The European Monetary System (EMS) was a multilateral adjustable exchange rate agreement in which most of the nations of the European Economic Community (EEC) linked their currencies to prevent large fluctuations in relative value. It was initiated in 1979 under then President of the European Commission Roy Jenkins as an agreement among the Member States of the EEC to foster monetary policy co-operation among their central banks for the purpose of managing inter-community exchange rates and financing exchange market interventions.
The EMS functioned by adjusting nominal and real exchange rates, thus establishing closer monetary cooperation and creating a zone of monetary stability.