A commercial letter of credit is a contractual agreement between a bank, known as the issuing bank, on behalf of one of its customers, authorizing another bank, known as the advising or confirming bank, to make payment to the beneficiary. The issuing bank, on the request of its customer, opens the letter of credit. The issuing bank makes a commitment to honor drawings made under the credit. The beneficiary is normally the provider of goods and/or services. Essentially, the issuing bank replaces the bank’s customer as the payer.