FD Calculator
Calculate the maturity amount and interest earned on your Fixed Deposit (FD) investments.
Growth Over Time
| Period | Invested | Balance | Interest Earned | Real Value |
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How Fixed Deposits compound
Most banks compound Fixed Deposit interest quarterly. This means every three months, the interest you have earned is added to your principal, and in the next quarter, you earn interest on that new, larger amount.
Because FDs are extremely safe and guarantee your return, their interest rates are generally lower than market-linked investments (like equity mutual funds). To see how an FD's return holds up against rising prices, click Load in Timeline Simulator and adjust the inflation rate.
The FD Math Formula
The maturity amount of a cumulative Fixed Deposit is calculated using the compound interest formula:
A = P × (1 + r/n)^(n × t)
- A is the maturity amount
- P is the principal deposit amount
- r is the annual interest rate (in decimal)
- n is the number of times interest is compounded per year (e.g., 4 for quarterly)
- t is the tenure in years
For example, if you invest ₹100,000 at 7% p.a. for 5 years compounded quarterly, the math is: 100,000 × (1 + 0.07/4)^(4 × 5) = ₹141,477.