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Compound Interest Calculator

Project an initial investment and recurring monthly contributions using monthly compounding.

Ready to use Runs in your browser

Estimated future value

$63,368
Total contributed$40,000
Estimated growth$23,368

Assumes monthly compounding and end-of-month contributions. Returns are illustrative, not guaranteed.

About this tool

How it works

Compounds the starting balance monthly and adds each contribution at the end of the month.

A practical way to use it

Compare a one-time deposit with a smaller deposit plus monthly contributions over the same period.

Use results as a practical aid, and verify important decisions against your own source data and qualified guidance.