Operational since 1978, Vertex is a privately held company that provides tax technology solutions. It helps companies to streamline tax compliance processes. The company operates offices in Georgia, Texas, Arizona, Illinois and Washington, D.C., as well as London. Vertex offers information on various business tax issues, such as income, payroll, consumer use, sales and communications. The company manages a staff of more than 600 employees and serves over 10,000 corporate customers. It offers indirect, direct and industry tax solutions. The company serves the retail, pharmaceutical, chemical and software industries. Its Vertex Lease Tax O Series offers solutions for issues associated with tax compliance. Vertex s clients include McDonalds Corporation and Kewaunee Scientific Corporation.