Fixed Deposit Calculator
Calculate maturity amount and interest earned on your fixed deposit.
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Fixed Deposit Calculator
Use the formula and worked example below to calculate manually.
Overview
A Fixed Deposit (FD) calculator instantly shows the maturity amount and total interest you will earn on a bank FD, based on the principal, interest rate, tenure, and compounding frequency.
How to use this calculator
- Enter the principal (deposit) amount.
- Enter the annual interest rate offered by the bank.
- Set the tenure in years and months.
- Choose the compounding frequency (quarterly is standard for Indian banks).
- Read the maturity amount and total interest earned.
Understanding the inputs & results
Principal
The initial amount you deposit in the FD.
Interest rate (p.a.)
The annual rate of interest offered by the bank on your FD.
Tenure
The duration for which you lock in your deposit.
Compounding frequency
How often the interest is compounded — monthly, quarterly, half-yearly, or annually. Most Indian banks compound quarterly.
Maturity amount
The total amount (principal + interest) you receive when the FD matures.
Total interest
The interest earned over the entire tenure: maturity amount minus principal.
The formula
FD maturity with compounding
A = P × (1 + r/n)^(n×t)
P is the principal, r is the annual rate (÷100), n is the compounding periods per year (4 for quarterly), and t is the tenure in years.
Worked example
₹1,00,000 FD for 3 years at 7% p.a. compounded quarterly.
- r = 0.07, n = 4, t = 3.
- A = 1,00,000 × (1 + 0.07/4)^(4×3) = 1,00,000 × (1.0175)^12 ≈ ₹1,23,144.
- Interest = ₹1,23,144 − ₹1,00,000 = ₹23,144.
✓ ₹1 lakh grows to approximately ₹1.23 lakh after 3 years.
Frequently asked questions
FD rates change frequently. Verify current rates with your bank before investing. This calculator is for planning purposes only.