The Australian dollar is the currency of Australia. Our records show the Australian dollar is the seventh most traded currency with us. The banknotes are printed on a polymer (plastic) material. The Reserve Bank of Australia (RBA) is responsible for issuing the Australian banknotes. The Australian dollar is one of the highest traded currencies in the world and is known as a commodity currency due to its dependency on raw material exports. This currency is commonly referred to as buck, dough or the Aussie. The Australian dollar was the first currency to adopt the polymer printing method.