Economics has classified exchange rate systems into three broad categories, fixed system, pegged system and flexible system. In reality, several offshoots of these systems have developed over time. Macro economic crises in countries have also led to a system where there are no exchange rates.
This phenomenon is termed as the dollarization of an economy and usually happens when a country looses faith in its own currency due to severe macroeconomic mismanagement and adopts another country’s currency as its own. Usually the US dollar is the preferred currency in such cases, hence the term dollarization. This arrangement is also termed as ‘no separate legal tender’ as the country has given up its own legal tender or currency in favour of the US dollar.
The case of ‘no separate legal tender’ may also exist in a monetary union like the EU, where member countries give up their legal tenders in favour of a common currency.
Fixed Rate Systems
Under a fixed rate system, a variety of arrangements are being followed by different countries ranging from a currency board to a fixed rate system.
The currency board is usually backed by a legislative commitment and the nation undertakes to exchange foreign currency for the local currency at a fixed rate and vice versa. Under this system, the country looses its independence over its monetary policy as it issues local currency to the extent of its foreign reserves. This form of system helps control inflation and can be very beneficial for a country that has been through a macroeconomic crisis. Argentina follows a currency board arrangement for its currency, the Peso.
The traditional fixed rate system is not as rigid as the currency board. It allows periodic adjustment of the exchange rate and permits countries to follow independent monetary policies. However, if countries following this system, follow profligate monetary policies resulting in indiscriminate inflation, the economic backlash can be severe. The collapse of the South East Asian economies is attributable to this phenomenon.
Both the above mentioned systems are adopted with the objective of providing exchange rate stability and encouraging foreign investment.
Pegged Rate Systems
Under the pegged rate system, countries peg the value of their currency to a single currency or a basket of currencies, while also allowing a narrow fluctuation margin of 1% to 2%. Another variant of this system allows periodic adjustments in the exchange rate and is termed as the ‘crawling peg’. The Bahamas and Marshall Islands have pegged their currencies to the U.S. dollar; Niger and Senegal to the French franc; and Bangladesh, Czech Republic and Thailand to a basket of select currencies. Under the pegged system, a country’s central bank maintains the value of the currency through frequent interventions of buying and selling foreign exchange to maintain the value of the local currency or through changes in interest rates or a combination of both. Raising interest rates leads to inflow of foreign currency for investment in the country and helps the local currency to appreciate and vice versa. This exchange rate system provides considerable discretionary power to the country over its monetary policy compared to the fixed rate mechanism.
The Managed Float
This currency system is one step behind the fully flexible exchange rate system and is followed by countries that have strong and stable macro economies backed by sound financial institutions. Under this arrangement the currency of the country is allowed to float towards its market value and not maintained by the central bank. The central bank intervenes in the market to cushion any major fluctuations in order to protect the interests of importers and exporters. India is a prime follower of this currency system. Other countries include Pakistan, Taiwan and Venezuela.
>The Flexible Exchange Rate System
>Finally, countries with the strongest currencies follow a fully flexible exchange rate system, where the value of the currency is freely established by market forces. Interventions by the central bank are infrequent and occur only in the case of wild fluctuations.
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