[SMM Market Flash] Australia's Proposed CGT Overhaul Sparks Industry Warnings Over Junior Mining Funding

Published: May 26, 2026 18:06

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Australian mining executives are warning that Treasurer Jim Chalmers' proposed CGT overhaul — replacing the 50% discount with an inflation-linked rate that would nearly double tax on mining share gains — poses a structural threat to junior exploration funding. Junior resources companies rely heavily on retail investors, as institutional funds largely avoid the sector due to high failure risk; tighter CGT terms would reduce risk capital, leading to fewer discoveries and a thinner project pipeline. The industry is lobbying for junior explorers to be included in any start-up CGT carve-out, drawing comparisons to the 2010 resources super profits tax row that destabilised the Rudd government. Chalmers acknowledged industry concern but stopped short of a sector-specific commitment.

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