Australia Tax Guide 2026-27: Income Tax, CGT, Deductions & More

How the ATO Taxes Your Income

Australia uses a progressive tax system, administered by the Australian Taxation Office (ATO). This means the rate you pay rises as your income rises — but critically, higher rates only apply to income above each threshold, not to your entire income. The common misconception that "a pay rise puts you in a higher bracket and leaves you worse off" is simply wrong.

Your assessable income is the starting point. This includes wages and salary, investment income (dividends, interest, rent), capital gains, business income, and most government payments. From assessable income you subtract allowable deductions — work-related expenses, investment costs, certain personal contributions — to arrive at your taxable income, which is what the brackets are applied to.

The ATO requires most individuals to lodge an Income Tax Return (ITR) covering the financial year 1 July to 30 June. If you self-lodge via myTax, the deadline is 31 October. If you use a registered tax agent, they can generally lodge on your behalf by May of the following year — giving you significantly more time and potentially surfacing deductions you would have missed.

2026-27 Income Tax Brackets at a Glance

The 2026-27 individual tax rates for Australian residents are:

On top of income tax, virtually every taxpayer also pays the Medicare levy of 2% on their entire taxable income (with a low-income reduction for those earning under approximately $26,000). So an employee earning $100,000 faces a top marginal rate of 34.5% on income between $45,001 and $100,000 once Medicare is included.

Two offsets reduce tax payable directly — they are not deductions, they are subtracted from the tax bill itself. The Low Income Tax Offset (LITO) provides up to $700 for incomes under $37,500, phasing out entirely at $66,667. This means the effective tax-free threshold is closer to $21,885 in practice.

Tax Offsets vs Tax Deductions: The Critical Difference

Many Australians confuse offsets and deductions, and the difference is significant. A tax deduction reduces your taxable income. A $1,000 deduction at the 32.5% marginal rate saves you $325 in tax. A tax offset reduces your actual tax payable dollar-for-dollar — a $700 LITO offset saves $700 in tax, regardless of your marginal rate.

This means offsets are worth far more to low-income earners (proportionally) and deductions are worth more to high-income earners. Salary sacrifice into superannuation, for instance, is a deduction-style mechanism: at 45% marginal rate it saves 45 cents per dollar contributed, versus the 15% tax inside super — a 30-cent saving per dollar.

Key offsets for individuals in 2026-27 include the LITO (up to $700), the Low and Middle Income Tax Offset (LMITO — this was a temporary measure that has now ended), the Senior Australians and Pensioners Tax Offset (SAPTO), and the private health insurance offset for eligible holders.

Medicare Levy and the Medicare Levy Surcharge

The Medicare levy is 2% of taxable income and funds Australia's universal healthcare system. It applies to virtually all resident taxpayers, with a low-income threshold reduction. For a person earning $80,000, the Medicare levy alone is $1,600 per year.

The Medicare Levy Surcharge (MLS) is an additional 1% to 1.5% that applies to higher earners who do not hold private hospital cover. It kicks in at $93,000 for singles and $186,000 for families in 2026-27. The intent is to encourage those who can afford it to take private cover and reduce pressure on the public system. At an income of $100,000, the MLS costs $1,000 per year — often less than a basic private hospital policy but worth modelling carefully.

Superannuation as a Tax Strategy

Australia's superannuation system is one of the most tax-effective savings vehicles available. Concessional (pre-tax) contributions — employer SG contributions, salary sacrifice, and personal deductible contributions — are taxed at just 15% inside the fund, compared to your marginal rate of up to 47% (including Medicare). The concessional cap for 2026-27 is $30,000.

A person earning $120,000 (marginal rate 39.5% including Medicare) who makes a $10,000 salary sacrifice contribution saves $3,950 in income tax and Medicare, pays $1,500 tax inside super, and nets a $2,450 saving per year. Over a career, the compounding effect of this tax differential is enormous.

Catch-up contributions allow those with total super balances below $500,000 to carry forward unused concessional cap space from the previous five financial years and make larger contributions in a single year. This is particularly powerful for people who had career breaks or periods of lower income.

Negative Gearing and Investment Property Tax

Around 70% of Australian property investors use negative gearing — the practice of holding a property where the costs (interest, rates, insurance, depreciation, management fees) exceed the rental income. The resulting net loss is deductible against your other income, such as salary.

A property costing $52,000 per year to hold but generating only $40,000 in rent creates a $12,000 loss. At a marginal rate of 45.5% (including Medicare), this saves approximately $5,460 in tax. The investor's bet is that capital growth will more than compensate for the annual cash shortfall.

The ATO allows depreciation of building structure (2.5% per year for buildings built after September 1987) and plant and equipment items, which can substantially increase the paper loss without requiring additional cash outflow. A quantity surveyor's depreciation schedule, costing $500–$700, often unlocks thousands of dollars in annual deductions.

Capital Gains Tax (CGT)

When you sell a capital asset — shares, investment property, cryptocurrency, business goodwill — any profit is a capital gain and is added to your assessable income in the year of sale. There is no separate CGT rate; your gain is taxed at your marginal income tax rate.

The crucial concession is the 50% CGT discount: if you have held the asset for more than 12 months, only half the gain is included in your taxable income. A $200,000 gain on a property held for eight years becomes a $100,000 addition to taxable income. At a 37% marginal rate, the tax is $37,000 — effective rate of 18.5% on the original gain.

Your main residence (the home you live in) is fully exempt from CGT if you used it as your primary residence for the entire ownership period. The ATO also allows a six-year absence rule: you can rent out your former main residence for up to six years and still claim the full main residence exemption, provided you are not treating another property as your main residence during that time.

HECS-HELP Repayments

If you studied at university using a HECS-HELP loan, repayments are compulsory once your income exceeds $54,435 in 2026-27. Repayments are calculated as a percentage of your total income (not just the excess over the threshold) and are collected via the PAYG withholding system — your employer deducts them alongside income tax.

Crucially, HECS-HELP is not interest-bearing in the traditional sense, but it is indexed to CPI on 1 June each year. In June 2023, indexation was 7.1%, adding thousands to large balances overnight. Voluntary repayments stop new indexation from accumulating on the amount repaid, though the ATO removed the 5% early repayment bonus that previously existed.

HECS debt also affects your mortgage borrowing capacity: lenders count HECS repayments as a committed expense, reducing the amount they will lend to you. A $50,000 HECS balance at an income of $90,000 generates repayments of roughly $5,850 per year, which lenders treat as equivalent to a personal loan repayment.

Key Working-From-Home Deductions

Since the ATO's 2022-23 overhaul of WFH claims, the standard method is the fixed rate of 67 cents per hour worked from home. This covers electricity, internet, phone, stationery, and printer consumables. Equipment like laptops and desks are claimed separately via depreciation.

You must keep a record of actual hours worked from home — a diary, timesheet, or calendar entries. An employee working from home 220 days per year for 8 hours each day accumulates 1,760 WFH hours. At 67 cents, the deduction is $1,179, saving $383 in tax at the 32.5% rate. If you also depreciate a $2,000 laptop over 3 years, that adds another $667 in annual deductions.

The actual cost method requires a dedicated work area and proportional calculations for each expense — more complex but potentially more valuable if you have a large home office, high electricity usage, or expensive equipment.

Key Tax Dates for 2026-27

2026-27 Key Tax Thresholds Summary

Frequently Asked Questions

Do I need to lodge a tax return if I earn under $18,200?

If your only income was from an employer and tax was withheld, you may still need to lodge to get a refund of that withheld tax. The ATO has a tool to check if you need to lodge. If you had no tax withheld and earned under $18,200, you generally are not required to lodge — but lodging may still trigger refundable tax offsets.

What is the difference between a tax deduction and a tax offset?

A deduction reduces your taxable income — so a $1,000 deduction saves you your marginal rate times $1,000 (e.g., $325 at 32.5%). An offset reduces your actual tax bill dollar-for-dollar. Offsets are more valuable at lower incomes; deductions are more valuable for high-income earners.

Can I claim superannuation contributions as a deduction?

Yes, if you are self-employed or earn less than 10% of your income from an employer, you can make personal contributions and claim them as a deduction (up to the $30,000 concessional cap, less your employer's contributions). Employees must use salary sacrifice to get the same pre-tax benefit.

How does the ATO know what I earn?

Through Single Touch Payroll (STP), your employer reports your salary, PAYG withholding, and super contributions to the ATO in real time every pay cycle. Banks, brokers, share registries, and rental platforms also report income. The ATO pre-fills most ITRs with this data, but you are responsible for checking it is correct and adding any amounts not reported.

Is the CGT discount available for non-residents?

No. The 50% CGT discount on assets purchased after 8 May 2012 is not available to foreign residents. For assets purchased before that date, a proportional discount may apply based on the period of Australian residency. This is a significant consideration for Australians living abroad who hold Australian investment properties.