In macroeconomics and economic policy, a floating exchange rate (also known as a fluctuating or flexible exchange rate) is a type of exchange rate regime in which a currency's value is allowed to fluctuate in response to international events affecting exchange rates. A currency that uses a floating exchange rate is known as a floating currency. In contrast, a fixed currency is one where its value is specified in terms of material goods, another currency, or a group of other currencies. The idea of a fixed currency is to reduce currency fluctuations.
In the modern world, most of the world's currencies are floating, and include the majority of the most widely traded currencies: the United States dollar, the euro, the Japanese yen, the pound sterling, or the Australian dollar. However, even with floating currencies, central banks sometimes participate in markets to attempt to influence the value of floating exchange rates. The Canadian dollar has not seen interference by the Canadian national bank with its price since September 1998. The US dollar also sees very little change of its foreign reserves.
