PPF is India's most trusted long-term savings instrument — guaranteed by the Government of India, fully tax-free under EEE status, and accessible to every Indian at any post office or major bank. But most people do not know how the interest is actually calculated, when they can make partial withdrawals, what happens after the 15-year maturity, or how much a ₹1.5 lakh annual deposit actually grows to. This guide covers everything — with exact worked examples.
PPF stands for Public Provident Fund. It is a long-term savings scheme launched by the Government of India in 1968, backed by a sovereign guarantee — meaning your money is as safe as money can be in India. It is available at all post offices and most major banks including SBI, HDFC, ICICI, Axis, and PNB.
PPF has a fixed tenure of 15 financial years from the year of account opening, with the option to extend in 5-year blocks indefinitely. The current interest rate is 7.1% per annum, compounded annually — set by the Ministry of Finance each quarter.
Who benefits most from PPF: Salaried individuals in the 20–30% tax bracket under the old regime — the EEE tax treatment makes the effective post-tax return significantly higher than the stated 7.1%. Someone in the 30% bracket earning 7.1% tax-free is effectively earning the equivalent of a 10.1% taxable return. That beats most FDs and even many debt funds after tax.
PPF interest calculation has one critically important rule that most account holders do not know: interest is calculated on the minimum balance between the 5th and the last day of each month. This means the date you deposit matters enormously.
If you deposit ₹1.5 lakh on 4 April, you earn interest on that amount for the full month of April. If you deposit the same ₹1.5 lakh on 6 April, you earn zero interest for April — the calculation uses only the balance on the 5th, which did not include your deposit yet. Over 15 years, this timing difference compounds to tens of thousands of rupees.
Always deposit before the 5th of April. The first week of April is the most important PPF deposit window of the year. Depositing ₹1.5 lakh on 1–4 April vs 6–31 April means the difference of one full month's interest — ₹887 on ₹1.5 lakh at 7.1%. Over 15 years with compounding, this single habit is worth ₹25,000–₹30,000 extra at maturity.
Monthly interest = (Minimum balance between 5th and last day × Annual rate) ÷ 12. All 12 monthly interest amounts are totalled and credited to your account on 31 March every year. The credited interest then becomes part of your balance and earns interest from April 1 — this is the compounding effect.
| Deposit Date | Included in April Calculation? | Monthly Interest Lost | Impact Over 15 Years |
|---|---|---|---|
| 1st – 4th April | Yes — earns for full month | ₹0 lost | Maximum corpus |
| 5th April | Borderline — check with bank | May lose April interest | Deposit on 1–4 to be safe |
| 6th – 30th April | No — misses April calculation | ~₹887 on ₹1.5L at 7.1% | ₹25,000–₹30,000 less at maturity |
PPF matures after 15 complete financial years from the financial year in which the account was opened — not 15 years from the date of first deposit. If you open an account in November 2026, the first financial year is FY 2026-27, and the account matures at the end of FY 2041-42 (31 March 2042).
At maturity you have three options:
Close the account and receive the entire corpus — principal + all compounded interest — fully tax-free. No TDS, no income tax, no declaration required in ITR. Simply submit a withdrawal form at your bank or post office.
Continue depositing up to ₹1.5 lakh per year and keep earning interest. All the same rules apply — 80C deduction, EEE status, partial withdrawal allowed. Must submit extension form within 1 year of maturity. Extension can be repeated indefinitely in 5-year blocks.
Stop depositing but keep the balance in the account — it continues earning interest at the prevailing PPF rate. You can withdraw any amount at any time without restriction. No form submission required — inaction automatically activates this option after 1 year of maturity.
Best option after 15 years for most people: If you are in the accumulation phase (still working, still earning), extend with contributions and keep maximising the tax-free compounding. If you are retired or no longer need the 80C deduction (new tax regime), extend without contributions — the corpus earns 7.1% tax-free with full liquidity, which beats most FDs on a post-tax basis.
How much does a PPF account actually grow to at different investment levels? All examples use 7.1% p.a. compounded annually, deposits made before the 5th of April each year for maximum interest.
All figures at ₹1,50,000/year deposit, 7.1% p.a. compounded annually, assuming rate remains constant. Extension calculations assume continued maximum contribution.
The 25-year PPF crore: Extending PPF by just 10 years beyond the mandatory 15 turns a ₹40.7L corpus into ₹1.03 crore — entirely tax-free. You invest ₹37.5L of your own money (25 years × ₹1.5L) and receive ₹1.03 crore at the end. The ₹65.5L difference is tax-free interest. No other guaranteed instrument in India comes close to this on a post-tax basis.
PPF allows partial withdrawals starting from the 7th financial year of account opening — subject to specific limits. This provides some liquidity during the long lock-in period without disturbing the full corpus.
| Financial Year | Withdrawal Allowed? | Maximum Amount | Frequency |
|---|---|---|---|
| Year 1 – Year 6 | No partial withdrawal | — | — |
| Year 7 onwards | Yes | 50% of balance at end of 4th year or preceding year — whichever is lower | Once per financial year |
| At Maturity (Year 15) | Full withdrawal | 100% of balance | One-time closure |
| After Extension (with contributions) | Yes | 60% of balance at start of extension block | Once per financial year |
| After Extension (without contributions) | Unlimited | Any amount at any time | No restriction |
Partial withdrawal does not reduce your 80C deduction. The deposit you made that qualified for 80C remains valid even if you partially withdraw later. However, if you withdraw and the account balance falls — your future interest base is lower. Avoid partial withdrawals unless genuinely necessary. Even loans against PPF (available years 3–6) are preferable to withdrawals that permanently reduce your compounding base.
If you need funds in the early years before partial withdrawal becomes available, PPF allows a loan facility from the 3rd to the 6th financial year. This is often the most cost-effective borrowing option for PPF account holders during this period.
Loan vs partial withdrawal: A PPF loan at 8.1% keeps your full balance intact and compounding — you repay the loan separately and your PPF corpus is untouched. A partial withdrawal permanently reduces your corpus and the future interest you earn on it. For amounts within the loan limit, always prefer the loan over a withdrawal during years 3–6.
PPF has EEE (Exempt-Exempt-Exempt) tax status — the most favourable tax treatment available to any investment in India. This means three separate tax exemptions apply across the life of the investment.
| Tax Event | PPF Treatment | FD Treatment | Equity SIP Treatment |
|---|---|---|---|
| Deposit / Investment | Exempt — 80C deduction up to ₹1.5L | No deduction (except 5-yr tax-saving FD) | ELSS only — 80C up to ₹1.5L |
| Interest / Returns Earned | Fully exempt — no tax | Fully taxable as income | LTCG tax 12.5% above ₹1.25L/year |
| Maturity Amount | Fully exempt — no tax | Principal tax-free; interest taxed | Gains taxed at LTCG rate |
| TDS applicable? | No TDS ever | 10% TDS above ₹40,000/year | No TDS on redemption |
Effective yield for 30% tax bracket investors: A PPF return of 7.1% tax-free is equivalent to a taxable return of approximately 10.1% for someone in the 30% tax bracket (plus cess). This means PPF at 7.1% beats most bank FDs at 7–7.5% (which are fully taxable) on a post-tax basis for high-income earners. The higher your tax bracket, the more valuable PPF's EEE status becomes.
New tax regime users: The Section 80C deduction on PPF is not available if you choose the new tax regime. However, the interest earned and maturity amount remain fully tax-free regardless of which regime you choose — the EEE status on the returns side applies in both regimes. Only the entry-level 80C deduction is lost under the new regime.
Three of the most popular investment options for Indian savers — each with different risk levels, returns, tax treatment, and liquidity. Here is the full picture.
| ₹1,50,000/year for 15 years | PPF (7.1%) | FD (7% taxable, 30% bracket) | Equity SIP (12% assumed) |
|---|---|---|---|
| Total Invested | ₹22,50,000 | ₹22,50,000 | ₹22,50,000 |
| Gross Maturity | ₹40,68,209 | ₹37,80,000 (approx) | ~₹75,00,000 |
| Tax on Returns | ₹0 | ~₹4,50,000 (30% on interest) | ~₹6,50,000 (LTCG 12.5%) |
| Post-Tax Corpus | ₹40,68,209 | ~₹33,30,000 | ~₹68,50,000 |
The smart approach: Use all three. PPF for your guaranteed, tax-free, no-risk bucket — max ₹1.5L/year. Equity SIP for your long-term growth bucket — any amount above ₹1.5L. FD for your 3–6 month emergency fund and short-term goals. Each instrument serves a different purpose — you do not have to choose just one.
This is the single most common and costly PPF mistake. Missing the pre-5th April deposit window means losing one full month's interest on your annual contribution. On a ₹1.5 lakh deposit at 7.1%, that is ₹887 per year lost. Compounded over 15 years, consistently depositing on the 6th of April instead of the 2nd costs approximately ₹25,000–₹30,000 at maturity — simply from timing. Set a calendar reminder for 1 April every year.
If you skip the minimum ₹500 deposit in any financial year, your PPF account becomes inactive. An inactive account cannot be used for loans or withdrawals, and reactivation requires a penalty of ₹50 per year of inactivity plus the missed minimum deposit of ₹500 per year. Many people forget this during busy years and discover their account is inactive when they need it most. Set up a recurring annual reminder or auto-transfer.
Any deposit above ₹1,50,000 in a financial year earns zero interest and gets no 80C deduction. It is effectively dead money sitting in your account. Many people accidentally cross this limit when they make multiple deposits across the year without tracking the total. Always track cumulative deposits and stop at ₹1,50,000 per financial year.
Most people withdraw their full PPF corpus at 15 years without realising how powerful extending is. A ₹40.7 lakh corpus extended for 10 more years at ₹1.5L/year grows to ₹1.03 crore — all tax-free. The compounding in years 16–25 is more powerful than years 1–15 because the base is much larger. Before withdrawing at maturity, always calculate the extension corpus and compare it against alternative uses of the money.
PPF is excellent for its role — risk-free, tax-free, guaranteed. But with a ₹1.5 lakh annual ceiling and 7.1% returns, it cannot build significant wealth on its own for most financial goals. A 30-year-old investing only in PPF will have ₹40.7L at 45 — not enough for retirement, children's education, and a home simultaneously. PPF is the safe base, not the entire foundation. Complement it with equity SIPs for growth.
PPF optimisation checklist: Deposit before 5th April every year → Always deposit at least ₹500 even in lean years → Never exceed ₹1.5L in a financial year → Consider extension over withdrawal at maturity → Use loan facility (years 3–6) rather than partial withdrawal when possible → Complement with equity SIP for long-term wealth building beyond ₹1.5L/year.