What Is Interest? Simple Explanation for Kids
Explain interest to children as either money earned on savings or a cost paid for borrowing, depending on which side of the transaction they are on.
Educational guide by Progress Penguin · How we create and review content
Interest is a price attached to the use of money over time. A saver may earn interest because their money is kept in an interest-paying account, while a borrower may pay interest because they are using someone else's money now and repaying later.
Use both sides of the idea so children do not assume interest is always a reward. If 100 saved grows to more than 100, interest helped the saver. If 100 borrowed has to be repaid as more than 100, interest increased the cost of the loan.
Rates are usually expressed as percentages, but the amount of time matters too. Older children can compare two examples with the same starting amount and different rates or durations to see how the final amount changes.
Real products can include fees, changing rates and other terms, so the rate alone is not always the full story. Teach children to ask what the total amount earned or repaid will be.
Progress Penguin lessons can connect interest to savings, borrowing and compound growth with age-appropriate examples.
Common questions
Can interest be good or bad?
It depends on the situation. Interest can help savings grow, but it can also make borrowing more expensive.
What should kids compare when learning about interest?
Compare the starting amount, the rate, the time period and the final amount rather than looking at the percentage alone.