Currently only Denmark and the UK have opted out while all the states that joined in 2004 and 2007 are obliged under the Accession Treaty to move their economies to a position where they can adopt the euro.
Tikai Dānija un Apvienotā Karaliste atteikušās no eiro, bet visām valstīm, kas pievienojās 2004. un 2007. gadā, ir obligāti jāvirza savas tautsaimniecības uz pievienošanos eirozonai.