Two Jobs And Tax In Australia

It isn't, in the end — but it is withheld more heavily, and that distinction is the whole story. Australia lets you claim the $18,200 tax-free threshold with only one employer at a time, normally your main job (ATO: claiming the tax-free threshold). That employer withholds as though your first $18,200 for the year is tax-free. Your second employer has no idea what your first job pays, so the ATO's tables tell them to withhold from your very first dollar, at rates that assume those dollars stack on top of other income.

Under the 2026-27 withholding schedules, a second job paying $481 a week loses $86 a week — an effective 17.9% from dollar one. That feels brutal next to a main job where the first $350-odd each week attracts nothing. But withholding is only a prepayment. When you lodge your return, the ATO adds both jobs together, calculates one tax bill on the total using the standard resident brackets (ATO resident tax rates), and refunds any excess — or bills any shortfall.

One genuine trap sits alongside this: if you never give your second employer a tax file number declaration at all, they must withhold 47% of every dollar. That is not a penalty rate for second jobs; it is the no-TFN rate, and lodging the declaration fixes it.

Here is a worked year for someone earning $30,000 in their main job and $25,000 in a second job — $55,000 combined — paid evenly every week through 2026-27. The correct annual tax on $55,000 is $7,945: $7,020 of income tax, less a $175 Low Income Tax Offset, plus a $1,100 Medicare levy. That figure never changes. Only the withholding changes with your setup.

Computed with the ATO's 2026-27 Schedule 1 weekly withholding formulas (scales 1 and 2), assuming 52 equal weekly pays and no HELP debt. Figures rounded to the nearest dollar; actual pay-cycle rounding shifts totals slightly.

Two things stand out. Claiming the threshold twice quietly builds a five-figure income into a four-figure prepayment — a $5,000-plus bill nobody enjoys in October. And handing over no TFN over-withholds so aggressively that the eventual refund is cold comfort for a year of thin pays.

The honest answer: with the threshold correctly on one job, you land close to the right amount, but not always on the refund side. In the example above, the correct setup still leaves a shortfall of about $1,600. The reason is structural. The second job's dollars genuinely sit between $30,000 and $55,000 of annual income, so $10,000 of them fall in the 30% bracket — yet the no-threshold tables only take about 18c per dollar at that pay level, because they assume those dollars start lower down the scale.

You are more likely to see a refund when your combined income stays under about $45,000, when either job runs for only part of the year, or when hours bounce around — the tables withhold on each pay as though you earn it every week, so busy weeks over-withhold. If you would rather not face a bill, you can ask your second employer to withhold an extra fixed amount each pay (an upward variation) — around $30 a week would have covered the gap in the example. Run your own combined income through the income tax calculator to see your true annual figure before deciding.

The one that pays you the most. Putting the threshold against your biggest income stream keeps the most withholding accuracy where the most dollars flow, and keeps your regular take-home as high as it legitimately can be. If your jobs swap places — the side gig becomes the main gig — you can move the threshold by giving each employer a withholding declaration; you do not need the ATO's permission, and there is no limit on how often circumstances can change.

What you must not do is claim it at both jobs simply because the cash flow feels better. The extra take-home is not yours; it is next year's tax bill arriving early. If your total income across all jobs will stay under $18,200 for the year, that is the one situation where claiming the threshold at both is legitimate — there is no tax to under-withhold.

No, no, and pleasantly no. The Medicare levy is 2% of your total taxable income, calculated once at assessment — you never pay it per job, whatever each payslip shows. HELP/STSL repayments work the same way: the 2026-27 system takes 15c of each dollar of income above $69,528, based on your combined repayment income. If each job alone sits under the threshold but the total clears it, the repayment surfaces at tax time — worth telling both employers you have a study loan so withholding keeps pace.

Superannuation is the upside of multiple employers: each must pay the 12% superannuation guarantee on your ordinary time earnings, with no offsetting between jobs. Two jobs means two streams of super. The 2026-27 withholding rates for every scenario are laid out in the 2026-27 tax tables if you want to check a specific pay amount.

1. Check both TFN declarations. Threshold ticked at your main job, unticked at the second, TFN provided to both. This single check prevents both the 47% problem and the double-threshold bill.
2. Estimate your combined annual income and the tax on it, then compare against what both payslips are withholding. The PAYG withholding calculator shows what should be coming out of each pay.
3. If combined income clears $45,000, consider asking the second employer for a small upward variation so July brings a refund rather than a bill.
4. Flag any HELP debt with both employers, not just the main one.
5. Watch your super — 12% from each employer, visible in your fund within a about two weeks of every payday - under Payday Super it must reach your fund within seven business days, plus fund processing time.

Side income on an ABN works differently from a second employer: nobody withholds tax for you. The income still stacks on top of your salary at your marginal rate (30% + 2% Medicare levy for most people between $45,001 and $135,000), but nothing is taken out during the year, so the tax arrives as a bill at your return - and once it is big enough the ATO moves you onto quarterly PAYG instalments. Put aside roughly a third of every ABN dollar as you earn it. No super guarantee is paid on ABN income unless you contribute yourself, and GST registration becomes compulsory at $75,000 of turnover. The tax-free threshold question does not arise - it only ever applies to employer withholding.