FD Calculator
A fixed deposit's maturity is calculated with compound interest, usually compounded quarterly: A = P × (1 + r/4)^(4×t). For example, ₹5,00,000 at 7% for 5 years matures to about ₹7,07,000, earning roughly ₹2,07,000 in interest. FD interest is fully taxable at your income tax slab rate. Enter your deposit details below.
Updated July 2026. Figures for FY 2025-26 (AY 2026-27).
How it is calculated
How FD interest compounds
Most banks compound FD interest quarterly: A = P × (1 + r/4)^(4t), where P is the principal, r is the annual rate, and t is the number of years. Longer tenures and higher rates grow maturity faster.
Tax on FD interest
FD interest is taxable as income from other sources at your slab rate. Banks deduct 10% TDS if interest exceeds ₹40,000 a year (₹1,00,000 for senior citizens). You report and pay any balance when filing.
Worked example. ₹5,00,000 at 7% for 5 years, compounded quarterly, matures to about ₹7,07,000 with roughly ₹2,07,000 interest.
Frequently asked questions
How is FD maturity calculated?
With quarterly compounding: maturity = principal × (1 + annual rate ÷ 4) raised to (4 × years). The maturity minus your deposit is the interest earned.
Is FD interest taxable?
Yes, fully, at your income tax slab rate. It is added to your total income under income from other sources, and banks deduct TDS above the threshold.
What is the TDS threshold on FD interest?
Banks deduct 10% TDS when your FD interest exceeds ₹40,000 in a year, or ₹1,00,000 for senior citizens. Submit Form 15G or 15H if your income is below the taxable limit.
Are FDs a good investment?
FDs are safe and predictable but their post-tax return often trails inflation. They suit emergency funds and short-term goals more than long-term wealth building.
Related calculators
SIP Calculator · PPF Calculator · EMI Calculator · Income Tax Calculator
File your return with a real chartered accountant at a fair, flat price.