Bank codes are unique identifiers used to facilitate the processing of financial transactions between banks. These codes help ensure that money is transferred accurately and securely. Common types of bank codes include SWIFT codes, which are used for international transactions, and IBANs (International Bank Account Numbers), which help identify specific bank accounts across different countries. In addition to SWIFT and IBAN codes, there are also routing numbers used primarily in the United States. These numbers help identify the financial institution involved in a transaction, making it easier to process checks and electronic payments. Overall, bank codes play a crucial role in the global banking system.