International Bancshares Corporation is a multibank financial holding company that provides commercial and retail banking services in Texas and Oklahoma. It accepts checking and savings deposits and offers commercial, real estate, personal, home improvement, automobile, and other installment and term loans. The company also provides international banking services such as letters of credit, commercial and industrial loans, and foreign exchange, along with credit cards, safe deposit boxes, collections, escrow, drive-up and walk-up facilities, and internet and mobile banking, as well as securities products through third-party providers. Founded in 1966, it is headquartered in Laredo, Texas.