The firm's current partnership was formed in 1989 by a merger of two accounting firms Ernst & Whinney and Arthur Young & Co.
ĮY operates as a network of member firms which are structured as separate legal entities in a partnership, which has 312,250 employees in over 700 offices in more than 150 countries around the world.
Like many of the larger accounting firms in recent years, EY has expanded into markets adjacent to accounting, including strategy, operations, HR, technology, and financial services consulting. It primarily provides assurance (which includes financial audit), tax, consulting and advisory services to its clients. Along with Deloitte, KPMG and PricewaterhouseCoopers, it is considered one of the Big Four accounting firms. EY is one of the largest professional services networks in the world.
Ernst & Young Global Limited, doing business as EY, is a multinational professional services network with headquarters in London, England.