Compound interest calculator
Enter the amount, rate, time and how often interest is added. See the total, and how much more it is than simple interest.
- Any compounding frequency
- Effective yearly rate
- Free, no sign-up
Make your interest work harder
Our experts compare FDs, small savings and debt funds after tax, so more of the interest stays with you.
Questions people often ask
Is FD interest compounded quarterly?
Yes, most bank FDs compound every quarter, so 7% quarterly works out to about 7.19% a year.
Is interest taxable?
Usually, at your slab rate, unless it's a tax-free product like PPF.
How compounding adds up
₹1 lakh at 8% for 5 years.
| Compounded | Amount |
|---|---|
| Yearly | ₹1,46,933 |
| Quarterly | ₹1,48,595 |
| Monthly | ₹1,48,985 |
Last reviewed 8 October 2026. The rules in this calculator come from these official sources.
- Standard compound interest calculator SEBI investor education
Common questions
What is the compound interest formula?
Amount = principal × (1 + rate ÷ n) to the power of (n × years), where n is how many times interest is added each year.
How much is ₹1 lakh at 8% for 5 years?
About ₹1,48,595 compounded quarterly, or ₹1,46,933 compounded yearly.
What is the effective yearly rate?
The rate that gives the same result if interest were added only once a year. 8% compounded quarterly equals about 8.24% a year.
Simple vs compound interest?
Simple interest is paid only on the principal. Compound interest is also paid on interest already earned, so it grows faster.
Is compound interest taxable?
Interest from FDs and most deposits is taxed at your slab rate each year, even if it's added to the deposit rather than paid out.
