The Euro is the official currency of the European Union. It has been in circulation as electronic currency since 1999 and as physical banknotes and coins since 2002. Its ISO 4217 code is EUR, and it is typically represented by the symbol €. The issuance and management of the Euro are jointly handled by the European Central Bank and the central banks of the individual countries within the Eurozone. Currently, there are banknotes in denominations of 5, 10, 20, 50, 100, 200, and 500 Euros. Additionally, there are coins in values of 1, 2, 5, 10, 20, 50 Euro cents, and 1, 2 Euros. The Euro ranks second globally in terms of trading volume, and all money changers in Hong Kong support the exchange between the Hong Kong Dollar and Euro.

The Qatari Riyal (QAR) is the official currency of Qatar, first introduced in 1973. It is identified by the ISO 4217 code QAR and is commonly represented by the symbol ﷼. The issuance and management of the Qatari Riyal are overseen by the Qatar Central Bank. Currently, circulating banknotes include denominations of 1, 5, 10, 50, 100, and 500 Riyals, along with coins of 1, 5, 10, 25, and 50 Dirhams. The Dirham is the subsidiary currency of the Qatari Riyal, with 1 Riyal being equivalent to 100 Dirhams. According to Passto's statistics, there are three money changers across Hong Kong where you can buy and sell Qatari Riyal.