IBC was founded in 1966 to meet the needs of the small businesses of Laredo, Texas. Today, it serves as the flagship bank of International Bancshares Corporation. Since its opening, IBC has grown from less than $1 million in assets to over $10.6 billion making it Texas? largest holding company. IBC now serves more than 97 communities throughout Texas and Oklahoma with more than 250 branches and more than 380 ATM'S.