The Brunei Dollar (BND), also known as the Brunei Ringgit, is the official currency of Brunei, and it has been in circulation since 1967. It is represented by the ISO 4217 code BND, and its symbol is commonly denoted as $ or BN$. The issuance and management of the Brunei Dollar are the responsibility of the government and financial institutions of Brunei. Currently, there are banknotes in denominations of 1, 5, 10, 20, 25, 50, 100, 500, 1000, and 10,000 Brunei Dollars, along with coins in values of 1, 5, 10, 20, and 50 cents.

The Japanese Yen is the circulating currency of Japan, with issuance dating back to 1871. Its ISO 4217 code is JPY, and it is commonly represented by the symbols ¥ or 円. The Bank of Japan is responsible for the issuance and management of the Japanese Yen. Currently, there are banknotes in denominations of 1000, 5000, and 10,000 Yen, along with coins in values of 1, 5, 10, 50, 100, and 500 Yen. Japan has consistently been a popular travel destination for Hong Kong residents, with the number of Hong Konger traveling to Japan reaching 2.11 million in 2023. The demand for Japanese Yen exchange has remained high. Currently, all money changers in Hong Kong facilitate the exchange of Japanese Yen.