How to reduce capital gains tax on investment property in Australia?
Selling an investment property in Australia can deliver substantial wealth, but without proper planning, Capital Gains Tax can significantly erode your final payout. Because capital gains are added directly to your assessable income, an unmanaged sale can easily push you into the highest marginal tax bracket.
Knowing how to reduce the capital gains tax when selling an investment property in Australia allows you to take advantage of legitimate, legal avenues offered under Australian tax legislation to manage and lower your overall tax liability.
Whether you are an Australian resident or managing assets from overseas, structuring your sale strategically can save you tens of thousands of dollars. In this post, we discuss the key strategies you can use to reduce your tax liability and keep more of the proceeds from your property sale.
Key takeaways
- Capital gains tax is calculated on the profit from a property sale and added to your assessable income.
- Holding an investment property for at least 12 months may make eligible investors entitled to the CGT discount.
- Accurately recording purchase, ownership, improvement and selling costs can increase your cost base and reduce your taxable gain.
- The six-year absence rule may allow a former home to remain exempt from CGT while it is rented out.
- Eligible affordable housing investors may qualify for an additional CGT discount based on the qualifying rental period.
- Investors should organise valuations, ownership records, and cost base documents before signing a sale contract.
What is capital gains tax, and how does it apply to investment property?
Capital gains tax (CGT) is not a separate, stand-alone tax in Australia. It is simply the mechanism the Australian Taxation Office (ATO) uses to include a profit from selling an asset, such as an investment property, in your assessable income for that financial year. Once added to your income, the gain is taxed at your marginal tax rate.
Key facts to understand:
- CGT generally applies to property acquired on or after 20 September 1985. Property bought before that date typically falls outside the CGT regime entirely.
- Your capital gain is calculated as the sale price minus the cost base.
- The cost base includes more than the purchase price, covering costs of buying, holding and selling the property, which is why accurate record-keeping matters.
- CGT is triggered by the date you sign the contract of sale, not the settlement date, which can affect which financial year the gain falls into.
- The gain (or loss) must be reported on your income tax return for the relevant financial year.
The 50% CGT discount for investment property owners
The 50% CGT discount has long been the primary mechanism for reducing tax liabilities on long-term assets. While it remains a core tax-minimisation strategy today, new property tax legislation will replace this flat discount with updated rules taking effect from 1 July 2027.
Who qualifies for the discount?
If you are an Australian resident individual or trust and you have owned the investment property for at least 12 months before selling, you are currently entitled to a 50% discount on the capital gain. In practice, only half of your gain is added to your taxable income. This treatment applies in full to any property sold under a contract dated before 1 July 2027.
How do discount rates differ by ownership structure?
Self-managed super funds (SMSFs) generally receive a one-third discount rather than 50 per cent, and typically pay a maximum rate of 15% tax on capital gains, or no CGT at all if the asset is sold while the fund is in pension phase.
Companies are not eligible for any CGT discount, which is one reason many investors choose to hold property personally, in a trust, or through superannuation rather than through a company structure. Importantly, the 2027 reforms described below do not apply to companies or superannuation funds, so SMSF treatment is unaffected.
The CGT discount reform is now law
The new CGT rules have been passed into law and will apply from 1 July 2027. For Australian resident individuals and trusts, the existing 50% CGT discount will be replaced with:
- Indexation of the property's cost base for inflation
- A minimum 30% tax rate on the inflation-adjusted capital gain
Capital growth earned before 1 July 2027 will generally remain eligible for the existing 50% discount. The new rules will apply only to growth occurring from 1 July 2027 onwards. Investors holding property on this date should therefore obtain an accurate valuation and maintain clear records.
The contract date is also important. Contracts signed before 1 July 2027 will generally follow the current rules, while contracts signed on or after this date will be subject to the transitional rules. Investors planning to sell around this period should consult a registered tax adviser. You can read our full breakdown of the 2026 property tax changes for more detail.
Know your exact CGT position before exchanging contracts
Avoid unexpected tax hits at the end of the financial year. Plug your property and income details into our free CGT calculator to calculate your net capital gain and plan your proceeds early.
Different ways to reduce CGT when selling an investment property
Beyond the CGT discount, there are several other legitimate strategies property investors can use to reduce, defer or avoid capital gains tax.
Maximise your 5-element cost base
Your capital gain is calculated as the sale price minus your property's cost base. Increasing your cost base directly reduces your taxable capital gain. To ensure you do not miss legitimate deductions, track costs across all five ATO-approved categories:
- Element 1, acquisition costs: The purchase price or the market value of the property given to acquire the asset.
- Element 2, incidental costs: Eligible expenses associated with acquiring or selling the property, such as stamp duty, conveyancing and legal fees, buyer's agent fees, valuation fees, real estate agent commissions and advertising costs.
- Element 3, ownership costs: Certain costs of owning the property, such as council rates, land tax, home loan interest rates, insurance, repairs and maintenance, may be included in the cost base. However, you cannot include any amount you have already claimed, or were eligible to claim, as a tax deduction. These costs are also excluded when calculating a capital loss.
- Element 4, capital expenditure to increase or preserve value: Eligible expenditure on capital improvements, such as structural renovations, extensions and landscaping. Routine repairs and maintenance are generally treated differently.
- Element 5, expenditure relating to ownership or title: Capital expenditure incurred to establish, preserve or defend your ownership of, or rights over, the property.
The treatment of individual expenses depends on the property's acquisition date, use and whether deductions were available. Keep supporting records and ask a registered tax agent to confirm which costs can be included.
Use the main residence exemption
- Six-year absence rule, Section 118-145: If the property was genuinely your main residence before you moved out and rented it, you may choose to continue treating it as your main residence for CGT purposes for up to six years. If all requirements are met, the property may remain fully exempt from CGT. However, you generally cannot claim another property as your main residence during the same period.
- First used to produce income rule, Section 118-192: If a property that qualified for the full main residence exemption is first rented or used to generate income after 20 August 1996, you may be treated as having acquired it at its market value on that date. This value is used to calculate any taxable capital gain when you later sell the property. A professional retrospective valuation can help establish the property's market value and preserve the tax-free growth earned while it was your home.
Optimise personal deductible superannuation contributions
Making personal deductible superannuation contributions during the same financial year you exchange contracts is an effective strategy to absorb a significant portion of your taxable capital gain.
- Concessional cap: Concessional (pre-tax) contributions are subject to annual caps set by the ATO (indexed periodically). Claiming a personal tax deduction on super contributions directly reduces your total assessable income, mitigating the marginal tax impact of your property sale.
- Carry-forward unused caps: If your Total Super Balance was under $500,000 on 30 June of the previous financial year, you can utilise unused concessional cap amounts from up to the past 5 rolling financial years. Contributing a portion of your property sale proceeds into super under these rules allows that amount to be taxed at the 15% super concessional rate rather than your higher personal marginal tax rate.
- Notice of intent requirement: To claim the tax deduction, you must lodge a valid notice of intent to claim a tax deduction (ATO Form NAT 71121) with your super fund and receive an official acknowledgment BEFORE lodging your tax return for that financial year or rolling over/withdrawing the funds.
Offset gains with capital losses
If you have made a loss on another asset, such as shares, managed funds or another property, within the same financial year, that loss can be used to offset a capital gain elsewhere. This is a common strategy when investors are rebalancing a broader portfolio alongside a property sale.
Capital losses can only offset capital gains, not your regular salary or wage income. If your losses exceed your gains in a given year, the unused portion is not lost. It can be carried forward indefinitely and applied against capital gains in future financial years.
Time your sale strategically
Because a capital gain is added to your assessable income, the financial year in which you sell can materially affect how much tax you pay. Selling in a year when your other income is lower, for example, during a career break, a reduction in work hours, or a transition into retirement, can reduce the overall tax impact of the gain.
Since the sale is triggered by the contract date rather than settlement, this is worth planning around with your adviser well before you list the property. With the CGT reforms starting 1 July 2027, the exact contract date now also affects which discount rules apply, making timing even more important.
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Consider the affordable housing discount
Investors who rent residential property through a registered Community Housing Provider (CHP) at below-market rates can claim an extra CGT discount of up to 10%, raising their total discount up to 60%. To qualify, you must hit a 3-year (1,095-day) minimum threshold of affordable housing use.
If you used the property for affordable housing for only part of your ownership, the extra 10% discount is scaled down based on that proportion.
Affordable housing discount example
If you own a property for 10 years (3,650 days) and rent it as affordable housing for 5 years (1,825 days):
- Proportion: 1,825 ÷ 3,650 = 50% of total ownership time.
- Extra discount: 50% × 10% = 5% additional discount.
- Total CGT discount: 50% (standard) + 5% (affordable housing) = 55% total discount.
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Foreign residents and the 50% CGT discount
Foreign and temporary residents are subject to different CGT discount rules based on when the property was acquired and their Australian tax residency during ownership.
Property acquired after 8 May 2012
Your eligibility for a CGT discount depends entirely on your Australian tax residency history during your period of ownership:
- Foreign resident for the entire period: If you remained a foreign or temporary resident for the whole duration of ownership, you are ineligible for any CGT discount (0%).
- Partial Australian residency: If you were an Australian resident for part of the ownership period but a foreign resident when you exchanged contracts to sell, you may qualify for an apportioned (pro-rata) discount. This discount is calculated based strictly on the number of days you were an Australian tax resident relative to your total ownership period.
Property acquired on or before 8 May 2012
If you purchased taxable Australian property on or before 8 May 2012, you can preserve the discount for gains accrued prior to 9 May 2012 using one of two ATO-approved calculation methods:
- Pro-rata method: Apportions the 50% discount based on the number of days you were an Australian resident after 8 May 2012.
- Market value method: If you were a foreign or temporary resident on 8 May 2012, you can use the property's market value as of that date. Capital gains built up before 9 May 2012 retain the full 50% discount, while subsequent growth is adjusted accordingly.
If both methods apply to your situation, you may choose the option that results in the lower tax liability. Because foreign residents are also generally ineligible for the main residence exemption when selling Australian residential property, keeping detailed residency logs and property valuation records before exchanging contracts is essential. Always consult a registered tax agent to confirm your tax position.
Main residence exemption restriction
Under current ATO law, foreign residents generally cannot claim the main residence exemption when selling Australian residential property, unless they satisfy specific requirements under the strict "life events" hardship test.
Get your CGT records ready before you sell
Capital gains tax planning works best before you sell, not after settlement. If you own an investment property, former home, or long-held rental property, your tax result will depend on the records you gather before signing a contract. Once signed, your tax position is fixed.
Preparing early allows you to:
- Maximise your cost base: Track purchase costs, legal fees, holding expenses, renovations, and selling fees to lower your taxable gain.
- Lock in exemptions: Gather valuation records and occupancy dates for the six-year absence rule or the first used to produce income rule.
- Plan tax-saving contributions: Calculate personal deductible super contributions and unused caps to offset the gain.
Organising your records now ensures your tax adviser can structure the timing of your sale to save you money.
Frequently asked questions
1. Do I have to pay CGT immediately upon signing the contract, or at settlement?
Even though your CGT liability is calculated based on the contract date rather than the settlement date, you do not pay the tax instantly. CGT is reported and paid as part of your annual income tax return for the financial year in which the contract was signed. For example, if you sign a contract in May (FY2025–26) but settlement occurs in August (FY2026–27), the gain belongs in your FY2025–26 tax return.
2. How do depreciation deductions during ownership affect my CGT when I sell?
If you claimed capital works deductions (building write-offs under Division 43) or depreciation on plant and equipment during your ownership, the ATO requires you to reduce your property's cost base by those total claimed amounts. While these deductions save you tax during ownership, they increase your net capital gain when you sell.
3. Can I use superannuation contributions to offset my capital gains tax?
Yes. You can make personal deductible superannuation contributions in the financial year you sell the property to lower your total assessable income. Subject to your concessional contribution caps (including any accrued carry-forward concessional caps from up to five prior years), this strategy effectively reduces the total income bracket your capital gain falls into.
4. What happens to my cost base if I inherit an investment property?
The rules depend on when the original owner acquired the property and whether it was their main residence. For a pre-CGT asset (bought before 20 September 1985), your cost base is typically the market value of the property at the date of the original owner's death. For a post-CGT asset, you generally inherit the original owner's cost base (what they paid plus their eligible cost additions), unless the property was their main residence when they died and wasn't generating rental income, in which case it resets to market value at the date of death.
5. Does transferring an investment property to a spouse or trust avoid CGT?
No. Transferring full or partial ownership of an investment property to a spouse, family member, or family trust is treated by the ATO as a "CGT event" (a change of beneficial ownership). Even if no money changes hands, CGT is calculated based on the fair market value of the property on the transfer date.
6. How does the "6-year rule" work if I rent out my property for multiple separate periods?
The 6-year limit applies cumulatively for each period the property is continuously rented out without you living in it. If you move back into the property and re-establish it as your genuine main residence, the 6-year timer resets. You can then move out and rent it again for another period of up to 6 years tax-free.
Final thoughts
Minimising your capital gains tax on an investment property in Australia isn't about shortcuts; it is about making well-timed, informed decisions throughout your ownership and before you list.
By maximising your cost base records, taking advantage of main residence exemptions, and strategically timing your contract signing date around your personal income and legislative changes, you can keep significantly more of your property's equity. Because tax laws and personal circumstances vary, always consult a registered tax agent or accountant before making any property transaction decisions.
The team at ZedPlus is here to ensure your loan setup works hand-in-hand with your tax goals. Whether you are looking to release equity for your next purchase, restructure existing loans for maximum tax efficiency, or secure competitive refinancing before listing, our mortgage specialists ensure your setup supports your long-term wealth creation.
Ready to plan your next property move? Book a call with our loan specialists today to review your loan structure and secure tax-effective outcomes before you list. Credit assistance is subject to eligibility and lender criteria.
