The 16% rate became 15%
On 1 July 2026 the rate on taxable income between $18,200 and $45,000 fell from 16% to 15%. It is the first of two cuts to that bracket made by the Treasury Laws Amendment (More Cost of Living Relief) Act 2025: the rate falls again, to 14%, from 1 July 2027. The thresholds did not move, and nor did the 30%, 37% and 45% rates above them.
Because the cut is one percentage point on a bracket 26,800 dollars wide, the most it is worth is 268 dollars a year, and every resident earning more than 45,000 dollars gets exactly that, which is why the first impact table shows the same gain from that salary up. Below it the gain is 1% of whatever you earn above the tax-free threshold. Working holiday makers and foreign residents are on their own scales, which did not change.
The surcharge and HELP thresholds were indexed
If you do not hold private hospital cover, the Medicare levy surcharge now starts above $105,000 instead of $101,000, with tier 2 from $123,000 and tier 3 from $164,000. A single person on 120,000 dollars dropped from tier 2 into tier 1, which is the larger gain in the second impact table.
HELP repayments start at $69,528, up from $67,000, the first indexation of the marginal system that began in 2025-26: you repay 15% of income above the threshold, then $9,028 plus 17% above $129,717, and a flat 10% of all your income above $186,050. A higher threshold lowers the repayment at every income in the marginal bands, so in those bands the HELP table gains more than the tax cut alone. Above the flat-rate threshold both years take 10% of all income, so there the gain is the tax cut only.
What stayed the same
The Medicare levy is still 2%, and the low income tax offset is still at most $700. The levy's low-income thresholds, $28,011 and $35,013 for a single person, show no change only because the thresholds for an income year are set in the following year's Budget: these are the 2025-26 figures, and the 2026-27 ones are not yet known. Your employer still pays 12% super guarantee on top of your salary. To see your own figure, try your salary in the take-home pay calculator.