Question 1

How is income tax calculated in Australia?

Accepted Answer

Australia uses a progressive tax system with marginal brackets. You pay 0% on the first $18,200 (tax-free threshold), 16% on income from $18,201 to $45,000, 30% from $45,001 to $135,000, 37% from $135,001 to $190,000, and 45% on income over $190,000. Each rate only applies to income within that bracket, not your entire income.

Question 2

What changed with the Stage 3 tax cuts?

Accepted Answer

From 1 July 2024, the Stage 3 tax cuts reduced the 19% bracket to 16%, lowered the 32.5% bracket to 30%, and raised the 37% threshold from $120,000 to $135,000. These changes benefit all taxpayers earning above $18,200.

Question 3

What is the Medicare Levy?

Accepted Answer

The Medicare levy is a 2% charge on your taxable income that helps fund Australia's public healthcare system. Low-income earners (below $26,000) are exempt, with a reduced rate for incomes between $26,001 and $32,500. Non-residents and working holiday makers don't pay the Medicare levy.

Question 4

What is the Medicare Levy Surcharge (MLS)?

Accepted Answer

The MLS is an additional 1% to 1.5% surcharge on your taxable income if you earn above the threshold ($101,000 in FY 2025-26) and don't have private hospital cover. It's designed to encourage higher-income earners to take out private health insurance.

Question 5

How do HECS/HELP repayments work?

Accepted Answer

From FY 2025-26, HECS repayments use a marginal rate system (similar to income tax brackets). You only pay the repayment rate on income above each threshold, starting at $67,000. This replaced the previous flat rate system where the rate applied to your entire income.

Question 6

What is LITO (Low Income Tax Offset)?

Accepted Answer

LITO provides up to $700 in tax relief for incomes up to $37,500, reducing gradually to zero at $66,667. It's a non-refundable offset, meaning it can reduce your tax to zero but won't generate a refund. It's automatically applied when you lodge your tax return.

Question 7

Does salary sacrifice reduce my tax?

Accepted Answer

Yes, salary sacrifice into superannuation reduces your taxable income and therefore your income tax. However, it does NOT reduce your HECS repayment income or Medicare Levy Surcharge income, which use a broader income definition. The total of employer super plus salary sacrifice is capped at $30,000 per year (concessional cap).

Question 8

What's the difference between effective and marginal tax rate?

Accepted Answer

Your marginal rate is the rate applied to your next dollar of income (determined by your tax bracket). Your effective rate is your total tax divided by your total income — it represents the average rate you actually pay across all brackets. The effective rate is always lower than the marginal rate due to Australia's progressive tax system.

Tax Bracket	Rate	Income in Bracket	Tax
$0 – $18,200	0%	$18,200	$0
$18,201 – $45,000	16%	$26,799	$4,288
$45,001 – $135,000	30%	$39,999	$12,000
$135,001 – $190,000	37%	—	—
$190,001 – ∞	45%	—	—
Income tax before offsets			$16,288

Salary	Marginal Rate	Effective Rate	Take-Home Pay
$45,000	16%	10.8%	$40,137
$65,000	30%	17.8%	$53,437
$85,000	30%	21.2%	$67,012
$120,000	30%	24.3%	$90,812
$180,000	37%	28.6%	$128,463
$250,000	45%	33.5%	$166,363

Australian Income Tax Calculator

How Australian Income Tax Works in 2025–26

Worked Example: $85,000 Salary

What You Actually Pay at Every Income Level

What Most People Don't Realise

Marginal Rate vs Effective Rate

Take-Home Pay for Common Australian Salaries

Income Tax Calculators

Income Tax Guides