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 currency will be satisfied in the holding of foreign currency assets abroad and outside the domestic banking system. This demand often puts pressure on the parallel market of foreign currency and on the country's international reserves. Evidence for this pattern is given in the absence of currency substitution during the pre-reform period in most transition economies, because of constricted controls on foreign exchange and the banking system. In contrary, by facilitating the domestic holding of foreign currency, a country might mitigate the shift of assets abroad and strengthen its external reserves in exchange for a currency substitution process. However, the