FD calculator

Maturity value and interest from deposit amount, annual rate, tenure, and compounding frequency. India-style fixed deposit math.

Defaults to quarterly compounding (common on Indian bank FD pages). Switch tenure between years and months. Numbers are currency-agnostic; results show an Rs prefix. Rate and frequency are assumptions you can edit. Not investment or tax advice.

Deposit amount (principal) Any currency. Default 100000.

Annual interest rate % Nominal annual rate. Default 7.

Tenure Default 5. Pair with years or months.

Tenure unit Years: t as entered. Months: t = months / 12.

Compounding frequency Match your bank FD sheet. Default quarterly.

Interest style Simple ignores frequency: interest = P × R × t.

Maturity amount

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Principal

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Interest earned

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Breakup	Value

Defaults snapshot: principal vs interest (quarterly, 5 years, 7%)

Principal Rs 1.00L Interest ~Rs 0.41L

Not investment or tax advice. Ignores TDS, premature withdrawal, senior-citizen rate bumps, and payout vs reinvestment options.

Same deposit, four compounding settings

Banks quote a nominal annual rate, then compound on a schedule. Holding P, R, and tenure fixed while changing only frequency moves maturity. Shared case: Rs 1,00,000 at 7% for 5 years.

Compounding	n / year	Maturity	Interest
Yearly	1	≈ Rs 1,40,255.17	≈ Rs 40,255.17
Half-yearly	2	≈ Rs 1,41,059.88	≈ Rs 41,059.88
Quarterly (default)	4	≈ Rs 1,41,477.82	≈ Rs 41,477.82
Monthly	12	≈ Rs 1,41,762.53	≈ Rs 41,762.53

Pick the frequency printed on your FD advice slip. Guessing monthly when the bank compounds quarterly overstates maturity.

Compound FD formula (and the simple toggle)

For compound (reinvested) mode: period rate i = (R/100) / n, periods N = n × t, maturity A = P × (1+i)^N when i is not ~0; otherwise A = P. Interest = A − P.

Simple mode skips frequency entirely: interest = P × (R/100) × t, maturity = P + interest. Some short-tenure products are quoted that way; most multi-year bank FDs are compound. Page default is compound + quarterly.

Tenure unit: Years uses t as entered. Months uses t = months / 12 (so 60 months is 5 years). The unit control does not rewrite the tenure box; 5 years and 5 months are different tenures.

What this page deliberately leaves out

TDS on interest, Form 15G/15H, and post-tax yield.
Senior-citizen or special-rate bumps (enter the rate you were offered).
Premature withdrawal penalties and broken-period interest.
Interest payout (monthly/quarterly credit) vs cumulative reinvestment; this page models cumulative maturity.

For open-ended compounding with optional regular deposits, use the compound interest calculator. For monthly mutual-fund SIPs, use the SIP calculator. Not investment or tax advice. See the Disclaimer.

FAQ

How is FD maturity calculated?

This page uses compound interest for a lump-sum fixed deposit. Let P be the deposit amount, R the annual rate in percent, n the compounds per year, and t the tenure in years. Period rate i = (R/100) / n. Periods N = n × t. Maturity A = P × (1+i)^N when i is not about 0; otherwise A = P. Interest earned = A − P. Quarterly compounding means n = 4 (common on Indian bank FD pages).

Why does compounding frequency change maturity?

The same nominal annual rate compounds more often when n is higher, so effective yield rises slightly. On identical P, R, and tenure, monthly (n=12) beats quarterly (n=4), which beats half-yearly (n=2), which beats yearly (n=1). Match the frequency your bank states on the FD receipt; guessing wrong moves maturity by thousands on large deposits.

Does this include TDS or premature withdrawal?

No. The calculator ignores TDS on interest, Form 15G/15H, senior-citizen rate bumps, premature-withdrawal penalties, and payout-vs-reinvestment options. It is a browser-only estimate of compound maturity for a held-to-term lump sum.

Is anything uploaded?

No. Deposit amount, rate, tenure, compounding, and the math run in your browser. Nothing is sent to ToolPetal.