Tax on a second job
Updated 13 November 2026.
When you have more than one job, you normally claim the tax-free threshold from your main job only. Your second employer then withholds tax as if every dollar is taxable, so more comes out of each pay.
How much more is withheld
| Weekly pay | Withheld as main job | Withheld as second job |
|---|---|---|
| $300.00 | $0.00 | $52.00 |
| $500.00 | $21.00 | $90.00 |
| $700.00 | $65.00 | $152.00 |
This isn't extra tax. It makes sure enough is withheld across both jobs so you don't end up with a bill. Any overpayment comes back when you lodge your tax return.
When you might still owe tax
Each employer only knows about the pay it gives you. If your combined income pushes you into a higher tax bracket, the amounts withheld can still fall short. If that's likely, you can ask an employer to withhold extra.
See your figures on the pay calculator by choosing "No (second job)" for the tax-free threshold.