03/06/2026
Second Job? Don’t Tick the Wrong Box
Working more than one job can be a great way to boost your income, but ticking the wrong box on your tax declaration form can lead to an unexpected tax bill.
When you start a new job, you’ll usually complete a Tax File Number declaration form. One important question asks whether you want to claim the tax-free threshold.
For Australian tax residents, the first $18,200 of annual income is tax-free.
But here’s the catch...
This threshold applies to your total combined income, not to each job separately.
If you claim the tax-free threshold with multiple employers, each employer may withhold tax as though they are giving you the tax-free portion. This usually means not enough tax is withheld from your pay during the year.
At tax time, the ATO adds all your income together. If insufficient tax has been withheld, you may end up with a tax bill.
To reduce the risk of a surprise debt, you should generally only claim the tax-free threshold from your main or highest-paying job.
Not sure what to tick when working multiple jobs? Speak to our team before tax time.