When pay changes every week, a normal budget breaks. The fix is to budget on a low baseline and pay yourself a steady amount from a holding account. Here is how.
Written by Alex BPublished 10 November 2026
Money Detective is built around practical household money tools for Australians.
Casual work, shift work, commission, contracting and seasonal work all make income hard to predict. A normal budget assumes the same pay arrives each time, so one low pay throws everything off. This guide uses invented figures and is general information only.
Look at your last 6 to 12 pays, or months if you have them, and note the lowest ones. Your baseline is a figure you are confident you will reach in most pays, not the average. If your pays have been $1,400, $2,100, $900, $1,800, $1,500 and $2,300, the average is $1,666.67, but a baseline of $1,200 is safer to plan on.
Paste your recent pays, choose a steady wage and see whether a holding account would have survived your lowest stretch. This is a budget for casual workers, contractors and anyone with variable pay.
List your essentials (rent, utilities, groceries, transport, insurance, minimum debt payments). If the baseline covers them, good. If not, you know the size of the risk, and it is worth looking at whether anything can be reduced or moved.
Have all income go into a holding account, then transfer a fixed "wage" to your spending account every payday. In a good pay, the extra stays in the holding account. In a poor pay, you draw on it to keep the wage steady. Over time, this smooths the highs and lows. It takes a few pays to build up, so start with a small wage.
Invented example: a $1,200 wage each fortnight. In a $2,100 pay, $900 stays in the holding account. In a $900 pay, you top up $300 from it.
If you are a sole trader or contractor, tax may not be taken out for you. Setting aside a percentage of every payment can avoid a big bill later. The right percentage depends on your income and circumstances, so check with the ATO or a registered tax agent rather than guessing. GST and super may also apply.
If your work has a slow season, estimate how many weeks it lasts and how much you will need for essentials. Building toward that amount gives you a target. See the emergency fund guide for how to start.
| What the test shows | What it may mean | What to try |
|---|---|---|
| Holding account never runs out | The wage may be sustainable | Consider a small lift, or keep the surplus as a slow-period cushion |
| It runs out in a slow stretch | The wage is too high for the pattern | Lower the wage or build the opening balance first |
| It runs out early and often | Income may be below essentials | Review costs and income, and see living paycheck to paycheck |
| Balance keeps growing | The wage may be too low | Raise it, or put the surplus towards goals |
The test uses only the pays you entered, and past pays do not predict future ones.
| Fortnight | Pay | Wage out | Holding balance |
|---|---|---|---|
| 1 | $1,400 | $1,200 | $200 |
| 2 | $2,100 | $1,200 | $1,100 |
| 3 | $900 | $1,200 | $800 |
| 4 | $1,800 | $1,200 | $1,400 |
| 5 | $700 | $1,200 | $900 |
The pays vary from $700 to $2,100, but the wage is steady at $1,200. The balance never goes below zero because the good pays cover the poor ones.
Use a low baseline, cover essentials from it, and pay yourself a steady wage from a holding account.
A figure you are confident you will reach in most pays. It is lower than your average.
Larger than for a steady job. The slow period you expect is a good guide to the target.
If tax is not withheld, yes. The right amount depends on your situation, so ask the ATO or a registered tax agent.
Yes. See which budget spreadsheet suits you.
Changes in income can affect payments from Services Australia. Report changes as required and check the current rules with Services Australia. See budgeting with Centrelink payments.
You can do all of this in Excel. The Payday Buffer workbook lets you enter the pay you actually received each time, so safe to spend always reflects the real figure, though it is not designed specifically for irregular income. See how many bank accounts you need for the holding account setup.
This article provides general information only. It does not take into account your personal objectives, financial situation or needs, and it is not financial advice. Examples use invented figures. Money Detective's tools provide estimates and planning information. Consider your own circumstances, and seek independent advice if you need it, before making financial decisions.