Compound Interest Calculator

See how your savings or investment grows over time with compound interest and regular contributions.

Frequently Asked Questions

What is compound interest?

Compound interest is interest calculated on both the original principal and the interest already earned, so your balance grows faster over time compared to simple interest.

How does compounding frequency affect returns?

More frequent compounding (daily vs. annually) produces slightly higher returns for the same nominal interest rate, since interest is added to the balance more often.

How much difference do monthly contributions make?

Regular contributions can dramatically increase your final balance over long time periods because each contribution also earns compound interest for the remaining time.