FD Calculator
Work out the maturity value of a fixed deposit, with the compounding frequency your bank actually uses.
This calculator provides an estimate based on a fixed rate for the full tenure; actual bank terms, premature withdrawal penalties, and TDS may affect your real return. See our Disclaimer.
Last reviewed: — formula, worked examples and TDS thresholds re-checked.
The formula
A = P × (1 + r/(n × 100))^(n × t), where P is the deposit amount, r is the annual interest rate, n is the number of times interest compounds per year, and t is the tenure in years. Interest earned = A − P.
Most Indian bank FDs compound quarterly (n = 4) by default, even though the rate is quoted as an annual figure — check your specific bank's terms if you're not sure.
Worked example
₹1,00,000 at 7% p.a. for 5 years, compounded quarterly (n = 4): A = 1,00,000 × (1 + 0.07/4)^20 ≈ ₹1,41,478. Interest earned ≈ ₹41,478.
The same deposit compounded annually instead (n = 1) gives A ≈ ₹1,40,255 — a smaller number, because interest is credited (and starts earning its own interest) less often.
Method and sources
The maturity value is standard compound interest, using the compounding frequency you choose; the two worked examples above were recalculated independently when this page was last reviewed. Interest rates are never looked up — you enter the rate your bank quotes. The tax-at-source thresholds mentioned below come from Section 194A of the Income Tax Act as amended by the Finance Act 2025.
Limitations
This assumes the interest rate stays fixed for the entire tenure, which is true for a standard cumulative FD but not for products with a floating or step-up rate. It doesn't account for TDS (banks deduct tax at source on FD interest above a threshold) or penalties for breaking the deposit early — check your bank's specific terms for those.
Comparing compounding frequencies
₹1,00,000 at 7% for 5 years: annual compounding gives 1,40,255.17, half-yearly gives 1,41,059.88, quarterly gives 1,41,477.82 and monthly gives 1,41,762.53. Going from annual to monthly adds about ₹1,507 on a ₹1,00,000 deposit.
Tenures with months
The tenure is a number of years and can be a decimal. Six months is 0.5: ₹1,00,000 at 7% quarterly becomes 1,03,530.63. One year and three months is 1.25, giving 1,09,061.66. For a one-year FD at 7%, quarterly compounding gives ₹7,185.90 of interest, while annual compounding gives exactly ₹7,000.
Another example: ₹2,50,000 at 6.5% for 3 years, quarterly, matures at 3,03,351.89, with interest of 53,351.89.
Inputs and output
A rate of 0 is accepted and returns the deposit unchanged. The deposit and tenure must be above zero, and a negative rate shows "Please enter positive values." Results appear as plain numbers with two decimals, without a currency symbol or thousands separators.
Guide
- FD vs RD vs PPF: How Each Compounds — How each of the three compounds and gets its rate, and what the calculators simplify. A comparison of mechanics, not a ranking.
Frequently asked questions
Why does compounding frequency change the result?
More frequent compounding means interest gets added to the principal (and starts earning its own interest) sooner and more often, so a higher compounding frequency produces a slightly larger maturity value for the same quoted annual rate.
Is FD interest taxable?
Yes — FD interest is added to your taxable income and taxed at your slab rate. Banks deduct TDS if the interest earned in a year crosses the applicable threshold, currently ₹50,000 for most individuals and ₹1,00,000 for senior citizens (60+), counted per bank per financial year — these were raised from ₹40,000 and ₹50,000 with effect from 1 April 2025. They are set by the government and can change, so confirm the current figures with your bank or the Income Tax Department.
How do I enter an FD of 18 months?
Enter 1.5 as the tenure. For 15 months enter 1.25 and for 6 months enter 0.5.
Is the maturity value after tax?
No. It is the gross amount before any TDS or income tax on the interest. Banks that deduct TDS will pay out less than this figure.
Does the calculator pick my bank's compounding frequency?
No. You choose it from the list, and it starts on quarterly. If your bank pays interest out instead of compounding it, a cumulative FD figure from this tool does not apply.