Public Provident Fund (PPF) maturity and interest calculator
The Public Provident Fund is a long-term, government-backed savings scheme in India administered by the National Savings Institute. It offers tax-free returns under Section 80C, annual interest compounding, and a default 15-year lock-in period with extension options of 5 years each. This calculator projects maturity value, total interest, and year-wise balance growth based on your annual contribution and the notified interest rate.
For market-linked retirement planning, compare projections with our National Pension Scheme calculator. For fixed monthly deposits at post offices, see the post office monthly income scheme calculator.
How PPF yearly compounding works
PPF interest is calculated on the lowest balance between the 5th and last day of each month, but credited once at the end of the financial year (March 31). For annual projection purposes, each year's deposit is treated as made at the start of the year and compounded forward:
Where B is the running balance, P is the yearly investment, r is the annual interest rate, and y is the year number. The government-notified rate of 7.1% p.a. effective 1 April 2025 is used as the default.
Depositing ₹1,50,000 per year for 15 years at 7.1% produces a maturity of approximately ₹40,68,209: ₹22,50,000 invested and about ₹18,18,209 in interest. Verify similar compounding logic with our compound interest calculator or one-time deposit growth with the lumpsum calculator.
Tenure, extensions, and contribution limits
Every PPF account has an initial maturity period of 15 years from the end of the financial year in which the account was opened. After maturity, you can extend the account in blocks of 5 years with or without making further contributions. This calculator supports 15, 20, 25, and 30-year horizons to model standard and extended tenures.
- Minimum deposit: ₹500 per financial year to keep the account active.
- Maximum deposit: ₹1,50,000 per financial year across all PPF accounts held by an individual.
- Tax benefits: Contributions qualify for Section 80C deduction. Interest earned and maturity proceeds are exempt from income tax.
PPF vs other government savings schemes
PPF suits long-term wealth building with complete capital safety. The National Savings Certificate (NSC) and Senior Citizens Savings Scheme (SCSS) offer different tenures and rate structures. PPF stands out for its EEE tax status (exempt on contribution, accrual, and withdrawal) and 15-year discipline that discourages premature withdrawals except under specific conditions such as medical emergencies or higher education.
Frequently asked questions
What is the current PPF interest rate?
What is the maximum I can invest in PPF each year?
Can I extend my PPF account after 15 years?
Is PPF interest taxable?
When is PPF interest credited?
Can I withdraw from PPF before maturity?
Resources and references
The formulas and methods in this calculator were checked against these independent sources.