The €uro As of 2021, there are 19 member countries of the European Union that use the euro as the official currency.3 They are Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Portugal, Slovakia, Slovenia, and Spain. Advantages and Disadvantages of the Euro More facts • After the U.S. dollar, the euro is the second-most traded currency in the world. • It is the official currency of 19 countries in the European Union, as well as four non-EU territories. • The euro was created to facilitate and integrate the European economy, and it is managed by the ECB. • The Greek debt crisis threatened other EU countries, showing that the interdependency on currency does have a downside. • Other European countries such as Denmark use their own currency. They have opted to set their own interest rates and monetary policies and maintain the independence of their own economies