FD Calculator

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FD maturity value with quarterly, monthly or cumulative compounding, plus post-tax yield.

Inputs

Currency

Deposit amount

Interest rate (% p.a.)

Tenure (years)

Compounding

Your income tax slab (%)

How to use this calculator: FD Calculator

FD maturity value with quarterly, monthly or cumulative compounding, plus post-tax yield. The example below is calculated by this page's real engine from the displayed inputs.

1Enter the one-time amount you plan to deposit in the fixed deposit account.
2Use the annual interest rate offered by your bank or NBFC. Senior-citizen rates may differ from standard rates.
3Select the FD tenure and available compounding frequency. Banks may compound interest quarterly, monthly or at another interval.
4Review the final maturity amount and total interest earned. Compare the post-tax return with your financial objective before investing.

Input guide and example values

Use values from the same measurement basis and time period. Conditional fields appear only when the related option is selected.

Input	Example value	Why it matters
Currency	₹ Indian Rupee (INR)	Select the option that matches the real installation or scenario.
Deposit amount	500000	Measured or known deposit amount used by the calculation engine.
Interest rate	7.1 % p.a.	Measured or known interest rate used by the calculation engine.
Tenure	5 years	Measured or known tenure used by the calculation engine.
Compounding	Quarterly (bank standard)	Select the option that matches the real installation or scenario.
Your income tax slab	30 %	Measured or known your income tax slab used by the calculation engine.

Formula, derivation and worked example

Indian banks compound cumulative FDs quarterly, so the maturity value exceeds simple interest by a widening margin as tenure grows. Interest is taxable at your slab on an accrual basis each year, and TDS applies above the threshold, so the post-tax yield — not the headline rate — is the number to compare against alternatives.

M = P × (1 + r/n)^(n × t)

Interest = M − P

Effective yield = (1 + r/n)ⁿ − 1

Post-tax interest = Interest × (1 − slab%)

Substitution steps

1. Periodic rate
7.1% / 4
= 1.7750%
2. Periods
4 × 5
= 20.00
3. Maturity
P × (1 + r/n)^(n·t)
= ₹710,873
4. Interest
710,873 − 500,000
= ₹210,873
5. Tax on interest
210,873 × 30%
= ₹63,262

Computed example results

Maturity amount: ₹710,873
Interest earned: ₹210,873
Effective annual yield: 7.29%; Nominal 7.10%
Post-tax interest: ₹147,611; At 30% slab
Post-tax effective return: 5.10%
Benefit over simple interest: ₹33,373

Understanding the result

Read the main result together with supporting checks, assumptions, limits and intermediate values.

For a manual check, repeat the first equation, confirm the units and change one input at a time.

Common mistakes when using FD Calculator

Do not mix units for Interest rate (% p.a.), Tenure (years), Your income tax slab (%). A unit mismatch changes the input magnitude even when the typed number looks reasonable.
Do not leave Currency on the default choice unless that choice matches the real scenario; the selected option can change the calculation path or factor.
Do not replace the displayed M = P × (1 + r/n)^(n × t) relationship with a different convention without also changing the underlying assumptions; compare like-for-like methods when checking the result.
Do not treat Maturity amount = ₹710,873 from the worked example as a universal answer. It belongs to the displayed example inputs and must be recalculated for the actual case.

Next logical calculator

Continue with RD Calculator

Useful next check because both tools use Currency and Interest rate, while RD Calculator answers a different part of the same workflow.

Open RD Calculator

Standards, source trail and limitations

References show the method used. Check the current local edition, amendments and project specification before a regulated decision.

What is a fixed deposit?

A fixed deposit is a bank or financial-institution deposit made for a chosen tenure at a stated interest rate. The investor usually receives the principal and accumulated interest at maturity.

FDs are commonly used for capital preservation and predictable returns, although early withdrawal can reduce the interest rate or attract a penalty.

How to compare FD options

Compare the annual rate, tenure, compounding frequency, premature-withdrawal rules, deposit insurance limits and tax impact rather than looking only at the maturity amount.

Interest from most fixed deposits is generally taxable according to the investor's applicable tax rules. Confirm current tax treatment with a qualified adviser.

Formula

M = P × (1 + r/n)^(n × t)
Interest = M − P
Effective yield = (1 + r/n)ⁿ − 1
Post-tax interest = Interest × (1 − slab%)

Engineering notes

Check whether the quoted FD rate applies to your exact deposit tenure and customer category.
Interest income may be taxable. Verify current tax rules and TDS applicability before investing.
This calculator is for planning; bank maturity calculations can differ because of their specific terms.

Formulas explained

A = P × (1 + r / n)^(n × t)

This compound-interest formula estimates how a fixed deposit grows when interest is periodically added back to the principal.

A: Maturity amount
P: Initial deposit amount
r: Annual interest rate in decimal form
n: Number of compounding periods per year
t: Deposit tenure in years

The final credit may differ slightly because banks use their own tenure rules, day-count conventions, premature-withdrawal penalties and tax treatment.

Cumulative and non-cumulative FD

A cumulative FD reinvests interest until maturity. A non-cumulative FD pays interest monthly, quarterly or at another selected interval, which may suit regular-income needs.

Premature withdrawal

Many banks allow early closure but may apply a lower interest rate or a penalty. Read the bank's terms before locking money for a long tenure.

Assumptions

Cumulative deposit: interest is reinvested, not paid out.
Rate is fixed for the full tenure; no premature withdrawal.
Tax is applied at your marginal slab; cess is excluded.

Tips

Senior citizens usually get 0.5% extra — enter the enhanced rate.
Ladder deposits across tenures so some money matures every year.
Compare the post-tax yield against debt funds and small-savings schemes.

Warnings

Premature closure typically loses 0.5–1% of the contracted rate.
Deposit insurance (DICGC) covers ₹5 lakh per bank per depositor.

Standards & references

RBI deposit interest rate directions
DICGC insurance limit ₹5,00,000
Section 194A TDS

Frequently asked questions

How is FD interest calculated?

FD interest is generally calculated using the deposit amount, annual interest rate, tenure and compounding frequency. The exact method depends on the bank's product terms.

Is FD interest taxable?

Interest from a fixed deposit can be taxable based on applicable rules and your tax situation. Consult the current bank terms and a qualified tax adviser.

Can I withdraw an FD before maturity?

Many banks allow premature withdrawal, but a lower rate or penalty may apply. Check the product's withdrawal terms before opening the deposit.

What inputs does the FD Calculator use?

It uses Currency, Deposit amount, Interest rate, Tenure, Compounding, and Your income tax slab. Follow the unit printed for each field and choose any selectable option to match the real scenario.

What does the FD Calculator calculate?

It calculates Maturity amount, Interest earned, Effective annual yield, Post-tax interest, Post-tax effective return, and Benefit over simple interest. With the displayed default inputs, Maturity amount is ₹710,873.

Which formula does the FD Calculator use?

The primary relationship is M = P × (1 + r/n)^(n × t). The page also shows substituted values and calculation steps so the result can be checked independently.

How can I verify a FD Calculator result?

First verify the units for Currency, Deposit amount, and Interest rate. Then compare the substituted formula steps with Maturity amount and its displayed precision.

What are the limitations of the FD Calculator?

FD Calculator: This is an estimate, not a lender offer. Verify fees, taxes, rate changes, eligibility and repayment terms in the official product documents.

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