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How Much More CGT Could Property Investors Pay Under the Reforms?
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What Are the Announced CGT Reforms?
The announced CGT reforms have raised a practical question for many investors: how much extra tax could they actually pay? The answer depends heavily on inflation, holding period, income level and the asset’s growth rate. This is where a property advisor can help investors move beyond the headline and model the numbers properly.
From 1 July 2027, the 50% CGT discount is set to be replaced by a cost base indexation model for assets held longer than 12 months, with a 30% minimum tax on real capital gains. Gains accrued before that date are expected to remain protected under transitional rules. Australia’s CPI rose 4.6% in the 12 months to March 2026, which matters because higher inflation can improve the outcome under indexation.
How does inflation change the CGT result?
Under the announced model, the property’s cost base is adjusted for CPI across the holding period before tax is calculated. Investors are then taxed on the gain above the inflation-adjusted base, not the full nominal gain.
That means inflation is not a side detail. It can materially change the result. A property advisor reviewing a long-term sale scenario would need to test several CPI assumptions rather than rely on one forecast.
For example, for a top marginal tax rate investor holding a $1 million property over 10 years at 7% annual growth, modelling suggests:
- At 1.5% CPI, the effective tax rate may rise from 23.8% to 39.6%.
- At 2.5% CPI, it may rise from 23.8% to 33.7%.
- At 3.5% CPI, it may rise from 23.8% to 27.3%.
- At 4.5% CPI, it may fall from 23.8% to 20.3%.
This is why investors should be careful with simple claims that the reform is always worse. At higher inflation levels, indexation can produce a lower tax outcome than the current discount.
What do real property examples show?
The reform still has the potential to increase tax in many real-world cases. Performance Property’s modelling considered two historical transactions:
- A Brisbane property purchased in 2016 for $877,500 and sold for $1,755,000.
- An Adelaide property purchased in 2018 for $782,000 and sold for $1,520,000.
Applied retrospectively to those holding periods, the announced framework would have produced additional CGT of $76,427 and $70,935 respectively. A property advisor would not treat those numbers as universal, but they do show why investors should model the after-tax result before selling, refinancing or restructuring.
Should investors change their strategy because of CGT reform?
The reform changes after-tax outcomes. It does not change the fundamentals that drive strong long-term investment performance. Asset quality, location, income, land value, scarcity and demand still matter.
A property investment advisor may help investors assess whether the asset still deserves to be held after accounting for tax. In many cases, the better decision may be to keep a high-quality asset rather than sell purely because the tax rules are changing. This is also where an investment property advisor can compare the cost of selling against the benefits of holding.
Investors comparing advice should also be aware that property investment companies can vary significantly in how they assess risk. Some focus mainly on acquisition. Others provide broader property investment services, including portfolio reviews, cash-flow modelling and long-term exit planning.
Why does the timing of a sale matter?
Timing matters because the reform protects gains accrued before 1 July 2027. Investors with substantial unrealised gains may need a valuation-based view of what has already accrued and what may be taxed under the new framework later.
A property advisor can help investors think through questions such as whether a sale before the reform date is actually beneficial, whether the property’s future growth justifies holding, and whether the investor’s borrowing structure supports the plan. For Victorian investors, a property investment advisor Melbourne may also need to consider state-based costs, land tax settings and local market conditions alongside federal CGT changes.
What should investors review before making a decision?
Before reacting to the reform, investors should review the numbers in context. Useful questions include:
- What portion of the gain is likely to be protected before 1 July 2027?
- How sensitive is the result to different CPI assumptions?
- Would selling trigger avoidable costs or reduce long-term compounding?
- Is the asset still aligned with the investor’s portfolio goals?
- Are finance, cash flow and ownership structures still appropriate?
A property advisor should be able to explain these issues in plain language, not just provide a tax estimate. The right property investment services should connect tax modelling with asset selection, portfolio strategy and risk management.
How can investors get clearer advice?
The main lesson is that CGT reform should not be assessed in isolation. It should be modelled against the actual property, the investor’s income position, the expected holding period and realistic inflation assumptions. A property advisor can then help compare the tax outcome with the wider investment case.
A property investment advisor Melbourne may be useful for investors with local market exposure, while broader property investment companies may assist investors in comparing opportunities across states. An investment property advisor should also help investors avoid reactive decisions based only on tax.
A property advisor can bring the modelling together so the decision is based on numbers, not headlines.