Free Tool · CI Formula

Compound Interest Calculator — India

Calculate compound interest for any principal, rate, tenure, and compounding frequency. See how daily, monthly, quarterly, and annual compounding affect your returns.

📈 Compound Interest Calculator

Principal
Total Interest
Maturity Amount

How Compound Interest Works

Compound interest is interest earned on both your principal AND on previously accumulated interest. It's the most powerful force in long-term wealth building.

A = P × (1 + r/n)n × t

Example: ₹1,00,000 at 8% for 10 Years

CompoundingMaturityInterest
Annual₹2,15,892₹1,15,892
Quarterly₹2,21,964₹1,21,964
Monthly₹2,21,964₹1,21,964
Daily₹2,22,535₹1,22,535

Frequently Asked Questions

What is the compound interest formula?

A = P × (1 + r/n)n × t. Substitute your principal, rate (decimal), compounding frequency, and tenure.

How is compound interest different from simple interest?

Simple interest accrues only on principal. Compound interest accrues on principal + accumulated interest. Over 20+ years, the difference can be 3–5× your money.

Which compounding frequency is best?

More frequent = slightly higher returns. Daily > monthly > quarterly > annual. Bank FDs in India use quarterly compounding.