On December 18, 2025, the Irish Revenue issued Revenue eBrief No. 244/25 which provides for an extension in the Pillar 2 registration deadline to February 28, 2026 (from December 31, 2025).
On December 19, 2025, the Luxembourg Official Gazette published:
– a law to amend its Minimum Tax Law to provide for the January 2025 OECD Administrative Guidance and the EU DAC 9 GIR filing requirements: and
– a Grand Ducal Regulation which includes the format of the GIR
On December 19, 2025, SARS issued further guidance on the Pillar 2 registration process.
Order No. 158/2025 XXV issued on December 12, 2025 provides that for constituent entities whose fiscal year ended between December 31, 2024 and March 31, 2025 the filing deadline for Form 62 (the Pillar 2 Registration Form) is the last day of the 15th month following the end of that fiscal year.
On December 16, 2025, The Netherlands Parliament approved the Second Amendment to the Minimum Tax Act to implement the December 2023, June 2024 and January 2025 OECD Administrative Guidance.
On December 10, 2025, Law No. SFS 2025:1461 to amend the Global Minimum Tax Act was published in the Swedish Official Gazette. The purpose of the law is to implement the provisions of the June 2024 OECD Administrative Guidance into domestic law.
On November 25, 2025, the Finnish Tax Administration published guidance on the allocation of profits/losses and taxes between group entities to take account of the June 2024 OECD Administrative Guidance.
On November 26, 2025, Montenegro issued a Draft Law to apply a domestic minimum top-up tax (DMTT) from January 1, 2026.
On December 1, 2025, Turkey announced an extension in the filing and payment date for the QDMTT return and the opening of a test environment for the submission of the QDMTT return.
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