Australian Tax Calculators — 2026-27
Six calculators, one page: income tax with the new 15% bracket, the new marginal HECS/HELP system, GST, capital gains, salary sacrifice and negative gearing.
FY2026-27 rates verified July 2026 against ATO settings · includes the 1 July 2026 tax cutHow income tax works in 2026-27
Residents pay nothing on the first $18,200, then 15% to $45,000 (cut from 16% on 1 July 2026 — worth up to $268 a year), 30% to $135,000, 37% to $190,000 and 45% above that. The 2% Medicare levy applies on top for most people (phasing in from $28,011 for singles), and the Low Income Tax Offset of up to $700 reduces tax automatically at lower incomes. The 15% rate is already legislated to drop again to 14% from 1 July 2027. From this year you can also claim a $1,000 instant work-related deduction without receipts — worth remembering at tax time.
The new marginal HECS system
HECS/HELP repayments were restructured into a marginal system: you now repay nothing on repayment income up to $69,528, 15c per dollar between $69,528 and $129,717, and $9,028 plus 17c per dollar above that — capped at 10% of repayment income. Under the old system, crossing the threshold triggered a percentage of your whole income; now only the income above the threshold counts, so a pay rise can never leave you worse off. Two other recent changes worth knowing: all HELP debts were cut by 20% in 2025, and indexation now uses the lower of CPI and wage growth. Repayment income includes taxable income plus fringe benefits, reportable super contributions and net investment losses — so salary sacrificing does not reduce it.
The two GST formulas
GST is 10%, unchanged since 2000. To add GST, multiply the ex-GST price by 1.1. To extract GST from a total, divide by 11 — not by 10, the single most common GST mistake in small business bookkeeping. A $1,100 GST-inclusive invoice contains $100 of GST, not $110. If you're registered for GST (required once turnover passes $75,000), the GST you collect isn't income — you're holding it for the ATO until your BAS.
Why sacrificing to super saves tax
Salary sacrificed into super is taxed at 15% inside the fund instead of your marginal rate plus Medicare. On a 30% marginal rate that's a 17c saving per dollar; at 45% it's 32c. The trade-off is access — the money is locked away until preservation age. Watch two limits: the concessional cap is $32,500 for 2026-27 and includes your employer's 12% super guarantee, and if your combined income and super contributions exceed $250,000, Division 293 adds another 15% tax, halving the benefit. Unused cap amounts from the previous five years can be carried forward if your super balance is under $500,000. Note: sacrificing lowers your income tax but not your HECS repayment income.
There is no "CGT rate"
Capital gains tax isn't a separate tax — your net gain is added to your taxable income and taxed at your marginal rates, which is why the same gain costs a retiree less than a surgeon. Hold an asset more than 12 months as an individual and the gain is discounted 50% before it's added. This calculator shows the true incremental tax: your tax bill with the gain minus your bill without it, including the Medicare levy and any bracket the gain pushes you into. Your own home is generally exempt (main residence exemption), and capital losses — current or carried forward — offset gains before the discount is applied.
What negative gearing actually does
A property is negatively geared when deductible expenses exceed the rent. The loss reduces your taxable income, saving tax at your marginal rate plus Medicare — but the loss is still real money out the door. The tax refund offsets only part of it: a $15,000 loss for someone on a 32% effective marginal rate returns $4,800 at tax time, leaving a genuine $10,200 annual holding cost, or about $196 a week. The strategy only pays off if capital growth outruns that cost. This calculator shows both the tax saving and the number that matters — what the property really costs you to hold each week after tax.