1. So what is actually changing in 2027?
Under the old system investors holding an asset for over 12 months simply halved their taxable capital gain before applying their marginal tax rate.
The changes mean that the old 50% discount is replaced by cost base indexation. Under this method, the original purchase price of your asset is adjusted for inflation (over the period you owned the asset) using the Consumer Price Index (CPI). You will only pay tax on the “real” economic gain that exceeds inflation.
Replacement of the 50% CGT Discount
From 1 July 2027, the government will replace the 50% CGT discount (which is currently available to individuals, trusts, and partnerships on assets held for 12 months or more) with cost‑base indexation, That means tax will apply only to real gains after adjusting for inflation.
Introduction of a Minimum 30% Tax Rate on Capital Gains
A new minimum 30% tax rate will apply to capital gains,. That means that (after adjusting for inflation over the period of your purchase) a baseline level of tax is paid.
Negative Gearing Reforms (Linked to CGT Changes)
The government will also limit negative gearing to new residential builds, aligning with broader housing‑affordability goals.
2. Why Is the Government Making These Changes?
Housing Affordability and Market Fairness
Government is highlighting that housing prices have risen more than twice as fast as average full‑time earnings since 1999. This has contributed to declining home‑ownership rates among younger Australians and put the government under a lot of pressure to “do something”..
The CGT overhaul aims to:
- Reduce speculative investment pressure
- Encourage investment in new housing supply
- Level the playing field for first‑home buyers
Modernising the Tax System
The Treasury is also spruiking the reform as part of a broader effort to create a simpler, more sustainable tax system that better reflects economic conditions and inflation.
3. How the New CGT System Will Work
Cost‑Base Indexation Explained
Under indexation, the asset’s cost base is adjusted using inflation measures (most likely the CPI).
Taxable gain will be the sale price minus inflation‑adjusted cost base.
The idea is that investors are taxed only on “real” gains. It also means periods of high inflation reduce taxable gains more significantly.
Minimum 30% Tax Rate
Another change is that – regardless of indexation, a base rate of 30% applies to capital gains. This is to prevent scenarios where inflation adjustments reduce taxable gains to very low levels.
Impact on Different Asset Classes
- Property investors: Higher tax on long‑held properties compared to the current 50% discount.
- Share investors: More predictable tax outcomes during inflationary periods.
- Trusts and partnerships: Same rules apply as individuals.
- Superannuation funds: No changes announced to existing concessional CGT treatment.
4. What About Small Businesses?
The government has confirmed that all four existing small‑business CGT concessions remain in place, including the 15‑year exemption and retirement exemption.
Additionally:
- The turnover threshold for the 50% active asset reduction increases from $2 million to $10 million from 1 July 2027.
This means small businesses will still have powerful tax‑reduction tools despite the broader CGT overhaul.
5. Who Will Be Most Affected?
Time will tell what the actual effects will be but broadly speaking:
Most impacted
- Long‑term property investors
- High‑income individuals using negative gearing
- Trust structures relying on the 50% discount
- Investors with large unrealised gains accumulated over decades
Least impacted
- Small businesses using CGT concessions
- Investors with modest gains
- Owners of assets purchased recently (less inflation impact)
- First‑home buyers (indirect benefit through reduced investor competition)
6. Practical Steps to Prepare Before 1 July 2027
Talk to your accountant! But don’t rush or panic. A lot of what you are hearing from the government and on social media, the news etc, etc is people pushing an agenda of some sort or pure speculation (although mixed in with some sound reasoning).
Review your investment portfolio
Consider whether to realise gains before the discount is removed.
Reassess property investment strategies
Negative gearing restrictions and higher CGT may reduce the attractiveness of older properties.
Evaluate trust structures
Discretionary trusts will lose access to the 50% discount — modelling future tax outcomes is essential.
Small business owners should check their eligibility
Ensure you understand how the unchanged concessions and new turnover threshold apply to your situation.
Seek Professional Tax Advice
Again, talk to a professional. The shift from discount to indexation is complex and personalised modelling tailored to your situation is crucial.
7. Summary: What the 2027 CGT Overhaul Means for You
Australia’s 2027 CGT reform represents a major structural shift designed to modernise the tax system, improve housing affordability, and ensure fairer taxation of investment gains. Let’s wait and see how much (and in what way) this actually changes things. Apart from anything else, many of the forces affecting housing affordability are outside of government control.
But there is no doubt that the key changes — removal of the 50% discount, introduction of inflation indexation, and a minimum 30% tax rate — will reshape investment strategies across the country. Small businesses retain strong protections, while property investors and trusts face the most significant adjustments.
8. Further Reading
Negative Gearing and Capital Gains Tax Reform
Tax reform – Boosting home ownership – Reforming negative gearing and capital gains tax
Tax reform implementation for small business and startups
