Australian mining sector urges exemption from capital gains tax reforms

Australian mining executives and industry bodies are mounting a coordinated campaign to persuade the federal government to exclude mineral explorers from upcoming changes to the capital gains tax regime. Industry leaders argue that the proposed legislation threatens to erode investment confidence and diminish the nation’s standing as a competitive destination for global mining capital. The pressure has intensified following official confirmation that exploration companies will not receive the same tax concessions granted to technology start-ups, a decision that has drawn sharp criticism from senior figures across the sector.

The reforms, outlined by Treasurer Jim Chalmers in the May 2026 federal budget, are designed to replace the existing 50 percent capital gains tax discount with cost base indexation and a 30 percent minimum tax on gains. These measures are scheduled to take effect from July 1, 2027. While the government introduced exemptions for innovative technology firms, it explicitly stated in September that junior exploration companies would not be afforded similar treatment. This distinction has become the focal point of the current dispute, with industry representatives contending that the policy fails to account for the unique risk profile of the mining sector.

Jake Klein, founder and chairman of Evolution Mining, voiced strong opposition during the International Mining and Resources Convention in Sydney. He described the capital gains tax structure as detrimental to the industry, noting that the policy headwinds are part of a broader set of challenges facing the sector. Klein argued that it is illogical for new entrants to face a 25 percent worse outcome compared to those who began their careers three decades ago. His comments reflect a wider sentiment among executives who believe the current trajectory is unsustainable for long-term growth.

Ross Lambie, chief economist at the Minerals Council of Australia, emphasized that the proposed reforms ignore the high risks and low success rates inherent in mineral exploration. He stated that investors accept the potential for total loss in exchange for the possibility of substantial returns from successful discoveries. By diminishing these potential rewards, the government is effectively discouraging the high-risk investment required to maintain a healthy pipeline of future projects. Lambie described the policy as flawed and noted that requests for parity with start-up concessions have been ignored by the government.

Aaron Morey, chief executive of the Chamber of Minerals and Energy of Western Australia, highlighted a contradiction between the tax changes and national strategic goals. He pointed to recent diplomatic engagements, including Prime Minister Anthony Albanese’s visit to the White House, where advancing minerals projects was a key agenda item. Morey argued that the proposed tax treatment is fundamentally at odds with the vision of developing a robust critical minerals industry and strengthening international partnerships.

Wayne Bramwell, managing director of Westgold Resources, characterized the changes as an own goal that would damage the exploration ecosystem. He warned that the effects are already visible in Western Australia, the country’s largest destination for exploration spending. Bramwell noted that the flow of capital is drying up because high-risk work is no longer adequately rewarded. He expressed concern that the damage to the industry’s infrastructure could be long-term, although he maintained that the situation remains reversible if the government acts to support explorers.

The Association of Mining and Exploration Companies has also challenged the reforms, warning that the current round of consultation will be meaningless without substantive legislative changes. As the government prepares for the July 2027 implementation date, the sector awaits a decision that could determine Australia’s ability to attract the risk capital necessary for future mineral discoveries.