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What Is the European Currency Unit (ECU)?


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    Highlights

  • The ECU was the official monetary unit of the EMS from 1979 until its replacement by the euro in 1999
  • It functioned as an accounting unit composed of a basket of up to 12 European currencies to determine exchange rates and reserves
  • The exchange rate mechanism (ERM) aimed to reduce variability and achieve stability but encountered issues like political infighting and currency attacks
  • The euro, which succeeded the ECU at a 1:1 ratio, is now used by 19 EU members and is the second-largest global currency
Table of Contents

What Is the European Currency Unit (ECU)?

Let me explain the European Currency Unit, or ECU, directly to you. It was the official monetary unit of the European Monetary System, known as the EMS, before the euro took its place. You should know that the ECU's value helped set exchange rates and reserves among EMS members, but it was strictly an accounting unit, never a physical currency you could hold.

Key Takeaways

Here's what you need to grasp about the ECU: it served as the monetary unit for the EMS until the euro replaced it. Introduced in 1979 and phased out in 1999, it was a composite from 12 European Union member countries. Alongside it came the exchange rate mechanism, or ERM, which aimed to cut down on exchange rate swings and build monetary stability across Europe.

Understanding the European Currency Unit (ECU)

I'll walk you through how the ECU came about. It launched on March 13, 1979, together with the ERM, all designed to steady exchange rates and foster monetary stability in Europe before the euro arrived at parity on January 1, 1999. The ECU stepped in for the European Unit of Account that same year.

The ERM's job was to cap fluctuations between currencies tied to the ECU. You could use the ECU in international financial deals, and securities denominated in ECU provided a way to diversify abroad.

Think of the ECU as an artificial currency built from a basket of EU member currencies, weighted by each country's EU output share. It began with nine currencies and grew to 12 by late 1989 through 1999. Those included the Belgian franc, German mark, Danish krone, Spanish peseta, French franc, British pound, Greek drachma, Irish pound, Italian lira, Luxembourg franc, Dutch guilder, and Portuguese escudo.

Special Considerations

You have to consider the EMS's history of currency instability and political clashes over national exchange rates. Other currencies had to trail the Bundesbank's monetary policy lead. Rates for strong ones like the Deutsche Mark and weaker ones like the Danish krone got adjusted periodically, but after 1986, national interest rate changes kept them in a narrow band.

Germany and Britain's economic cycles didn't align, partly because of German reunification, so Britain couldn't stay competitive in the ERM. It exited dramatically in 1992 after speculators, including George Soros, attacked Sterling on Black Wednesday. The UK and Denmark never joined the eurozone, and Greece came in late.

The euro name surfaced in 1995 in Spain. As an accounting currency, it started in 1999, replacing the ECU at 1:1. Physical euro coins and notes hit circulation in 2002, becoming the everyday currency for the area. Today, it's the official currency for 19 of the 27 EU members, plus four non-EU microstates.

Know this: the euro ranks as the second-largest and second-most traded currency globally, after the U.S. dollar. As of August 2022, over 29 trillion euro banknotes and more than 144 billion euro coins were in circulation.

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