The maturity amount of an FD is determined by using the compound interest formula, as most banks compound interest quarterly. Below is the formula used:
A = P (1 + r/n)^(n*t)
where:
- A = Maturity amount
- P = Principal amount (Initial deposit)
- r = Annual interest rate (in decimal, e.g., 6.6% = 0.066)
- n = Number of times interest is compounded per year (i.e., if interest is compounded quarterly, n=4)
- t = Tenure of the FD in years
Let us understand it with an example. When an investor invests ₹1,00,000 in an FD at an interest rate of 6.60% per annum for 3 years, in which the interest is compounded quarterly, they get a total amount of ~₹1,21,699 at maturity*.
*The estimated maturity amount is calculated using ICICI Bank’s FD Calculator. Final values may vary subject to ICICI Bank’s policies.