Founded in 1955, H&R Block Inc. is one of the leading tax services providers in the world. Located in Phoenix, Ariz., it operates nearly 11,000 tax offices with approximately 65 in military bases. The company provides tax return preparation services through H&R Block At Home online and desktop software products through other channels. H&R Block Inc. operates two subsidiaries, McGladrey & Pullen and RSM McGladrey. McGladrey & Pullen is a certified public accounting (CPA) firm providing assurance services. RSM McGladrey is a professional services firm, providing tax and consulting services.