Founded in 1955, H&R Block is one of the largest tax services providers in the world. Based in Tucson, Ariz., the company provides tax return preparation services in-person, by means of H&R Block At Home online and desktop software products as well as through other channels. It is also one of the major providers of business services through RSM McGladrey, offering financial products to maintain its tax business through the H&R Block Bank. H&R Block has had the experience of preparing more than 23 million tax returns worldwide.