What CGT Is and How It Works on Australian Property
Capital gains tax is not a separate tax in Australia — it is a component of ordinary income tax. When you sell an investment property for more than you paid, the profit is added to your assessable income in that financial year and taxed at your marginal rate. The Australian Taxation Office treats the capital gain as income, which means a large sale in a single year can push an investor into a higher tax bracket, compounding the effective rate well beyond expectations. This interaction between CGT and income tax brackets is one of the most commonly misunderstood elements of property investment in Australia.
Individuals who hold a property for more than 12 months qualify for a 50% reduction on the assessable gain before it is added to income. For a property purchased for $600,000 and sold for $900,000, the $300,000 gross gain becomes $150,000 of assessable income — a material difference. Superannuation funds, including self-managed super funds, attract a one-third discount rather than 50%, which is a structural reason many investors prefer to hold higher-growth assets outside super. Companies receive no CGT discount at all, making the ownership structure decision critical before purchase rather than after.
For additional market context, see WealthWatchPro retirement and tax planning.
The 2026 reforms have sharpened scrutiny on how the cost base is calculated. The cost base includes the original purchase price, stamp duty, legal fees, and certain capital improvements — but not repairs or ongoing maintenance, which are deductible against rental income in the year incurred. Investors who have been sloppy with records face a higher assessed gain than the true economic gain warrants. The ATO's data-matching capability has expanded substantially: it now cross-references property sale data from state revenue offices, title registries, and conveyancers to identify discrepancies between reported gains and transaction records. For the full breakdown of how CGT interacts with your overall property tax position, see the Australian Property Tax Guide.
The cost base rules also allow investors to include borrowing costs incurred during construction or before the property first earned income. This is frequently overlooked. Investors who built or substantially renovated an investment property and who kept loan interest records during the non-income-earning period can legitimately add these costs to the base, directly reducing the assessed gain at sale.
The significant CGT changes introduced in 2026 have altered the calculus for investors deciding when and how to sell. Capital gains tax has become a hot topic in property amid the introduction of these significant reforms, with eligibility conditions and structural requirements now under greater scrutiny for a range of investor types.
For Australian residents, the timing of settlement relative to the financial year end remains one of the most powerful and legal levers available. Settlement date — not the date contracts are exchanged — determines which financial year the gain falls into. An investor who exchanges in May but settles in July pushes the tax event into the following financial year, potentially allowing 12 additional months of income averaging, strategic deductions, or salary sacrifice to reduce the marginal rate at which the gain is taxed. With the current market correction delivering reduced gains compared to peak valuations, some investors may find 2026–27 is a more advantageous year to crystallise gains than 2025–26, depending on their other income.
For many Australian investors, the decision of when to sell is now as consequential as the decision of what to sell — CGT timing and structure can shift the after-tax return on a single property transaction by tens of thousands of dollars, yet it remains the most under-planned element of the investment exit.
CGT and Property Title Structure: What Owners Often Miss
The legal ownership structure of a property — whether Torrens Title freehold, strata title, or company title — has a direct bearing on CGT liability, particularly at the point of sale. Strata-titled properties include ownership of a lot within a larger scheme, with shared ownership of common property. When strata lots are sold, the CGT event applies to the lot itself, and any compensation received for surrender of common-property rights (for example, in a strata wind-up or collective sale) may constitute a separate CGT event entirely, with its own cost base and discount eligibility. This is a specific area of complexity that the ATO has flagged in recent years as collective strata sales become more common in ageing apartment blocks. For a detailed explanation of how title type affects property rights and obligations, see Strata Title vs Torrens Title Explained.
Torrens Title freehold properties — the most common structure for houses and many townhouses — generally present a simpler CGT calculation, but the cost base rules still catch investors who fail to keep full records of capital improvements over a long holding period. A kitchen renovation undertaken in 2018, a bathroom upgrade in 2021, and a deck addition in 2023 each add to the cost base if they represent capital improvements rather than repairs. The distinction between a repair (deductible in the year of expenditure) and a capital improvement (added to the cost base) is a matter of degree, and the ATO provides specific guidance on this — guidance that is worth revisiting before any sale, given the volume of renovation activity that occurred during the pandemic years. Investors who used a depreciation schedule for these improvements must account for the interplay between claimed depreciation deductions and the adjusted cost base at sale.
Practical Strategies for Investors Facing a CGT Event in 2026–27
Several concrete strategies are available to Australian property investors seeking to reduce CGT liability ahead of or immediately following a 2026 sale. First, maximise pre-sale deductible expenditure. Legitimate repairs, property management fees, and loan interest incurred before settlement reduce the net taxable income in the year of sale, partially offsetting the capital gain added to assessable income. Second, accelerate superannuation contributions. Concessional contributions reduce assessable income and can absorb part of the capital gain that would otherwise be taxed at the highest marginal rate, with carry-forward provisions available to eligible investors depending on their super balance and prior year contributions.
Selling property during a period of market softness — as parts of Sydney have experienced,
This article was produced with AI assistance and reviewed for accuracy. Content is for informational purposes only and does not constitute financial or property investment advice.
