Use this calculator to see the magic of compound interest.
Play with the numbers, watch the magic!
Use this compound interest calculator to see your future wealth.
Investing in the stock market is not magic, but compound interest is. Investing long-term in a Three-Fund Portfolio or a Target Date Fund that grows at 7-9% will make you rich over time.
Gambling, trying to pick that winning stock, will not. No one beats the market long-term.
See what effect changing the amounts and time will have on your future wealth.
Starting Balance - assuming you start with zero dollars in your investment account.
Annual Gain - The rate at which the account will grow. 7% is a conservative number. 10% is the S&P500 long-term average.
Time Period - how long the snowball has been rolling.
Compound Interest Calculator
Watch your money grow. Play with the numbers and see the magic of compound interest. We will get rich, slow.
Your Results
| Year | Contributed | Interest | Balance |
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💡 Use 7-8% as a conservative estimate for a Three-Fund Portfolio. 10% is the long-term S&P 500 average before inflation. The real magic happens after year 15 when compound interest really kicks in. Start now — future you will be grateful.
Albert Einstein (turns out he was an investor, just like you.):
“Compound interest is the eighth wonder of the world. He who understands it, earns it; he who doesn't, pays it.”
