compound lab.BetaExperience the power of compounding
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A little now.
A lot later.

What happens when you give your money time? Change a few things. Watch it grow. Discover the power of compounding.

Explore your own money story

See how money you put in and investment growth could combine over time. The total balance is both parts added together.

How to use it: Change the starting money, monthly additions, years, or imagined growth rate. Results update right away. Press Play to watch the chart grow, Pause to stop, or Reset to return to the beginning. You can also move the timeline slider to explore different moments, then look below to see whether growth becomes bigger than the money you added.

What could your
money grow into?

ⓘ What does this mean?

Starting amount: The money you put in at the beginning. For example, you might start with $500 saved from gifts or a part-time job. You can start at $0, too.

ⓘ What does this mean?

Monthly contribution: Money you add every month. For example, adding $25 from each month’s pay means you’re putting in $300 over a year. Here, that money goes in at the end of each month.

$0$1,000 / month
ⓘ What does this mean?

Time: How many years you leave your money invested while adding money each month. Choose 10 years to see what could happen over the next decade. More time also gives earlier growth a chance to grow again.

1 year50 years
ⓘ What does this mean?

Hypothetical annual return: An imagined percentage used to explore how an investment might grow in a year. A 7% rate is roughly $7 of growth on $100 over a year. This lab splits the rate across 12 months, so each month’s growth can also earn growth. It’s an assumption, not a promise: real returns change, and you can lose money.

This growth rate is made up for exploring possibilities. Real investments can grow or lose value.
Growth is calculated monthly. New money is added at the end of each month.

0%12%
Try one changeSee what it does to your total balance.
Total balance (money added + growth)
After 30 years
Money you addedInvestment growth
Money added
Your starting money + monthly additions
Investment growth
Extra money earned — excludes money you added
Ready to explore
NowYear 30
Insight

When does your money take over?

Based on your current scenario

Your money took over

Money added
Investment growth

Two parts of the same story

Money addedGrowth
Compounding means the money your investments make can start making money too.

What if you started earlier?

Same contributions and return. A different amount of time.