which eu countries don't use the euro
Eurozone The eurozone consists of Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Portugal, Slovakia, Slovenia, and Spain. Other EU states (except for Denmark and the United Kingdom) are obliged to join once they meet the criteria to do so.[8] No state has left, and there are no provisions to do so or to be expelled.[9] Andorra, Monaco, San Marino, and Vatican City have formal agreements with the EU to use the euro as their official currency and issue their own coins.[10][11][12] Kosovo and Montenegro have adopted the euro unilaterally,[13] but these countries do not officially form part of the eurozone and do not have representation in the European Central Bank (ECB) or in the Eurogroup.[14]
European Union The EU and European citizenship were established when the Maastricht Treaty was enacted in 1993.[19] The EU traces its origins to the European Coal and Steel Community (ECSC) and the European Economic Community (EEC), established, respectively, by the 1951 Treaty of Paris and 1957 Treaty of Rome. The original members of what came to be known as the European Communities were the Inner Six: Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany. The Communities and its successors have grown in size by the accession of new member states and in power by the addition of policy areas to its remit. The latest major amendment to the constitutional basis of the EU, the Treaty of Lisbon, came into force in 2009. While no member state has left the EU or its predecessors, the United Kingdom signified an intention to leave after a membership referendum in June 2016 and is negotiating its withdrawal.