PPF Calculator — Deposit, Interest and Maturity Projection
Reviewed by Finin2min Editorial Desk · Last reviewed 12 August 2026
Project PPF deposits, interest and corpus while keeping the notified interest rate editable and scheme limits visible.
Project a PPF corpus
Projection
Total deposits
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Projected corpus
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Component
Amount
Projected interest
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This is a constant-rate projection. The Government notifies small-savings rates periodically, so actual PPF returns can differ.
Income-tax Act, 2025 note: The Section 80C deduction discussed above becomes Section 123 (read with Schedule XV) under the Income-tax Act, 2025, effective FY 2026-27. For FY 2025-26 and earlier, Section 80C remains the correct citation. Section numbering note: This page uses Income-tax Act, 1961 terminology for AY 2026-27 references. If applying the Income-tax Act, 2025 for a later year, verify the corresponding provision and exact wording from the official Gazette or Income Tax Department before citing a section number.
How This Is Calculated
The Public Provident Fund (PPF) has a mandatory 15-year lock-in (extendable in blocks of 5 years) and falls under Section 80C, with contributions eligible for deduction up to ₹1,50,000 per year. Annual deposits can range from ₹500 to ₹1,50,000. Interest is compounded annually at the rate notified by the government each quarter, and is credited based on whether deposits are made at the start or through the year. PPF enjoys EEE (Exempt-Exempt-Exempt) status — contributions, interest earned and maturity proceeds are all tax-free.
Frequently Asked Questions
What is the lock-in period for PPF?
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PPF has a mandatory 15-year lock-in from the year of account opening. After maturity, it can be extended indefinitely in blocks of 5 years, with or without further contributions.
What is the annual PPF deposit limit?
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A minimum of ₹500 and a maximum of ₹1,50,000 can be deposited into a PPF account in a single financial year. Deposits are eligible for Section 80C deduction up to the ₹1.5 lakh overall 80C limit (shared with other 80C investments like EPF, ELSS and life insurance premiums).
Is PPF interest and maturity amount taxable?
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No. PPF is one of the few instruments with EEE (Exempt-Exempt-Exempt) status — the contribution is deductible under 80C, interest earned every year is tax-free, and the maturity amount is fully tax-free on withdrawal.
How is the PPF interest rate decided?
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The PPF interest rate is notified by the Ministry of Finance every quarter, and is not fixed for the full tenure. It can go up or down each quarter, so long-term projections are estimates based on the rate you enter, not a guarantee.
Can I withdraw from PPF before maturity?
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Partial withdrawal is allowed from the 7th financial year onward, subject to limits (generally up to 50% of the balance at the end of the 4th year preceding the withdrawal year, or the immediately preceding year, whichever is lower). Premature closure is allowed only in specific cases like serious illness or higher education, with a reduced interest rate.
Scope: Computes the maturity value of a Public Provident Fund (PPF) account, based on annual deposits, the current PPF interest rate and the scheme's 15-year tenure (with extension options), per the PPF Scheme rules.
Calculation logic
Compute year-wise compounded balance by applying the PPF interest rate (compounded annually, credited at financial year-end, notified quarterly by the Government of India) to the running balance, adding each year's deposit for the 15-year deposit period.
Apply the scheme's minimum (₹500/year) and maximum (₹1,50,000/year) deposit limits when validating the entered annual deposit amount.
After the initial 15-year tenure, model extension options: (a) extension with further contributions in blocks of 5 years, continuing to compound and accept new deposits, or (b) extension without further contributions, where the balance continues to earn interest without new deposits — per the user's selection.
Inputs and assumptions
Uses the PPF interest rate applicable as of the calculation date — this rate is revised quarterly by the Ministry of Finance and the calculator's projection for future years uses the currently applicable rate as a planning assumption, since future rate changes cannot be predicted.
Deposit timing within the year affects interest earned (interest is computed on the lowest balance between the 5th and end of each month, per PPF rules) — the calculator applies the standard convention of a single annual deposit for simplicity unless the user enters month-wise deposit timing.
Exclusions and edge cases
PPF interest and maturity amount are exempt from tax under the EEE (Exempt-Exempt-Exempt) structure, per current income-tax provisions for this scheme — the calculator does not apply any tax deduction to the maturity figure.
Partial withdrawal (permitted from the 7th financial year, subject to prescribed limits) and loan-against-PPF (permitted in specific years, subject to prescribed limits) are not modelled in this maturity-value-only calculator — these would reduce the running balance if actually availed.
Finin2min is not registered with the Securities and Exchange Board of India (SEBI) as an Investment Adviser or as a Research Analyst. This tool performs an arithmetic calculation on the figures you enter and is published for general information and educational purposes only. It is not investment advice, it is not personalised to your financial circumstances, objectives or risk tolerance, and it is not a recommendation to buy, sell or hold any security, scheme or product. Projected values are illustrative and follow directly from the assumptions you supply; actual returns will differ, and past performance does not indicate future results. Consider consulting a SEBI-registered Investment Adviser before acting on any investment decision.