How is Australian income tax calculated?

Australian income tax is calculated using a progressive tax bracket system. For 2025-26: 0% up to $18,200, 16% from $18,201 to $45,000, 30% from $45,001 to $135,000, 37% from $135,001 to $190,000, and 45% above $190,000. The Medicare levy of 2% is added on top.

What is the tax-free threshold in Australia?

The tax-free threshold in Australia is $18,200. This means you pay no income tax on the first $18,200 of your annual income. You can claim the tax-free threshold from your primary employer by completing a Tax File Number declaration form.

What is the Low Income Tax Offset (LITO)?

The Low Income Tax Offset (LITO) reduces the amount of income tax you pay if you earn under $66,667. The maximum offset is $700 for incomes up to $37,500, and it phases out gradually to zero at $66,667. It is applied automatically when you lodge your tax return.

What is the Medicare levy?

The Medicare levy is a 2% charge on your taxable income that funds Australia's public health system. Most taxpayers pay the full 2%. Low-income earners may be exempt or pay a reduced rate. High earners without private hospital cover may also pay the Medicare Levy Surcharge (MLS) of 1% to 1.5%.

How to Calculate Your Australian Tax: Complete Guide

Quick Summary

Tax Brackets: 0% up to $18,200, then 16%, 30%, 37%, and 45%.
Medicare Levy: 2% of taxable income for most Australians.
Use Calculator: Try our Tax Return Calculator for instant estimates.
Key Tip: Claim all eligible deductions to reduce your tax bill.

Step 1: Understanding Australian Tax Brackets

Australia uses a progressive tax system, where higher income is taxed at higher rates. Here's how the brackets work for 2025-26 (same as 2024-25):

Taxable Income	Tax Rate	Tax on This Bracket
$0, $18,200	0%	Nil (tax-free threshold)
$18,201, $45,000	16%	16c for each $1 over $18,200
$45,001, $135,000	30%	$4,288 + 30c for each $1 over $45,000
$135,001, $190,000	37%	$31,288 + 37c for each $1 over $135,000
$190,001+	45%	$51,638 + 45c for each $1 over $190,000

Step 2: Calculate Your Income Tax

Let's calculate tax for someone earning $80,000 per year:

First $18,200: $0 tax
Next $26,800 ($18,201, $45,000): $26,800 × 16% = $4,288
Next $35,000 ($45,001, $80,000): $35,000 × 30% = $10,500
Total income tax: $14,788

Step 3: Add the Medicare Levy

Add 2% Medicare levy: $80,000 × 2% = $1,600. This brings the total tax to $16,388 before offsets. If you earn above $97,000 and don't have private hospital cover, you may also pay the Medicare Levy Surcharge (1% to 1.5%).

Step 4: Account for HECS-HELP Repayments

If you have a student debt, compulsory repayments kick in above a threshold. At $80,000, you'd repay around 3% of your income: $80,000 × 3% = $2,400. Use our HECS/HELP Repayment Calculator to see your specific repayment.

Step 5: Calculate Your Take-Home Pay

$80,000 − $16,388 − $2,400 = approximately $61,212 per year (around $1,177 per week). Use our Salary Calculator to see your own take-home pay after tax, super, Medicare, and HECS for any income level.

Common Tax Deductions You Can Claim

Reduce your tax bill by claiming eligible expenses:

Work-related expenses: Tools, uniforms, travel, home office costs
Self-education: Courses directly related to your job
Charitable donations: To registered DGR charities
Investment expenses: Management fees, interest on investment loans
Professional fees: Union fees, professional membership costs

Tips for First-Time Tax Filers

Keep records of all income and expenses throughout the year
Claim all eligible deductions, don't leave money on the table
Lodge via myGov or use a registered tax agent
Include all income sources: wages, investment income, rental income
Consult a tax agent for complex situations like capital gains or rental properties

Key Takeaways

Australian tax uses progressive brackets from 0% to 45%.
Add 2% Medicare levy to most tax calculations.
Claim all eligible deductions to reduce your tax liability.
Use our Tax Return Calculator for accurate estimates.