Compound Interest Calculator.

See how an investment grows over time when your returns earn returns of their own.

Compound Interest Calculator

See how an investment grows over time when your returns earn returns of their own.

Your details

Initial investment

Amount of money that you have available to invest initially.

Monthly contribution

Amount that you plan to add to the principal every month, or a negative number for the amount that you plan to withdraw every month.

Length of time in years

Length of time, in years, that you plan to save.

Estimated interest rate (%)

Your estimated annual interest rate.

Interest rate variance range (%)

Range of interest rates (above and below the rate set above) that you desire to see results for.

Compound frequency

Times per year that interest will be compounded.

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Estimated balance after 20 years

Initial investment

Total contributions

Total interest earned

Final balance

Your money Interest earned

How the balance builds: your money and interest earned.

Show year-by-year breakdown

Year	Contributions	Interest	Balance

This calculator is for illustration only and is not financial advice. It assumes a constant rate of return and that contributions are made at the end of each month. Real investment returns vary and are not guaranteed. Speak with a licensed advisor before making decisions.

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