JuniorWealth

Compound Interest for Kids

The single best money lesson you can show a child. Set the monthly amount, pick an age, and watch what time does to small, boring, consistent investing. Then read how to explain compound interest to a kid so the numbers stick.

7% is a historical inflation-adjusted average — not guaranteed.

Grow until age

The headline

If your 10-year-old invests $25/month, they could have $3,205 by age 18.

That's $2,400 contributed and $805 of growth at 7%/year.

Contributions Growth

Growth by age

Age 11Age 18
AgeTotal contributedBalance
11$300$310
12$600$642
13$900$998
14$1,200$1,380
15$1,500$1,790
16$1,800$2,229
17$2,100$2,700
18$2,400$3,205

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