Tax Reform 2027: Shifting Valuation Baselines in Australian Commercial Property
The May 2026 Federal Budget introduced structural shifts to negative gearing and capital gains tax (CGT) scheduled to take effect 1 July 2027. These changes will replace the current 50 per cent CGT discount and introduce a 30 per cent minimum tax on capital gains, necessitating a recalibration of how property values are calculated.
The facts, sourced
- The May 2026 Budget announced that negative gearing benefits will be limited to new residential properties effective 1 July 2027 [1]. [1]
- Starting 1 July 2027, the government will replace the current 50 per cent CGT discount for individuals, trusts, and partnerships with new arrangements [1, 3]. [1]
- The 2026 reform package includes a new 30 per cent minimum tax on capital gains [1]. [1]
- Capital gains tax cost base indexation is being re-introduced to address the impact of inflation on long-term asset values [1]. [1]
A Bifurcated Investment Landscape
The government’s May 2026 reform package has established a binary distinction between asset classes that is reshaping investment mandates. By strictly limiting negative gearing benefits to new residential properties effective 1 July 2027, the policy creates a distinct valuation spread between 'new' and 'existing' stock [1]. Analysts suggest this will likely drive capital flows toward new housing supply, as investors seek to preserve tax-arbitrage potential within the new framework [1].
The Inflation-Linked Adjustment
A critical technical component of the reform is the re-introduction of CGT cost base indexation [1]. While designed to counteract the inflationary pressures eroding the value of long-term assets, this move fundamentally alters how the 'cost base' is defined for tax purposes [1]. Coupled with the introduction of a 30 per cent minimum tax on capital gains, the change represents a significant pivot in fiscal strategy intended to support asset holding while standardising tax outcomes [1].
Implementation Risks and Market Trajectories
With the 1 July 2027 start date, the industry is entering a multi-year transition. The upcoming replacement of the long-standing 50 per cent CGT discount for individuals, trusts, and partnerships remains a primary focus for portfolio managers currently balancing their exposure [1, 3]. As the market adjusts to these new tax settings, the challenge lies in balancing existing holdings against the future fiscal landscape, where the tax-shield environment will favour specific asset classes over others [1].
Market participants should review their portfolios against these forthcoming tax shifts; the transition away from the 50 per cent CGT discount toward a 30 per cent minimum tax environment will require a refined approach to long-term valuation strategies.