Final Regulatory Framework for Multinational Minimum Tax: Key Implications

by | Dec 31, 2025 | Accounting, Income Tax, Tech News

The operational framework for the jurisdiction’s implementation of the OECD Pillar Two global minimum tax rules has been formally completed. The Multinational Enterprise (Minimum Tax) (Administrative Matters) Regulations 2025 and the (Amendment No. 2) Regulations 2025 were gazetted on 30 December and came into operation on 31 December 2025.

Primary Impacts:

  1. Extended Document Retention: A critical 10-year record-keeping mandate is now prescribed. Entities must retain all records pertaining to Multinational Top-up Tax (MTT) and Domestic Top-up Tax (DTT) calculations until 31 December of the 10th year following the relevant financial year. This creates a significant, long-term administrative burden requiring robust data management policies.

  2. Clarified Filing Entity Designation: The regulations establish definitive conditions for appointing a designated local GloBE Information Return (GIR) filing entity and a local Domestic Top-up Tax (DTT) filing entity. Groups must immediately assess these conditions to ensure correct entity designation and compliance with local filing obligations.

  3. Substantive Rule Amendments & Additions: The second amendment to the core 2024 regulations introduces several new technical provisions effective for financial years beginning on or after 1 January 2025. Key additions include rules for the cross-border allocation of current and deferred tax expenses (Regs 44B-44D) and guidance on handling divergences between GloBE and accounting values (Reg 44E). These demand a precise review of current-year calculations.

  4. Practical Compliance Issues: Professionals must urgently analyse amendments to existing rules, including modifications to Transition Year rules (Reg 88), Qualified Domestic Minimum Top-up Tax provisions (Reg 96), and the treatment of deferred tax assets/liabilities (Reg 91). The prescribed interest rate for underpayments (per Section 60(6) of the Act) is also now set.

Action Required:

Affected Multinational Enterprise Groups and their advisors must immediately integrate these final regulations into their Pillar Two compliance and reporting processes for the 2025 financial year. Focus should be on entity designation, record-keeping protocols, and the application of new computational rules for accurate top-up tax liability assessment.

Source: The Government Gazette, 31 December 2025