Compliance

Compliance Checklist: Navigating Australia’s Pillar Two Minimum Tax Rules Successfully

With global minimum tax rules now law in Australia, ensuring compliance with GloBE/IIR/UTPR and new reporting obligations is non-negotiable for multinational entities.

By NomadicTax Research Team • 5-8 min read • November 22, 2025

## What Are the Pillar Two & Domestic Minimum Tax Laws? Australia has adopted the OECD’s Global Anti-Base Erosion (GloBE) Rules, also known as **Pillar Two**, which comprises: - The **Income Inclusion Rule (IIR)** – Australia may apply a top-up tax on parent entities if their foreign subsidiaries pay tax at an effective rate below 15%([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/international-tax-for-business/in-detail/multinationals/global-and-domestic-minimum-tax?utm_source=openai)). - The **Undertaxed Profits Rule (UTPR)** – acts as a backstop, allowing top-up tax in Australia for entities if certain profits are not brought into tax under IIR; in Australia UTPR applies from fiscal years starting on or after **1 January 2025**([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/international-tax-for-business/in-detail/multinationals/global-and-domestic-minimum-tax?utm_source=openai)). - The **Domestic Minimum Tax** – ensures Australian-based low taxed profits are subject to top-up tax so Australia has primacy in taxing those profits, consistent with GloBE rules([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/international-tax-for-business/in-detail/multinationals/global-and-domestic-minimum-tax?utm_source=openai)). ## Who & When This Applies - Multinational enterprise (MNE) groups with annual global revenue above the threshold (generally EUR 750 million or equivalent), foreign operations, subsidiaries with low effective tax rates.([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/international-tax-for-business/in-detail/multinationals/global-and-domestic-minimum-tax?utm_source=openai)) - Important dates to track: - IIR & Domestic Minimum Tax: income years **starting on or after 1 January 2024**([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/international-tax-for-business/in-detail/multinationals/global-and-domestic-minimum-tax?utm_source=openai)). - UTPR: income years **starting on or after 1 January 2025**([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/international-tax-for-business/in-detail/multinationals/global-and-domestic-minimum-tax?utm_source=openai)). - Transitional guidance under PCG 2025/D3 available, including soft-landing periods for lodgment obligations and penalties.([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/business-bulletins-newsroom/consultation-open-for-guidance-about-pillar-two?utm_source=openai)) ## Key Reporting & Compliance Requirements - Complete the **Global Information Return (GIR)**, Domestic IIR/UTPR forms, and related tax schedules as required under the law. Forms for foreign notification, domestic form etc. are being consolidated.([softwaredevelopers.ato.gov.au](https://softwaredevelopers.ato.gov.au/Pillar2_20250305?utm_source=openai)) - Maintain documentation showing the effective tax rates of foreign entities, the apportionment of profits, the ownership and control chains. - Tax positions, restructures, debt instruments need review under new **Debt Deduction Creation Rules (DDCR)** and thin capitalisation changes.([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/international-tax-for-business/private-wealth-international-program/new-international-tax-measures-affecting-private-groups?utm_source=openai)) - Transitional compliance approach: for fiscal years ending before 30 June 2028, Australia adopts softer enforcement of penalties and compliance, provided taxpayers take reasonable measures.([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/business-bulletins-newsroom/consultation-open-for-guidance-about-pillar-two?utm_source=openai)) ## Risks of Non-Compliance - Penalties for failure to lodge or misstatement, statement penalties, possibly interest or top-up amounts where under-taxed profits are found. Transactions not disclosed or mischaracterised can trigger audit attention. - Reputational risk for MNEs if public country-by-country reporting is inconsistent with GIR disclosures. ## Practical Advice to Stay Compliant - Conduct an internal gap analysis: evaluate whether foreign income/structures are below the threshold, whether you have leases or debt transactions that may trigger DDCR, etc. - Engage your external auditors or international tax advisors early to prepare GIRs and related documentation. - Use software tools or ATO API-portal where available for lodgment, as ATO is building technology to support consolidated forms.([softwaredevelopers.ato.gov.au](https://softwaredevelopers.ato.gov.au/Pillar2_20250305?utm_source=openai)) - If encountering period in which compliance is difficult, use the transitional guidance under PCG 2025/D3 to manage risk. Seek advice regarding deferrals, reasonable efforts. ([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/business-bulletins-newsroom/consultation-open-for-guidance-about-pillar-two?utm_source=openai)) ## Case Example: Multinational Group Branching Into Australia Imagine XYZ Inc, headquartered in Europe, with subsidiaries in Asia paying tax at 10% and also a small operating branch in Australia with earnings derived locally. - Under IIR, Australia may impose top-up tax on the foreign subsidiaries if total effective rate falls below 15%. XYZ must include those entities in its GIR. - Also, UTPR could apply to allocate top-up tax to Australian entities if foreign profits are not taxed under IIR. - XYZ will need accurate accounts showing foreign taxes, bedded transfer pricing documentation, ownership structure proof, and ensure lodging forms by due dates. By embracing these requirements proactively, MNEs can avoid penalties, ensure clean compliance, and maintain trust with tax authorities — domestically and internationally.