Calculating your maturity value is straightforward once you know the PPF formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the PPF Calculator.
What is PPF?
The PPF calculation tells you your maturity value from a few simple inputs. The figure you are solving for here is the maturity value, expressed in INR.
The PPF formula
This calculation combines several inputs through a multi-step method rather than a single one-line formula. Enter the values below and the calculator resolves each step in order. The inputs it needs are:
- Yearly investment — a money amount. Example: ₹1,50,000.
- Interest rate (p.a.) — a percentage, such as an annual rate. Example: 7.1%.
- Time period — a value you set on the slider. Example: 15 years.
How to calculate it step by step
- Write down the yearly investment (for example, ₹1,50,000).
- Write down the interest rate (p.a.) (for example, 7.1%).
- Note the time period (for example, 15 years).
- Apply the formula above to get your maturity value.
- Double-check the result with the PPF Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Yearly investment | ₹1,50,000 |
| Interest rate (p.a.) | 7.1% |
| Time period | 15 years |
| Maturity value | ₹40,68,209 |
| Total invested | ₹22,50,000 |
| Total interest | ₹18,18,209 |
With yearly investment of ₹1,50,000, interest rate (p.a.) of 7.1% and time period of 15 years, the maturity value works out to ₹40,68,209.
Example 2
With yearly investment of ₹75,000, interest rate (p.a.) of 7.1% and time period of 15 years, the maturity value works out to ₹20,34,105.
| Result | Value |
|---|---|
| Maturity value | ₹20,34,105 |
| Total invested | ₹11,25,000 |
| Total interest | ₹9,09,105 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
- Annual rates must be converted to the period you are calculating for (for example, divide an annual rate by 12 for a monthly figure).
Prefer not to do the maths by hand? — the PPF Calculator does it instantly, for free, with the formula and a worked example built in.
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