FD Maturity Calculator
A fixed deposit pays a headline rate that is not quite what you earn, because interest is compounded during the year. This calculator shows the maturity value, the interest earned and the effective annual yield for any compounding frequency.
Maturity value
$142,174.67
- Principal
- $100,000.00
- Interest earned
- $42,174.67
- Effective annual yield
- 7.29%
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 = P x (1 + r / n)^(n x t)
- P
- Deposit principal
- r
- Annual interest rate as a decimal
- n
- Compounding periods per year
- t
- Tenure in years
How to check the result by hand
- 1
Find the periodic rate
Divide the annual rate by the number of compounding periods. Quarterly compounding means four periods and a rate of one quarter of the annual figure.
- 2
Count the periods
Multiply the compounding frequency by the tenure in years to get the total number of compounding periods.
- 3
Compound the principal
Raise one plus the periodic rate to the number of periods and multiply by the principal to get the maturity value.
- 4
Subtract the principal
The interest earned is the maturity value minus the amount you deposited.
- 5
Compute the effective yield
Raise one plus the periodic rate to the frequency and subtract one to see the true annual return behind the quoted rate.
For worked examples, common mistakes and the limits of this formula, read the full How To Calculate FD Maturity page.