How Bonuses Are Taxed in Australia
There's no special bonus tax in Australia — why withholding on a bonus looks brutal on the payslip, and how it evens out at tax time.
There is no special bonus tax in Australia. A bonus is ordinary income, taxed under exactly the same brackets as your salary — even if the payslip says the $5,000 email became a $3,000 deposit.
The gap is a quirk of withholding — the payday tax estimate — meeting a one-off payment. Here's the mechanics, and why tax time quietly gives back anything over-grabbed.
The payday machine meets a one-off
Every payday, payroll estimates your tax using ATO tables built on one assumption: this pay is your normal pay. To tax a lump sum, the standard method spreads it across the year's pays, works out the extra tax that annual picture demands, and withholds it all from this single payday.
The result: bonus withholding lands at roughly your marginal rate — the tax on your last dollar — or sometimes effectively higher, with rounding and pay-period quirks stacked on. On the payslip it reads like punishment. It's just a blunt formula doing its one job.
The maths on a real bonus
Take a $100,000 salary and a $5,000 bonus in 2025-26. Your salary already fills the brackets up to $100,000, so the bonus stacks on top — squarely inside the 30% bracket, plus the 2% Medicare levy. True tax on the bonus: 32%, or $1,600. You genuinely keep $3,400.
If payday withholding grabbed more than $1,600 — and one-off payments often trigger exactly that — the excess isn't gone. It sits in your prepaid tax pile at the ATO, waiting for July.
💡Reality check
There's no special bonus tax rate. Whatever the payslip suggests, a bonus is ultimately taxed at your ordinary marginal rate — for most people, 32 to 47 cents per dollar including the Medicare levy.
July: the great evening-out
Your tax return ignores payday drama. It takes your actual annual income — salary plus bonus plus everything else — calculates the true bill from the brackets, and compares it with the total withheld. Over-withheld on the bonus? The difference comes back in your refund, automatically.
So your bonus wasn't over-taxed — part of it was pre-paid, and the pre-payment comes home at tax time. Annoying timing, correct total.
Squeezing more from the next one
You can't dodge tax on a bonus, but you do have one genuine lever — where it lands:
- Salary sacrifice it into super before it's paid — pre-tax contributions are taxed at concessional rates inside super instead of your marginal rate, though the money locks up until retirement
- Time your deductions — big planned work purchases in the same year as a bonus save tax at your marginal rate, exactly when it stings most
- Watch the surcharge line — a bonus can push your income over the private health insurance surcharge threshold, an extra cost worth seeing coming
- Don't spend the payslip fantasy — budget on the after-tax figure (bonus times roughly 0.68 in the 30% bracket), and the refund becomes a pleasant surprise instead of a rescue
⚡Quick win
Bonus coming? Ask payroll about sacrificing some into super before it's paid. In the 30% bracket, the tax saving on each sacrificed dollar is significant — if you can live without the cash until retirement.
The bottom line
Payday withholding on bonuses is a blunt estimate; tax time is the precise answer. The only permanent tax on your bonus is your ordinary marginal rate.
To see a bonus's real after-tax value before you mentally spend it, run your salary with and without it through our tax calculator — the difference is what the bonus is genuinely worth to you.
FAQ
Are bonuses taxed at a higher rate in Australia?
No. A bonus is ordinary income taxed at your normal marginal rate. Payday withholding on lump sums often runs high, but any excess comes back through your tax return.
How much of a $5,000 bonus will I actually keep?
On a $100,000 salary, the bonus sits in the 30% bracket plus the 2% Medicare levy, so the true tax is $1,600 and you keep $3,400. If more was withheld on payday, the difference returns in your refund.
Can I reduce the tax on my bonus?
The main lever is salary sacrificing some of it into super before it's paid, where it's taxed at concessional rates instead of your marginal rate. Otherwise, timing deductions into the same year helps — but the bonus itself is always ordinary taxable income.
Run your own numbers
Sources: figures checked against ATO published rates and thresholds for FY2025-26 at the review date. See how we check our numbers.
⚠️ General information only — not tax or financial advice. Figures relate to FY2025-26 unless stated otherwise.