Set it up: three clear jars or envelopes labeled Spend, Save, and Give; a split you agree on (for example half, four tenths, one tenth); and a rule about when money can move between them.
We all sort money into pots
Economists call it mental accounting: people group money into categories, such as rent money, fun money, or savings, and treat each one differently, even though a dollar is a dollar.1 That habit can work against us, but it can also be used on purpose. A pot labeled “save” is harder to raid than a single pile.
What labeling money does
In a field study with low-income construction workers in rural India, part of each worker’s pay was set aside for saving in envelopes. Workers whose savings were split across two envelopes, rather than kept in one, saved substantially more.2 Dipping into savings meant opening another envelope, a small but deliberate step.
For a child, clear jars play a similar role. They can see the save jar grow, and spending from it means deliberately moving money from one jar to another.
Choosing a split
There’s no correct split. Some families start with half to spend, four tenths to save, and one tenth to give; others let the child choose within a range. What matters is that the rule is set before the money arrives, not after the toy store.
Example: $6 a week
Spend: $3 for small choices this week. Save: $2 toward a goal. Give: $1, kept until your child picks where it goes. After six weeks, the save jar holds $12 and the give jar $6.
When money moves between jars
Decide the exceptions up front: can save-jar money ever be spent early? Maybe once a goal changes, after talking it through. A rule like “moving money out of Save needs a day to think about it” keeps the jars meaningful without making them a trap. If your child changes goals, the saved money stays saved; it just has a new purpose.
Making the give jar real
The give jar works best when your child chooses where it goes: a food bank, an animal shelter, a gift for a friend in need. See teaching kids to give for what research says about talking with children about generosity.
What the research says
- People naturally sort money into mental accounts and treat each differently, which can be used deliberately to protect savings.1
- In a field study, low-income workers whose savings were split across two envelopes, rather than one, saved substantially more.2
- These studies are of adults; for children, physical jars are a way to apply the same idea, not a tested formula.
Try it in KidsLearnCash: each child has one balance, so use clear jars or envelopes at home for the split, a savings goal for the Save jar, and record gifts as spending so the ledger matches the jars.
Sources
- Thaler, R. H. (1999). Mental accounting matters. Journal of Behavioral Decision Making, 12(3), 183–206. doi.org/10.1002/(SICI)1099-0771(199909)12:3%3C183::AID-BDM318%3E3.0.CO;2-F
- Soman, D., & Cheema, A. (2011). Earmarking and partitioning: Increasing saving by low-income households. Journal of Marketing Research, 48(SPL), S14–S22. doi.org/10.1509/jmkr.48.SPL.S14
General educational ideas, not individualized financial advice. Splits and amounts are examples. We summarize published research in plain language; read the sources for their methods and limits. No affiliation or endorsement is implied.