What Is an Exchange Rate Mechanism (ERM)?

An exchange rate mechanism (ERM) is a set of procedures used to manage a country's currency exchange rate relative to other currencies. It is part of an economy's monetary policy and is put to use by central banks.

Such a mechanism can be employed if a country utilizes either a 澳洲幸运5开奖号码历史查询:fixed exchange rate that is bounded by a 澳洲幸运5开奖号码历史查询:currency peg, or one with a constrained floating exchange rate (known as an 澳洲幸运5开奖号码历史查询:adjustable peg or crawling peg).

Understanding the Exchange Rate Mechanism

Monetary policy is the process of drafting, announcing, and implementing the plan of actions taken by the central bank, 澳洲幸运5开奖号码历史查询:currency board, or other competent monetary authority of a country that controls the quant🥀ity of money in an economy and the channels by which new money is supplied. Under a currency board, the management of the exchange rate and money supply is given to a monetary authority that makes decisions about the valuation of a nation’s currency. Often, this monetary authority has direct instructions to back all units of domestic currency in circulation with foreign currency. 

An exchange rate mechanism is not a new concept. Historically, most new currencies started as a 澳洲幸运5开奖号码历史查询:fixed exchange mechanism that tracked gold or a widely traded commodity. It is loosely based on fixed 澳洲幸运5开奖号码历史查询:exchange rate margins, whereby exchange rates fluctuate 🥃within certain margins.

An upper and lower bound interval allows a currency to experience some variability without sacrificing 澳洲幸运5开奖号码历史查询:liquidity or drawing additional economic🔯 risks. The concept of currency exchange rate mechanisms is also referred to as a semi-pegged currency system.

Real World Examꦇple: The Europ🏅ean Exchange Rate Mechanism

The most notable exchange rate mechanism occurred in Europe during the late 1970s. The European Economic Community introduced the ERM in 1979, as part of the 澳洲幸运5开奖号码历史查询:European Monetary System (EMS), to reduce exchange rate variability and✱ achieve stability before member countries moved to a single currency. It was designed to normalize exchange rates between countries before the⛄y were integrated in order to avoid any problems with price discovery.

The exchange rate mechanisms came to a head in 1992 when Britain, a member of the European ERM, withdrew from the treaty. The British government initially entered the agreement to prevent the British pound and oth🐻er member currencies fr🎃om deviating by more than 6%.

Real World Example: Soros and Black Wednesday

In the months leading up to the 1992 event, legendary investor George Soros had built up a monumental 澳洲幸运5开奖号码历史查询:short position in the pound sterling that became profitable if the currency fell below the lower band of the ERM. Soros recognized that Britain entered the agreement under unfavorable conditions, the rate was too high, and economic conditions were fragile. In September 1992, now known as 澳洲幸运5开奖号码历史查询:Black Wednesday, Soros sold off a large portion of his short position ꧅to the dismay of the Bank of England, who ⛄fought tooth and nail to support the pound sterling.

The European exchange rate mechanism dissolved by the end of the decade, but not befor♍e a successor was installed. The (ERM II) was formed in January 1999 to ensure that exchange rate fluctuations between the Eurꦆo and other EU currencies did not disrupt economic stability in the single market. It also helped non-euro-area countries prepare to enter the euro area.

Most non-euro-area countries agree to keep exchange rates bound to a 15% range, up or down, against the central rate. When necessary, the European Cent💮ral Bank (ECB) and other nonmember countries can intervene to keep rates in the window. Some current and former members of the ERM II include Greece, Denmark, and Lithuania.