Australian real estate remains a major component of personal and investment wealth for many individuals and families. Yet buying or selling property in Australia involves navigating a complex landscape of tax implications. From stamp duty and land tax to capital gains tax, negative gearing, and residency rules, each stage of property ownership triggers financial consequences that can significantly affect returns. Understanding how each tax works and interacts can make the difference between a rewarding transaction and an unexpectedly costly one.
Capital Gains Tax: What It Is and When It Applies
Capital Gains Tax (CGT) in Australia is not a standalone levy but part of your ordinary income tax system. It applies when you sell or otherwise dispose of property acquired after 20 September 1985 and a capital gain is realised. The tax is triggered by what is known as a “CGT event,” the most common being the sale of an investment property.
To calculate CGT you must determine your cost base (which includes purchase price, stamp duty, acquisition and selling costs, and capital improvements) and your capital proceeds (sale price minus deductions). The difference is your capital gain or capital loss.
If you incur a net capital gain in a financial year, that gain is added to your taxable income and taxed at your applicable marginal income tax rate. However if you are an Australian resident individual or certain trusts or super funds and have held the property for at least 12 months, you may qualify for a CGT discount of 50 per cent (for individuals and trusts) or 33.33 per cent (for complying super funds). Short‑term ownership of less than 12 months does not qualify for any discount, meaning the entire gain is taxed at your normal rate.
Foreign residents no longer enjoy the CGT discount and are often subject to withholding tax of up to 15 per cent at settlement on the sale of Australian property, regardless of the sales price.
Main Residence Exemption and the Six‑Year Rule
If the property you sell is your principal place of residence, it may be entirely exempt from CGT under the main residence exemption. To qualify, you generally must have lived in the dwelling for the entire period of ownership and not used it for income‑producing purposes such as renting or business.
You may still qualify for a partial exemption in specific circumstances. For example, if you rented out the property for a time or used part of it for business, you might apply the six‑year rule. Under this rule, you can treat a property as your primary residence for up to six years while it’s rented out and still retain a full exemption provided you don’t treat another home as your main residence during that period. The exemption is prorated if you live in the home for part of the ownership period.
Calculating the Cost Base and Eligible Deductions
A crucial step in determining your CGT liability is accurately calculating your cost base. This includes not only the purchase price but also stamp duty, legal and conveyancing fees, inspection costs, renovation and improvement expenses, and selling costs such as real estate agent commissions and advertising.
Capital works deductions for buildings and structural improvements must not be included in the cost base and are handled separately for depreciation purposes. Investment property owners may also deduct ongoing expenses related to interest on loans, property management fees, repairs and maintenance—this is where negative gearing comes into play.
Negative Gearing and Rental Income
Negative gearing occurs when rental income is less than the deductible expenses, notably mortgage interest. In Australia, investors can offset these net property losses against other income sources, such as salary or business income. Many individual investors find this strategy advantageous as it reduces taxable income in the short term while capital growth is anticipated in the longer term.
While politically controversial, negative gearing remains intact in its current form. Proposed reforms have included limiting eligibility or reducing CGT discounts, but as of mid-2025 no policy changes have been implemented. Analysts warn that reform could reduce affordability and investment incentives, especially for lower and middle‑income earners.
Stamp Duty, Land Tax and Ongoing Property Taxes
Buying property in Australia typically triggers stamp duty, a state or territory tax based on the transaction’s value. The rate and thresholds vary across jurisdictions and are sometimes subject to exemptions or concessions, particularly for first home buyers.
Land tax is levied annually on the unimproved value of all taxable land owned above a certain threshold. This is charged at state level and usually exempts the owner‑occupied principal residence. Foreign owners may face surcharge rates. Local councils also impose rates on landowners for municipal services and infrastructure regardless of usage.
Foreign Residents and Tax Withholding
Foreign nationals or those deemed non-residents for tax purposes sell Australian real estate must contend with specific withholding obligations. Since 2025 a mandatory withholding of 15 per cent applies to every sale, regardless of value. This ensures that the ATO can collect tax on capital gains even if the seller is offshore. In some cases, qualified taxpayers may apply to reduce the withholding rate through official variation applications or clearance certificates.
Foreign sellers do not benefit from the CGT discount even if they held the property for more than 12 months.
Concessions, Exemptions and Strategic Planning
Various concessions exist to reduce CGT liabilities. These include small business CGT concessions, main residence exemptions, and in some cases higher discounts for affordable housing investments under certain schemes.
For individuals holding property more than a year, the 50 per cent CGT discount is key. For superannuation investors it is 33.33 per cent. Companies do not qualify for a CGT discount and therefore pay full tax at corporate rates, typically between 25 and 30 per cent.
Planned timing of sale, holding period, residency status, and use of property (investment or personal) are all powerful levers. Property held longer than 12 months, owner‑occupied primary residences, and properties owned by individuals or trusts all receive different tax treatments.
Recent Policy Proposals and Reform Landscape
As of mid‑2025, reforms remain under discussion but not yet enacted. Bodies like the McKell Institute have proposed recalibrating CGT discounts with a 70 per cent discount for new apartments and just 35 per cent for established dwellings to incentivise new supply and address housing shortages. Opposition parties and some think tanks have advocated reducing or abolishing both the negative gearing allowance and the CGT discount altogether.
Major financial institutions like Westpac have also submitted recommendations to restore pre‑1999 CGT indexing or remove the discount entirely, arguing that the current system unduly benefits higher‑wealth individuals and fosters inefficient investment strategies. However, as of now there has been no legislative change.
