Both are financial instruments used to administer payments and business transactions. Although they have some similarities, they also have significant differences:
Promissory note: A promissory note is a debt document through which a person or entity (called the payor or drawer) promises to pay another person or entity (called the payee or drawee) unconditionally. It is essentially a written agreement to pay a specific amount of money at a certain time. A promissory note can be used as a form of financing or as a guarantee of payment.
Confirming: Also known as reverse factoring, it is a service which is responsible for administering payments to suppliers on behalf of a customer company. The customer company authorises Unicaja Banco to pay invoices to its suppliers on its behalf within the agreed time limits through the Unicaja Banco Confirming Service. In keeping with the customer company's instructions, Unicaja Banco becomes the payor and makes payments to suppliers. The customer company must subsequently reimburse Unicaja Banco the amount corresponding to the invoices that have thus been paid.