The euro (EUR) is the official currency of 19 of the 27 member states of the European Union. As of the first quarter of 2021, the European Union, also known as the eurozone, consists of 27 member countries. The following countries have adopted the euro: Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Portugal, Slovakia, Slovenia and Spain.

The pound sterling, or GBP, is the official currency of the United Kingdom. The pound sterling is the oldest currency in continuous use and is the fourth most traded currency in the foreign exchange market, after the US dollar, euro and Japanese yen.