Explaining interest to kids
Quick answer
Interest is extra money that gets added to savings over time. You can show it at home by paying your kid a small bonus on what they have saved, once a month or once a week. Work out the bonus together and let them watch the balance grow, including the bonus on bonuses.
What interest means in plain words
When you keep money in a savings account, the bank pays you a small extra amount for letting them hold it. That extra is interest. The longer you leave the money, the more is added.
Kids rarely feel that growth when the money sits in a drawer. A parent-paid bonus lets them see it in numbers they can follow.
A simple parent-paid system
- Choose a rate your kid can calculate, such as 5 percent for one month.
- Pick the day it gets paid, such as the first of the month.
- Look at the savings balance together.
- Multiply the balance by the rate and round to the nearest cent.
- Add the result to the balance.
- Repeat next month with the new, larger balance.
A worked example
This is only an example with made-up numbers. Say your kid has $20 saved, and you pay 5 percent a month on the balance.
| Month | Starting balance | Bonus added | New balance |
|---|---|---|---|
| 1 | $20.00 | $1.00 | $21.00 |
| 2 | $21.00 | $1.05 | $22.05 |
| 3 | $22.05 | $1.10 | $23.15 |
Notice that the second bonus is bigger than the first. The bonus is paid on the money plus the earlier bonus. That is the idea behind compounding, and it is worth pausing on.
Keep the example honest
- Tell your kid that this is a game you run at home, with a rate chosen by you.
- Real savings rates are set by banks, change over time, and are usually quoted per year, not per month.
- A bank will not match what you pay, so do not let your kid expect it.
- Keep your rate low enough that you are comfortable paying it for months.
Choosing how often to pay
Monthly is easiest to follow, because the bonus is large enough to notice. Weekly bonuses are tiny at small balances and can end up as a few cents. If you pay weekly, round to the nearest cent and say so. Pick one schedule and keep it for the whole trial, so the table stays easy to read.
What the system teaches
- Waiting makes savings grow.
- Taking money out lowers the next bonus.
- Small amounts add up over many months.
- Bonuses are earned by leaving money alone.
Doing it with a pretend balance
Pouch does not work out bonuses for you. A parent can add the bonus by hand as money added, once a month, after working it out together. Pouch keeps the pretend balance on your device, and you can note the reason for each addition so the history shows the bonus.
Talking points for different ages
| Age band | How to say it |
|---|---|
| Younger kids | Show a pile of coins, then a slightly bigger pile after waiting a month. |
| Early elementary | Show the monthly bonus on paper and let them add it up. |
| Upper elementary | Compare two kids: one who saves and one who spends. Use made-up names. |
| Teens | Look at the savings rates banks publish, and compare yearly versus monthly. |
Setting the rules up front
Tell your kid the rate, the payday and the rule about withdrawals before the first bonus. If taking money out is allowed, say how it affects the next bonus. Clear rules keep the game fun, and they stop it from becoming a source of arguments.
When to stop
If the system feels costly or confusing, end it with a note: “This was practice, and now we will look at a real account.” See first savings account when your kid is ready for that step.
Related reading
Try the interest calculator for kids to preview a few months. For the saving side, see savings goals for kids.
Questions parents ask
Should parents really pay interest on kids’ savings?
It is optional. Some families do it as a short teaching experiment so kids can see growth. If it costs more than you want, stop or lower the rate.
What rate should I use?
Pick a rate that is easy to calculate and that you are happy to pay. Use a round figure, such as 5 percent a month, and say it is for a short trial.
How do I explain compound interest?
Show the table. The bonus in month two is bigger because it is paid on the first bonus too.
Can the app add the bonus for me?
No. Pouch does not do this step. You work out the amount yourself and add it as money added.