Formula & Mathematical Methodology: PPF Beginning-of-Year Annual Compounding Formula
- Deposit: Annual deposit made on or before April 5
- r: Annual notified PPF interest rate (e.g., 0.071)
Rounding: Annual compounding rounded to nearest rupee.
Calculate 15-year PPF maturity balance, total principal deposited, and tax-exempt compounded interest.
| Year | Opening Balance | Annual Deposit | Interest Earned | Closing Balance |
|---|---|---|---|---|
| Year 1 | ₹0 | ₹1,50,000 | ₹10,650 | ₹1,60,650 |
| Year 2 | ₹1,60,650 | ₹1,50,000 | ₹22,056 | ₹3,32,706 |
| Year 3 | ₹3,32,706 | ₹1,50,000 | ₹34,272 | ₹5,16,978 |
| Year 4 | ₹5,16,978 | ₹1,50,000 | ₹47,355 | ₹7,14,334 |
| Year 5 | ₹7,14,334 | ₹1,50,000 | ₹61,368 | ₹9,25,701 |
| Year 6 | ₹9,25,701 | ₹1,50,000 | ₹76,375 | ₹11,52,076 |
| Year 7 | ₹11,52,076 | ₹1,50,000 | ₹92,447 | ₹13,94,524 |
| Year 8 | ₹13,94,524 | ₹1,50,000 | ₹1,09,661 | ₹16,54,185 |
| Year 9 | ₹16,54,185 | ₹1,50,000 | ₹1,28,097 | ₹19,32,282 |
| Year 10 | ₹19,32,282 | ₹1,50,000 | ₹1,47,842 | ₹22,30,124 |
| Year 11 | ₹22,30,124 | ₹1,50,000 | ₹1,68,989 | ₹25,49,113 |
| Year 12 | ₹25,49,113 | ₹1,50,000 | ₹1,91,637 | ₹28,90,750 |
| Year 13 | ₹28,90,750 | ₹1,50,000 | ₹2,15,893 | ₹32,56,643 |
| Year 14 | ₹32,56,643 | ₹1,50,000 | ₹2,41,872 | ₹36,48,515 |
| Year 15 | ₹36,48,515 | ₹1,50,000 | ₹2,69,695 | ₹40,68,209 |
Rounding: Annual compounding rounded to nearest rupee.
An investor deposits the full ₹1,50,000 Section 80C limit on April 1 every year for 15 years at 7.1% p.a.
PPF interest for each calendar month is calculated on the lowest balance in the account between the close of the 5th day and the last day of that month.
Model your Public Provident Fund (PPF) accumulation over the statutory 15-year lock-in period or 5-year extension blocks using the Ministry of Finance reference rate (7.1% p.a., editable). Whether you are researching public provident fund calculator, ppf maturity calculator, 80c ppf interest, post office ppf calculator, this interactive tool helps you project 15-year (or extended) Public Provident Fund (PPF) maturity corpus and tax-free interest under India’s EEE scheme.
As you adjust Annual PPF Deposit, PPF Annual Interest Rate, Investment Duration, the calculator immediately computes PPF Maturity Balance (₹), Total Principal Deposited (₹), Total Tax-Free Interest (₹), Year-by-Year Account Schedule and updates all three domain-specific SVG charts in real time. Instead of relying on a single static figure, you can inspect the primary domain diagram, component breakdown, and multi-point trajectory curve to see how changing your inputs shifts the final result. Use the Compare (up to 3 scenarios) button to evaluate side-by-side variations before making a decision.
In our benchmark scenario (₹1,50,000/Year PPF Deposit at 7.1% p.a. for 15 Years), Maturity corpus is ₹40,68,209 (₹22.50L principal + ₹18.18L tax-free interest). Keep in mind that assumes annual deposit is credited on or before April 5 of each financial year to earn full-year interest. For related calculations in Finance & Investing, explore EPF Calculator (Employees Provident Fund), SIP Calculator (Systematic Investment Plan), FD & RD Calculator (Fixed & Recurring Deposit), Gratuity Calculator (India).