Founded in 1974, Vertex Inc. is a privately held firm providing more than 10,000 corporate customers with tax compliance software and research services for sales and use tax, property tax, payroll tax, and telecommunications tax. Headquartered in Berwyn, PA, Vertex develops tax compliance solutions for use in Enterprise Resource Planning, Customer Relationship Management, and e-commerce applications. Vertex's solutions help end-users facilitate tax planning, develop tax reduction strategies, and identify other important factors that affect a company's tax structure.