About the FD Calculator
A Fixed Deposit (FD) is a lump-sum investment with a bank or NBFC that earns a fixed interest rate for a fixed tenure. This calculator works out the maturity value and total interest earned based on your principal, rate, tenure and compounding frequency.
How it works
- It uses the standard compound interest formula: FV = P × (1 + r/n)^(n×t), where P is the principal, r is the annual interest rate, n is the number of times interest compounds per year, and t is the tenure in years.
- Most Indian banks compound FD interest quarterly by default, which is the calculator's default setting — you can switch to half-yearly, annual or monthly to match your bank's terms.
Assumptions and behaviour
- Assumes the interest rate stays fixed for the entire tenure, as is standard for a regular (non-floating) FD.
- Assumes cumulative interest (reinvested and compounded), not a payout FD where interest is paid out periodically instead of compounding.
- Compounding frequency options match how most Indian banks structure their FD schemes.
Limitations
- Doesn't account for TDS (tax deducted at source) on FD interest, which banks deduct once interest crosses the annual threshold.
- Doesn't model premature withdrawal penalties — this shows the value only if held to full maturity.
- Senior citizen FD rates, which are typically higher, aren't automatically applied — enter your actual offered rate.
Privacy
The calculation runs entirely in your browser. Nothing is uploaded or stored.
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