In a significant development for multinational enterprises (MNEs) operating in the region, Singapore’s landmark minimum tax legislation has been granted transitional qualified status by the Organisation for Economic Co-operation and Development (OECD).
The OECD updated its Central Record of Legislation on 18 August 2025, confirming that Singapore’s Multinational Enterprise (Minimum Tax) Act 2024 (MMTA) has secured two key designations:
- Transitional Qualified Status for its Income Inclusion Rules (IIR).
- Transitional Qualified Status for its Qualified Domestic Minimum Top-up Tax (QDMTT) Rules.
This endorsement is a critical step in the global implementation of the OECD/G20 Inclusive Framework’s Global Anti-Base Erosion (GloBE) rules, which aim to ensure large MNEs pay a minimum level of tax of 15% on income in each jurisdiction where they operate.
Immediate Implications for MNEs: QDMTT Safe Harbour Election
The granting of transitional qualified status for its QDMTT Rules has an immediate and material impact for in-scope MNEs. Groups subject to a domestic top-up tax under Part 3 of the MMTA are now eligible to make a QDMTT Safe Harbour election for their Singapore operations.
By making this election, the GloBE top-up tax liability for their Singapore operations will be deemed zero under Article 8.2 of the GloBE Rules. This simplifies compliance by eliminating the need for a detailed GloBE calculation for Singapore, provided the domestic top-up tax is paid.
Transitional Status and Future Review
It is important to note that the qualified status is currently transitional. This status will cease once a full review of the legislation is completed to determine its full qualified status. According to the OECD framework, this comprehensive review is expected to commence no later than two years after the MMTA’s effective date.
The transitional qualified status may be revoked if:
- The full legislative review is not initiated within the agreed-upon timeframe.
- The review concludes that the legislation is not fully qualified.
- Subsequent amendments render the legislation non-compliant.
The OECD has clarified that should a jurisdiction lose its status, the loss will not be applied retrospectively. The Central Record of Legislation will be updated on an ongoing basis to reflect any changes.
This development provides much-needed clarity and certainty for MNEs with a significant presence in Singapore as they navigate the new global minimum tax landscape.
Source: OECD, 21 August 2025.