What is compound interest?

Compound interest is interest earned on both your initial principal deposit and the accumulated interest from prior periods.

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Finance Tools

Calculate future investment growth, total compound interest earned, and yearly portfolio projections with monthly contribution support.

Last updated August 2, 2026

1Enter your starting initial investment deposit.
2Specify your monthly recurring contribution amount.
3Enter your expected annual interest rate and investment horizon in years.
4Select your compounding frequency (Monthly, Annually, or Daily).
5Instantly view total interest earned and click 'View Growth Table' for a year-by-year schedule.

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