Contents
General
The Spring Finance Bill 2023 (Finance (No. 2) Bill) was published yesterday (March 23, 2023), along with its Explanatory Notes. The Bill includes provisions to implement key aspects of the Pillar Two Global Minimum Tax for accounting periods beginning on or after 31 December 2023.
This follows the original draft legislation published on July 20, 2022.
The Undertaxed Profits/Payments Rule was not included in the Bill, however this is not unexpected as it was announced in the Autumn Statement that this will apply no earlier than accounting periods beginning on or after 31 December 2024.
The draft legislation is very comprehensive and, as expected, covers relevant aspects of the OECD Model Rules, Commentary and other Published Guidance.
In particular it, provides for an Income Inclusion Rule (named the Multinational Top-Up Tax) and a Domestic Top-Up Tax (which is likely to be a Qualified Domestic Minimum Top-Up Tax).
The UK Bill is the most comprehensive law we have seen to date to implement the Pillar Two Global Minimum Tax. It closely follows the OECD Model Rules and reflects the latest guidance, including aspects of the OECD Safe Harbours Guidance and the Administrative Guidance.
It is worth noting at the outset that Section 255 of the Bill specifically refers to the OECD Model GloBE Rules and Commentary (including the OECD Examples) and directly applies them in various aspects of the application of the Multinational Top-Up Tax.
In addition, it applies ‘any further commentaries or guidance published from time to time by the OECD that are relevant to the implementation of the Pillar Two model rules’.
This would, therefore, include the OECD Administrative Guidance that will itself be included in an updated version of the OECD Commentary.
Application
If you haven’t got a subscription you can sign up below
On February 6, 2026, the Italian Revenue Agency approved the model for the GloBE tax Return. This is a consolidated form with information on the calculation of top-up tax under the IIR, UTPR and QDMTT.
Assess Transitional CbCR Safe Harbour eligibility by Tested Jurisdiction using CbCR + financial statement inputs (including key OECD administrative guidance adjustments).
On January 29, 2026, Canada’s Department of Finance released draft GMTA technical amendments introducing an elective private investment entity de-consolidation rule for Pillar Two/GMTA purposes.
On January 30, 2026, Japan’s National Tax Agency issued a law implementation circular clarifying certain aspects of its UTPR and QDMTT.
In January 2026, Canada issued the filing procedures for the GIR, GMT Return and the Double Filing Relief Notification.
On January 19, 2026, South Korea issued a Draft Law to amend the Enforcement Decree to the International Tax Adjustment Act. This provides for detailed provisions for the application of the QDMTT and will also extend the Transitional CbCR Safe Harbour by 1 year (as provided in the January 2026 OECD Side-by-Side Package).
On January 19, 2026, the Hong Kong Inland Revenue Department opened its E-filing portal for the submission of Top-Up Tax Notifications
On December 31, 2025, Israel enacted Law No. Law 5776-2025 on the Minimum Corporate Tax for Multinational Groups. The enacted law contains some significant changes from the previous draft law.
On December 29, 2025, Uruguay’s President issued Decree No. 325/025, to provide for exemptions from the QDMTT for entities covered by a tax stability agreement. Note that Law N° 20446 to enact the QDMTT was published in the Official Gazette on January 8, 2026.
On December 23, 2025, Korea enacted Law number 21215 to implement the 2026 Tax Reform. This includes a QDMTT from January 1, 2026.
On January 5, 2026, the OECD Released Guidance on amendments to the Pillar 2 rules for the Side-by-Side Tax Package. This includes a new Simplified ETR Safe Harbour from December 31, 2026 (December 31, 2025 in certain cases). We provide an excel overview for the key elements of the Safe Harbour calculation.
On January 5, 2026, the OECD Released Guidance on amendments to the Pillar 2 rules for the Side-by-Side Tax Package. This includes a new Substance-based Tax Incentive Safe Harbour. This online tool shows how the new safe harbour operates.
This website is not affiliated with or related to the OECD. We provide independent insights and analysis on the OECD Two-Pillar Solution
© 2026 OECDPillars.com
All Rights Reserved