Tax Planning
Using Pillar Two Rules to Guide Global Tax Planning for Multinationals in Australia
Discover how Australia’s implementation of global minimum tax rules reshapes tax planning for multinational enterprises and how to adapt proactively.
By NomadicTax Research Team • 5-8 min read • April 19, 2026
## What Are Pillar Two Rules?
Australia has now enacted legislation to implement **both the global minimum tax and the domestic minimum tax** under the OECD/G20 Two-Pillar Solution. These rules include:
- Income Inclusion Rule (IIR) applying from 1 January 2024 ([ato.gov.au](https://www.ato.gov.au/about-ato/new-legislation/in-detail/international/implementation-of-a-global-minimum-tax-and-a-domestic-minimum-tax?utm_source=openai))
- Undertaxed Profits Rule (UTPR) applying from 1 January 2025 ([ato.gov.au](https://www.ato.gov.au/about-ato/new-legislation/in-detail/international/implementation-of-a-global-minimum-tax-and-a-domestic-minimum-tax?utm_source=openai))
- Domestic minimum tax from 1 January 2024 ([ato.gov.au](https://www.ato.gov.au/about-ato/new-legislation/in-detail/international/implementation-of-a-global-minimum-tax-and-a-domestic-minimum-tax?utm_source=openai))
If your enterprise is part of a multinational group with **global revenue of EUR 750 million or more**, these changes directly affect your tax obligations in Australia. ([ato.gov.au](https://www.ato.gov.au/about-ato/new-legislation/in-detail/international/implementation-of-a-global-minimum-tax-and-a-domestic-minimum-tax?utm_source=openai))
## Strategic Tax Planning under the New Rules
| Strategy | Actionable Insight |
|----------|---------------------|
| **Review Supply Chains and Profit Flows** | Ensure profits allocated to jurisdictions with low tax rates are not excessively eroded under the UTPR. Map where your group’s revenue is taxed below 15%. |
| **Optimize Entity Structure** | Use a Designated Filing Entity (DFE) appropriately, especially with joint ventures—appoint one entity in the MNE group to lodge domestic returns. *Don't assume all joint operations qualify in the same way*. ([ato.gov.au](https://www.ato.gov.au/about-ato/consultation/in-detail/special-purpose-working-groups-key-messages/pillar-two-global-and-domestic-minimum-tax-working-group/pillar-two-global-and-domestic-minimum-tax-6-march-2025imum-tax-wgkm-6-march-2025?utm_source=openai)) |
| **Leverage Safe Harbours and Transitional Relief** | The ATO has indicated it will grant leniency during transition periods. For instance, for fiscal years ending before 30 June 2028, soft-landing obligations apply under certain safe harbour tests. ([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/business-bulletins-newsroom/consultation-open-for-guidance-about-pillar-two?utm_source=openai)) |
| **Update Systems and Data Collection** | Many companies will face significant technology uplift to capture GIR (GloBE Information Return) data. Audit your accounting, reporting, and financial record-keeping systems now. ([ato.gov.au](https://www.ato.gov.au/about-ato/consultation/in-detail/closed-groups/australian-banking-association-steering-group-key-messages-22-may-2024?utm_source=openai)) |
## Practical Example
Suppose “Acme Mining Ltd.” has global group revenue exceeding EUR 750 million. Under the UTPR, several subsidiaries in low-tax jurisdictions generate income taxed at 10%. Australia may impose a **top-up tax** so that the effective rate meets 15% threshold. If properly structured, Acme could avoid or mitigate tax exposure by re-allocating taxable profits, using licensing agreements, or changing entity ownership to Australia to enable domestic tax claims.
Employ a tax projection model to simulate different effective tax rates across jurisdictions before year-end.
## Action Plan for Multinational Taxpayers
1. **Determine scope**: Do you meet the threshold and test as an in-scope MNE?
2. **Identify Designated Local Entity**: Nominate one entity to file returns in Australia.
3. **Collect and validate data**: Prepare GIR inputs for your group. Check on joint ventures and account consolidation methods.
4. **Stay updated**: Follow draft guidelines such as **PCG 2025/D3** and updates to **Taxation Ruling TR 2006/11DC**. These will shape lodgment obligations and interpretative guidance. ([ato.gov.au](https://www.ato.gov.au/businesses-and-organisations/business-bulletins-newsroom/consultation-open-for-guidance-about-pillar-two?utm_source=openai))
5. **Seek professional rulings**: If uncertain about classification, eligibility, or how the domestic minimum tax applies, apply for a private ruling before year-end.
With these steps, multinational enterprises can move from reactionary compliance to proactive tax planning under Australia’s Pillar Two regime.