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 blog post, we discuss the key strategies you can use to reduce your tax liability and keep more of the proceeds from your property sale.

What is capital gains tax, and how does it apply to investment property?

CGT is not a separate tax. It forms part of Australia's income tax system. When a CGT event occurs, a taxpayer works out the capital gain or loss and includes any net capital gain in assessable income for the relevant financial year, as set out by the Australian Taxation Office (ATO).

• CGT generally applies to property acquired on or after 20 September 1985, although special rules can affect pre-CGT property.
• A capital gain is generally the capital proceeds from the sale less the property's cost base.
• The cost base can include eligible acquisition, ownership, improvement and disposal costs, subject to specific rules.
• For a standard property sale, the CGT event generally occurs when the sale contract is entered into, not at settlement.
• The gain or loss is reported in your income tax return for the financial year in which the CGT event occurs.

The 50% CGT discount for investment property owners

Australian resident individuals, trusts, companies, and super funds are each subject to distinct Australian Taxation Office (ATO) rules when applying Capital Gains Tax (CGT) concessions to investment property sales:

• Individuals: Australian resident individuals can access a 50% CGT discount on properties held for at least 12 months prior to the contract date. This discount is applied only after subtracting all current-year and carried-forward capital losses from the gross capital gain.
• Trusts: Trusts are generally eligible for the 50% CGT discount for properties held over 12 months. However, final eligibility and tax outcomes depend heavily on the trust deed, the specific trust structure, and how capital gains are distributed to beneficiaries.
• Companies: Companies are ineligible for the CGT discount. Any net capital gain is taxed in full at the applicable corporate tax rate.
• Complying super funds (including SMSFs): Super funds in the accumulation phase receive a 33.33% (one-third) discount on assets held for over 12 months, which effectively lowers the CGT rate from 15% to 10%.
• Retirement-phase income streams: Property sales within an SMSF are not automatically tax-free simply because the fund pays a pension. Tax exemptions depend strictly on Exempt Current Pension Income (ECPI) rules and the fund's specific operational setup.

Ways that may 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 five-element cost base

Keeping complete records can help ensure eligible expenditure is included in the cost base. The five elements broadly cover:

• Money or property given to acquire the asset.
• Incidental costs of acquiring or disposing of it, such as eligible stamp duty, legal fees and selling costs.
• Certain ownership costs, where the CGT rules allow them, and the amounts have not been deducted or cannot be deducted.
• Capital expenditure that increases or preserves the asset's value.
• Capital expenditure to establish, preserve or defend ownership or rights over the asset.

The treatment depends on when the property was acquired, how it was used and whether deductions were available. Amounts cannot generally be counted twice as both an income-tax deduction and a cost-base amount.

Check the main residence rules

If the property was genuinely your main residence before you moved out, you may be able to choose to continue treating it as your main residence for CGT purposes. Where it is used to produce income, the absence rule can apply for up to six years at a time. You generally cannot treat another property as your main residence for the same period, apart from limited overlap rules.

If a dwelling that qualified for the full main residence exemption is first used to produce income after 20 August 1996, the market-value rule may reset its cost base at that time. A defensible valuation and occupancy records are important.

Consider deductible personal super contributions

You may be able to make a personal super contribution and claim it as a tax deduction, reducing your taxable income in the year of the property sale. This can lessen the overall income tax impact, but note that the deduction reduces your total taxable income; it does not offset the capital gain directly.

Before contributing, you will need to consider:

• Contribution caps: The concessional (before-tax) cap applies to the total of employer contributions, salary sacrifice, and any personal deductible contribution combined, not just the amount you contribute yourself. The cap is currently $32,500 for the 2026-27 financial year, up from $30,000 in 2024-25 and 2025-26, so check how much headroom you actually have left before assuming you can use the full amount.
• Carry-forward eligibility: If your total super balance was under $500,000 at 30 June of the previous financial year, you may be able to use unused concessional cap amounts from up to the past 5 financial years, in addition to your current year's cap. Unused amounts expire after 5 years, and the oldest unused amounts are applied first.
• Contributions tax: Deducted contributions are taxed at 15% within the fund, or 30% if your income plus concessional contributions exceed the relevant higher threshold (Division 293 tax).
• Cash flow: The contribution needs to actually leave your bank account, so make sure this doesn't create a shortfall elsewhere.
• Notice of intent requirement: To claim the deduction, you must lodge a valid Notice of Intent to Claim a Deduction (ATO Form NAT 71121) with your super fund and receive their written acknowledgment before you lodge your tax return for that financial year, and before you roll over or withdraw the contribution, or certain other fund events occur. Missing this timing can invalidate the deduction entirely.

Given the caps, timing rules, and interaction with your overall tax position, get advice tailored to your circumstances before contributing.

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 the contract carefully

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.

Check 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.

Foreign residents and the 50% CGT discount

Foreign and temporary residents face different CGT discount rules. For gains accruing after 8 May 2012, access to the discount can be reduced according to Australian tax residency periods. Special calculations may apply to assets held before that date.

Foreign residents are also generally unable to claim the main residence exemption when the CGT event occurs, unless the statutory life-events exception applies. That exception has strict conditions, including a residency-period limit and specified life events. Specialist tax advice is important before signing a sale contract.

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 6-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.

Plan ahead to reduce capital gains tax on your investment property

Reducing CGT is not about shortcuts. It is about applying the rules correctly, keeping the right records and making informed decisions before entering the sale contract.

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.