FreeToolStation

FD Calculator

Maturity value and interest on a fixed deposit.

Finance Calculators Free, no sign-up Runs in your browser

Optional. Many countries tax FD interest at your income tax rate.

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Maturity amount
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Interest earned
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After tax
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Effective annual rate
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If it were simple interest
Year by year
YearOpeningInterestClosing

About the FD Calculator

FD Calculator works out what a fixed deposit matures at. The key input is the compounding frequency, and the reason it matters is that most banks compound fixed deposit interest quarterly while quoting a plain annual rate. Quarterly compounding at 7.5% is really 7.71% a year, and over five years that difference is substantial.

The simple-interest comparison is there to make the point concrete. The same deposit at the same quoted rate for the same term produces a visibly smaller amount without compounding, and the gap is the compounding. Some deposit products genuinely do pay simple interest, or pay the interest out rather than reinvesting it, so the comparison is a real choice rather than a demonstration.

Tax is an optional input because in most countries fixed deposit interest is taxed as ordinary income, often with tax deducted at source. The after-tax figure uses whatever rate you enter; it does not try to guess your bracket, your allowances or the rules where you live.

This is arithmetic, not financial advice. It tells you what the numbers do; it cannot tell you whether a decision is right for your circumstances. Fees, taxes and local rules vary, so check anything that matters against the actual offer and speak to someone qualified before committing.

Everything is worked out inside your browser. Nothing you enter is uploaded, logged or stored, which matters for the financial calculators in particular: the figures you put into them are nobody else's business.

How to use the FD Calculator

  1. Choose term in and compoundedThe fields below change to match what you pick, so only the figures that matter to your case are asked for.
  2. Enter deposit amount, interest rate (% a year) and termDecimals are fine, and thousands separators are accepted and ignored.
  3. Read the maturity amount, interest earned and after taxThe figures update as you type. The Calculate button is there if you would rather press something, but nothing waits for it.
  4. Copy or check the resultCopy the summary with the copy button, or open the table to check it row by row.

Features

  • Shows maturity amount, interest earned, after tax, effective annual rate and if it were simple interest together, so you are not running it twice
  • Full year by year you can open and check
  • Updates as you type, with no button to press and no page reload
  • Copy the result in one click
  • Free, no sign-up, and it runs entirely in your browser

Who uses this tool

The fd calculator is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:

  • Checking a bank's quoted maturity amount
  • Comparing quarterly compounding with monthly
  • Working out the real return after tax on the interest
  • Comparing an FD against a debt fund or savings account

Frequently asked questions

Which compounding frequency do banks use?

Quarterly is the usual default for fixed deposits. Some products pay monthly, and some pay the interest out instead of compounding it, which is closer to simple interest.

What is the effective annual rate?

The rate that would give the same result compounded once a year. It is higher than the quoted rate whenever compounding happens more often, and it is the figure to compare between products.

Does it handle premature withdrawal?

No. Breaking a deposit early usually means a lower rate plus a penalty, and the terms differ by bank. Recalculate with the penalty rate to see the effect.

If the fd calculator is not quite what you need, these other free tools solve closely related problems, and there are 38 more in finance calculators.

RD Calculator

Recurring deposit maturity value and interest earned.

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Simple Interest Calculator

Interest on the original amount only, with the formula shown step by step.

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PPF Calculator

PPF maturity value with yearly interest credits.

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Checked and rebuilt on 2026-10-14. The method this calculator uses is described in the section above, and corrections go through the contact page.