Compound Interest Calculator
See how a lump sum could grow when interest is compounded over time. Choose your compounding frequency and a realistic rate assumption.
Principal
₹1,00,000
Interest
₹1,15,892
Final Amount
₹2,15,892
Estimate at a constant rate and compounding frequency. Actual returns vary.
How it is calculated
A = P × (1 + r/m)^(m × t)
P is the principal, r is the annual rate, m is the number of compounding periods per year, and t is the time in years. Interest earned is A − P.
Example
₹1,00,000 invested at 8% for 10 years, compounded yearly, grows to about ₹2,15,892. With quarterly compounding, the same setup gives about ₹2,19,112 — compounding frequency matters.
Important notes
- Constant-rate estimate; actual returns vary.
- Taxes and fees are not included.
Frequently asked questions
What is compound interest?
Compound interest is interest calculated on both the original principal and the interest that has already been added. Over time, this can make growth accelerate.
How does compounding frequency affect the result?
More frequent compounding adds interest sooner, so the final amount is higher at the same annual rate.
Is compound interest always guaranteed?
It is guaranteed only for fixed-rate products as per their terms. For market-linked investments, compounding describes the mathematics, not a promised outcome.
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CashBloom provides educational information and calculator estimates for general informational purposes. Results may differ from actual rates, taxes, fees, bank calculations or investment outcomes. Verify current information from official sources before making financial decisions.