Minimum ₹500, maximum ₹1,50,000 per financial year.
Official rate for the October–December 2026 quarter: 7.1%. Compounded yearly.
PPF matures after 15 years and can be extended in 5-year blocks.
Quick examples
Depositing ₹1,00,000 a year for 15 years at 7.1%.
What each result means
Total deposited
What it is: All yearly deposits added together.
Your value: ₹15,00,000
Your own money.
Total interest
What it is: Interest earned over the full term.
Your value: ₹12,12,139
PPF interest is tax-free under current rules.
Maturity value
What it is: Deposits plus interest at the end of the term.
Your value: ₹27,12,139
The headline projection.
Growth multiple
What it is: Maturity value divided by total deposited.
Your value: 1.81×
How many times your money grew.
Year-by-year breakdown
| Year | Deposit (₹) | Interest this year (₹) | Total deposited (₹) | Balance at year end (₹) |
|---|---|---|---|---|
| 1 | ₹1,00,000 | ₹7,100 | ₹1,00,000 | ₹1,07,100 |
| 2 | ₹1,00,000 | ₹14,704 | ₹2,00,000 | ₹2,21,804 |
| 3 | ₹1,00,000 | ₹22,848 | ₹3,00,000 | ₹3,44,652 |
Each row is one financial year. The deposit is assumed to be made before the 5th of April, so it earns interest for the whole year.
Showing the first 3 of 15 years. Want charts, formulas and the full schedule? Get the detailed PDF.
What this calculator does
The Public Provident Fund (PPF) is a 15-year government savings scheme. This calculator adds your yearly deposit at the start of each financial year and grows the balance at the official interest rate, compounded once a year.
What your result means
Because interest is added every year and then earns interest itself, the balance grows faster in later years. Depositing early in the financial year — before the 5th of April — earns interest for all twelve months.
Formula
1. PPF maturity value (yearly deposit at the start of each year)
Symbols
- M
- Maturity value (₹)
- D
- Yearly deposit (₹)
- r
- Annual interest rate (decimal)
- n
- Number of years
Why this formula works
Each deposit compounds yearly until maturity. Adding all deposits gives a geometric series; the extra × (1 + r) is because each deposit is made at the start of the year.
Unit check
₹ = ₹ × (no unit). ✓
Worked example
D = ₹1,50,000, r = 7.1% , n = 15: M ≈ ₹40,68,209.
Common mistakes
Treating the rate as monthly compounding. Forgetting deposits made after the 5th of a month lose that month's interest.
Working for your numbers
- r = 7.1% = 0.0710
- Growth factor [((1 + r)ⁿ − 1) ÷ r] × (1 + r) = 27.1214
- M = ₹1,00,000 × 27.1214 = ₹27,12,139
- Interest = ₹27,12,139 − ₹15,00,000 = ₹12,12,139
Frequently asked questions
Is the 7.1% rate fixed for my whole PPF term?
The government reviews small savings rates every quarter. 7.1% is the rate notified for the October–December 2026 quarter. You can change the rate field to see how a different future rate would change the result.
Is PPF interest taxable?
Under current rules PPF is in the exempt category: deposits qualify under Section 80C in the old tax regime, and interest and maturity amounts are tax-free. Check the latest rules before filing.
Can I withdraw before 15 years?
Partial withdrawals are allowed from the 7th financial year, within limits. Premature closure is allowed only in specific cases after 5 years.
Does this calculator tell me whether to invest?
No. It is an educational projection using the official rate and standard scheme rules. It does not consider your goals, taxes or other options. For a personal decision, speak to a SEBI-registered investment adviser.
Symbols and assumptions
- D
- Yearly deposit (₹)
- r
- Annual rate (%)
- n
- Years
- The deposit is made once a year, before the 5th of April.
- The rate you enter stays the same for the whole term — in reality it is reviewed every quarter.
- Interest is credited once a year, at the end of the financial year.
- Figures are in Indian Rupees (₹).
Sources and review
Reviewed 2026-10-05 · Next review 2026-12-31
- National Savings Institute — small savings schemes and current rates, Ministry of Finance
- India Post — Post Office Savings Schemes
- Department of Economic Affairs, Ministry of Finance — small savings rate notifications
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Related Calculators
How it works
15-year government scheme with EEE tax status. Interest is compounded annually.
The formula
Standard PPF compounding- P
- Annual Deposit
- r
- Current PPF Rate
Worked example
₹1.5L annual deposit for 15 years builds a massive tax-free corpus.
Pro tips
- Invest before the 5th of the month to earn interest for that month.
Common mistakes
- Not utilizing the full ₹1.5L 80C limit.
Go deeper
Concepts to explore
Related guides
Institutional grade calculations are illustrative and for educational wealth architecture. Results do not constitute investment advice.