The United States Dollar (USD) is the official currency of the United States, first issued in 1792. It is identified by the ISO 4217 code USD and is commonly represented by the symbol $. The authority for issuing US dollars lies with the United States Department of the Treasury. Currently, circulating US dollar banknotes include denominations of 1, 2, 5, 10, 20, 50, and 100 dollars, along with coins in denominations of 1, 5, 10, 25, 50 cents, and 1 dollar. The U.S. Dollar ranks first globally in terms of trading volume, comprising 88.3% of the total global foreign exchange transactions. Local money changers in Hong Kong all offer the buying and selling of U.S. Dollars.

The Canadian Dollar (CAD) is the official currency of Canada and has been in circulation since 1858. It is represented by the ISO 4217 code CAD, and its symbols include $ or C$. The issuance and management of the Canadian Dollar are the responsibility of the Bank of Canada. Currently, there are banknotes in denominations of 5, 10, 20, 50, and 100 dollars, along with coins in values of 1, 5, 10, 25, 50 cents, and 1, 2 dollars.As Canada has consistently been one of the preferred destinations for Hong Kong residents for both tourism and immigration, the demand for exchanging Canadian dollars has been consistently high. All currency exchange stores in Hong Kong facilitate the exchange of Canadian dollars.