Deloitte Touche Tohmatsu Limited, also known as Deloitte, is a multinational professional services network with offices in more than 150 countries and territories worldwide. Based in London, England, Deloitte is one of the Big Four Accounting Firms and the world's largest professional services network in revenue and personnel.

Member firms of Deloitte provide services like as:

• Audit
• Financial advisory
• Consulting
  
• Tax and legal
• Risk advisory
  
• GovLab

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Revenue: $46.2B
Website: https://www2.deloitte.com/us/en.html
Facebook: https://www.facebook.com/deloitte/

PwC is an international professional services network of organizations that act as partnerships under the PwC brand. PwC is the world's second-largest professional services network and one of the Big Four accounting firms, along with Deloitte, EY, and KPMG. 4,444 PwC companies employ 284,000 people in 157 countries and 742 locations.

The current version of the company was founded in 1998 by the merger of two accounting firms, Coopers & Lybrand and Price Waterhouse. Both companies have a history dating back to the 19th century. As part of the brand change, the product name has been abbreviated to PwC.

Based in London, England, PricewaterhouseCoopers International Limited acts as a coordinating unit for the global network. Oversee global brands and develop policies and programs to promote a unified and coordinated approach to risk, quality, and strategy.

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Revenue: $42.4B
Website: https://www.pwc.com/
Facebook: https://www.facebook.com/PwC

EY (Ernst & Young Global Limited) is a global professional services network headquartered in London, England. EY is one of the world's leading professional services networks. Along with Deloitte, KPMG, and PricewaterhouseCoopers, it is one of the four major accounting firms.

EY primarily provides its clients with auditing, taxation, advisory, and advisory services. In recent years, like many large accounting firms, EY has expanded into non-accounting sectors such as strategy, operations, human resources, technology, and financial services advisory.

EY operates as a network of member firms formed as separate legal entities in partnership with 312,250 employees in more than 700 offices in more than 150 countries. The company's current partnership was established in 1989 by the merger of two audit firms, Ernst & Whiney and Arthur Young & Co. It operated as Ernst & Young until it was renamed in 2013 and officially renamed EY in 2013. However, this initialization was used informally before it was approved by the regulatory agency.

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Revenue: $36.4B
Website: https://www.ey.com/
Facebook: https://www.facebook.com/EY/

KPMG International Limited (or simply KPMG) is a global professional services network based in the United Kingdom and the Netherlands and part of the Big Four accounting firms.

KPMG is a corporate network of more than 236,000 employees and 145 countries with three service areas: audit, tax, and consulting. Headquartered in Amstelveen, the Netherlands, but built into the United Kingdom. In addition, we classify tax and advisory services into several service categories. Over the last decade, various segments of the company's subsidiary's global network have been involved in government procedures and legal disputes.

KPMG companies in each country are individual legal entities that are members of KPMG International Limited, a UK limited company based in London. This structure, in which Limited Business provides exclusive support services to member companies, is similar to the structure of other professional service networks.

The KPMG consists of three service lines:

• Audit
• Advisory
• Tax

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Revenue: $29.75B
Website: https://home.kpmg/xx/en/home.html
Facebook: https://www.facebook.com/KPMG

BDO is a multinational network of auditing, tax, consulting, and management consulting firms operated under the BDO brand. BDO has member companies from 167 countries and employs approximately 91,000 partners and employees in more than 1,658 locations around the world.

Each BDO member company operates as an independent legal entity in its own country. BDO Global Coordination B.V., with an office in Zaventem, Belgium, coordinates the network founded in 1963 as Binder Seidman International. In 2009, all BDO member companies changed their names to BDO. The

BDO is expected to grow rapidly in China in early 2012. With 7,5008,000 employees in mainland China and Hong Kong, it is the second-largest employer after the United States with 11,500 employees. According to the Global Chairman, China's workforce is expected to outpace the United States in three to four years.

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Revenue: $9.6B
Website: https://www.bdo.global/en-gb/home

RSM International is a global network of accounting firms that ranks as the world's sixth-largest accountancy professional services network by revenue. RSM member firms are independent accounting and advisory firms that act independently but are linked as part of the RSM network.

The network is not a separate legal organization in any jurisdiction and does not offer any services. The major member firms are RSM US, formerly McGladrey, and RSM UK, formerly Baker Tilly LLP. The network's member companies were all rebranded RSM as of 2015.

RSM, like every other accounting company in the globe, offers the following service lines:

• Audit and Financial reporting
• Tax advice
• Advisory

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Revenue: $2.44B
Website: https://www.rsm.global/
Facebook: https://www.facebook.com/GlobalRSM/

Mazars is an independent, international firm that specializes in audit, accounting, tax, and consultancy services.
Mazars has access to the expertise of 40,400 people in 91 countries. This company is a founding member of the Praxity alliance, a network of independent firms, with headquarters in 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. Robert Mazars founded the first Mazars enterprise in Rouen, Normandy, France, in 1945. The firm remained a regional organization until the 1980s, when former CEO Patrick de Cambourg began to internationalize the company, growing it from 33 workers in 1977 to the global company it is today.

Mazars' professionals include Chartered Accountants, Certified Public Accountants, Masters in Accounting and Finance, Masters in Business and Administration, IT Consultants, and Cost Accountants, all of whom have the necessary business and technical skills, experience, and knowledge to provide customized solutions to clients.

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Revenue: $2.18B
Website: https://www.mazars.com/
Facebook: https://www.facebook.com/MazarsGroup

Smith & Williamson is a financial and professional services business based in the United Kingdom. The firm is also a UK member firm of Nexia International, a global network of accounting, auditing, and consulting firms.

For nearly a century, Smith & Williamson has managed the financial concerns of individual customers and their corporate interests. The business, which was founded in Glasgow in 1881, has developed and evolved through the years to offer a wide range of additional services.

Smith & Williamson amalgamated in 2002 with NCL (Securities) Limited (which included Cunningham Coates in Northern Ireland) and in 2005 with Solomon Hare, a UK accountancy and financial advising business. These mergers, as well as the 2011 acquisition of Begbies Traynor's tax division, have contributed to our expansion and success.

Smith & Williamson is currently one of the top 10 accounting companies in the UK, and its investment management division manages around £22.9 billion in assets. The business, which employs over 1,800 employees in 12 locations throughout the UK, Ireland, and Jersey, offers a diverse variety of financial and professional services to fulfill the needs of customers.

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Revenue: $361.66M
Website: https://smithandwilliamson.com/en/

PKF International (formerly known as Pannell Kerr Forster) is a multinational accounting company network. The 224 member enterprises of the network operate under the PKF name in 150 countries throughout five regions. PKF Multinational employs 20,000 people and is ranked 14th among international accounting networks by International Accounting Bulletin.

Pannell Kerr Forster was established in 1969 when four accounting companies from Australia, Canada, the United Kingdom, and the United States joined together to form an international organization.

In 1980, member businesses agreed to develop a worldwide accounting brand by using Pannell Kerr Forster as their common brand name. Member firms opted to abbreviate their name to PKF in 2000. In their home markets, member businesses are now adopting this moniker or adding PKF as a prefix to their existing corporate name.

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Revenue: $115.5M
Website: https://www.pkf.com/
Facebook: https://www.facebook.com/TeamPKF

Moore Global (formally Moore Global Network Limited) is a global network of independent accounting and consulting businesses headquartered in London. It is a network of over 30000 employees spread over 260 separate enterprises and 110 countries.

Moore was formed in 1907 as Moore, Partridge & Co. After one of the founders, Albert Partridge, left, it became Moore & Co, and then Moore, Stephens & Co in 1918 when John Robinson Stephens, the firm's manager at the time, teamed with founder Harold Moore. Moore Stephens was founded in 1986, and Moore Stephens International Limited was renamed Moore Global Network Limited in September 2019.

Moore Global's principal business is managing audits and dealing with multi-jurisdictional tax concerns for multi-national enterprises. As a result, the scope of their worldwide client management goes beyond providing compliance services to advising on foreign business structures and tax planning to minimize tax payments.

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Revenue: $80.19M
Website: https://www.moore-global.com/
Facebook: https://www.facebook.com/moore.global/