Cathay General Bancorp operates as the holding company for Cathay Bank that offers various commercial banking products and services for individuals, professionals, and small to medium-sized businesses in the United States. It offers various deposit products, including passbook accounts, checking accounts, money market deposit accounts, certificates of deposit, individual retirement accounts, college certificates of deposit, and public funds deposits. The Company's loan portfolio consists of commercial mortgage loans, commercial loans, small business administration loans, residential mortgage loans, real estate construction loans, and home equity lines of credit, as well as installment loans to individuals for automobile, household, and other consumer expenditures. In addition, it provides letters of credit, wire transfers, forward currency spot and forward contracts, traveler's checks, safe deposit, night deposit, social security payment deposit, collection, bank-by-mail, drive-up and walk-up windows, automatic teller machines, Internet banking, investment, and other customary bank services, as well as securities and insurance products.