Article 50 TEU: Withdrawal of a Member State from the EU

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The right of a Member State to withdraw from the European Union was introduced for the first time with the Lisbon Treaty, partly addressing a longstanding controversial issue within the European Union.

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Article 50 TEU does not set down any substantive conditions for a Member State to be able to exercise its right to withdraw, rather it includes only procedural requirements. It provides for the negotiation of a withdrawal agreement between the EU and the withdrawing state, defining in particular the latter's future relationship with the Union. If no agreement is concluded within two years, that state's membership ends automatically, unless the European Council and the Member State concerned decide jointly to extend this period.

The legal consequence of a withdrawal from the EU is the end of the application of the EU Treaties (and the Protocols thereto) in the state concerned from that point on. EU law ceases to apply in the withdrawing state, although any national acts adopted in implementation or transposition of EU law would remain valid until the national authorities decide to amend or repeal them. A withdrawal agreement would need to address the phasing-out of EU financial programmes and other EU norms.

Related Links
Commentary and Analysis
Open Europe, 22.02.16: The mechanics of leaving the EU – explaining Article 50
EUObserver, 24.02.16: EU's Article 50: the rules for Brexit
The Conversation, 03.06.16: What is Article 50 – the law that governs exiting the EU – and how does it work?
EU Law Analysis: Blog, 26.09.16: Is Article 50 TEU Valid?
BBC News, 27.06.16: Reality Check: Does the UK have to trigger Article 50?
The Guardian, 25.06.16: What is article 50 and why is it so central to the Brexit debate?
The Guardian, 26.06.16: Will article 50 ever be triggered?
Politico, 30.06.16: Could Article 50 have been triggered already?
EU Law Analysis: Blog, 28.07.16: Brexit Begins: an overview of the legal issues
In Facts: Tag: Article 50
UK in a Changing Europe: The Facts: Voting to leave: Article 50
The Conversation, 02.11.16: Once triggered, can Article 50 be revoked?
EU Law Analysis: Blog, 19.01.16: Member States’ Right to a Decision on Withdrawal from the EU: A Legal Analysis (Article 50(1) TEU)
Verfassungsblog: Tag: Article 50 TEU
The Conversation: Tag: Article 50
EPRS: Briefing, February 2016: Article 50 TEU: Withdrawal of a Member State from the EU
LSE European Institute: EuroppBlog, 08.09.18: Article 50 is flawed: Could the ECJ extend the two-year withdrawal period?
EU Law Analysis: Blog, 08.12.14: Article 50 TEU: The uses and abuses of the process of withdrawing from the EU
Wikipedia: Withdrawal from the European Union
EPRS: In-Depth Analysis, January 2018: The (ir-)revocability of the withdrawal notification under Article 50 TEU
EU Law Analysis: Tag: Revocation of withdrawal
UK Constitutional Law Association: Blog, 29.11.16: Stijn Smismans: About the Revocability of Withdrawal: Why the EU (Law) Interpretation of Article 50 Matters

European Parliament: Article, 29.03.17: Article 50: how the future of EU-UK relations will be decided
European Commission: Article 50 of the Treaty on European Union – Q&A
Treaty on European Union (TEU): Article 50

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