Tax for Casual Workers in Australia
How casual work is taxed in Australia — the loading, the tax-free threshold form, and the second-job withholding trap.
Casual income is taxed under exactly the same rules as everyone else's. It only feels chaotic because withholding works payday by payday, and one form you filled in on day one shapes every payslip.
Here's how the loading, the threshold form and the trap that catches almost everyone with two jobs fit together.
The loading isn't a bonus — it's a trade
Casual loading — the extra slice, usually around 25%, on your hourly rate — is compensation for what you don't get: paid annual leave, sick leave and job security. Tax-wise it's just ordinary income at ordinary rates. There's no special casual tax, despite what the break room says.
The real financial catch: the loading has to do the job leave normally does. Take a week off and your income is zero.
The form that sets your payday tax
When you start any job you fill in a tax file number declaration, and the tick that matters is "claim the tax-free threshold" — the first $18,200 everyone earns tax-free each year.
Tick yes and your employer withholds as if this job gets your tax-free chunk — small pays often have little or no tax taken out. Tick no and tax comes out from the first dollar. One job? Tick yes. The complications start with job number two.
The two-job trap
The rule: claim the tax-free threshold with one employer only — normally your highest-paying job. The second job withholds at the no-threshold rate, which looks brutal but is correct.
The ATO taxes you as one person with one combined income, so your second job's dollars stack on top of the first and sit on a higher step of the tax staircase. If both employers assume they've got your threshold, both under-withhold — and the shortfall lands as a bill in July. The heavier withholding on job two isn't extra tax; it's the right tax collected as you go.
🚨The trap
Ticking "claim the tax-free threshold" on two jobs at once is the classic casual-worker mistake. Both employers withhold too little, and the difference arrives as a tax bill after you lodge.
The July even-up (often in your favour)
Because casual hours bounce around, the withholding tables treat every big fortnight as your new normal and tax it as if it repeats all year. Your tax return fixes it: the ATO calculates your real bill on your actual annual total and settles the difference. Casuals with patchy hours often find they've overpaid — which comes back as a refund.
Same for students and part-timers who earned under $18,200 for the year: every cent withheld comes back, but only after you lodge. The ATO doesn't volunteer refunds you haven't asked for.
⚡Quick win
Earned under $18,200 this year with tax taken out of your pays? Lodge a return anyway — the whole lot comes back as a refund. Real money for one form.
The casual worker's cheat sheet
Threshold with one job. Expect chunky withholding on job two and know it evens out. Lodge a return even in a low-income year. And claim your deductions — uniforms, protective gear and work-related costs count for casuals too.
To see your annual position instead of payslip-by-payslip chaos, add up your income across all jobs and run it through our tax calculator.
FAQ
Do casual workers pay more tax than permanent staff?
No — the same brackets apply to everyone. Casuals often earn more per hour thanks to the loading, so more tax comes out per hour, but there's no special casual tax rate.
Which job should I claim the tax-free threshold with?
Just one — usually the job that pays you the most. Your other jobs withhold at the higher no-threshold rate, which covers the tax on your stacked income and helps you avoid a bill at tax time.
I earned under $18,200 this year. Do I get all my tax back?
Yes — if your total income for the year is under the tax-free threshold, every dollar withheld comes back as a refund. But you have to lodge a tax return to get it.
Run your own numbers
Sources: figures checked against ATO published rates and thresholds for FY2025-26 at the review date. See how we check our numbers.
⚠️ General information only — not tax or financial advice. Figures relate to FY2025-26 unless stated otherwise.