Thirteen weeks is the useful horizon
A quarter ahead is long enough to catch the annual bills that ambush people and short enough that you can still act — move a payment date, pause a subscription, take an extra shift.
- List every income date and amount, using your lowest normal figure for variable pay.
- List every fixed payment with its actual date, not its average monthly cost.
- Add the irregular ones: insurance, registrations, school costs, holidays, annual renewals.
