About FD Calculator
Calculate the maturity value and interest earned on a Fixed Deposit (FD). Enter your deposit, rate, and tenure to see how much your money grows with compound interest.
How to Use
- Enter the deposit amount (principal).
- Enter the annual interest rate offered by your bank.
- Enter the tenure and the compounding frequency (usually quarterly for FDs).
- See the maturity amount and the total interest earned.
Why Use This Tool?
- Accurate — built on precise, well-tested mathematical formulas.
- Instant — all calculations happen client-side for zero latency.
- Private — no data is sent to any server; your information stays on your device.
- Free — no sign-up, no limits, no hidden costs.
Frequently Asked Questions
How is FD interest calculated?
Most banks compound FD interest quarterly using A = P × (1 + r/n)^(n×t), where P is the principal, r the annual rate, n the number of compounding periods per year (4 for quarterly), and t the tenure in years.
Is FD interest taxable?
Yes. FD interest is fully taxable as 'income from other sources' at your income-tax slab. Banks deduct TDS if interest across your FDs exceeds ₹40,000 in a year (₹50,000 for senior citizens).
What is the difference between an FD and an RD?
An FD is a one-time lump-sum deposit; a Recurring Deposit (RD) is a fixed amount deposited every month. Use the RD calculator if you plan to invest monthly instead.
How do I calculate FD interest manually?
Use A = P × (1 + r/n)^(n×t): P is the principal, r the annual rate as a decimal, n the compounding periods per year (4 for quarterly) and t the tenure in years. For example, ₹1,00,000 at 6.5% compounded quarterly for 1 year = 1,00,000 × (1 + 0.065/4)^4 ≈ ₹1,06,660, so the interest is about ₹6,660.