In plain words
Caps stop lifestyle from eating the surplus — the 20% is paid first, not hoped for.
Two worked examples
The common mistake
The mistake: Treating the split as a law rather than a starting point to adjust to your own costs.
What’s true: It is a starting point, not a law, so costs may mean adjusting the split.
A need has a deadline; a want has a discount
Every expense is either a need or a want. Needs are survival and obligations; everything else can be negotiated or cut. If skipping it costs only comfort, it was a want wearing a need's clothes.
Cash flow
With uneven income, a budget built on a typical lean month holds; one built on the average does not. The good months fill a buffer that tops up the lean ones. The average is a month that never happens — and the bills still arrive in the lean one.
Where you’ll meet it
- Small monthly charges, big yearly billMonthly prices are set to feel small; the yearly total is what the habit really costs.
- Income in; spending and saving outA budget that mixes the three shows money as spent that you still have, or income you never received.
- Big bills you can see comingA bill you saw coming, paid from one month's pay, feels like an emergency; spread over the months before, it is just another line.
Related terms
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