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How FD Interest Is Calculated

A fixed deposit calculation depends on the principal, interest rate, tenure and the compounding method specified by the deposit product. The exact maturity value should always be checked against the institution's terms.

The basic variables

Principal is the amount deposited. The interest rate is the stated annual rate. Tenure is the time for which the deposit is held. Compounding frequency determines how often interest is added to the balance for the calculation.

Compound interest concept

When interest is added to the principal and subsequently earns interest itself, the balance grows through compounding. A commonly used compound-interest expression is A = P(1 + r/n)^(nt), although actual deposit products can use specific conventions.

Example

Suppose ₹1,00,000 is placed in a deposit at an assumed annual rate of 7% for 5 years with a specified compounding convention. The calculator can estimate the maturity value based on the inputs.

Tax considerations

Interest income may have tax implications depending on your circumstances and applicable rules. A calculator estimate should not be treated as a tax determination.

Check the maturity amount

Use the FD calculator to experiment with principal, rate, tenure, tax and inflation assumptions.

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This guide is for educational purposes only. Calculator results are estimates based on the inputs and assumptions you provide and should not be treated as guaranteed returns or personalized financial advice.