UK payment systems
What is an IBAN?
Acronym: IBAN · Full name: International Bank Account Number
Quick definition: An IBAN is an International Bank Account Number used to identify a bank account in a standard format for many cross-border payments.
At a glance
- IBAN stands for International Bank Account Number.
- It includes a country code, check digits and account information.
- It is used for many international payments.
- It is different from a UK sort code and account number, although those details may be embedded.
Explain it simply
An IBAN is a longer bank account number used for international payments. It starts with a country code, such as GB for the United Kingdom, and includes numbers and letters that help identify the account. If someone abroad needs to send money to your UK account, they may ask for your IBAN. You can usually find it in online banking or on a bank statement. It is important to copy it exactly because international payments can be harder to fix.
Student explanation
IBAN means International Bank Account Number. It provides a standardised way to write account details for cross-border payments. A UK IBAN usually includes the GB country code, check digits, a bank identifier and the domestic sort code and account number. Students should understand that an IBAN identifies an account, while a BIC identifies a financial institution. Depending on the destination country and payment route, both may be needed. IBANs reduce errors because the format includes check digits that can help detect mistakes.
Professional explanation
An International Bank Account Number is a standardised account identifier used in many international payment contexts. It combines a country code, check digits and basic bank account number elements in a structured format. For UK accounts, the IBAN incorporates domestic account routing information, but it should not be treated as interchangeable with a sort code and account number in every payment channel. IBAN validation supports format and check digit checks, while payment execution still requires scheme, institution, compliance and beneficiary controls. IBAN should be distinguished from Business Identifier Code, SWIFT messaging and local account identifiers.
UK example
A freelance designer in Manchester gives a client in Spain the IBAN shown in online banking so an invoice can be paid internationally.
Why it matters
IBANs reduce international payment errors and help people understand why overseas transfers require different details from UK domestic transfers.
Common misunderstanding
An IBAN is not a separate account; it is an international format for identifying an existing bank account.