The Chase IBAN number in the UK is a unique international banking identifier used to receive funds from abroad securely and efficiently. It includes your account number, bank code, and the country code (GB for the UK), making cross-border transfers faster and more accurate. If you have a Chase UK account and need to receive payments internationally, providing your correct IBAN is essential to avoid delays or failed transactions. Always double-check your IBAN through your banking app or statement before sharing it.