What is an international bank account number?¶

An international bank account number, or IBAN, is a structured identifier used to identify a bank account for international payments.

Avoid this assumption: An IBAN is proof of the account holder’s identity or location.

An IBAN usually contains a country code, check digits and elements identifying the bank and account.

It helps payment systems route and validate international transfers, but it does not by itself prove who owns or controls the account.

The country code generally relates to the account structure or banking jurisdiction. It does not necessarily show where the user was physically located when the payment was made.

An IBAN may identify an individual account, business account, pooled account, virtual account or account provided through a payment service.

Preserve the full IBAN exactly. A single incorrect character can identify a different account or cause an enquiry to fail.

Do not shorten it or replace characters with spaces inconsistently.

Use the IBAN alongside the account-holder name, BIC or SWIFT code, transaction reference, amount, currency, date and time.

Ask the relevant institution to confirm what account the IBAN identifies, who holds it, what service provided it and whether any intermediary or virtual account arrangement applies.

Where an IBAN appears in a fraudulent invoice or payment instruction, preserve the original communication and metadata. The same IBAN may be reused across several victims or cases.

Do not assume that payment to an IBAN means funds remained in that account. They may have been transferred onward quickly.

When reporting, state that the payment was sent to the account identified by the IBAN unless provider evidence supports a stronger conclusion.

Operational takeaway¶

Preserve the complete IBAN and use it to identify the destination account and institution, while treating ownership, control and location as separate evidential questions.