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What is IBAN?

IBAN stands for International Bank Account Number. It is the ISO 13616 international standard for numbering bank accounts. In 2006, the International Organization for Standardization (ISO) designated SWIFT as the Registration Authority for ISO 13616.


Use

The IBAN facilitates the communication and processing of cross-border transactions. It allows exchanging account identification details in a machine-readable form.


The ISO 13616 IBAN Standard

Structure

The IBAN structure is defined in ISO 13616-1 and consists of a two-letter ISO 3166-1 country code, followed by two check digits and up to thirty alphanumeric characters for a BBAN (Basic Bank Account Number) which has a fixed length per country and, included within it, a bank identifier with a fixed position and a fixed length per country. The check digits are calculated based on the scheme defined in ISO/IEC 7064 (MOD97-10).


Terms and definitions

Bank identifier: The identifier that uniquely identifies the financial institution and, when appropriate, the branch of that financial institution servicing an account. In this registry, the branch identifier format is shown specifically, when present

BBAN (Basic bank account number) The identifier that uniquely identifies an individual account, at a specific financial institution, in a particular country. The BBAN includes a bank identifier of the financial institution servicing that account.

IBAN (International bank account number) The expanded version of the basic bank account number (BBAN), intended for use internationally. The IBAN uniquely identifies an individual account, at a specific financial institution, in a particular country.

Submitters

Nationally-agreed, ISO13616-compliant IBAN formats are submitted to the registration authority exclusively by the National Standards Body or the National Central Bank of the country.