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 Tongan pa'anga (TOP) is the currency of Tonga and is governed by the National Reserve Bank of Tonga. The currency is not convertible and is pegged to the basket of currencies including the Australian dollar, New Zealand dollar, US dollar, and Japanese yen. The Tongan pa'anga is subdivided into 100 senitis. The symbol of the pa'anga is T$.