Deloitte Touche Tohmatsu Limited , commonly referred to as Deloitte, is one of the "Big Four" professional services firms along with PwC, EY, and KPMG. Its global headquarters are located in the United States.
Deloitte is the largest professional services network in the world by revenue and by the number of professionals. Deloitte provides audit, tax, consulting, enterprise risk and financial advisory services with more than 200,000 professionals in over 150 countries. In FY 2013–14, it earned a record $34.2 billion USD in revenues.
In 2012, Accountancy Age reported that, in the UK, Deloitte had the largest number of clients amongst FTSE 250 companies.
