By: Alex Hagemann, Senior Policy & Public Affairs Manager
Australia’s longstanding reputation for economic stability and transparent regulation has been a driver of its economic success, particularly when encouraging infrastructure investment. Proposed changes to the foreign resident capital gains tax (CGT) regime could place this reputation at risk – not because of the policy implications – but because it would be retrospectively applied, changing the conditions under which investments had already been made.
The draft legislation, introduced in April, proposes to expand the definition of taxable Australian real property and apply it retrospectively to the commencement of the CGT regime in 2006 – reopening settled transactions. Whilst infrastructure investors understand and broadly support the principle of appropriately sharing tax from assets with a close and enduring connection to Australian land and natural resources, the way in which that is delivered matters.
Recent Federal Court decisions in this area, including Newmont and YTL Power, did not identify a failure of the CGT regime or evidence of systemic avoidance. Rather, they applied established principles of property law to highly specific statutory and factual circumstances, finding that certain infrastructure and resource assets – though physically affixed to land – were legally separate from it. These decisions reflect the long‑standing architecture of Australia’s tax system. Retrospective legislative amendments, that would challenge these judicial outcomes, raise important questions about legal certainty and the rule of law.
For institutional infrastructure investors, retrospective policy risk is a concern in any market. Capital is committed years in advance based on existing regulatory and tax frameworks. When outcomes lawfully achieved under existing legislation can be reopened, investors are forced to reassess not only historic exposure but also future sovereign risk. That reassessment has real consequences: higher risk premiums, increased cost of capital, or the potential for capital to be deployed elsewhere.
Existing global precedent already underscores these risks. Retrospective taxation disputes, such as India’s case against Vodafone, demonstrate how technical tax changes can escalate into protracted legal conflict and lasting reputational damage. While Australia’s institutional context differs, the lesson is clear: retrospectivity can transform a fiscal issue into a wider question of trust.
Australia’s administrative assurances that enforcement will generally be limited to a four‑year look‑back are currently insufficient. These statements remain non-binding at present and therefore cannot substitute for legislated certainty. They also do not meaningfully address balance‑sheet risk for existing investors or for investment committees and auditors.
These issues are also magnified by the current geopolitical and energy security environment. Governments across the Indo‑Pacific are racing to secure investment in energy generation, transmission, storage and resilience assets. Australia has a clear opportunity to continue to position itself as a trusted anchor for long‑term capital in the region, but that opportunity depends on predictability.
A forward‑looking policy solution is readily available. Applying any revised definition of real property to future transactions only, supported by clear transitional or grandfathering provisions, or a deemed market value cost‑base reset, would simultaneously protect Australia’s tax base without undermining confidence in its legal system.
In an era of heightened global uncertainty, policy predictability and trust is critical. Preserving it will strengthen Australia’s ability to continue to attract the capital required to deliver the infrastructure on which its economic resilience and net‑zero ambitions depend.