meta_id 3428740

On August 24, 2026, Brazil's Central Bank (Banco Central do Brasil/BCB) published Resolution BCB No. 585, which establishes the International Bank Account Number (IBAN) standard as the mandatory format for identifying Brazilian bank accounts in international fund transfers. The resolution adopts the ISO 13616 standard and supersedes previous guidance issued under Circular No. 3,625. The IBAN format comprises 29 characters structured as follows: two alphanumeric characters for the country code (ISO 3166-1); two check digits (mod 97, ISO 7064); eight alphanumeric characters for the participant identifier in the Brazilian Payment System (Sistema de Pagamentos Brasileiro/SPB); five numeric characters for the bank branch identification; ten numeric characters for the customer account number; one alphanumeric character for the account type; and one alphanumeric character identifying the account holder. Account holders are identified numerically (1-9) or alphabetically (A-Z) for multiple account holders. The resolution specifies that IBAN validation must be case-insensitive, numeric fields must be left-padded with zeros where necessary, and presentation must use groups of four characters separated by spaces in uppercase letters to facilitate automation and electronic reading. Financial institutions and other entities authorized by the BCB must provide customers with their IBAN identification upon request and accept international fund transfers using the IBAN format, performing appropriate validations. The resolution entered into force upon publication on August 24, 2026. REFERENCES: Resolução BCB n° 585 de 24 de agosto de 2026 — Banco Central do Brasil https://www.bcb.gov.br/