Interactive Tools

Compound Interest Calculator

Compound Interest—the eighth wonder of the world. It’s what allows your money to grow, and to eventually work harder than you do. See how much your money can grow using the power of compound interest!

How much are you starting with? Enter your total existing investment balance across retirement accounts, brokerage assets, etc.

Annual Rate of Return (%): Anywhere from 7-10% is a common assumption.

How much are you contributing? This is the amount you plan to add regularly to your investment. Either monthly or yearly, depending on your choice above.

Are you contributing annually or monthly? Select whether contributions occur once per year or monthly.

Annually Monthly

Years invested: How long you're letting your dollars grow!

Display Mode

Advanced Mode

Compounding Frequency: We assume monthly compounding for our calculations, but change it to see how it affects your investment!

Annually Monthly

Contribution Timing: Choose whether you make contributions at the beginning or end of the period you selected (year or month).

End of Period Beginning of Period

Ending Balance: $

Whether you’re saving for retirement, a home, or financial independence, every dollar saved today has exponential earning potential tomorrow. Curious how much you should save? Check out our free resource.