How does compound interest work to grow long-term wealth?

Compound interest is like having a piggy bank that grows bigger every year without you doing anything special.

Imagine you have $10 in your piggy bank. You save it for a year, and it earns $1, making it $11. Now, next year, instead of just earning $1 on the original $10, it earns $1 on the new total of $11, that’s $1.10! So now you have $12.10. The money you earned last year is helping you earn more this year, and every year after that!

Think of it like a snowball rolling down a hill. At first, it’s just a little ball of snow, but as it rolls, it gets bigger and bigger, picking up more snow along the way. That's what happens with compound interest: your money grows faster each year because it's working with the money you already earned.

If you keep saving and let that piggy bank grow for many years, like 10 or even 20, your $10 could turn into a whole lot more, all thanks to the extra money it made every year. That’s how people can become rich over time without having to work super hard, just by letting their money do some smart growing!