PPF Calculator — Public Provident Fund
This PPF calculator works out the maturity value of a Public Provident Fund account, assuming you deposit your contribution at the start of each financial year — the standard convention for maximizing PPF interest, since PPF pays interest on the lowest balance between the 5th and last day of each month. Enter your annual contribution, the current PPF rate and your tenure to see your maturity value, total contribution and interest earned.
How much you deposit each financial year. PPF allows a minimum of ₹500 and a maximum of ₹1,50,000 per year.
Set by the government every quarter — currently 7.1%. Check the latest rate before relying on this projection for more than a year or two out.
PPF has a mandatory 15-year lock-in, then extends in blocks of 5 years for as long as you like.
Maturity value
Log in to save₹27,12,139
What your PPF account is worth at the end of the chosen tenure, assuming deposits are made at the start of every financial year.
How to use this ppf calculator
- 1Annual contribution: how much you deposit each financial year, between ₹500 and ₹1,50,000 — depositing before the 5th of April each year maximizes interest for that year.
- 2PPF interest rate: the government revises this every quarter; use the current published rate, but remember it will likely change again before your account matures.
- 3Tenure: PPF locks in for 15 years, then extends in blocks of 5 years indefinitely if you choose to continue — set this to a multiple of 5 years beyond 15 to model an extension.
Understanding your results
Maturity value is what your account is worth at the end of the tenure you selected. Total contributed is simply your annual contribution multiplied by the number of years. Total interest earned is the difference — the pure gain from compounding, which is entirely tax-free under PPF's EEE status.
The formula
Maturity = C × (((1 + r)ⁿ − 1) / r) × (1 + r)C is your annual contribution, r the annual interest rate as a decimal, and n the number of years. This is an annuity-due formula — it assumes each year's contribution is made at the start of the year and earns a full year of compounding on top of every prior year's compounded balance, which is why there's an extra (1 + r) factor compared with a standard end-of-year annuity. This matches how PPF actually accrues interest for someone who deposits early in the financial year each time.
A worked example
₹1,00,000 deposited at the start of each year for 15 years, at the default 7.1% rate: the maturity value works out to ₹27,12,139. Total contribution over 15 years is ₹15,00,000, so the interest earned is ₹12,12,139 — more interest than principal, entirely tax-free.
Things to know
The PPF rate is set by the Ministry of Finance every quarter and is not guaranteed to stay at today's level for your full tenure — this calculator applies one flat rate across the whole period for simplicity, which will diverge from your real maturity value if the rate changes (as it has almost every quarter historically). PPF has a 15-year mandatory lock-in from account opening, extendable indefinitely in 5-year blocks; partial withdrawals are permitted from the 7th financial year onward, subject to limits. Always verify the current rate and rules against official India Post or bank PPF scheme guidance before making contribution decisions.
Frequently asked questions
Can I withdraw money from my PPF account before it matures?+
Partial withdrawal is allowed from the 7th financial year of account opening, up to a limit tied to your balance. Premature closure (before 15 years) is allowed only in specific cases like serious illness or higher education, and even then a penalty rate applies. This calculator assumes no withdrawals during the tenure.
Is PPF interest and maturity amount taxable?+
No — PPF has EEE (Exempt-Exempt-Exempt) tax status. Your contribution qualifies for an 80C deduction, the annual interest is tax-free, and the maturity amount is also fully tax-free. This makes PPF one of the few genuinely tax-free long-term instruments in India.
What happens after the 15-year lock-in ends?+
You can withdraw the full balance and close the account, or extend it in blocks of 5 years — either with fresh contributions (you must actively opt in within a year of maturity) or without further contributions, where the balance simply keeps earning interest. This calculator's tenure field lets you model any of these by choosing 15, 20, 25 years and so on.