FD Calculator

About the FD calculator

A fixed deposit (FD) is a time-bound deposit where the interest rate is agreed upfront and the maturity value can be estimated with compounding. This calculator projects the maturity amount, interest earned, and effective annual rate for a chosen principal, rate, tenure, and compounding frequency.

Use it when you are planning short-term goals, parking emergency reserves beyond a savings account, or comparing bank and NBFC deposit offers. It is especially useful for Indian households that want a predictable rupee amount before committing to a tenure.

The projection is an estimate based on the inputs you enter. It does not account for tax deducted at source, your final slab-rate tax liability, premature withdrawal penalties, or changes in bank-level risk.

1. 1Enter the principal: Add the amount you plan to place in the fixed deposit. This is the starting balance that earns interest.
2. 2Set the annual interest rate: Use the quoted FD rate in percent per annum. The calculator treats this as the nominal annual rate.
3. 3Choose the tenure: Select how many years the deposit remains booked. Longer tenures give compounding more time, but may increase reinvestment and liquidity risk.
4. 4Select compounding frequency: Choose monthly, quarterly, half-yearly, or yearly compounding based on the deposit terms. Most Indian bank FDs compound quarterly.
5. 5Review maturity and interest: Compare the maturity amount, total interest earned, effective annual rate, and year-wise growth before deciding whether the FD fits your goal.

How is FD interest calculated?

A = P × (1 + r / n)^(n × t)

The calculator also derives the effective annual rate from the same compounding frequency: EAR = ((1 + r / n)^n − 1) × 100.