Australia 15% Tax Bracket & Asset Write-Off Calculator

$268 is the whole rate cut, own the number

The 15% rate applies only inside the $18,201-$45,000 band, so the maximum saving is 1% of $26,800: $268 a year, about $5.15 a week, identical for a nurse on $70,000 and a partner on $700,000. Anyone promising you a bigger 'stage 3' windfall in 2026-27 is selling something.

The schedule does keep giving: the same band drops to 14% from 1 July 2027, doubling the annual saving to roughly $536, and a $250 Working Australians Tax Offset arrives from 2027-28. Worth knowing, but none of it changes what lands in your pay packet this year, which is why the calculator separates the rate saving from everything else instead of blending it into one flattering number.

The write-off is where the real money is, if you run a business

For sole traders and small companies under $10 million turnover, the now-permanent $20,000 instant asset write-off dwarfs the rate cut: Renee's single mower purchase saved fourteen times what the bracket change did. Permanence matters more than the number, the old regime's annual cliffhangers forced December purchase decisions on whether Parliament would extend a threshold; now equipment timing can follow the business, not the legislation.

The rules that trip people: the $20,000 test is per ASSET (three $15,000 machines all qualify; one $22,000 machine does not, it enters the depreciation pool instead), the asset must be installed and ready for use by 30 June to count in the year, and private use scales the claim, a ute used 70% for work claims 70%.

And a deduction is not a discount. Spending $12,000 to save $3,840 in tax still costs $8,160 of real money, so the write-off rewards purchases the business needed anyway and punishes tax-motivated shopping exactly as much as it ever did. The cash-flow benefit is timing: the whole deduction lands this year instead of trickling through a depreciation schedule.

Adjust the withholding, not just the expectations

Employees see the rate cut automatically: the ATO's updated withholding schedules apply from the first pay after 1 July 2026, so the $5-a-week arrives without paperwork. Sole traders live on the other timetable, PAYG instalments calculated from last year's 16%-rate liability will slightly overshoot, and the write-off deduction only surfaces when the return is lodged.

If a large equipment purchase lands early in the year, varying your PAYG instalments down captures the cash flow now instead of lending it to the ATO until assessment. Vary honestly, an underestimate beyond 85% of the final liability attracts interest, but a documented $12,000 write-off is exactly the kind of known deduction variations exist for.

Last, the Medicare levy: the calculator holds it at 2% both years because that is the law for most taxpayers, but low-income levy thresholds index each year, so households near the levy shade-in range can see a few extra dollars of difference the simple comparison does not show.

One forward-looking note worth pricing today: because the same band drops again to 14% from July 2027, deductions are momentarily MORE valuable in 2026-27 than they will be next year for income inside that band, a dollar deducted this year saves 15 cents there, next year 14. It is a small asymmetry, but for a sole trader choosing whether an equipment purchase lands in June 2027 or July 2027, the write-off, the rate schedule, and cash flow all point the same direction for once: buy before the year ends if the business genuinely needs the asset.