United Kingdom: Week in Tax: Global Developments 28 Sep – 2 Oct 2026

The KPMG Week in Tax for 28 September – 2 October 2026 reports on the commencement of OECD Pillar Two peer reviews, the European Commission’s Business in Europe: Framework for Income Taxation (BEFIT) directive proposal, increased US transfer pricing documentation penalties under Section 6662, and Australia’s revised thin capitalization rules for general class investors. These developments signal heightened enforcement and coordination across major economies.

Key Takeaways

  • Pillar Two Peer Reviews Launched: The Inclusive Framework began peer reviews of qualified domestic minimum top-up tax (QDMTT) and UTPR implementation. Jurisdictions with enacted Pillar Two legislation (UK, EU, Japan, Korea, Canada) face assessment of legislative alignment and administrative capacity. MNEs should anticipate jurisdictional QDMTT safe harbour qualifications being scrutinized.
  • BEFIT Directive Proposal: The EU Commission unveiled BEFIT, a single corporate tax rulebook for the single market, featuring a consolidated tax base, formulaic profit allocation, and a common consolidated corporate tax base (CCCTB) lite. While adoption requires unanimity, the directive influences national tax reforms. Groups with EU subsidiaries should model formulaic allocation impacts.
  • US Transfer Pricing Penalty Risk: The IRS increased the Section 6662(e) penalty threshold for substantial valuation misstatements from 200% to 400% of the correct amount, but expanded the ‘net adjustment’ definition. Taxpayers must ensure contemporaneous documentation meets the ‘reasonable cause’ standard to avoid 20-40% penalties.

Disclaimer: This article is compiled and summarized by the AI based on publicly available information and is for general information purposes only. It does not constitute any form of formal tax advice, legal opinion, or basis for performance. Please consult a qualified professional tax advisor or legal counsel for tax advice.

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