Many Australian property investors want to know how to minimise capital gains tax before they sell. In practice, that usually means reducing, deferring or legally exempting CGT rather than removing it altogether, using strategies such as the main residence exemption, the six-year rule, the 50 per cent CGT discount, capital loss offsets, accurate cost base records and smart sale timing.
If you own an Australian investment property and want to plan your tax position before selling, this guide focuses on the CGT rules and exemptions that can make the biggest difference to your net profit. It explains how the main residence exemption and six-year rule work, how to increase your cost base, when capital losses can offset gains, what the Federal Budget changes from 1 July 2027 mean, and how rules differ for foreign residents and super funds.
In 2026, this is a key question. Current ATO rules still give eligible Australian resident individuals the 50 per cent CGT discount after 12 months of ownership, but from 1 July 2027, the Government will replace that discount with an inflation-based method and add a minimum 30 per cent tax rate on real capital gains. With those changes approaching, preparing your CGT records and sale strategy before you sell can have a direct impact on how much profit you keep.
What Is Capital Gains Tax And Why Does It Matter In 2026?
Capital gains tax is the tax rule that applies when you make a capital gain from an asset. For property investors, this often happens when an investment property sells for more than its cost base. In Australia, it generally applies to profits from selling assets acquired after 20 September 1985. Assets owned before 20 September 1985 are outside the CGT regime. The Australian Taxation Office includes the gain in your income tax position. You report it on your tax return. It is not a separate tax.
For property investors, capital gains tax can affect:
The profit left after you sell an investment property.
Your taxable income for the financial year.
Your marginal tax rate if the gain lifts your income.
The best time to sell assets.
How a capital loss can reduce a capital gain.
The records needed to prove your cost base.
Whether you qualify for a full or partial CGT exemption.
This matters in 2026 because current CGT rules still apply. Investors also need to plan for the Budget changes due from 1 July 2027. A sale before that date could have a different tax result to a sale after the new rules start. Review your cost base, ownership period, market value records and exemption options before you sign a contract.
How To Minimise Capital Gains Tax With The Main Residence Exemption
The main residence exemption is one of the main ways to minimise capital gains tax on property. If a property was your main residence and primary residence for the whole time you owned it, you will generally not pay CGT when you sell. This rule matters when a former home later becomes an investment property.
A property is more likely to qualify as your main residence when you can show:
You and your family lived in the property.
Your personal belongings were kept there.
Your mail was sent to that address.
The property address was on the electoral roll.
The property had services in your name.
You did not treat another property as your main residence for the same time.
The property was not used to produce rental income for the whole time.
A qualifying main residence is generally exempt. If you rented out part of the home, used part for business or claimed deductions, you will usually receive only a partial exemption, and certain exemptions may be limited in these cases. Keep clear records from the date you move out. Also, record when you earn rental income or first use the property for tax purposes.
How The Six-Year Rule Helps Minimise Capital Gains Tax On A Former Home
The six-year rule helps investors minimise CGT when a former main residence becomes a rental property. Under this rule, you will treat your former home as your main residence for up to six years after you move out for CGT purposes. The property must have been your main residence first.
This rule is useful when investors move for work, upgrade to another home or rent out a former family home that was their primary place of residence. Renting it out can bring in extra money and, if the property qualifies, you may be able to minimise paying CGT for the covered period. This can make a large difference when the property has risen in market value.
The six-year rule does not let you minimise paying CGT on a property that was always an investment property. You also need to be careful if you buy and live in another home. As a general rule, the main residence exemption applies to only one property at a time.
Six-Year Rule Scenario | Likely CGT Outcome |
|---|---|
You lived in the property first, then rented it out for less than six years. | The property will usually qualify for the main residence exemption for that time. |
You rented the property out before ever living in it. | The six-year rule will not apply to the earlier rental period. |
You rented out your former home for more than six years. | CGT will usually apply after the six-year limit. |
You claimed another home as your main residence for the same time. | You will usually need to choose which property receives the exemption. |
You sold your former home within six years. | You may not need to pay capital gains tax if the full exemption rules are met. |
How To Reduce A Capital Gain By Increasing Your Cost Base
Your cost base is a key part of any CGT calculation. It usually includes the purchase price. It can also include some costs linked to buying, holding and selling the property. A higher cost base will reduce your taxable capital gain.
For property investors, records matter. Keep purchase contracts, legal fees, stamp duty records, agent fees, ads, valuation reports and capital improvement invoices. These records help your accountant work out the correct capital gain. If you cannot prove a cost, it will be harder to include it.
A market valuation can also matter when a former main residence first becomes a rental property. In many cases, the future capital gain will be worked out from the market value at that time. It will not always use the original purchase price.
Cost Base Item | How It Helps Reduce CGT |
|---|---|
Purchase price | Forms the starting point for the property’s cost base |
Stamp duty and conveyancing fees | Usually increase the cost base when linked to the purchase |
Legal fees | Support the cost base when they relate to buying or selling |
Agent and advertising fees | Reduce the gain when they relate to the sale |
Capital improvements | Increase the cost base when they improve the property |
CGT valuation report | Supports market value when a property changes from private use to rental use |
Sale contract and settlement statement | Confirm the sale price and selling costs |
How Capital Loss Can Offset Capital Gains Tax
A capital loss can reduce CGT when you sell another asset for a profit. For example, you could sell shares, funds or another property at a loss in the same financial year. That loss can reduce your total capital gains before you work out your taxable capital gain.
Property investors should understand these capital loss rules before selling:
Capital losses offset capital gains, not normal salary income.
A capital loss can reduce gains made in the same financial year.
Unused net capital losses can carry forward to future years.
You need to sell the asset before you claim the loss.
A paper loss on an asset you still own will not reduce CGT.
Some assets, such as collectables, have special rules.
Capital losses usually apply before the CGT discount.
This strategy can help investors who hold assets that have dropped in value. Selling a poor-performing asset in the same financial year as a profitable investment property sale can lower the net capital gain. The order of the CGT calculation matters. Seek professional advice before selling assets only for tax reasons.
What The Federal Budget Changes Mean For Investment Property Owners
The Federal Budget changes make 2026 an important planning year for investment property owners, especially with proposed changes tied to the 1 July 2027 reforms. The 50 per cent CGT discount still applies to eligible Australian resident individuals who own an asset for at least 12 months. From 1 July 2027, the Government will replace the 50 per cent CGT discount with inflation indexation. It will also add a minimum 30 per cent tax rate on real capital gains. These rules will apply to capital gains that accrue from 1 July 2027 when the gain is realised. Property investors should review valuations, cost base records and sale timing before the new rules begin, because understanding the future rules can help reduce the eventual tax bill before sale timing decisions are made.
CGT Issue | 2026 Position | What Property Investors Should Consider |
|---|---|---|
50 per cent CGT discount | Still applies to eligible Australian resident individuals after 12 months of ownership | Selling before 1 July 2027 will use the current CGT framework. |
New CGT rules | Start from 1 July 2027 | Investors should understand how future gains will be worked out. |
Minimum 30 per cent tax rate | Applies to real capital gains from 1 July 2027 | Investors should model the result before selling. |
Inflation indexation | Replaces the flat 50 per cent discount for future gains | Long-term holders will need clear records and valuation support. |
New builds | Investors in new builds will choose between the 50 per cent CGT discount and the new rules | New build investors should compare both methods before sale. |
Existing investment property | Current and transition rules will affect the final tax result | A CGT valuation can help split pre-reform and post-reform value changes. |
Tax planning | Sale timing will matter more | Investors should seek professional advice before signing a sale contract. |
Foreign Residents, Super Funds And Other CGT Exemption Rules
Foreign residents need to take extra care before selling Australian property. The main residence exemption is much more limited for foreign residents, unless a life events test applies. Foreign residents also need to check capital gains withholding. This affects many Australian property sales. A person’s tax residency status can change their CGT exemption, discount and withholding rules.
Super funds and SMSFs follow different CGT rules to individual property investors. A complying SMSF can pay up to 15% on income and 10% on capital gains, and it usually receives a one-third CGT discount when it has owned an asset for at least 12 months. This can reduce the tax rate on eligible capital gains. Self-managed super funds commonly pay a 15% tax rate on capital gains before any eligible discount or pension-phase treatment. Assets sold in the pension phase can also receive better tax treatment. These rules are complex. Seek professional advice before selling property through a super fund, trust, company or cross-border structure to weigh the tax benefits and risks.
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 your ownership history. It will also depend on market value records, cost base evidence and how the property was used.
Before selling, speak with your accountant or registered tax adviser about your CGT position and whether these options fit your broader investment income and tax return position. For property reports, Duo Tax can assist with CGT valuations and tax depreciation schedules prepared for Australian property investors.
Frequently Asked Questions About How To Minimise Capital Gains Tax
Can You Minimise Capital Gains Tax On An Investment Property?
Only if an exemption applies, such as the main residence exemption or six-year rule. You may also be able to minimise capital gains tax if the property later becomes your primary residence and qualifies under those rules. If no exemption applies, you will usually need to pay tax on the gain.
Does The 50% CGT Discount Still Apply In 2026?
Yes. Eligible Australian residents still receive it after holding an asset for at least 12 months.
What Happens To The CGT Discount From 1 July 2027?
It will be replaced by inflation indexation, with a minimum 30 per cent tax rate on real capital gains.
Can The Six Year Rule Remove CGT On A Rental Property?
Yes, if the property was your main residence before you rented it out and the rules are met.
When Should Property Investors Get A CGT Valuation?
When a property changes use, such as when a main residence becomes a rental property.
What Is The Best Way To Minimise CGT Before Selling?
The aim is often to reduce your tax bill rather than fully minimise paying CGT, so check exemptions, review your cost base, use capital losses and speak with a registered tax adviser.
