Treaty concerning the accession of the Czech Republic, the Republic of Estonia, the Republic of Cyprus, the Republic of Latvia, the Republic of Lithuania, the Republic of Hungary, the Republic of Malta, the Republic of Poland, the Republic of Slovenia and the Slovak Republic to the European Union
Treaty between the Kingdom of Belgium, the Kingdom of Denmark, the Federal Republic of Germany, the Hellenic Republic, the Kingdom of Spain, the French Republic, Ireland, the Italian Republic, the Grand Duchy of Luxembourg, the Kingdom of the Netherlands, the Republic of Austria, the Portuguese Republic, the Republic of Finland, the Kingdom of Sweden, the United Kingdom of Great Britain and Northern Ireland (Member States of the European Union) and the Czech Republic, the Republic of Estonia, the Republic of Cyprus, the Republic of Latvia, the Republic of Lithuania, the Republic of Hungary, the Republic of Malta, the Republic of Poland, the Republic of Slovenia, the Slovak Republic, concerning the accession of the Czech Republic, the Republic of Estonia, the Republic of Cyprus, the Republic of Latvia, the Republic of Lithuania, the Republic of Hungary, the Republic of Malta, the Republic of Poland, the Republic of Slovenia and the Slovak Republic to the European Union.
Countries involved in the treaty, with newly joining countries in yellow, and existing EU countries in blue.
The European Union comprises a large number of overlapping legal structures which is a result of it being defined by successive international treaties.
As well as other acts[1] which together form the current legal framework (acquis) of the EU, the Treaty of Accession 2003 modifies:
All changes to the above treaties are made by article 11-19 in part two of the accession treaty. Beside of revising voting weights and the number of member state representatives at all European institutions, the most notable change outlined how Qualified Majority Voting shall be handled in the Council of the European Union. As from 1 November 2004, whenever the Council vote to adopt a decision by Qualified Majority, this need support both from a majority of member states which at the same time represents minimum 232 out of 321 weighted votes (72,3%), while also as a third requirement those states must represent at least 62% of the total population of the Union. Otherwise the decision in question shall not be adopted.
The Treaty of Accession was selected as a main motif in numerous collectors' coins. One of sample is the €10 Greece EU Presidency commemorative coin, minted in 2003 to celebrate the event. In the obverse of the coin is written in English and Greek "Hellenic Presidency of E.U." with the official insignia of the Greek presidency of the Council of the European Union in 2003 shown in the center.