PPF Calculator
Project a PPF balance year by year using an editable, clearly-marked interest-rate assumption — statutory rates and rules are never hardcoded here.
Estimated Maturity Value
₹40,68,209
assumed 7.1% p.a., compounded annually
Total contributions
₹22,50,000
Estimated interest
₹18,18,209
- Total Contributions
- Est. Interest
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Rates/rules may change. PPF interest rates, tenure and contribution limits are set by the Government of India and reviewed every quarter. The default 7.1% matches the rate the Ministry of Finance notified for the October–December 2026 quarter (last checked October 2026), but it is an editable assumption, not a live feed. Verify the current figure with the National Savings Institute or your bank/post office before relying on it.
Balance growth year by year
- Balance
- Contributions
Year-by-year balance
| Year | Contribution | Interest | Balance |
|---|---|---|---|
| 1 | ₹1,50,000 | ₹10,650 | ₹1,60,650 |
| 2 | ₹1,50,000 | ₹22,056 | ₹3,32,706 |
| 3 | ₹1,50,000 | ₹34,272 | ₹5,16,978 |
| 4 | ₹1,50,000 | ₹47,355 | ₹7,14,334 |
| 5 | ₹1,50,000 | ₹61,368 | ₹9,25,701 |
| 6 | ₹1,50,000 | ₹76,375 | ₹11,52,076 |
| 7 | ₹1,50,000 | ₹92,447 | ₹13,94,524 |
| 8 | ₹1,50,000 | ₹1,09,661 | ₹16,54,185 |
| 9 | ₹1,50,000 | ₹1,28,097 | ₹19,32,282 |
| 10 | ₹1,50,000 | ₹1,47,842 | ₹22,30,124 |
| 11 | ₹1,50,000 | ₹1,68,989 | ₹25,49,113 |
| 12 | ₹1,50,000 | ₹1,91,637 | ₹28,90,750 |
| 13 | ₹1,50,000 | ₹2,15,893 | ₹32,56,643 |
| 14 | ₹1,50,000 | ₹2,41,872 | ₹36,48,515 |
| 15 | ₹1,50,000 | ₹2,69,695 | ₹40,68,209 |
Example calculation
Contributing ₹1,50,000 a year for 15 years at an assumed 7.1% gives an estimated maturity of ₹40,68,209, of which ₹18,18,209 is interest. Always confirm the current statutory rate before relying on this figure.
How this PPF calculator works
The Public Provident Fund compounds interest once a year. Each year we add your contribution to the balance and then apply the assumed annual interest rate. The rate, tenure, and contribution limit are editable assumptions stored in a central configuration — they are not official current figures.
The compounding logic
For each year:
balance = (previous balance + contribution) × (1 + rate)
Interest is calculated on the running balance and added back, so later years benefit from interest earned in earlier years.
Worked example: ₹1 lakh a year for 15 years
Assume ₹1,00,000 deposited at the start of every year and an illustrative rate of 7% (edit this to the current notified rate).
- Year 1:
(0 + 1,00,000) × 1.07 = ₹1,07,000 - Year 2:
(1,07,000 + 1,00,000) × 1.07 = ₹2,21,490 - Year 3:
(2,21,490 + 1,00,000) × 1.07 = ₹3,43,994
Continuing for the full 15-year term gives a balance of roughly ₹26.9 lakh on ₹15 lakh of deposits — about ₹11.9 lakh of interest. In the final year alone the interest is about ₹1.76 lakh, more than the year's contribution, which is the compounding effect at work.
PPF scheme basics to know
These features have been stable for many years but are set by government notification, so confirm them before acting:
- Tenure: a 15-year maturity from the end of the financial year of opening, extendable in 5-year blocks.
- Contribution range: a minimum annual deposit is required to keep the account active, and there is an annual ceiling on deposits — amounts above the ceiling earn no interest.
- Interest timing: interest is worked out monthly on the lowest balance between the 5th and the last day of the month and credited once a year — so depositing before the 5th earns that month's interest.
- Rate resets: the government announces the rate every quarter.
- Tax status: PPF has historically enjoyed exempt-exempt-exempt treatment; see our tax guide and verify against current law.
- Liquidity: partial withdrawals and loans against the balance are permitted only from specified years and within limits.
Read the full What is PPF guide for detail.
Limitations of this projection
The calculator holds one rate constant for 15+ years, whereas the actual rate is reset quarterly and has moved materially over past decades. It assumes a single start-of-year deposit; real deposits spread through the year earn slightly less. It does not model extensions, partial withdrawals, loans, or the tax benefit on deposits. Use it to understand how a disciplined PPF habit compounds, and compare against FD or SIP alternatives — not as a prediction of your maturity amount.
Assumptions & what this calculator does not include
- •The interest rate is an editable assumption, not the official current rate.
- •Contribution is assumed once per year at the start of the year.
- •Statutory rules on tenure, limits, and withdrawals change over time.
- •Verify all current PPF rules with primary sources before deciding.
Frequently asked questions
Methodology last reviewed: 16 October 2026
How we maintain this page: the formula is covered by automated tests, default rates that depend on government notification are re-checked when a revision is announced, and the content and links are re-read when a reader reports an issue or the page is edited. See our Calculator Methodology and Corrections Policy.