What Is Public Provident Fund (PPF) — How It Works, Returns, and the 15-Year Lock-In Explained

The Public Provident Fund has paid 7.1% interest per year since the first quarter of FY 2020-21 — one of the longest stable runs in the scheme's 58-year history. At the maximum contribution of ₹1.5 lakh per year for the full 15-year lock-in, a single PPF account compounds to roughly ₹40.7 lakh at maturity, with the entire amount tax-free under the EEE treatment. The combination of a guaranteed government-backed return, full tax exemption on interest and maturity, and a relatively forgiving partial-withdrawal mechanism from year 7 makes PPF one of the most-used long-term savings vehicles in India.

This post covers what PPF actually is, how the interest mechanics work, what the lock-in and withdrawal rules allow, the EEE tax treatment in detail, and a worked example of how ₹1.5 lakh per year compounds across the 15-year horizon.

What PPF actually is

The Public Provident Fund is a long-term savings scheme introduced by the Government of India in 1968 under the National Savings Institute. It is administered by the Ministry of Finance's Department of Economic Affairs and operated through India Post and designated commercial banks (SBI, ICICI, HDFC, PNB, Bank of Baroda, Axis, Kotak, and others).

Three defining characteristics distinguish PPF from other Indian savings instruments:

Government-backed guaranteed return. The interest rate is announced quarterly by the Ministry of Finance — not by market forces. Once announced, the rate applies for that quarter regardless of bank-deposit rates or market movements. The return is backed by the sovereign guarantee of the Government of India.

15-year lock-in. Funds are committed for 15 financial years from the end of the year the account is opened. This makes PPF unusable as an emergency fund or short-term saving vehicle — covered in our explainer on what is an emergency fund — but the long lock-in is also what makes the compounding effect substantial.

EEE (Exempt-Exempt-Exempt) tax treatment. Contributions, interest, and maturity are all tax-exempt. This combination is rare in the Indian tax code — only a handful of instruments (PPF, EPF, Sukanya Samriddhi Yojana, certain insurance maturities under specific conditions) get all three legs of EEE.

Who can open a PPF account

Eligibility is restricted to Indian residents:

Eligible	Not eligible
Indian residents (individuals)	Non-Resident Indians (NRIs) — cannot open new accounts
Guardians on behalf of minor children	Hindu Undivided Families (HUFs) — disallowed since 2005
One account per person across all banks and post offices	Joint accounts not permitted

NRIs who held a PPF account before becoming NRI can continue contributing until the original 15-year maturity but cannot extend the account further. A parent or legal guardian can open a PPF account on behalf of a minor child, but the combined maximum across the parent's own account and the minor's account is still ₹1.5 lakh per year.

How PPF interest is calculated

The interest rate is set by the Ministry of Finance and revised every quarter. The current rate of 7.1% has been stable since Q2 FY 2020-21 — but historical rates have ranged from 12% in the 1980s down to the current level as government bond yields have fallen.

Interest is calculated monthly but credited annually, based on the minimum balance in the account between the 5th and the last day of each calendar month. This produces a specific deposit-timing rule that experienced PPF holders use:

Deposit money before the 5th of the month to earn that month's interest. Deposits made between the 6th and the 30th/31st earn interest only from the following month.

Across a financial year, this timing difference can affect the year's earned interest by ₹500-2,000 on a large deposit. Not enormous, but compounded over 15 years it's a meaningful amount.

Interest is compounded annually (unlike a typical bank savings account which compounds quarterly or even daily). The compounding mechanic is covered in detail in our piece on what is compound interest, but the short version: each year's interest gets added to the principal, and the next year's interest is calculated on the new larger base.

A worked example — ₹1.5 lakh/year for 15 years at 7.1%

The maximum contribution scenario:

Year	Annual contribution	Year-end balance
1	₹1,50,000	₹1,60,650
5	₹1,50,000	₹9,28,470
10	₹1,50,000	₹22,32,440
15 (maturity)	₹1,50,000	₹40,68,210

Total contributed across 15 years: ₹22.5 lakh. Total interest earned: ₹18.18 lakh. Maturity value: roughly ₹40.7 lakh — fully tax-free.

The "interest earned" portion is 81% of the principal — a near-doubling of contributions across the lock-in. This is the compounding effect at work: in year 1, the interest is calculated on ₹1.5 lakh; in year 15, it's calculated on a balance that has been growing all along.

A smaller-contribution example. ₹50,000 per year (instead of the maximum ₹1.5 lakh) for 15 years at 7.1%: total contributed ₹7.5 lakh, maturity value about ₹13.56 lakh, interest earned about ₹6 lakh. Same multiplier, scaled down proportionally. To run your own numbers — including longer extensions like 20, 25, or 30 years — use our PPF Maturity Calculator.

The 15-year lock-in and partial withdrawal rules

The lock-in is the most-misunderstood part of PPF. Two specific exceptions allow some access to funds before maturity.

Partial withdrawals from year 7. Starting from the 7th financial year of the account, one partial withdrawal per year is permitted. The withdrawal is capped at the lower of:

• 50% of the balance at the end of the 4th preceding financial year, OR
• 50% of the balance at the end of the immediately preceding financial year

For an account opened in FY 2020-21, the first eligible withdrawal year is FY 2027-28. If the account balance at the end of FY 2023-24 was ₹6 lakh and at the end of FY 2026-27 was ₹15 lakh, the maximum withdrawal in FY 2027-28 is ₹3 lakh (50% of the lower ₹6 lakh).

Loan facility from year 3 to year 6. Between the 3rd and 6th financial year, a loan is available against the PPF balance. Loan limit is 25% of the balance at the end of the 2nd preceding year. Interest on the loan is 1 percentage point above the prevailing PPF rate (currently 7.1% PPF rate means 8.1% loan rate). The loan must be repaid within 36 months in lump sum or installments.

Premature closure is permitted only in three specific situations: serious illness of the account holder or dependent, higher education of the holder, or change in residency status (becoming NRI). Even in these cases, a 1% interest penalty applies — the account is paid out at the PPF rate minus 1% across the entire holding period. Premature closure is only permitted after the 5th financial year.

EEE tax treatment in detail

PPF is one of the few instruments in Indian taxation that qualifies for EEE — exempt at all three stages:

Stage	Treatment	Reference
Contribution	Deductible under Section 80C, up to ₹1.5 lakh/year combined with other 80C investments	Section 80C of the Income Tax Act
Interest accrual	Fully exempt from income tax	Section 10(11) of the Income Tax Act
Maturity	Principal and accumulated interest both tax-free	Section 10(11)

The Section 80C deduction limit of ₹1.5 lakh is shared across PPF contributions, EPF contributions, ELSS mutual funds, life insurance premiums, principal repayment on home loan, and several other instruments. PPF doesn't have its own dedicated limit — it competes with these other 80C options.

The interest exemption is what makes PPF particularly attractive vs taxable instruments like fixed deposits. A 7.1% PPF return is roughly equivalent to a 10.1% pre-tax FD return for someone in the 30% income tax slab — because the FD interest gets taxed at the slab rate while PPF interest doesn't.

Account extension after maturity

At the end of the 15-year maturity, the account holder has three options:

1. Close the account and withdraw the entire maturity amount (₹40.7 lakh in the worked example above), fully tax-free.

2. Extend the account in a 5-year block WITHOUT fresh contributions. The existing balance continues to earn the prevailing PPF rate; no new deposits are required or allowed. Partial withdrawals once per year are permitted during the extension.

3. Extend the account in a 5-year block WITH fresh contributions. Continue depositing up to ₹1.5 lakh per year, earning the prevailing PPF rate. Withdrawal is limited to 60% of the balance at the start of the extension period, taken across the 5-year extension.

Many long-term PPF holders extend repeatedly across multiple 5-year blocks, treating the account as a permanent tax-free compounding vehicle. There is no published limit on how many extensions are allowed.

What PPF is good for and what it isn't

Good for:

• Long-horizon goals 15+ years out (children's higher education, retirement supplement, house down payment where the timeline allows)
• Tax-saving under Section 80C with the cleanest possible tax treatment
• Risk-free long-term wealth accumulation for conservative savers
• Holding alongside more growth-oriented investments as the "guaranteed return" component of a balanced portfolio

Not good for:

• Emergency funds (locked in for 15 years; covered in how to build an emergency fund)
• Short-horizon goals under 5 years (the lock-in defeats the purpose)
• Higher-return-seeking investors (equity mutual funds have historically produced ~10-14% long-term returns vs PPF's 7.1%, though with significant short-term volatility)
• Anyone who needs flexible access to funds — even partial withdrawals are limited and only from year 7

What experts say

The India Post PPF page is the authoritative source for current rules, eligibility, and account-opening procedure through post offices. The RBI's Master Direction on Small Savings Schemes covers the regulatory framework that PPF operates under, including the quarterly rate-setting mechanism.

The Income Tax Department's Section 10(11) guidance covers the tax exemption mechanics. The PFRDA (Pension Fund Regulatory and Development Authority) doesn't regulate PPF directly but publishes useful comparisons between PPF and NPS for retirement planning purposes.

For the underlying mechanics that make the 15-year compounding work, see what is compound interest. For related government schemes covered in this pillar, see what is Sukanya Samriddhi Yojana (the girl-child equivalent with a slightly higher 8.2% rate) and what is Employee Provident Fund (EPF) (the workplace-linked sibling at 8.25%).

Frequently asked questions

What is the current PPF interest rate in 2026? As of Q1 2026 the PPF interest rate is 7.1% per year, compounded annually. The rate is set by the Ministry of Finance (Department of Economic Affairs) and reviewed every quarter. It has stayed at 7.1% since Q2 2020-21 — one of the longest stable runs in the scheme's history. The rate applies to the minimum balance in the account between the 5th and the last day of each month, so depositing before the 5th of the month earns interest for that full month.

How much can I invest in PPF per year? The minimum deposit is ₹500 per financial year (April 1 to March 31). The maximum is ₹1.5 lakh per year across all PPF accounts in your name (including any opened for minor children). Deposits can be made in up to 12 installments per year or as a single lump sum. Crossing the ₹1.5 lakh cap doesn't earn interest on the excess and isn't eligible for the Section 80C deduction.

What is the PPF lock-in period and can I withdraw early? PPF has a 15-year lock-in from the end of the financial year in which the account is opened. Partial withdrawals are allowed once per year starting from the 7th financial year — capped at 50% of the balance at the end of the 4th preceding year or the balance at the end of the preceding year, whichever is lower. A loan facility is available between the 3rd and 6th years at 1% above the prevailing PPF rate. After the 15-year maturity, the account can be extended in 5-year blocks indefinitely.

What are the tax benefits of PPF? PPF has EEE (Exempt-Exempt-Exempt) tax treatment, one of the most favourable in the Indian tax code. Contributions up to ₹1.5 lakh/year are deductible under Section 80C of the Income Tax Act. The annual interest credited is fully tax-free. The maturity amount (principal plus all interest) is also tax-free. This combination makes PPF one of the few investments where the entire growth compounds without any tax drag over the 15-year horizon.

In summary

PPF is a 15-year, government-backed Indian savings scheme paying 7.1% interest (as of Q1 2026), with a maximum contribution of ₹1.5 lakh per year and EEE tax treatment that exempts contributions under Section 80C, exempts interest accrual, and exempts the maturity amount. At maximum contributions for the full lock-in, a single PPF account compounds to roughly ₹40.7 lakh — with ₹18.18 lakh of that being tax-free interest on ₹22.5 lakh of contributions.

The 15-year lock-in is the defining trade-off. Partial withdrawals from year 7 and the loan facility from year 3-6 provide limited access to funds before maturity, but PPF is fundamentally a long-horizon instrument and shouldn't replace an emergency fund or short-term savings goals. For investors comfortable with the lock-in, the EEE tax treatment combined with the sovereign guarantee makes PPF one of the cleanest long-term compounding vehicles available to Indian savers.

The next read in this pillar covers Sukanya Samriddhi Yojana — the girl-child-specific scheme that operates similarly to PPF but pays 8.2%. For the workplace-linked sibling that handles the same EEE treatment but through employer contributions, see Employee Provident Fund (EPF).

Sources

• India Post, Public Provident Fund (PPF) — indiapost.gov.in/Financial/Pages/Content/PPF.aspx
• Ministry of Finance, Department of Economic Affairs, Small Savings Schemes Quarterly Rate Notifications — dea.gov.in
• Reserve Bank of India, Master Direction on Small Savings — rbi.org.in
• Income Tax Department of India, Section 10(11) and Section 80C — incometax.gov.in
• PFRDA, PPF vs NPS comparison resources — pfrda.org.in