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FD Calculator Guide — Fixed Deposit Maturity in India

Learn how fixed deposit interest is calculated in India with quarterly compounding and use our free FD calculator for maturity amount and yield.

By MerQPrime Editorial TeamUpdated 2026-06-20Reviewed 2026-06-20Editorial policy

Fixed deposits (FDs) remain one of the safest savings options in India. Before you lock money for months or years, it helps to know exactly how much you will receive at maturity — including the effect of compounding.

How FD interest works

Most Indian banks compound FD interest quarterly. The formula is:

Maturity = P × (1 + r/n)^(n×t)

  • P = deposit amount
  • r = annual interest rate (as a decimal)
  • n = compounding periods per year (4 for quarterly)
  • t = tenure in years

Example

₹1,00,000 at 7% for 5 years, compounded quarterly:

Maturity ≈ ₹1,41,478 (interest ≈ ₹41,478).

Tax on FD interest

Interest is taxable as income. Banks may deduct TDS when annual interest exceeds ₹40,000 (₹50,000 for senior citizens). Plan accordingly when comparing FD returns to PPF or debt funds.

Try the free FD calculator

Use our FD Calculator to model any amount, rate, tenure and compounding frequency — results update instantly in your browser.

FD Calculator Guide — Fixed Deposit Maturity in India | MerQPrime Tools