RBB Bancorp operates as the bank holding company for Royal Business Bank that provides various banking products and services to the Chinese-American, Korean-American, and other Asian-American communities. Its deposit products include checking, savings, and money market accounts, as well as certificates of deposit. The company also offers commercial and investor real estate loans; business loans and lines of credit; small business administration loans; trade finance; and single-family residential mortgage loans. In addition, it provides international letters of credit, SWIFT, export advisory, trade finance discount, and foreign exchange services; and remote deposit, e-banking, and mobile banking services, as well as treasury management services.