International tax cooperation with the EU post-Brexit

The UK is no longer party to the EU framework for administrative cooperation between member states. However, bilateral treaties and the OECD’s Convention on Mutual Administrative Assistance in Tax Matters (MAAC), and the Multilateral Competent Authority Agreements under MAAC, provide for ongoing cooperation with the EU on covered taxes. The Trade and Cooperation Agreement also provides bespoke regimes for VAT, customs duties and excise duties, criminal investigation assistance, and mutual obligations around anti-money laundering regimes. Although this does not signal the end of cooperation with the EU, it seems likely that over time the absence of the UK voice in the EU will see the EU and UK approaches diverge.