Compound Interest Calculator
Watch compounding turn time into money.
Principal
₹50K
Interest earned
₹32.27K
Maturity value
₹82.27K
- Principal₹50K
- Interest₹32.27K
How it works
Compound interest adds each period's interest to the principal, so growth accelerates. Maturity = principal × (1 + rate/frequency)^(frequency × years). More frequent compounding means slightly faster growth.
Example
₹50,000 at 10% for 5 years with monthly compounding grows to about ₹80,700 — over 60% gains without adding a rupee.
FAQs
Compound vs simple interest?
Simple interest pays only on the original principal; compound interest pays on principal plus past interest. Over years, compounding wins by a large margin.
What is the Rule of 72?
Divide 72 by your rate to estimate doubling time. At 12%, money doubles roughly every 6 years; at 8%, every 9 years.
Does compounding frequency matter much?
Somewhat — monthly beats yearly at the same rate. But rate and time matter far more than frequency.
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