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Treaties

Legend
	Founding treaties
	Amending treaties
	Accession treaties
	Other acts
	Consolidated versions

Entry into force	Treaties

1 December 2009	Treaty of Lisbon amending the Treaty on European Union and the Treaty establishing the European Community, signed at Lisbon, 13 December 2007 OJ C 306 of 17 December 2007 (including the Final Act of the Intergovernmental Conference)

	Corrigenda - Procès-verbal of rectification to the Treaty of Lisbon OJ C 290 of 30 November 2009

1 January 2007	Documents concerning the accession of the Republic of Bulgaria and Romania to the European Union (2005) OJ L 157 of 21 June 2005

1 May 2004	Accession of the Czech Republic, Estonia, Cyprus, Latvia, Lithuania, Hungary, Malta, Poland, Slovenia and Slovakia (2003) OJ L 236 of 23 September 2003

1 February 2003	Treaty of Nice, 26 February 2001 OJ C 80 of 10 March 2001 The Treaty dealt mostly with reforming the institutions so that the Union could function efficiently after its enlargement to 25 Member States.

1 May 1999	Treaty of Amsterdam, 2 October 1997 OJ C 340 of 10 November 1997 The Treaty amended and renumbered the EU and EC Treaties.

1995	Accession of Austria, Finland and Sweden (1994)

1 November 1993	Treaty on European Union - Maastricht, 7 February 1992 OJ C 191 of 29 July 1992 The Maastricht Treaty changed the name of the European Economic Community to simply "the European Community" and created the pillar structure of the European Union.

1 July 1987	Single European Act (SEA) - Luxembourg, February 1986 The SEA introduced measures aimed at achieving an internal market plus institutional changes related to these.

1986	Accession of Spain and Portugal (1985)

1 January 1985	Greenland Treaty - Brussels, 13 March 1984

1981	Accession of Greece (1979)

1 June 1977	Treaty amending certain budgetary provisions - Brussels, 22 July 1975 (Second Budgetary Treaty)

1973	Accession of Denmark, Ireland and the United Kingdom (1972)

1 January 1971	Treaty amending certain budgetary provisions - Luxembourg, 20 April 1970 (First Budgetary Treaty)

1 July 1967	Merger Treaty - Brussels, 8 April 1965 The Treaty combined the executive bodies of the European Coal and Steel Community (ECSC), European Atomic Energy Community (Euratom) and the European Economic Community (EEC) into a single institutional structure.

1 January 1958	Treaties of Rome (Treaties establishing the European Economic Community (EEC) and the European Atomic Energy Community (Euratom)) - Rome, 25 March 1957

23 July 1952 (expired on 23 July 2002)	Treaty of Paris (Treaty establishing the European Coal and Steel Community) - Paris, 18 April 1951

	Consolidated versions

	Consolidated versions of the Treaty on European Union and the Treaty on the Functioning of the European Union (as amended by the Treaty of Lisbon) OJ C 83 of 30 March 2010

	Consolidated version of the Treaty establishing the European Atomic Energy Community OJ C 84 0f 30 March 2010

	Consolidated versions of the Treaty on European Union and the Treaty establishing the European Community OJ C 321E of 29 December 2006 (Incorporating the amendments made by the Treaty of Athens, signed on 16 April 2003)

	Treaty establishing the European Community (as amended by the Treaty of Nice) OJ C 325 of 24 December 2002

	Treaty on European Union (as amended by the Treaty of Nice) OJ C 325 of 24 December 2002