Quarterly Compound Interest Calculator
Compounding every quarter — the convention behind Indian FDs and many bonds, computed exactly.
Formula
Disclaimer: Bank rounding and TDS deductions can shift maturity values slightly. Not financial advice.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Need quarterly compound interest calculator results fast? Skip the spreadsheet and get a clear, defensible answer in one step — free, private and instant, recalculating live as you change any input.
About Quarterly Compound Interest Calculator
Quarterly compounding is India's default convention: bank fixed deposits, most NBFC deposits and several small-savings instruments credit interest every three months — so the 7.25% your FD advertises actually compounds to a 7.45% effective annual rate, exactly as this calculator shows on the default ₹3,00,000 over 5 years. This is why FD maturity values 'beat' naive mental math: ₹3 lakh at 7.25% simple would earn ₹1.09 lakh over 5 years, but quarterly compounding delivers ~₹1.29 lakh — each quarter's credited interest joins the principal for the next quarter. The cumulative-FD chooser implicitly takes this deal; monthly-payout FDs forfeit it (and actually pay a slightly DISCOUNTED monthly rate) in exchange for income. When comparing across conventions — a 7.25% quarterly-compounded FD versus a 7.4% annual-payout bond versus a 7.1% monthly-compounding NBFC deposit — convert everything to effective annual rate first (the output above). Differences of 10–20 bps routinely hide in compounding conventions, and at FD scale over 5 years that's real money: each 10 bps on ₹3 lakh ≈ ₹1,800 of maturity value.
How to use Quarterly Compound Interest Calculator
- 1Enter Principal, Annual rate (nominal) (%), Period (years) into the Quarterly Compound Interest Calculator.
- 2The result is computed automatically using FV = P × (1 + r/4)^(4t) ; effective rate = (1 + r/4)^4 − 1 — there is no button to press; it updates live as you type.
- 3Change any input to model a different scenario, then use “Copy result link” to share the exact numbers.
Why use Quarterly Compound Interest Calculator?
- ✓Computes quarterly compound interest calculator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter are never uploaded or stored
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
FD me quarterly compounding ka matlab kya hai?+
Har 3 mahine me interest principal me jud jata hai aur agle quarter usse bhi interest milta hai. 7.25% nominal isi wajah se 7.45% effective ban jata hai. Cumulative FD me yeh khud hota hai; monthly-payout FD me interest bahar aa jata hai isliye compounding ka fayda nahi milta (aur monthly rate thoda discounted hota hai).
Same rate par quarterly vs annual compounding me kitna farak?+
7.25% par lagbhag 20 bps effective (7.45% vs 7.25%) — ₹3 lakh par 5 saal me ~₹3,600. Chhota lagta hai, par do FD compare karte waqt yeh convention-difference rate-difference jitna hi matter karta hai. Hamesha effective rate par compare kijiye, nominal par nahi.
Kya saare banks quarterly hi compound karte hain?+
FDs me lagbhag haan (RBI convention), par NBFC deposits me monthly/annual options dikhte hain, aur post-office schemes apne-apne niyam rakhte hain (NSC annual, SCSS quarterly payout-simple). Scheme document me 'compounded quarterly/annually' ki line hi asli rate batati hai — wahi is calculator me daal kar compare karein.
Does quarterly compounding apply to my FD's TDS too?+
TDS is deducted on interest as accrued/credited (10% beyond the threshold, 20% sans PAN) — which slightly reduces the base that compounds if deducted from the FD. Submitting 15G/15H (if eligible) or holding FDs across family members within thresholds keeps the full quarterly compounding intact.
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