,000 — all tax-free.

Who should use this calculator

  • Long-term savers who want a government-backed product with a tax-free maturity amount.
  • Parents opening an account for a child and projecting what regular deposits could become.
  • Anyone using the old tax regime and looking to fill the ₹1.5 lakh 80C limit with something they would happily hold for 15 years.
  • Investors balancing an equity-heavy portfolio with a predictable debt allocation.

Common mistakes to avoid

  • Depositing after the 5th of the month. PPF interest is calculated on the lowest balance between the 5th and the last day of each month, so a late deposit can cost you a full month of interest.
  • Depositing more than ₹1,50,000 a year. The excess earns no interest and gives no deduction, so there is no reason to cross the limit.
  • Opening more than one account. Only one PPF account per person is allowed, plus one for a minor child.
  • Treating it as liquid. The money is locked for 15 years. Partial withdrawal is allowed only from year seven, with limits, and loans against the balance are capped.
  • Ignoring the extension option. After 15 years you can extend in blocks of five years, with or without fresh deposits, and the balance keeps earning interest.

Why the 15-year lock-in is the point

PPF is deliberately inflexible, and that is what makes it work. Because you cannot dip into it, the balance compounds untouched for 15 years at a rate notified quarterly by the government. Deposits qualify under section 80C, the interest is tax-free, and the maturity amount is exempt — the EEE structure that makes it one of the few products where the headline rate is also the post-tax rate.

Two habits make a real difference. Deposit before the 5th of April each year rather than spreading it out, so the full amount earns interest for the whole year. And if you can afford to extend the account after maturity, the same tax-free compounding keeps working on a much larger balance.

PPF terms explained

EEE status
Exempt-Exempt-Exempt: the deposit, the yearly interest and the maturity amount are all free of tax.
Deposit limit
Minimum ₹500 and maximum ₹1,50,000 per financial year. Anything above the cap earns nothing.
Partial withdrawal
Allowed from the seventh year onwards, up to 50% of the balance at the end of the fourth year.
Loan against PPF
A loan from the third to the sixth year, capped at 25% of the balance at the end of the second year.
Extension
Continuing the account for further blocks of five years after maturity, with or without new deposits.

Getting more out of a PPF account

Three habits make a measurable difference. Deposit the full amount in early April rather than at the end of the year, so the whole balance earns interest for twelve months instead of a few. Keep an eye on the extension: after fifteen years the account keeps earning, and you can continue in five-year blocks with fresh deposits or simply let the balance compound. Finally, treat PPF as the predictable part of your portfolio rather than the whole of it — its tax-free rate is excellent for safety, but over thirty years an all-PPF portfolio will struggle to beat inflation after tax.

Frequently asked questions

Is PPF interest taxable?

No. PPF enjoys exempt-exempt-exempt (EEE) status: your deposits qualify for deduction under section 80C (old regime), the yearly interest is tax-free, and the maturity amount is fully exempt from tax.

Can I change my yearly deposit amount?

Yes. PPF allows flexible deposits from ₹500 to ₹1,50,000 in a financial year, and you can change the amount each year. Depositing a lump sum before the 5th of the month can also earn interest for that month.

What happens after 15 years?

You can withdraw the entire maturity amount, or extend the account in blocks of five years — either with fresh deposits or without contributing further, while the existing balance keeps earning interest.

Please note: Interest rates for these schemes are notified periodically and can change. Treat the results as estimates and confirm current rates with the scheme provider.

More savings schemes