Tiny Snowballs, Big Dollars: Mastering Compound Interest cover art

Tiny Snowballs, Big Dollars: Mastering Compound Interest

Tiny Snowballs, Big Dollars: Mastering Compound Interest

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How Kids Can Become Millionaires with the S&P 500 and Compound Interest

On Money Smart Kids, Julia and Alexia explain how a 10-year-old can nearly become a millionaire by age 40 using an S&P 500 index fund, which they describe as a “basket” of 500 major U.S. companies like Apple, Microsoft, Disney, and Amazon. They emphasize that picking one winning stock is unpredictable, so buying the basket spreads risk, and note the S&P 500 has averaged about 10% annual growth over roughly 90 years (though it varies year to year). Using compound interest and a snowball analogy, they calculate that investing $100 per week from age 10 to 40 totals $156,000 contributed and grows to about $989,000, while starting at 20 yields about $331,000, a difference of $658,000. They suggest ways kids can save and note even $20 per week could become nearly $200,000 by 40.

00:00 Millionaire By Doing Nothing

00:35 Meet Money Smart Kids01:21 What Is The S&P 500

02:19 Why Buy The Basket

03:22 Compound Interest Magic

04:44 The Snowball Effect

05:05 The Million Dollar Math

06:58 Starting Late Costs You

08:12 How Kids Can Start

09:11 Your Weekly Money Mission

09:38 Recap And Challenge Grownups

10:19 Wrap Up And Next Episode


*This is not financial advice.

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