The Cambodian currency is the Riel that can fluctuate, since it is linked to the US dollar. Riel denominations are 100,000; 50,000; 20,000; 10,000; 5,000; 2,000; 1,000; 500; 200; 100 and 50. Banknotes, which are printed in both Khmer and English, increase in size according to value and are in different colors.
Foreign currencies can be easily changed at airports, hotels or markets, but American dollars are widely accepted in Cambodia. Credit cards are only accepted in banks and big hotels. It is easy to get cash from ATMs at the airport and many places in town.
However, the US Dollar is commonly used. There is no need to change from USD to Riel.