PPF Maturity Calculator
The Public Provident Fund is a long-term, tax-free savings account. A fixed amount is contributed each year, interest is credited annually and compounds, and the whole balance is free of tax at maturity.
Maturity value
$4,068,209.22
- Total invested
- $2,250,000.00
- Interest earned
- $1,818,209.22
- Interest as share
- 44.69%
Values update as you type. This calculator covers the single scenario its formula assumes — see Common Mistakes for what it leaves out.
The formula this calculator uses
Maturity = C x ((1 + r)^n - 1) / r x (1 + r)
- C
- Yearly contribution
- r
- Annual interest rate as a decimal
- n
- Number of years
How to check the result by hand
- 1
Total up the contributions
Multiply the yearly contribution by the number of years to see how much of your own money went in.
- 2
Apply the annuity factor
Raise one plus the rate to the number of years, subtract one and divide by the rate to get the ordinary annuity factor.
- 3
Adjust for contributions at the start
Multiply the factor by one plus the rate, because each yearly contribution is made at the beginning of the year.
- 4
Multiply by the contribution
Multiplying the adjusted factor by the yearly contribution gives the maturity value.
- 5
Split principal from interest
Subtract the total contributions from the maturity value to see the interest earned and its share of the final balance.
For worked examples, common mistakes and the limits of this formula, read the full How To Calculate PPF Maturity page.