IBAN is short for International Bank Account Number. This is a long account number used by banks for cross-border transfers. Each country structures this number differently, but it always starts with a 2 letter country code (e.g. DE for Germany).
Every bank account has a unique IBAN code, and this is required when sending funds internationally. IBANS are issued by many banks in Europe and other banks internationally are starting to recognise them as well.
When setting up a new recipient you will need the IBAN of the account you wish to send funds to. The IBAN can be found by logging into your online banking or by checking bank statements.
If you are sending funds to the US you will be required to enter the Account Number and Bank Routing Number instead of an IBAN. A Bank Routing number is a 9-digit code assigned to each financial in the United States. When you enter this alongside a payee’s account number it will help identify the exact bank account for your money transfer, similar to a sort code in the UK.