港幣（HKD）是香港特別行政區的流通貨幣，首張港幣由東方匯理銀行發行於1845年，距今已經超過179年。港元採用聯繫匯率制度，最初與英鎊掛鉤，但1972年6月英鎊改為自由浮動制後，港府決定將港幣改為與美金掛鉤，並延續至今。港府設定的浮動範圍在1美金兌7.75到7.85港元之間，如果匯率超出此范圍，金管局將出手干預，以維持穩定。在本港的找換店行業，港幣最經常兌換的外幣包括人民幣、日元、菲律賓披索、印尼盾以及美金。

The Indonesian Rupiah, commonly known as the Indonesian Rupiah, is the circulating currency of Indonesia. The Rupiah has been in circulation since 1946. Its ISO 4217 code is IDR, and it is commonly represented by the symbol Rp. The issuance and management of the Indonesian Rupiah are the responsibility of Bank Indonesia. Currently, there are banknotes in denominations of 1000, 2000, 5000, 10,000, 20,000, 50,000, and 100,000 Rupiah. Additionally, there are coins in values of 100, 200, 500, and 1000 Rupiah. While the Indonesian Rupiah may not be a globally mainstream trading currency, the demand for its exchange remains robust in Hong Kong due to the presence of over 160,000 Indonesian residents. Currently, all money changers in Hong Kong facilitate the exchange of Indonesian Rupiah.