A usance letter of credit is a financial instrument that defines the terms of payment of a debt at a later date. Typically, the terms and conditions contained in the letter of credit cover details such as the method of payment used to settle the debt, the total amount owed at the time of settlement, and the name of the payee. It is not uncommon for the letter of credit to be accompanied by supporting documents, such as an invoice showing the total amount owed, and even a deadline that can be processed on the agreed date.
