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Compound Interest Calculator

↻ Updated FY 2026-27

See what consistent investing becomes over time. Enter a starting amount, monthly contribution, rate, horizon and compounding frequency — and watch compounding do the work.

Educational calculators — always consult a licensed professional before making financial decisions.

Your inputs

Starting principal

Monthly contribution

Annual interest rate

Years

Compounding frequency

Future balance

₹34,37,782

after 20 years

You contributed

₹13,00,000

₹5,000/mo + start

Interest earned

₹21,37,782

164% on contributions

Balance growth8% · 20 yr

todayyear 20

Where the money comes from

Contributions₹13,00,000

Interest₹21,37,782

ASSUMPTIONS — Interest compounds monthly; contributions are added monthly. Returns are assumed constant — real markets vary year to year. Figures are before taxes and inflation.

Runs entirely in your browser — nothing you enter is sent to us.How this works

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Sources & rate references

·Standard compound-growth formulas

Rates, brackets and limits here are checked against primary sources. If a number still looks off, email support@realmoneyiq.com and we'll review and fix it.

RealMoneyIQ provides free educational calculators, not financial, tax, investment or legal advice. Results are estimates based on the assumptions you enter and publicly published rates; your actual outcome will differ. Always confirm decisions with a licensed professional who knows your full situation.