Key Takeaways
- Australia’s capital gains tax system is changing from 1 July 2027.
- The current 50 per cent CGT discount for individuals, trusts and partnerships will be replaced by cost base indexation for gains accruing from the start date.
- A 30 per cent minimum tax rate will apply to real capital gains under the new system, subject to the rules and exemptions.
- Existing investments are not simply being retrospectively taxed under the new system. The reforms include rules to account for gains that accrued before and after 1 July 2027.
- Existing residential investment properties purchased before 7:30pm AEST on 12 May 2026 remain under the existing negative gearing arrangements.
- From 2027–28, negative gearing will generally be limited to new residential properties for investments affected by the reform.
- New-build investors will have specific transitional and choice arrangements under the CGT reforms.
- Investors may increasingly compare opportunities based on their after-tax return rather than headline investment returns.
- Tax should be one factor in an investment decision, not the sole reason for buying or selling an asset.
- Professional tax and financial advice can help investors understand how the reforms may affect their individual circumstances.
Main Text Content
Australia’s investment landscape is changing
For many Australians, investing has traditionally been about finding assets that can grow in value over time.
Property, Australian shares, international shares, managed funds and other investments can all play a role in building long-term wealth.
But the return an investor sees on paper is not necessarily the return they ultimately keep.
Tax can have a significant impact on investment outcomes, particularly when an asset is sold for a substantial capital gain.
This is why Australia’s upcoming capital gains tax reforms are attracting attention from investors.
From 1 July 2027, the existing 50 per cent CGT discount for individuals, trusts and partnerships will be replaced with a system based on inflation-adjusted cost bases, alongside a 30 per cent minimum tax rate on real capital gains.
The government says the objective is to tax the real economic gain after accounting for inflation rather than providing a flat discount on the capital gain.
For investors, however, the practical effect is that tax considerations may become more important when comparing investments and planning when assets are sold.
What is changing with capital gains tax?
Under the current system, an individual or eligible trust that holds an asset for at least 12 months can generally receive a 50 per cent CGT discount on an eligible capital gain.
For example, if an eligible individual makes a $100,000 capital gain, the current discount can reduce the amount of the gain included in taxable income to $50,000, before applying the individual’s marginal tax rate.
From 1 July 2027, the system will change.
Instead of simply applying the 50 per cent discount, investors will generally use cost base indexation to adjust the cost of an asset for inflation. The intention is to tax the gain that represents growth above inflation.
A minimum tax rate of 30 per cent will also apply to real capital gains under the new arrangements, subject to the specific rules and exemptions.
This is a fundamental change in how investors think about capital gains.
The tax calculation will increasingly distinguish between the nominal increase in an asset value and the portion of that increase that represents a real gain after inflation.
Why the change matters to long-term investors
Investment decisions are often made over long periods.
Someone buying shares or property today may not sell the asset for many years.
That means the tax rules that apply when the asset is eventually sold can influence the investment’s long-term after-tax return.
Consider an investor who buys an asset for $500,000 and eventually sells it for $900,000.
The headline capital gain is $400,000.
But the economic value of $500,000 today will not be the same as $500,000 many years from now because of inflation.
Under the new system, indexation is intended to account for this inflation when determining the real gain.
This can make the tax calculation more closely connected to the investor’s actual increase in purchasing power.
Investors may focus more on after-tax returns
One of the biggest changes may not be the tax calculation itself.
It may be how investors compare opportunities.
An investment producing a 10 per cent return is not necessarily better than an investment producing 8 per cent if the tax treatment, costs and risk are substantially different.
Investors may increasingly ask:
What will I actually keep after tax and other costs?
This can be particularly relevant when comparing assets with different expected capital growth, income yields, holding periods and tax treatment.
For example, an investor comparing property with shares may need to consider:
- Expected capital growth
- Rental or dividend income
- Interest costs
- Other investment expenses
- Tax on income
- Capital gains tax
- Investment time horizon
- Inflation
- Transaction costs
- Risk
- Liquidity
Tax is therefore becoming one component of a broader investment return calculation.
The changes are not simply retrospective
Investors should be careful when interpreting headlines about the new CGT rules.
The reforms are designed to apply prospectively.
Treasury states that the 50 per cent discount will continue to apply to gains accruing up to 1 July 2027, while indexation will apply to gains accruing after that date under the new system.
This means investors should not assume that an asset purchased before 1 July 2027 will suddenly have its entire historical capital gain recalculated under the new rules.
The transition rules are important.
Treasury has also been consulting on how the reforms will apply to particular situations, including trusts, changes in residency and how capital gains made before and after 1 July 2027 should be calculated.
Property investors face additional changes
The CGT reforms are being introduced alongside changes to negative gearing.
From the 2027–28 income year, negative gearing for affected residential property investments will generally be limited to new residential properties.
However, the government has stated that existing arrangements will remain unchanged for residential investment properties purchased before 7:30pm AEST on 12 May 2026.
This creates an important distinction between existing investments and future purchases.
Investors considering residential property therefore need to look at both sides of the tax equation:
Income deductions while holding the property
and
capital gains tax when eventually selling it.
Focusing on only one of these factors could produce an incomplete picture of the investment’s potential return.
Existing property investors may have different considerations
An investor who already owns a residential investment property may be in a different position from someone considering purchasing one after the reform’s relevant commencement dates.
Existing investments can continue to operate under the existing negative gearing arrangements where the transitional rules apply.
This means investors should not automatically assume that every property investor will experience the same change.
The timing of acquisition, type of property, ownership structure, and individual tax circumstances can all matter.
For this reason, investors should keep accurate records of acquisition costs and other components of the property’s cost base.
New-build property receives different treatment
The reforms include specific arrangements for new residential developments.
Treasury has stated that investors who buy eligible new builds will be able to choose between the existing 50 per cent CGT discount and the new indexation/minimum-tax arrangements when they sell under the relevant rules.
The government has positioned this as part of its broader effort to encourage investment in new housing supplies.
This means investors considering property should not treat all residential property as having identical tax consequences.
The distinction between an existing dwelling and an eligible new build may become increasingly important when assessing an investment.
Shares and other growth assets are also affected
The CGT reforms are not limited to property.
The new arrangements apply broadly to CGT assets held by individuals, partnerships, and trusts, subject to specific rules.
This can include investments such as shares and other assets that generate capital gains.
For a share investor, for example, the tax treatment of a future gain may become an important part of the investment calculation.
However, this does not necessarily mean investors should avoid Australian shares.
Australian equities can provide dividends, franking credits and capital growth, and investment decisions should consider the full return and risk profile rather than CGT alone.
Could tax changes encourage investors to look overseas?
The recent debate has also raised questions about whether changes to Australia’s tax settings could influence where investors allocate capital.
Australians already have access to global markets through international shares, managed funds and exchange-traded funds.
If investors believe particular domestic assets offer lower after-tax returns than comparable international opportunities, tax can become one factor influencing asset allocation.
However, moving offshore purely because of tax treatment introduces other considerations.
Investors may face:
- Currency risk
- Different tax rules
- Foreign withholding taxes
- Political and regulatory risks
- Different market valuations
- International transaction costs
- Different economic cycles
Tax should therefore be considered alongside investment fundamentals.
The importance of holding periods
The length of time an investor expects to hold an asset can become even more important under a system that incorporates inflation into the cost base.
Long-term investors need to consider how inflation affects both the asset’s purchase price and its eventual value.
An asset held for a short period may have relatively little accumulated inflation adjustment.
An asset held for decades could have a substantially different indexed cost base.
This reinforces the importance of thinking about investment decisions over the entire expected holding period rather than simply looking at the next tax year.
Investors should not sell assets simply because of tax changes
One potential risk during periods of tax reform is making investment decisions based on headlines.
An investor might hear that CGT rules are changing and immediately consider selling an asset before the new system begins.
But selling an asset creates its own tax consequences and transaction costs.
The fact that a tax rule is changing does not automatically mean selling is financially beneficial.
Before making a major investment decision, investors should consider:
- The current value of the asset
- Unrealised capital gains
- Expected future growth
- Income generated by the asset
- Transaction costs
- Tax payable if sold
- Alternative investment opportunities
- Investment time horizon
- Personal financial goals
A tax-driven decision can sometimes create a worse financial outcome than simply continuing to hold a fundamentally sound investment.
Accurate cost-base records will become even more important
Cost-based information is essential when calculating capital gains.
Investors should keep records of the original purchase price and relevant costs that form part of the cost base under the tax rules.
Depending on the asset, this may include certain transaction costs and other eligible expenses.
With the introduction of indexation, accurate historical information can become even more important because the calculation will need to account for changes to the cost base over time.
Investors should not rely on memory or assume their brokerage or property records will always be readily available.
Keeping complete records can make future CGT calculations much easier.
Investment structures may need greater attention
The tax consequences of an investment can also depend on how it is owned.
An investment held personally may be treated differently from an investment held through a trust, partnership, or company.
The 2026 reforms also contain specific measures affecting discretionary trusts.
Treasury has stated that from 1 July 2028, a 30 per cent minimum tax will apply to certain discretionary trust income at trustee level, with beneficiaries receiving non-refundable credits for tax paid by the trustee.
This means investors using trusts for investment or asset-holding purposes should pay close attention to the final rules and obtain advice about their structure.
Small businesses still have important CGT concessions
The CGT reforms do not remove Australia’s existing small business CGT concessions.
Treasury states that the four small business CGT concessions will remain available to eligible businesses.
In addition, the turnover threshold for the 50 per cent active asset reduction is set to increase from $2 million to $10 million from 1 July 2027.
This is important for business owners because selling a business can generate substantial capital gain.
The tax treatment of that gain can have a major effect on the amount of wealth the owner ultimately retains.
Eligible business owners should therefore consider CGT concessions as part of their longer-term exit and succession planning.
Tax should support an investment strategy, not replace one
Capital gains tax is important, but it should not become the only consideration when making investment decisions.
A good investment decision still needs to be considered fundamental.
For property, this could include location, rental demand, financing costs, supply and demand, and long-term growth prospects.
For shares, investors may consider earnings, valuations, dividends, competitive advantages, and economic conditions.
For a diversified portfolio, investors may consider risk tolerance, asset allocation, diversification, and investment timeframe.
Tax planning should work alongside these factors.
The objective is not necessarily to minimize tax at every opportunity.
Instead, the objective is to make decisions that produce an appropriate after-tax outcome for the investor’s overall financial position.
What Australian investors can do now
The reforms do not mean every investor needs to make an immediate change.
However, they do create a reason to review existing investment strategies.
Investors may want to:
Review their investment portfolio.
Understand how much of the portfolio’s expected return comes from income versus capital growth.
Review unrealized gains.
Understand the potential tax consequences of selling highly appreciated assets.
Check cost-based records.
Make sure purchase prices and relevant expenses have been properly documented.
Review investment structures.
Consider whether personal, trust, or other ownership arrangements remain appropriate.
Review property strategies.
Existing and future property investments may be subject to different negative gearing and CGT rules.
Consider the investment timeframe.
A long-term strategy may produce a different tax outcome from frequent buying and selling.
Model after-tax returns.
Compare investments based on what may ultimately remain after tax and costs, rather than headline returns alone.
Seek advice before making major changes.
The transition rules are complex, and further legislation and guidance may affect circumstances.
How Sunnyside Financial Group Can Help
Changes to capital gains tax can make investment planning more complex, particularly for Australians with property, shares, trusts, business interests or significant capital gains.
Sunnyside Financial Group can help Australians understand the tax implications of their financial decisions and incorporate tax considerations into broader wealth and financial planning.
For investors, this can include reviewing investment structures, understanding potential CGT obligations, considering tax planning opportunities, and assessing how investment decisions may affect overall cash flow and long-term wealth.
The goal is not simply to minimise tax.
It is to help investors understand the numbers clearly so they can make informed decisions about their assets, investments, and future financial position.
Final Thoughts
Australia’s capital gains tax reforms represent a significant change in the way future capital gains will be taxed.
From 1 July 2027, the current 50 per cent CGT discount for individuals, trusts and partnerships will give way to a system based on inflation-adjusted cost bases, together with a 30 per cent minimum tax rate on real capital gains under the new rules.
For investors, the biggest lesson is that headline investment returns are only part of the picture.
Tax, inflation, investment costs, risk, holding periods and ownership structures can all influence the amount of wealth an investment ultimately creates.
Rather than making decisions based solely on the upcoming reforms, Australians should consider how the new rules fit into their broader investment strategy.
The strongest approach is likely to be one that combines sound investment fundamentals with careful tax planning and a clear understanding of the after-tax outcome.
General information disclaimer: This article provides general information only and does not constitute financial, tax, investment or legal advice. Australia’s CGT reforms contain detailed transitional rules and may be subject to further legislative changes or guidance. Investors should seek advice based on their individual circumstances before making investment or tax decisions.
