Commodity currency Canadian dollar, New Zealand dollar, Norwegian krone, South African rand, Brazilian real, Russian ruble and the Chilean peso. Due to the nature of commodity currencies being tied to commodities, being tied to any one good can be beneficial as well as problematic for the country. While naturally, falling or rising exports will lead to deflation or inflation respectively in any country the impacts are more severe in countries with commodity currencies at their currency is so heavily tied to a set few commodities. According to a 2009 study on commodity currency titled “Can Exchange Rates Forecast Commodity Prices?” by Yu-chin
Currency substitution On the other hand, currency substitution leads to the loss of seigniorage revenue, the loss of monetary policy autonomy, and the loss of the exchange rate instruments. Seigniorage revenues are the profits generated when monetary authorities issue currency. When adopting a foreign currency as legal tender, a monetary authority needs to withdraw the domestic currency and give up future seigniorage revenue. The country loses the rights to its autonomous monetary and exchange rate policies, even in times of financial emergency. For example, former chairman of the Federal Reserve Alan Greenspan has stated that the central bank considers the effects of