OECD Pillar Two: The 15% Global Minimum Tax in 2026
Pillar Two — the OECD's 15% global minimum corporate tax for large multinationals — is now active in over 50 jurisdictions including the UAE. Here's the threshold, the mechanics (IIR, UTPR, QDMTT), and what SMEs need to know (mostly: nothing).
Since 1 January 2024, more than 50 jurisdictions have begun applying the OECD's Pillar Two global minimum tax — a 15% effective tax floor for multinational enterprise groups with consolidated annual revenue of €750 million or more. By 2026, the rule set is in force across the EU, the UK, Australia, Japan, South Korea, Canada, the UAE, and most of the GCC.
If you run an SME, this almost certainly does not apply to you — the threshold is deliberately set high. But understanding it matters because it explains a wave of corporate tax rate changes and new "top-up taxes" worldwide.
Who is in scope
Pillar Two applies to MNE Groups with consolidated annual revenue of at least €750 million in at least two of the four preceding fiscal years. Excluded entities include investment funds, pension funds, government entities, international organisations, and non-profits.
If your business is below this threshold, the rules do not apply. Most countries have separately confirmed that domestic small-business tax regimes are unaffected.
The three mechanisms
- Income Inclusion Rule (IIR) — the parent jurisdiction taxes a top-up amount on low-taxed foreign subsidiaries until the effective tax rate reaches 15% per jurisdiction.
- Undertaxed Profits Rule (UTPR) — backstop: if the parent jurisdiction has not implemented an IIR, other implementing jurisdictions can collect the top-up tax. Effective from 2025 in most adopters.
- Qualified Domestic Minimum Top-up Tax (QDMTT) — a country imposes its own 15% domestic top-up on in-country profits of in-scope MNEs, ensuring the revenue stays at home rather than being collected by the parent's jurisdiction.
The UAE's Domestic Minimum Top-up Tax
The UAE introduced its Domestic Minimum Top-up Tax (DMTT) via Cabinet Decision No. 142 of 2024, effective for financial years starting on or after 1 January 2025. In-scope MNEs operating in the UAE pay a 15% effective rate on UAE profits, replacing the otherwise-applicable 9% standard corporate tax for those entities. The standard 9% corporate tax regime continues to apply to all other businesses.
Key UAE points: the DMTT only applies above the €750M consolidated revenue threshold; UAE Free Zones do not exempt in-scope MNEs from the DMTT; and the UAE's existing R&D incentive frameworks are being designed to be Pillar-Two compatible.
What SMEs should do (mostly nothing)
If your business is comfortably below €750M consolidated revenue, no action is required. Continue with standard corporate tax compliance in your home jurisdiction. The Pillar Two rules do not reach down into the SME segment by design.
The exception: SMEs that are part of a larger MNE group (for example, a UAE subsidiary of a global parent above the threshold) are in scope. If you are unsure whether a parent group exceeds €750M, ask the group finance team rather than assuming.
Sources
- OECD/G20 Inclusive Framework on BEPS — Pillar Two Model Rules and commentary.
- Council Directive (EU) 2022/2523 — minimum effective taxation of multinational groups in the EU.
- UAE Cabinet Decision No. 142 of 2024 — Domestic Minimum Top-up Tax.
- UAE Ministry of Finance public consultation on the implementation of Pillar Two and DMTT (2024).