How to use it
- 1.Enter the starting principal.
- 2.Set an annual rate assumption.
- 3.Choose the duration.
- 4.Compare the result with simple interest or a different rate scenario.
See how interest-on-interest changes future value and real purchasing power. Change every input and see the estimate update immediately.
Your estimate
₹2,59,374
Estimated value
Amount contributed
₹1,00,000
Estimated growth
₹1,59,374
Today’s purchasing power
₹1,44,833
Educational estimate only. Methodology 2026.08. This is not a return promise, loan offer, tax filing or financial recommendation.
Understanding the calculator
Compound interest means growth is calculated on both the original principal and previously accumulated interest. It can describe deposits, investments or debt, but the real compounding convention must be verified.
This calculator illustrates annual compounding from principal, rate and time.
Methodology
Worked example. ₹1 lakh compounded annually at 10% for 10 years produces an illustrative value of about ₹2.59 lakh.
It is an educational tool that applies the disclosed compound interest method to the assumptions you enter.
No. Results are estimates, not forecasts, approvals, quotations or guarantees.
Testing conservative and optimistic inputs exposes uncertainty instead of hiding it behind one number.
Only when a tax or fee is shown as an explicit input or result. Otherwise it is excluded.
The mathematics follows the stated methodology, while real outcomes depend on rates, timing, rules, fees and circumstances.
No. Use it for education and scenario comparison, then verify decisions with official documents or a qualified professional.
Inflation translates a future amount into approximate present-day purchasing power. The default 6% is editable and is not a forecast.
Recalculate when rates, income, contributions, rules, goals or repayment terms change.
Yes. Institutions may use different compounding dates, rounding, charges and eligibility rules.
No. Calculations run locally in your browser and the input values are not sent to a calculation server.
Continue calculating