Interest Calculator

Use this interactive calculator to see how compounding interest can impact your portfolio.

The amount of money you have available to invest initially.

Amount of money you plan to add each month (make this a negative number if you will be withdrawing every month).

The age at which you begin your monthly contributions.

The age you stop your monthly contributions (you will continue earning money through compounding interest).

If you are unsure of what to put here, refer to the table below for industry averages

%

Average Worldwide Real Returns 1870-2015

International Treasury Bills Short Term Corporate Bonds Equity
(stock ownership)
1.03% 2.53% 6.88%

*Jorda, Oscar, et al. “The Rate of Return on Everything, 1870–2015.” Mar. 2019.

RESULT

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Account Balance

Starting Amount:

Total Contributions:

Total Interest Earned:

Total Account Value:

$0

* Interest is compounded monthly