FD Calculator

Calculate Fixed Deposit maturity amount and interest.

Last updated: 14 August 2026

Processed locally — your files are not uploaded to any server.

Comprehensive Guide & Specifications

Everything you need to know about using FD Calculator effectively.

What is FD Calculator and Why Use It?

A fixed deposit pays an agreed rate on a lump sum for a set term, and this computes what it matures to: the principal compounded at that rate for the full period, at the frequency the bank applies. It answers the practical question people have while comparing offers — whether the extra quarter of a percent from one bank is worth the longer lock-in of another — by turning both into a single maturity figure and a total interest number. Enter the amount, the offered rate and the term. Three things shift the real outcome away from the number shown. Interest on fixed deposits is generally taxable and tax may be deducted at source, so the amount received can be lower. Breaking a deposit early usually incurs a penalty and a reduced effective rate. And senior citizen rates are often higher, so use the rate that actually applies to you.

Step-by-Step Instructions

1
Enter your initial fixed deposit investment principal amount.
2
Specify the annual interest rate offered and your investment tenure.
3
View total interest earned, maturity value, and annual yield breakdown.

Formula / Calculations Explained

Fixed Deposit Compound Interest Formula

A = P × (1 + r / n)^(n × t)

AMaturity amount at the end of tenure

PPrincipal deposit amount

rAnnual interest rate (in decimal form)

nCompounding frequency per year (quarterly = 4)

tTenure of the deposit in years

Fixed deposits compound interest quarterly in most financial institutions. The principal accumulates interest, which in turn earns additional interest each quarter until maturity.

Important Considerations

Interest on fixed deposits is generally taxable, and tax may be deducted at source, so the amount received can be below the figure shown.
Breaking a deposit early usually means a penalty and a lower effective rate.
Senior citizen rates are often higher — use the rate that actually applies to you.

Frequently Asked Questions

How is fixed deposit maturity amount calculated?▼

Fixed deposit maturity is calculated using quarterly compounding interest where interest earned every quarter is added to the principal to generate future interest.

Is this online FD calculator free and private?▼

Yes, our FD calculator is 100% free, runs entirely in your web browser, and never transmits your financial figures or personal details to any server.

Does compounding frequency affect my FD returns?▼

Yes, more frequent compounding (such as quarterly versus annual compounding) results in a slightly higher effective annual yield on your deposit.

Benchmark Reference Data

Standard FD Returns Comparison Table (₹100,000 Principal)

Calculated with standard quarterly compounding (A = P(1 + r/4)^4t). See maturity amounts and net interest earned across benchmark interest rates and deposit tenures.

Standard Fixed Deposit Returns for ₹100,000 across 1, 3, and 5-year tenures
Interest Rate (p.a.)	1-Year Maturity (Interest)	3-Year Maturity (Interest)	5-Year Maturity (Interest)
6.50% p.a.	₹1,06,660(+₹6,660)	₹1,21,341(+₹21,341)	₹1,38,042(+₹38,042)
7.00% p.a.	₹1,07,186(+₹7,186)	₹1,23,144(+₹23,144)	₹1,41,478(+₹41,478)
7.50% p.a.	₹1,07,714(+₹7,714)	₹1,24,972(+₹24,972)	₹1,44,995(+₹44,995)

Note: Indian banks compute Fixed Deposit interest using quarterly compounding cycles. Senior citizens typically earn an additional 0.50% per annum above standard rates.

Worked example

Example only — not financial advice

This calculator always compounds fixed deposits quarterly. Depositing $100,000 at 7.5% for 3 years — compounded 4 times a year — matures at $124,972, $24,972 of which is interest.

Worked example: $100,000 fixed deposit at 7.5% for 3 years
Example input	Value
Fixed deposit amount	$100,000
Interest rate	7.5% p.a.
Tenure	3 years
Total investment	$100,000
Total interest earned	$24,972
Maturity value	$124,972

These figures illustrate how the FD Calculator computes its result for the example inputs above — they are not a rate offer, a market quote, or a recommendation for your own numbers. Enter your own figures in the calculator above to get a result that applies to you.

Explore companion utilities and free online tools designed to speed up your workflow.

View all in Finance & Calculators