Calculator
Compound interest calculator
The eighth wonder, visualised. Compare compounding frequencies side by side.
Maturity ₹11.04 L (₹5.00 L principal + ₹6.04 L interest)
Hover any bar for the yearly breakup. More frequent compounding = slightly higher maturity. Bank FDs typically compound quarterly.
What this calculator answers
₹5,00,000 at 8% for 10 years compounds to about ₹11,04,020 with quarterly compounding, of which ₹6,04,020 is interest. Switch between yearly, half-yearly, quarterly and monthly compounding to compare.
How it is calculated
A = P × (1 + annual rate ÷ compounding frequency)^(frequency × years), with quarterly compounding selected by default and the yearly chart built from the same formula year by year.
Defaults are ₹5,00,000 at 8% over 10 years compounded quarterly. Tax on the interest is not deducted.
Common questions
Why does more frequent compounding give a slightly higher maturity?
Interest is credited sooner and then earns interest itself, so monthly compounding produces a marginally higher amount than yearly compounding at the same nominal rate.
Which frequency do banks use for fixed deposits?
Most Indian banks compound fixed-deposit interest quarterly, which is why the FD calculator applies quarterly compounding.
Is the rate I enter the rate I will earn?
The rate is your own assumption. Fixed deposits, bonds and market products each carry their own rate and risk, so run the number you are actually being offered.
Source & freshness
- Source
- Deterministic formula in lib/calculators.ts
- Timeliness
- Static-verified
- Method
- calculated
- Note
- Illustrative projection from your inputs — not a market quote.