European Exchange Rate Mechanism
The European Exchange Rate Mechanism (ERM) II is a system introduced by the European Economic Community on 1 January 1999 alongside the introduction of a single currency, the euro (replacing ERM 1 and the euro's predecessor, the ECU) as part of the European Monetary System (EMS), to reduce exchange rate variability and achieve monetary stability in Europe.
After the adoption of the euro, policy changed to linking currencies of EU countries outside the eurozone to the euro (having the common currency as a central point). The goal was to improve the stability of those currencies, as well as to gain an evaluation mechanism for potential eurozone members. As of July 2021, three currencies participate in ERM II: the Danish krone, the Croatian kuna and the Bulgarian lev.