How Income Tax Works in Australia 2026-27
Last updated: July 2026 · Income Tax Rates Act 1986 · ITAA 1997 · Medicare Levy Act 1986 · Moneysmart (ASIC) · FY 2026–27
Understanding how income tax works in Australia is the difference between reading your payslip and actually knowing what it says. Most workers know tax comes out before the money arrives — far fewer can say why that amount, what the Medicare levy is, or why the refund lands the way it does at tax time.
This guide walks through the whole chain, step by step and in plain English: the brackets that set your tax, the withholding your employer does every payday, the levy and offsets applied on top, and the tax return where it all gets settled. Every rate here is for the 2026–27 financial year (1 July 2026 – 30 June 2027), verified against the legislation in force.
Gross, Taxable, Take-Home — The Three Numbers That Matter
Gross salary is the number in your contract. Taxable income is gross income minus your allowable deductions — work expenses, some donations, personal super contributions you claim. It’s this number the brackets apply to, which is why deductions save you tax. Take-home pay is what’s left after income tax and the Medicare levy come out.
One thing that does not come out is superannuation: the 12% super guarantee is your employer’s payment on top of your wage. If your offer says “$85,000 plus super”, your gross salary is the full $85,000 — super never touches it. Only voluntary salary sacrifice reduces the wage that hits your bank account.
The 2026–27 Brackets — How Marginal Tax Works
Australia’s brackets are marginal: each rate taxes only the slice of income inside its band. For 2026–27 the resident rates are: nothing on your first $18,200, 15% from $18,201 to $45,000 (cut from 16% on 1 July 2026), 30% to $135,000, 37% to $190,000 and 45% above that. The same bottom rate is already legislated to drop to 14% from 1 July 2027.
Worked example — $60,000 salary: the first $18,200 is free, the next $26,800 is taxed at 15% ($4,020), and the last $15,000 at 30% ($4,500). Total bracket tax: $8,520 — an effective rate of 14.2%, nowhere near the “30% bracket” it sounds like you’re in. A pay rise can never leave you worse off: only the new dollars are taxed at the higher rate.
PAYG Withholding — Why Tax Comes Out Every Payday
You don’t pay your annual tax in one hit. Under PAYG (pay as you go) withholding, your employer takes an estimate out of every pay and sends it to the ATO on your behalf. The withholding schedules are deliberately tuned to slightly over-collect for most people — which is why the typical outcome at tax time is a refund rather than a bill.
This is also why your payslip tax and this guide’s numbers can differ a little. Withholding is a per-payday approximation of an annual calculation; bonuses, second jobs and overtime all get smoothed out only when your return is assessed after the financial year ends on 30 June.
The Medicare Levy — 2% on Top
Separate from the brackets, most taxpayers pay a Medicare levy of 2% of taxable income to help fund the public health system. It’s calculated on the whole amount, not marginally — on $60,000 that’s $1,200. Low earners are protected: no levy at all below $27,222, then a gentle shade-in (capped at 10 cents per dollar over the threshold) until the full 2% applies from $34,027. High earners without private hospital cover can also face the Medicare levy surcharge — a separate extra charge designed to nudge people into private insurance.
Offsets — The Tax You Don’t Pay
An offset reduces your calculated tax directly, dollar for dollar — better than a deduction, which only reduces the income being taxed. The one that matters to most workers is the low income tax offset (LITO): up to $700 if your taxable income is under $37,500, tapering away to nothing at $66,667. You never apply for it; the ATO applies it automatically when your return is assessed. It’s the quiet reason someone on $25,000 ends up paying only a few hundred dollars of tax for the whole year.
Deductions — Lowering Your Taxable Income
Deductions are expenses you incurred to earn your income: tools and equipment, protective clothing, union fees, work-related travel, working-from-home running costs, and personal super contributions you choose to claim. Each dollar of deduction saves you your marginal rate — 30 cents for a middle earner. Keep records: the ATO can ask for receipts, and guessing is how refunds turn into audits. Salary sacrifice into super works before tax even applies — those contributions are taxed at 15% inside the fund instead of your marginal rate, which is why it’s the most popular legal tax lever for employees.
Your Tax Return — Where It All Reconciles
After the financial year ends on 30 June, you lodge a tax return — through your myGov account linked to the ATO, or via a registered tax agent. The ATO adds up your actual income, applies the brackets, levy and offsets, compares the result with what your employer withheld, and pays the difference back (or asks for it). Most employment income is pre-filled automatically from your employer’s payroll reporting, so for a standard worker lodging takes minutes, and the main value you add is claiming the deductions the ATO can’t see.
What about my HELP/HECS debt?
If you have a study loan, compulsory repayments are withheld on top of tax once your income passes the repayment threshold — and since 1 July 2026 they’re calculated marginally, only on the income above the threshold. The repayment thresholds are published by the ATO and aren’t reproduced here; the takeaway is that a HELP debt lowers your take-home beyond what the brackets alone suggest.
I have two jobs — why is the second taxed so hard?
Because the $18,200 tax-free threshold is claimed with one employer only. Your second employer withholds from the first dollar, which looks brutal on the payslip but reconciles to the same annual tax when you lodge. If you consistently get large refunds or bills, adjusting which job claims the threshold fixes the cash flow.
Do I need an accountant?
For a single employer, pre-filled income and ordinary deductions — usually not; myGov lodging is free and guided. An agent earns their fee when things get less ordinary: side-business income, investment properties, capital gains, or a backlog of unlodged years. Agent fees are themselves deductible the following year.
📋 Information verified — Official sources: Income Tax Rates Act 1986 · ITAA 1997 s 61-115 (LITO) · Medicare Levy Act 1986 · Moneysmart (ASIC)
⚠️ This is general information, not financial, tax or legal advice. KnowMyGovt is an independent service with no affiliation with or endorsement by the ATO, the Fair Work Commission or the Australian Government, and is not responsible for decisions you make based on it.
