Founded and incorporated in 1955, H&R Block Inc. is one of the largest tax services providers in the world having prepared more than 550 million tax returns globally. The company operates through subsidiaries providing tax, banking, and business and consulting services. Based in Walnut Creek, Calif., it operates more than 12,000 offices in the United States. H&R Block Inc. assists customers in saving for retirement, buying a home, paying for college as well as managing a business.