How to cash stuff on fortnightly pay.
Most cash stuffing advice assumes a monthly budget. In Australia you're probably paid every second week, so here's how to budget in fortnights, including the maths for monthly bills.
Updated 21 October 2026
Budget in fortnights, not months
If you're paid fortnightly, make your budget fortnightly too. Every envelope gets an amount per pay, and every payday fills them the same way. Trying to run a monthly budget on fortnightly pay is where most of the confusion comes from: some months get two pays and some get three.
Turn every bill into a fortnightly amount
A year has 26 fortnights, not 24. That's why you can't just halve a monthly bill: you'd come up short twice a year. Use these instead:
| Bill comes | Fortnightly amount | Example |
|---|---|---|
| Weekly | Amount × 2 | $500 rent a week → $1,000 |
| Monthly | Amount × 12 ÷ 26 | $60 phone → $27.69 |
| Quarterly | Amount × 4 ÷ 26 | $330 power → $50.77 |
| Yearly | Amount ÷ 26 | $900 car rego → $34.62 |
Round each one up to the nearest dollar. The extra few cents a fortnight become a small buffer instead of a shortfall.
Fill your envelopes each payday
On payday, every envelope is topped back up to its fortnightly amount. If Groceries still has $124 left from last fortnight and its plan is $600, it gets $476, not $600. That's why the payday total is often less than your pay: the rest stays in your bank, ready for a goal or a bill.
Pay bills from the fortnight they land in
Fortnightly pay and monthly bills rarely line up. Two habits fix that. First, keep a Bills envelope that fills by the converted amounts above, so the money builds between due dates. Second, for anything yearly or quarterly, use a sinking fund so the bill is already covered when it arrives.
The three pay months
Twice a year, a calendar month holds three paydays. Because your budget runs in fortnights, that third pay isn't special: your envelopes fill as usual. But many monthly costs don't come again that month, so it often leaves real money spare. Decide in advance where it goes: an emergency fund, a debt, or a goal. That's two extra pays a year that would otherwise vanish.
If your pay isn't the same each fortnight
Budget on a low, typical pay. When a bigger one arrives, the extra goes to goals or debts after your envelopes are full. In Stuffed, turn on "My pay changes each time" and payday asks how much came in, so each fill matches what actually landed.