PPF Calculator
Estimate your Public Provident Fund maturity value across a 15-year term, year by year.
The government reviews the PPF rate every quarter, so a 15-year projection at today's rate is an estimate, not a guarantee. See our Disclaimer.
Last reviewed: — rate confirmed for July–September 2026; worked example re-checked.
The formula
PPF interest is compounded annually. This calculator assumes the full annual contribution is made at the start of each year, then adds interest on the resulting balance at year-end, repeated for the full tenure — a standard simplification used by most PPF calculators.
Worked example
₹1,50,000 invested every year for 15 years at 7.1% p.a.: maturity ≈ ₹40.68 lakh, against ₹22.5 lakh invested — interest earned ≈ ₹18.18 lakh.
Current PPF interest rate
As of the July–September 2026 quarter, the PPF rate is 7.1% p.a., set by the Ministry of Finance and reviewed every quarter (it has in fact stayed at 7.1% since April 2020). Since the rate can change in future quarters, a 15-year projection at today's rate is an estimate — check the current rate at the official source before relying on this for planning.
Method and sources
The deposit limits (₹500 to ₹1,50,000 a year) and the 15-year term follow the Public Provident Fund Scheme, 2019. The interest rate is notified each quarter by the Department of Economic Affairs, Ministry of Finance; the 7.1% shown here was announced on 30 June 2026 for July–September 2026. The maturity value is computed year by year as described above, and the worked example was recalculated independently when this page was last reviewed.
Limitations
Real PPF interest is calculated monthly on the lowest balance between the 5th and the end of each month, not once a year on a lump-sum deposit — depositing after the 5th of a month costs you that month's interest on that amount. This calculator uses the simplified start-of-year assumption above, which is accurate for a single deposit made on or before April 5th each year, and approximate otherwise. It also doesn't model partial withdrawals, loans against the account, or extensions beyond 15 years in 5-year blocks.
Limits on the inputs
The annual investment must be between ₹500 and ₹1,50,000, the tenure at least 15 years, and no more than 100 years. A tenure above 100 years, or values that are too large to calculate, show an error message instead of a result.
More worked examples
Same rate, smaller deposits: ₹50,000 a year for 15 years at 7.1% gives 13,56,069.74 on 7,50,000 invested, so interest is 6,06,069.74. At the minimum of ₹500 a year the result is 13,560.70.
Extending the account and contributing throughout: ₹1,50,000 a year at 7.1% for 20 years gives 66,58,288.17 on 30,00,000 invested, and for 25 years it gives 1,03,08,014.97 on 37,50,000.
How much the rate matters
| ₹60,000 a year, 15 years | Maturity value |
|---|---|
| 6.0% | 14,80,351.68 |
| 7.1% | 16,27,283.69 |
| 8.0% | 17,59,456.98 |
What the tool checks
- The annual investment must be from ₹500 to ₹1,50,000. Otherwise it shows "Annual investment must be between ₹500 and ₹1,50,000."
- The tenure must be at least 15 years: 14 years shows "PPF has a minimum tenure of 15 years." The rate must be above zero, and a rate of 0 shows the same message. A tenure over 100 shows "Enter a tenure of 100 years or less."
- The rate box starts at 7.1 and you can change it. Enter whole years for the tenure.
- Results are plain numbers with two decimals, with no currency sign or separators.
Monthly deposits
The calculator treats the annual amount as one deposit made at the start of each year. If you actually pay ₹5,000 a month, the money arrives later in the year, so the real interest can be lower than the figure shown.
Guide
- FD vs RD vs PPF: How Each Compounds — How each of the three compounds and gets its rate, and what the calculators simplify. A comparison of mechanics, not a ranking.
Frequently asked questions
Why is the maturity higher than what I get from just adding up the interest each year?
Because PPF compounds annually — each year's interest becomes part of the balance that itself earns interest the following year, so growth accelerates over the 15-year term rather than staying linear.
Can I withdraw money before 15 years?
Partial withdrawals are allowed from the 7th year onward, and loans against the balance from the 3rd year, both within limits set by PPF rules. This calculator only estimates the maturity value assuming no withdrawals.
What happens after 15 years?
You can withdraw the full maturity value, or extend the account in blocks of 5 years, with or without making further contributions. This calculator only estimates the value at the end of the initial term you enter.
Is there a maximum tenure I can enter?
Yes, 100 years. PPF accounts mature at 15 years and can be extended in five-year blocks, so a tenure of 15 to about 50 years covers realistic cases. Anything above 100 years shows an error.
How do I model an extension after 15 years?
Enter the longer tenure. 20 years models one 5-year extension in which you keep contributing the same amount, and 25 years models two. The tool does not model an extension without contributions.
Can I change the interest rate?
Yes. It starts at 7.1% and you can type any rate above zero. The government can change the rate each quarter, so try a lower one to see the effect: at 6% the ₹60,000-a-year example matures at 14,80,351.68 instead of 16,27,283.69.
What is the smallest deposit the tool accepts?
₹500 a year. Below that, or above ₹1,50,000, you see the investment-limit message instead of a result.