The Member States 7 February 1992, Consolidated version of the Treaty on European Union#TITLE VI - FINAL PROVISIONS#Article 54(ex Article 52 TEU)

3. The Treaties shall cease to apply to the State in question from the date of entry into force of the withdrawal agreement or, failing that, two years after the notification referred to in paragraph 2, unless the European Council, in agreement with the Member State concerned, unanimously decides to extend this period. 4.