Arthur Andersen LLP was an American accounting firm based in Chicago that provided auditing, tax advising, consulting and other professional services to large corporations. By 2001, it had become one of the world's largest multinational corporations and was one of the "Big Five" accounting firms. The firm collapsed by mid-2002, as details of its questionable accounting practices for energy company Enron and telecommunications company WorldCom were revealed amid the two high-profile bankruptcies. The scandals were a factor in the enactment of the Sarbanes–Oxley Act of 2002.
Ernst & Young Global Limited, trade name EY, is a multinational professional services partnership. EY is one of the largest professional services networks in the world. Along with Deloitte, KPMG and PwC, it is considered one of the Big Four accounting firms. It primarily provides assurance, tax, information technology services, consulting, and advisory services to its clients.
KPMG International Limited is a multinational professional services network, and one of the Big Four accounting organizations, along with Ernst & Young (EY), Deloitte, and PwC. The name "KPMG" stands for "Klynveld Peat Marwick Goerdeler". The initialism was chosen when KMG merged with Peat Marwick in 1987.
PricewaterhouseCoopers International Limited is a multinational professional services brand of firms, operating as partnerships under the PwC brand. It is the second-largest professional services network in the world and is considered one of the Big Four accounting firms, along with Deloitte, EY, and KPMG.
H&R Block, Inc., or H&R Block, is an American tax preparation company operating in Canada, the United States, and Australia. The company was founded in 1955 by brothers Henry W. Bloch and Richard Bloch.
Deloitte Touche Tohmatsu Limited, commonly referred to as Deloitte, is a British multinational professional services network. Deloitte is the largest professional services network by revenue and number of employees in the world and is considered one of the Big Four accounting firms, along with EY, KPMG, and PwC.
Grant Thornton LLP is the American member firm of Grant Thornton International, the seventh largest accounting network in the world by combined fee income. Grant Thornton LLP is the seventh largest U.S. accounting and advisory organization. The firm operates 59 offices across the US with approximately 8,500 employees, 550 partners, and produces annual revenue in excess of US$1.9 billion.
RSM International, branded RSM since 2015, is a multinational network of accounting firms forming the sixth-largest accountancy professional services network in the world by revenue. RSM's member firms are independent accounting and advisory businesses, each of which practices in its own right and is unified as part of the network.
RSM Robson Rhodes LLP was a partnership of chartered accountants in the United Kingdom and Ireland. It was the UK member firm of RSM Global, the 6th largest network of professional accountancy firms in the world. With offices throughout the UK and Ireland, the firm offered auditing, consultancy and tax services to a wide variety of organisations in the private and public sectors.
RSM Tenon was a professional services firm based in the United Kingdom, which was listed on the FTSE SmallCap Index and part of RSM Global. The company was formed from the merger of the Tenon Group with RSM Bentley Jennison in December 2009.
Forvis Mazars is an internationally integrated partnership, specialising in audit, accounting and consulting group employing more than 47,000 professionals in more than 95 countries through member firms. With head offices in Paris, France, Mazars has a network of correspondent partners and joint ventures in a further 21 countries and is a founding member of the Praxity alliance, a network of independent firms. Mazars merged with Forvis to officially become Forvis Mazars as of June 1, 2024.
Grant Thornton is a multinational professional services company based in London, England. It is the world's seventh-largest by revenue and sixth-largest by number of employees professional services network of independent accounting and consulting member firms which provide assurance, tax and advisory services to privately held businesses, public interest entities, and public sector entities. Grant Thornton International Ltd. is a not-for-profit, non-practising, international umbrella membership entity organised as a private company limited by guarantee, and has no share capital.
FORVIS ranks among the U.S. top 10 public accounting firms, providing assurance, tax, and consulting services.
Dixon Hughes Goodman LLP was one of the two predecessor firms that merged to form Forvis, LLP.
An accounting network or accounting association is a professional services network whose principal purpose is to provide members resources to assist the clients around the world and hence reduce the uncertainty by bringing together a greater number of resources to work on a problem. The networks and associations operate independently of the independent members. The largest accounting networks are known as the Big Four.
Plante Moran is one of the largest audit, tax, consulting, and wealth management firms in the United States according to Inside Public Accounting's list of the “Top 100” firms. The firm employs more than 3,800 people and has 23 offices in Michigan, Ohio, Illinois, Colorado, Mexico, India, Japan, and China.
Bennett Thrasher LLP is a certified public accounting and consulting firm headquartered in Atlanta, Georgia that provides tax, audit, advisory and business process outsourcing services to businesses and high net worth individuals. The firm has 51 partners and more than 350 professionals, and is affiliated with BT Wealth Management, LLC and BT Family Office. Bennett Thrasher is also a member of Leading Edge Alliance and DFK International, which are worldwide associations of independent accounting and consulting firms.
Aprio, LLP is an accounting and business advisory firm headquartered in Atlanta, Georgia. Aprio is the fastest-growing firm in the United States, ranking 26th on the Top 100 Firms list published by Accounting Today, as well as the largest firm headquartered in the Southeastern United States and a top tax firm. Georgia judge Amy Totenberg, who is overseeing a case against alleged promoters of syndicated conservation easements indicated she sees a 'consistent pattern' across transactions that form the basis of the class-action lawsuit against Aprio.
Baker Tilly International is a consulting and public accounting firm. It is currently the 9th largest accounting network in the world by revenue with 43,000 people in 700 offices across 141 territories with combined global revenues of $5.2bn. Baker Tilly operates geographically through four regions: Asia Pacific; Europe, Middle East and Africa; Latin America; and North America. Each region has a chair, appointed by the International Board, who leads an advisory council elected by members in that region.
BDO is an international network of public accounting, tax, consulting and business advisory firms that provide professional services under the name BDO. It is the fifth-largest accounting network in the world. Global fee income of the member firms in the network for the year ended 30 September 2021, including the members of their exclusive alliances, totaled US$12.8 billion. Each BDO member firm is an independent legal entity in its own country. The network, founded in 1963 as Binder Seidman International Group by firms from Canada, Germany, the Netherlands, the UK and the US, is coordinated by BDO Global Coordination B.V., with an office in Zaventem, Belgium. In 1973, the organisation adopted the name BDO, made up from the initials of the three founding firms: Binder (UK), Dijker (Netherlands) and Otte (Germany).
$3.7 billion USD (2023)
