
UK publishes draft legislation to implement the OECD’s Side-by-Side Pillar Two package
On July 13, 2026, the UK government published draft Finance Bill 2026–27 legislation implementing the OECD’s January 2026 Side-by-Side package.
As a permanent establishment (PE) is treated as a separate entity for Pillar Two GloBE purposes the Pillar Two GloBE income of a PE needs to be determined.
However, the Pillar Two GloBE income rules rely on the financial accounts of the entity which may include the profits attributable to a PE (ie for financial accounting purposes, a PE is not always recognized and there may not be separate financial accounts).
Therefore, Article 3.4 of the OECD Model Rules includes provisions to allocate the income between an entity and its PEs.
Where a PE exists under a tax treaty, domestic law or would have existed in a jurisdiction with no corporate income tax if there was a tax treaty in place if there are separate financial accounts for the PE, these apply, and the net income or loss is used.
If there are no financial accounts in place, accounts would need to be prepared based on the accounting standard the UPE used to prepare the consolidated financial accounts. The amount of income and expenses attributed to the PE are based on the provisions of the relevant tax treaty or domestic law.
Note that whilst the tax treatment of the income in the PE jurisdiction has no impact on the allocation to the PE jurisdiction, timing differences may adjust the treatment.
The Pillar Two GloBE rules deem there to be a PE where there is no actual PE, and the income deriving from the activities of the PE is exempt in the residence jurisdiction (ie the residence of the main entity).
In this case, the amount attributable to the PE is the amount of tax-exempt income as well as any expenses not taken into account by the main entity because they are attributable to foreign activities.
Given income or losses are attributable to PEs if they are included in the financial accounts of the main entity they would need to be deducted when calculating Pillar Two GloBE income.
If there is a loss in a PE, this will be treated as an expense of the main entity under Article 3.4.5 of the OECD Model Rules to the extent that the loss of the PE is treated as an expense for domestic tax purposes.
Pillar Two GloBE income that is subsequently earned by the PE is treated as income of the main entity up to the amount treated as an expense by the main entity.
In general, for tax purposes the income of transparent entities (eg tax transparent partnerships, LLPs and LLCs) is taxed on the underlying owners. However, for accounting purposes, these entities would generally have their own financial accounts.
Given the Pillar Two GloBE rules rely on financial accounting information, specific additional rules are provided in Article 3.5 of the OECD Model Rules to correctly allocate the income of transparent entities in a way that reflects most domestic tax treatment.
Firstly, the financial accounting net income or loss of a transparent entity or reverse hybrid is reduced by any amounts due to owners that aren’t members of the MNE group. This is necessary as the Pillar Two GloBE ETR of the group members won’t include income or taxes paid by non-group members.
Secondly, if the transparent entity or reverse hybrid carries our business through a PE, this needs to be deducted from the accounting income of the transparent entity or reverse hybrid, given that PEs are treated as separate constituent entities for Pillar Two GloBE purposes.
Finally, any remaining amount of the financial accounting income or loss is allocated:
– To the owners if the entity is a transparent entity (based on their ownership interest). This can flow up the chain if there are a number of transparent owners.
– To the entity itself if the entity is a reverse hybrid
– To the UPE if the entity is a transparent entity and the UPE of the MNE group.

On July 13, 2026, the UK government published draft Finance Bill 2026–27 legislation implementing the OECD’s January 2026 Side-by-Side package.

On July 1, 2026, Australia issued the Taxation (Multinational—Global and Domestic Minimum Tax) Amendment (2026 Measures No. 2) Rules 2026. This incorporates elements of the OECD Agreed Administrative Guidance issued in December 2023, June 2024 and January 2026.

On June 26, 2026, Cyprus issued Decree 272/2026 to confirm entry-into-force dates for the main January 2026 OECD safe harbour package

On June 22, 2026, the UAE issued Ministerial Decision No. 96 of 2026 to implement the OECD Side-by-Side Tax Package.

On June 26, 2026, Turkey announced an extension to the filing of its GloBE tax return and payment from June 30, 2026 to July 31, 2026.

On June 16, 2026, the Dutch Ministry of Finance opened an internet consultation on the Draft Safe-Harbour Bill. The consultation closes on 14 July 2026 and provides draft legislation to implement the OECD Side-by-Side package into the Dutch domestic regime.

On June 15, 2026, the Cyprus Tax Department issued two announcements on the domestic implementation of the Pillar Two framework. The first concerned the European Commission’s position on Cyprus’ Income Inclusion Rule (IIR). The second addressed filing deadlines and compliance obligations for Cypriot constituent entities and joint ventures under Law 151(I)/2024.

On June 10, 2026, the EU issued the ‘Manual for MNE Groups on Global Minimum Tax (Pillar Two) Compliance Obligations‘. This provides country level analysis of Pillar Two filings in Austria, Belgium, Croatia, Cyprus, Czech Republic, Finland, France, Germany, Greece, Ireland, Poland, Romania, Slovenia and Sweden.

A practical overview of the Dutch GloBE Information Return (GIR) filing process, including BIA terminology, deadlines, XML format, Digipoort submission, security, validation, notification obligations and governance controls.
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