Post Office PPF Calculator 2026 – Maturity Amount & Interest (7.1%)
Post Office Calculator

Post Office PPF Calculator – Public Provident Fund Maturity & Interest (2026)

Find out how much your PPF account will grow to, and see exactly how that number is calculated: monthly rate, interest for each year, compounding and the final maturity value, all worked out step by step.

Rate: 7.1% p.a. (Oct–Dec 2026)Tax-free (EEE)Updated 14 Nov 2026

PPF Calculator

Enter your details

Minimum ₹500, maximum ₹1,50,000 per financial year.

Deposits made by the 5th earn interest for that month. April = full 12 months of interest.

Current rate: 7.1% for Oct–Dec 2026. Tenure beyond 15 years assumes you extend the account in 5-year blocks with contributions.

Raises your deposit every year, but never above the legal limit.

Your PPF result

Maturity amount
–
Total invested
–
Interest earned
–
Tax-free
Interest share
–
of maturity value
Amount you investInterest earned
PPF interest is tax-free. If you are in the tax slab, a fully taxable FD would need to pay about – to match PPF’s after tax.

How your PPF result was calculated, step by step

The steps below update with your inputs, so you can follow each rupee from your deposit to the maturity amount.

    Year-by-year growth table

    Every year: Closing balance = Opening balance + Deposits + Interest. The closing balance becomes next year’s opening balance, which is how PPF compounds.

    YearOpening balanceDepositInterest earnedClosing balance

    What is PPF (Public Provident Fund)?

    The Public Provident Fund (PPF) is a long-term, government-backed savings scheme in India, available at post offices and authorised banks. You deposit money regularly, it earns a fixed rate of interest set by the Government every quarter, and after 15 years you receive the whole balance, with no tax on the interest or the maturity amount.

    A PPF calculator estimates that final amount. Instead of only giving you a number, this one shows the monthly interest rate, the interest added each year and how the balance compounds, so you can verify the result or reproduce it by hand.

    PPF at a glance

    Interest rate7.1% per annum for October–December 2026 (reviewed every quarter by the Ministry of Finance)
    CompoundingInterest is worked out monthly and compounded annually, credited on 31 March
    Tenure15 years, extendable in blocks of 5 years
    Deposit limits₹500 minimum and ₹1,50,000 maximum per financial year
    Tax treatmentEEE: deduction under Section 80C (old regime), tax-free interest, tax-free maturity
    Who can openResident Indian individuals (one account each); guardians can open for minors. New accounts for NRIs are not allowed.
    WherePost offices and authorised banks
    Loan / partial withdrawalLoan from the 3rd to 6th financial year; partial withdrawal from the 7th financial year

    PPF calculation formula

    PPF follows two rules: interest is calculated monthly on the eligible balance, and it is credited once a year on 31 March. That gives a year-by-year formula that works for any deposit pattern:

    Monthly interest = Eligible balance × (r ÷ 12)
    Yearly interest = Sum of the 12 monthly interest amounts
    Closing balance = Opening balance + Deposits + Yearly interest

    Here r is the annual rate as a decimal (7.1% = 0.071) and the eligible balance is the lowest balance in the account between the 5th and the end of the month.

    Shortcut when you deposit once a year by 5 April

    If you deposit the same amount P by 5 April every year, each deposit earns interest for the full year and the maturity value has a closed form:

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

    M = maturity amount, P = yearly deposit, r = annual rate as a decimal, n = number of years. This is a future value of an annuity-due. Because PPF rounds interest to the nearest rupee each year, the calculator’s table can differ from this shortcut by a few rupees.

    PPF calculation example

    Question: You deposit ₹1,50,000 on 5 April every year for 15 years at 7.1% p.a. What is the maturity amount?

    1. Year 1 interestThe deposit stays for all 12 months, so interest = 1,50,000 × 7.1% = ₹10,650. Closing balance = 1,50,000 + 10,650 = ₹1,60,650.
    2. Year 2 interestOpening ₹1,60,650 + new deposit ₹1,50,000 = ₹3,10,650. Interest = 3,10,650 × 7.1% = 22,056.15 ≈ ₹22,056. Closing = ₹3,32,706.
    3. Year 3 interest₹3,32,706 + ₹1,50,000 = ₹4,82,706. Interest = 4,82,706 × 7.1% ≈ ₹34,272. Closing = ₹5,16,978.
    4. Repeat to year 15Continuing the same way for 15 years gives a closing balance of ₹40,68,208.
    5. Check with the formula(1.071)15 ≈ 2.7980, so ((2.7980 − 1) ÷ 0.071) ≈ 25.3234. Then M = 1,50,000 × 1.071 × 25.3234 ≈ ₹40,68,209, matching within ₹1.

    Answer: You invest ₹22,50,000 and earn about ₹18,18,208 in tax-free interest, for a maturity value of about ₹40.68 lakh.

    More examples at 7.1% (assuming the rate never changes)

    DepositTenureTotal investedInterest earnedMaturity value
    ₹1,50,000 / year (by 5 April)15 yrs₹22,50,000₹18,18,208₹40,68,208
    ₹1,50,000 / year (by 5 April)20 yrs₹30,00,000₹36,58,287₹66,58,287
    ₹1,50,000 / year (by 5 April)25 yrs₹37,50,000₹65,58,012₹1,03,08,012
    ₹1,50,000 / year (by 5 April)30 yrs₹45,00,000₹1,09,50,907₹1,54,50,907
    ₹50,000 / year (by 5 April)15 yrs₹7,50,000₹6,06,070₹13,56,070
    ₹5,000 / month15 yrs₹9,00,000₹6,77,841₹15,77,841
    ₹12,500 / month15 yrs₹22,50,000₹16,94,600₹39,44,600
    ₹1,50,000 / year deposited in December15 yrs₹22,50,000₹16,38,411₹38,88,411

    What this shows: investing the same ₹1.5 lakh in April instead of December earns about ₹1.8 lakh more over 15 years, because of the 5th-of-the-month rule and the extra months of interest each year. Try it in the calculator above by changing the deposit month.

    Frequently asked questions about PPF

    What is a PPF calculator and how does it work?
    A PPF calculator estimates the maturity amount and interest on a Public Provident Fund account. It applies the PPF rule that interest is calculated every month on the eligible balance, credited on 31 March and added to the balance, so the next year’s interest is earned on a bigger amount (annual compounding). This calculator also shows each step of that working.
    What is the current PPF interest rate?
    The PPF interest rate is 7.1% per annum for the October–December 2026 quarter. The Finance Ministry kept it unchanged from the July–September 2026 quarter. The government reviews small-savings rates every quarter, so the rate can change in future quarters.
    How is PPF interest calculated?
    Interest for each month is calculated on the lowest balance in the account between the 5th and the last day of that month, at one-twelfth of the annual rate. The twelve monthly amounts are added up and credited on 31 March, and the credited interest then earns interest in later years.
    Why should I deposit in PPF before the 5th of the month?
    A deposit made on or before the 5th counts towards that month’s interest. A deposit made after the 5th only starts earning from the next month. Depositing the full year’s amount by 5 April gives twelve months of interest on it, which is why it gives the highest maturity value.
    How much can I invest in PPF every year?
    You can deposit a minimum of ₹500 and a maximum of ₹1.5 lakh in a financial year, in one lump sum or in instalments. Amounts above ₹1.5 lakh do not earn interest and do not qualify for any tax benefit.
    What will I get on maturity if I invest ₹1.5 lakh every year in PPF?
    At 7.1% for 15 years, with ₹1,50,000 deposited by 5 April each year and the rate unchanged, the maturity value is about ₹40.68 lakh. You deposit ₹22.5 lakh and earn about ₹18.18 lakh as tax-free interest.
    Can I extend my PPF account after 15 years?
    Yes. After maturity you can extend the account in blocks of 5 years, with or without further contributions. To continue making deposits you must submit the extension request within one year of maturity. If you do nothing, the balance stays in the account and continues to earn interest without fresh deposits.
    Is PPF interest taxable?
    No. PPF is an Exempt-Exempt-Exempt (EEE) scheme: deposits qualify for a deduction under Section 80C (old tax regime, up to ₹1.5 lakh), the interest is tax-free and the maturity amount is tax-free. The 80C deduction is not available under the new tax regime.
    Can I withdraw money or take a loan from PPF before maturity?
    A loan against the balance is available from the 3rd to the 6th financial year. Partial withdrawal is allowed from the 7th financial year, limited to 50% of the balance at the end of the 4th year before the year of withdrawal or the preceding year, whichever is lower. Premature closure is allowed only in specific cases after 5 years, usually at a reduced rate. Check the exact rules with your post office or bank.
    Does this calculator account for future changes in the PPF rate?
    No. It assumes the rate you enter stays constant for the whole tenure. Because the rate is reviewed every quarter, your actual maturity amount may be higher or lower. You can re-run the calculator with a different rate to test scenarios.

    Related Posts

    Leave a Comment

    Your email address will not be published. Required fields are marked *

    Scroll to Top