The official currency of Argentina is the Argentine peso (ARS) . It is subdivided into 100 centavos, but due to rapid inflation, coins with a face value below one peso are now rarely used. The symbol for the Argentine peso is the same as the dollar sign ($), and it is denoted as ARS in international currency exchange markets. It is best to have small denominations of Argentine pesos to spend in Argentina, but if you cant buy some before your trip, the next best options are US dollars (USD), Euros (EUR), or Brazilian Reals (BRL) . You can easily exchange these foreign currencies at currency exchanges and banks. U.S. dollars are not widely accepted in Buenos Aires, but you can still use them to pay in some business-class hotels, tourist-popular restaurants, and businesses catering to large numbers of tourists.