# PPF Calculator – Public Provident Fund

URL: https://speedycalculator.com/calculators/finance/ppf/
Last updated: 2026-10-25

> The PPF calculator works out the maturity value of a Public Provident Fund account from your yearly deposit (₹500 to ₹1.5 lakh), the interest rate (7.1% p.a.) and the term (15 years, extendable in 5-year blocks).

## Inputs

- Yearly investment
- Interest rate (%)
- Time period (years)

## Results

- Total investment
- Maturity value
- Total interest

## Formula

```
Maturity = deposit × ((1 + r)^n − 1) ÷ r × (1 + r) (deposits at the start of each year, interest compounded yearly)
Total investment = deposit × years
```

## Explanation

PPF is fully tax-free (EEE): deposits qualify for 80C (old regime), and interest and maturity are exempt. Deposit before the 5th of the month (or in April for the year) to earn interest for that month.

### How to use the PPF Calculator – Public Provident Fund

- **Yearly investment**
- **Interest rate**
- **Time period**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Enter the yearly investment, interest rate and number of years.

### Tips

- Figures use the latest published rates; government scheme rates are revised every quarter.
- Choose between the old and new tax regimes carefully – deductions only count in the old regime.
- Keep proofs of investments and rent for your employer and the tax return.
- Use the official portal of each scheme for exact maturity values.

### Common mistakes to avoid

- Assuming scheme interest rates are fixed for the whole term.
- Forgetting tax on interest from fixed and recurring deposits.
- Missing the yearly minimum deposit on PPF or Sukanya Samriddhi accounts.

### Inputs explained

FieldWhat to enterYearly investmentAmount in ₹Interest rateIn %Time periodIn years

### What each result means

- **Total investment** = min([Yearly investment], 150000)×[Time period]
- **Maturity value** = fvc([Interest rate]÷100, [Time period], 0, min([Yearly investment], 150000), 1)
- **Total interest** = [Maturity value] - [Total investment]

### Example values

How the main result changes when **Yearly investment** changes and everything else stays at the example values above:

Yearly investmentMaturity value75,0002,034,104.61112,5003,051,156.92150,0004,068,209.22187,5004,068,209.22225,0004,068,209.22300,0004,068,209.22

## Worked example

Inputs — Yearly investment: ₹150,000; Interest rate: 7.1 %; Time period: 15 years.

Results — Total investment = ₹2,250,000.00; **Maturity value = ₹4,068,209.22**; Total interest = ₹1,818,209.22.

## FAQ

**What is the PPF interest rate?**
7.1% p.a. in recent quarters, compounded yearly.

**How much can I invest in PPF?**
₹500 to ₹1.5 lakh per financial year.

**What is the PPF lock-in?**
15 years, with partial withdrawals from year 7 and extensions in 5-year blocks.

**What formula does the PPF Calculator – Public Provident Fund use?**
Maturity = deposit × ((1 + r)^n − 1) ÷ r × (1 + r) (deposits at the start of each year, interest compounded yearly).


## Sources

- [National Savings Institute – Small savings schemes](https://www.nsiindia.gov.in/)