Second Job Tax Calculator
Estimate the tax withheld from a second job on the 2026-27 no tax-free threshold scale, and see why a second job is not taxed at a special higher rate.
- The tax-free threshold belongs with one employer at a time, normally the one that pays you the most. Every other payer should withhold from the first dollar.
- Claiming the threshold with two employers leaves the first $18,200 untaxed twice during the year. The ATO still assesses your combined income, so the shortfall lands as a bill.
| Weekly | Fortnightly | Annually | |
|---|---|---|---|
| Gross pay | $400 | $800 | $20,800 |
| Income tax | −$47 | −$93 | −$2,420 |
| Take-home pay | $353 | $707 | $18,380 |
The figures above are the year-end position. Payroll withholds per pay under ATO Schedule 1, which rounds to whole dollars each pay:
| If paid | Withheld each pay | Over a year |
|---|---|---|
| Weekly | $72 | $3,744 |
| Fortnightly | $144 | $3,744 |
| Monthly | $312 | $3,744 |
Withholding is a prepayment, so it rarely equals the final tax exactly. The gap is settled at your return. See the 2026-27 tax tables for the full schedule.
Tax bracket breakdown
| Bracket | Rate | Taxable | Tax |
|---|---|---|---|
| $0 – $45,000 | 15% | $20,800 | $3,120 |
| Low income tax offset | −$700 | ||
| Income tax | $2,420 |
Tax by bracket
Where your gross goes
- Take-home pay88%
- Income tax12%
The calculator opens with the threshold toggle off, the correct setting for a second job. The rest of our pay tools sit on the all calculators page.
Why the tax-free threshold applies to one job only
The first $18,200 you earn each year is tax free, but it is $18,200 across all your income, not $18,200 per employer. You claim the tax-free threshold on the TFN declaration you give one payer, and every other payer withholds from the first dollar on the no-threshold scale.
The system works this way because each employer only sees its own payroll. If both jobs left the first $18,200 untaxed, the year would end with two thresholds claimed against one entitlement, and the ATO would collect the difference after you lodge. Ticking no threshold on the smaller job is what keeps the end-of-year surprise small.
Weekly withholding with and without the threshold
Same weekly wage, two settings. The no-threshold column is what a second employer withholds under the 2026-27 scales; the difference is not extra tax, just earlier collection. These figures follow the same maths as the weekly tax table.
| Weekly wage | Threshold claimed | No threshold | Extra withheld / week |
|---|---|---|---|
| $300 | $0 | $52 | $52 |
| $400 | $6 | $72 | $66 |
| $600 | $42 | $120 | $78 |
| $800 | $83 | $184 | $101 |
Resident rates, annualised liability divided across 52 weeks, no HELP debt. At $300 and $400 a week the threshold column is zero because the annualised income sits inside the tax-free amount.
The second job tax rate myth
There is no special rate for second jobs in Australia. The ATO assesses one annual income against one set of 2026-27 tax brackets, however many employers paid it. Take a main job on $60,000 and a second job paying $400 a week, $20,800 a year. Tax on the main job alone is $9,620. Tax on the combined $80,800 is $16,376. The extra $6,756 equals 32.5% of the second income: the 30% bracket plus the 2% Medicare levy and the tapering low income tax offset. Earn the same total in one job and the tax is identical to the dollar.
Withholding is where the trap sits, and it points the other way. The no-threshold scale takes only $3,744 from that second job across the year, well short of the $6,756 it really adds, because the scale cannot see that your main job has already used up the lower brackets. Check the full-year position on your combined income with the PAYG calculator.
Which job should claim the threshold
Claim it with the job that pays you the most. The bigger income uses the whole $18,200, and the smaller job then withholds on the no-threshold scale from dollar one. If the jobs swap size mid-year, hand a new withholding declaration to each employer rather than letting the old settings ride.
Once both pay packets are set correctly, look at the combined result rather than each payslip alone. Run the total of both jobs through the take-home pay calculator to see the real weekly, fortnightly and monthly net position.