Bank Account Routing Identifiers

Bank account routing identifiers are the account and institution codes used to route domestic and cross-border payments to the correct bank, branch, or customer account. This branch covers bank account numbers, BBAN, BIC, IBAN, routing numbers, and sort codes.

Use these pages when a wire, ACH entry, direct deposit, international transfer, cheque, or reconciliation item depends on the exact routing details in the instruction.

What This Branch Covers

Decision Lens

Start with the payment route. The right account number is not enough if the bank code, branch code, routing number, IBAN, or BIC is missing, stale, or mismatched.

Evaluation Checklist

• Identify the sending bank, receiving bank, customer account, routing code, country or clearing system, instruction date, and return or correction status.
• Separate customer account number from bank identifier, branch code, correspondent-bank detail, and reference memo.
• Check payment instructions, bank records, validation results, return codes, statements, and correction notices.
• Review whether the identifier affects settlement, rejected payments, misdirected funds, fees, or reconciliation.
• Treat fraud, sanctions, privacy, legal, and liability conclusions as professional-advice areas.

Common Mistakes

• Using an old routing number after a bank merger or account migration.
• Confusing BIC, IBAN, and domestic routing numbers.
• Assuming a payment reference can correct a wrong account identifier.
• Reviewing a failed transfer without the original instruction and return code.

In this section

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