Capital gains tax on property is the tax you pay on the profit made when you sell a property that is not your primary home. Understanding how CGT works, what exemptions apply, and how the 50% discount reduces your bill can save you tens of thousands of dollars when you decide to sell.

For many Australians, property is the largest asset they will ever own. Yet the tax rules that govern what happens when you sell can feel impossibly complex. This guide cuts through the jargon to explain exactly how CGT applies to real estate, who qualifies for the main-residence exemption, and what the current policy environment means for investors planning their next move.

What Is Capital Gains Tax on Property and How Is It Calculated?

Capital gains tax is not a separate tax in Australia. It forms part of your assessable income in the financial year you sell an asset and is taxed at your marginal income tax rate. The Australian Taxation Office (ATO) defines a capital gain as the difference between your cost base (broadly, what you paid plus eligible acquisition costs) and your sale proceeds.

For example, if you purchased an investment property for $500,000 and sold it for $750,000, your gross capital gain is $250,000. That $250,000 is then added to your taxable income for the year. At a marginal rate of 37%, the tax payable on that gain would be $92,500 before any discounts or deductions.

What goes into the cost base?

• Purchase price of the property
• Stamp duty and conveyancing fees paid on acquisition
• Legal fees, building inspections, and pest inspections at purchase
• Capital improvement costs (renovations that add value, not routine repairs)
• Agent commissions and advertising costs paid on sale

It is worth noting that costs you have already claimed as tax deductions (such as repairs or depreciation) cannot be included in the cost base again. The ATO is clear on this point, and errors here are a common trigger for audit activity.

For a deeper breakdown of how CGT interacts with the sale process, the complete guide to selling investment property and capital gains tax in Australia covers the mechanics in detail, including how partial exemptions work when a property has been used for mixed purposes.

How Does the 50% CGT Discount Work for Property Investors?

The 50% CGT discount is one of the most valuable concessions available to individual Australian property investors. If you have owned an investment property for at least 12 months before selling, you are entitled to reduce your net capital gain by 50% before adding it to your taxable income. Using the earlier example, a $250,000 gross gain would be reduced to $125,000 of assessable income — cutting the tax payable roughly in half.

According to the ATO’s 2023-24 taxation statistics, the CGT discount is accessed by hundreds of thousands of taxpayers each year and represents one of the largest concessions in the personal tax system. The discount applies to individuals and complying superannuation funds (though the fund rate is 33.3%, not 50%).

Who qualifies for the 50% discount?

• Individual taxpayers (Australian residents) who have held the asset for more than 12 months
• Trusts that distribute gains to individual beneficiaries
• Self-managed superannuation funds in accumulation phase (at the reduced 33.3% rate)

Companies do not qualify for the 50% CGT discount, which is one reason many experienced investors hold property in individual names or family trusts rather than through corporate structures.

It is also important to flag that the 50% discount has been the subject of ongoing political debate. Herron Todd White’s March 2026 Month in Review notes that the May 2026 federal budget may bring changes to both the CGT discount and negative gearing rules, creating genuine uncertainty for investors currently weighing whether to sell or hold. If budget reforms do reduce the discount, properties sold before any legislative change would still access the existing 50% rate — timing your sale relative to any announcement therefore becomes a material financial decision.

For investors thinking through the timing dimension, the capital gains tax, timing and strategy guide for 2026 examines how the current policy environment should influence when you sell.

What Is the Main-Residence Exemption and Who Qualifies?

The main-residence exemption is the most significant CGT concession in Australian tax law. Under this rule, a capital gain on the sale of your primary home is generally fully exempt from CGT. CoreLogic data indicates the median Australian dwelling price reached approximately $779,000 in early 2026, meaning the exemption can shelter enormous gains for long-term homeowners.

To qualify for the full exemption, the property must:

1. Have been your primary place of residence for the entire ownership period
2. Not have been used to produce assessable income (i.e., never rented out)
3. Sit on land of 2 hectares or less (including the dwelling’s curtilage)

Partial main-residence exemption

The rules become more nuanced when a property has served dual purposes. If you rented out a room, ran a home-based business, or moved out for a period and rented the entire property, only a proportional exemption applies. The ATO calculates the taxable portion based on the share of time (and in some cases, floor area) the property was used to produce income.

The six-year absence rule

One important and often underutilised provision is the six-year absence rule. If you move out of your main residence and rent it out, you can still treat it as your main residence for CGT purposes for up to six years, provided you do not elect another property as your main residence during that period. This rule can be used repeatedly as long as you move back in between rental periods. According to ATO guidance, the property must have been your main residence before you moved out for the rule to apply.

Non-residents and the main-residence exemption

From 1 July 2020, Australian non-residents are no longer eligible for the main-residence exemption on properties sold while they are non-residents, with limited transitional exceptions. This is a significant trap for Australians living abroad and is a common area of costly mistakes.

What Are the CGT Implications in the Current Market Environment?

The 2026 property investment landscape has shifted materially. Herron Todd White’s March 2026 Month in Review reports that two RBA cash rate rises in early 2026 have lifted the cash rate to 4.10%, approaching what analysts describe as restrictive territory. The February rise was anticipated given persistent inflation; the March rise was connected to geopolitical uncertainty, particularly energy price volatility stemming from Middle East conflict.

APRA has simultaneously implemented debt-to-income caps for investors, tightening the lending environment for highly geared buyers. Despite this, investor activity in Melbourne has picked up noticeably. The same Herron Todd White review notes that Melbourne CBD investors are re-engaging, with median unit prices around $440,000 and median rents of approximately $650 per week, pushing gross yields to as high as 7.5% for some apartments. Inner-north suburbs including Preston, Reservoir, Brunswick West, and Coburg are delivering rental yields of 4.5 to 5% for units, while further outer-growth corridors like Mickleham and Wollert are also attracting attention from yield-focused buyers.

In this environment, understanding CGT becomes even more critical. Higher yields mean more investors are accumulating significant gains. If budget changes do wind back the CGT discount or negative gearing benefits, the after-tax returns on future sales will look very different from those investors are modelling today. Structuring your exit strategy now, before any legislative change, is prudent planning rather than speculation.

For investors who want to understand the full tax picture beyond CGT alone, the property investment tax guide on maximising deductions provides a comprehensive overview of depreciation, interest deductibility, and how to legally reduce your taxable income each year you hold the asset.

What Practical Strategies Can Reduce Your CGT Liability?

While CGT cannot generally be avoided, it can often be legally minimised with the right planning. Here are the most widely used strategies:

• Hold for at least 12 months to access the 50% discount. Selling in month 11 triggers full CGT on the gain; selling in month 13 halves it.
• Time the sale in a low-income year. If you plan to take a career break, retire, or reduce your working hours, selling in that year means the gain is taxed at a lower marginal rate.
• Offset gains with capital losses. If you hold other assets (shares, a second property) that are sitting at a loss, crystallising those losses in the same financial year reduces your net capital gain.
• Review your cost base carefully. Many investors underestimate eligible cost-base additions, particularly renovation costs and acquisition expenses. A thorough review with a tax accountant can materially reduce your gain.
• Consider the impact of depreciation. Depreciation claimed under Division 43 (building write-off) reduces your cost base, which increases your capital gain on sale. Understanding this trade-off before you sell is important.
• Superannuation contributions. In some cases, making additional concessional contributions to super in the year of sale can reduce your taxable income sufficiently to drop your marginal rate, reducing the CGT payable.

None of these strategies should be implemented without qualified tax advice specific to your situation. The interaction between CGT, income tax, and other concessions is complex, and the wrong approach can create larger problems than it solves.

How Does CGT Apply to Inherited Property in Australia?

Inherited property comes with its own CGT rules, and they are frequently misunderstood. According to ATO guidelines, you do not pay CGT when you inherit a property. CGT only becomes relevant when you eventually sell it.

The rules differ depending on when the deceased acquired the property:

• Pre-CGT property (acquired before 20 September 1985): if you sell within two years of the date of death, any gain is generally exempt. Sell after two years and CGT applies, using the property’s market value at the date of death as your cost base.
• Post-CGT property that was the deceased’s main residence: same two-year exemption window applies. If the property was also your main residence after you inherited it, the exemption may extend further.
• Post-CGT investment property: you inherit the deceased’s original cost base and acquisition date, which can mean a very large assessable gain when you sell.

This is an area where early legal and financial advice can make a substantial difference to the tax outcome for beneficiaries.

Conclusion

Capital gains tax on property is not something to plan around at settlement — it is something to factor in from the moment you buy. The 50% CGT discount, the main-residence exemption, the six-year absence rule, and the ability to offset capital losses are all powerful tools, but each has conditions, limits, and interactions with other parts of the tax system. With the 2026 policy environment in flux, including potential federal budget changes to the CGT discount and a tighter lending landscape following two RBA rate rises, the value of proactive planning has never been higher. Speaking with a qualified tax adviser and a property specialist before you sell is the single most effective step you can take to protect your return.