Tax Planning
Maximizing Cross-Border Savings with the Global Minimum Tax (Pillar Two)
Pillar Two rules are reshaping how multinational corporations and high-net-worth international employees can plan their taxes—this article breaks down strategies that work globally.
By NomadicTax Research Team • 5-8 min read • September 7, 2026
## What is Pillar Two?
The OECD/G20 Inclusive Framework’s **Pillar Two** introduces a **Global Minimum Tax (GMT)** requiring multinationals with revenue above €750 million to pay a floor effective tax rate. ([oecd.org](https://www.oecd.org/en/topics/policy-issues/cross-border-and-international-tax.html?utm_source=openai)) It also includes a **Subject to Tax Rule (STTR)** to allow jurisdictions to tax certain intra-group income that’s lightly taxed elsewhere. ([oecd.org](https://www.oecd.org/en/topics/policy-issues/cross-border-and-international-tax.html?utm_source=openai))
## Who is affected & why it matters
- Multinational Enterprises (MNEs) with €750 million+ in global revenue.
- Jurisdictions with low or zero nominal tax rates lose ground under STTR.
- High-net-worth individuals with interests in international structures could be taxed more, depending on where the income is deemed earned.
## Tax Planning Strategies under Pillar Two
- **Substance & operations**: Demonstrating real business activity (employees, R&D, physical presence) to avoid unjustified low taxation claims.
- **Profit allocation alignment**: Ensuring profits are allocated in line with where value is created—monitor transfer pricing documentation carefully.
- **Review double tax treaties**: The STTR may change how treaty relief applies; renegotiate or monitor treaties that may be updated.
- **Use of hybrid entities**: Be cautious—reverse hybrids or entities treated differently across jurisdictions may become opaque or restricted under Pillar Two rules.
## Case Example
An MNE headquartered in Country A (tax rate 12%) with a subsidiary in Country B (rate 2%). Without GMT, Country A’s MNE would pay a **Top-Up Tax** to bring the effective rate on its group income above the minimum (say 15%)—which could erode competitive advantage gained from locating functions in Country B.
## Actions you can take now
- Conduct a **Pillar Two readiness assessment**, mapping revenue, effective tax rates, and existing structures.
- Identify low-tax entities and review whether STTR applies to your intra-group payments.
- Update accounting and reporting systems for enhanced disclosure requirements.
- Consult with treaty experts to understand evolving relief mechanisms.
## Key Takeaways
- GMT changes the calculus: **low nominal tax rates alone no longer ensure low total tax burden**.
- Transparency and documentation will be increasingly important.
- Proper planning can still leverage legitimate incentives, but without aggressive tax avoidance—or risk complying with STTR, GMT, and new treaty roles.
**Global Tax Tip:** Even if your primary operations are domestic, Pillar Two may impose worldwide consequences—review your entire group structure now to avoid unexpected liabilities.