Australia Tax Authority Opens Global Minimum Tax Filing Portals

May 6, 2026, 11:18 AM UTC

Australia has opened its portals for multinationals to file their global minimum tax returns ahead of its June 30 deadline.

Companies operating in Australia subject to the 15% global minimum tax, known as Pillar Two, can now file their required minimum tax returns through the Australian Tax Office’s portals, the agency announced Tuesday.

Multinationals with annual revenue exceeding €750 million (US $884 million) are required to file minimum tax returns in countries signed up to the global minimum tax rules and those that implemented domestic minimum top-up taxes, if the company operates there.

The tax office requires in-scope businesses ...

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