Antigua Commercial Bank (ACB) was incorporated in 1955, with a share capital of EC$100,000. It is the country's first indigenous bank and public company. ACB is well known for its role in assisting local entrepreneurs and small business owners. Its subsidiary, ACB Mortgage and Trust Company Ltd., is the largest indigenous provider of mortgage financing on the island. ACB aims "to be the leading financial services provider by exceeding our stakeholders’ expectations through exemplary service, innovative products and adapting to an ever-changing environment."

The Bank operates three (3) branches and two (2) agencies and has ten (10) Automated Teller Machines, the largest network of ATMs on the island. ACB has a staff complement of one hundred and twenty (120), and is one of the largest indigenous commercial banks in Antigua & Barbuda, with an audited asset base of US $323 million as at September 30, 2011.