Updated 18 May 2020
The global accountancy market has a total value of approximately $500 billion and employs more than 600,000 people worldwide.
For several years, this industry sector has been dominated by the ‘Big Four’: the world’s top accounting firms, namely EY, Deloitte, KPMG and PwC.
That is not to say that there aren’t other important players. In this updated list, we offer an overview of the top 50 accounting firms that take the spotlight at a global level (listed in alphabetical order).
1. Armstrong Watson
One of Britain’s longest-established firms, with over 150 years of experience. Offers a range of services including cloud accounting, tax consultancy and management accounts.
2. Baker Tilly International
This Chicago-based company has an international presence, with member firms in nearly 150 countries. It's often listed among the top certified public accountancy companies in the US.
During the first quarter of 2019, BDO merged with Moore Stephens, becoming the fifth-largest accounting company in the UK. The company is a member of BDO Global, an accountancy network with a presence in more than 160 countries and headquartered in Belgium.
4. Bebgbies Traynor
This British firm has its headquarters in Manchester and has been operating for almost 30 years. Begbies Traynor is known for its strong know-how in corporate restructuring, which is provided at each of its 75 UK offices.
BKD is a Missouri-based firm that has more than 2,600 employees. It has experienced rapid expansion following a number of acquisitions of financial and accountancy firms across the US.
Based in the City of London, this firm has been operating for almost a century. Over the decades, it has developed strong acumen in areas like corporate finance, outsourcing, audits and taxation. It is also a member of Prime Global, which gives it international exposure.
7. Cherry Bekaert
Headquartered in Virginia, this firm is the second-largest chartered public accountancy company in the southeast of the US. Cherry Bekaert mainly offers assurance, wealth management, tax and advisory services.
8. Citrin Cooperman
With headquarters in Manhattan, this full-service accountancy firm primarily serves clients in government, legal, healthcare, manufacturing, non-profit and logistics sectors. The company was founded in 1979 and ranks among the 25 largest accounting firms in the US.
9. Cohen & Co.
Cohen & Co. has its headquarters in Cleveland and is one of the largest chartered public accountancy firms in the US. The company provides accounting support in areas like investment, business development and financial management.
Since its foundation in 1997, CRI has grown to become one of the top 100 accounting firms in the US. The firm offers services in auditing, risk management and financial planning.
11. Crowe Horwath
With headquarters in Chicago, Crowe Horwath often appears in the list of top accounting firms in the world and has a portfolio that includes risk and performance consulting, advisory, tax and audit services.
In 2018, Deloitte topped the list of the biggest accountancy firms in the world and was also listed among the five largest private companies in the US. Its tax, audit, assurance and advisory services are available to companies in the consumer, finance, government, energy, technology and healthcare industries.
13. Doeren Mayhew
This chartered public accountancy firm provides its services to mid-size companies in over 100 different business sectors. Key specialisations include dental CPA, litigation support, strategic advisory and fraud services.
14. Duncan & Toplis
This East Midlands firm was founded in 1925 and is currently among the UK’s top 30 accountancy practices. Its services focus on academic institutions, small businesses and private individuals.
Founded in the UK in the mid-19th century, EY is now the world’s third-largest accounting company. It offers services in assurance, advisory and tax, with a focus on regulatory compliance and growth.
16. Frank Hirth
Frank Hirth’s origins go back to the 1970s. This London-based chartered accountancy firm specialises in tax compliance for the UK and US markets.
17. Friedman LLP
Founded in 1924, this award-winning Manhattan firm now operates globally offering forensic, tax, valuation and compliance services to clients in industry sectors like healthcare, legal, technology, automotive and digital currency.
18. Grant Thornton
Often listed among the world’s top accounting firms, Grant Thornton is an international firm with more than 25 offices in the UK and is known for its strong know-how in tax, advisory and audit services.
19. Hacker Young
Hacker Young is one of the top-rated firms in the UK and is part of the global accountancy network, UHY International. Key services include tax investigations, VAT, private finance and cloud accounting.
20. Haines Watts
Operating for more than 80 years and provides support with anything from online accounting to VAT and wealth protection.
Based in the City of London, Haysmacintyre ranks high among British accountancy firms and has specialist teams in restructuring, tax, VAT, audits and assurance, among others.
Founded in 1919, this Gloucestershire-based firm is currently one of the leading accountancy and auditing firms in the UK and is a member of global accountancy network, HLB.
23. HW Fisher
Since the early 1930s, this London-based chartered accountancy firm has been providing support to private and corporate clients in areas like audits, forensic accounting, business recovery, taxation and more.
24. Johnston Carmichael
This Edinburgh-based practice is one of the largest and oldest accountancy firms in Scotland and ranks among the UK’s top 20. The firm boasts strong expertise in personal finance, restructuring, VAT and wealth management.
25. Kingston Smith
This UK-based firm was founded in the early 1920s and has since been providing a wide range of legal, compliance, audit and outsourcing services to businesses and not-for-profit organisations.
In 2018, KPMG was the world’s fourth-biggest accounting firm. Audit and advisory services account for nearly 80% of KPMG’s revenues, although it is also recognised for its expertise in risk management and international tax.
27. Kreston Menon
This Dubai-based firm is part of a global network of independent accountancy firms and is also the leading accounting company in the Middle East. Kreston Menon mainly provides bookkeeping, compliance, risk management and FAAS services.
28. Macquarie Group
This Australian financial management firm has a dedicated accounting practice in London, where it runs its EMEA operations. Macquarie’s accounting division boasts strong specialisms in asset management and financial accounting.
29. Marcum LLP
Marcum is one of the top five US firms based on total revenue. The firm is headquartered in New York but also has a presence in Ireland, China and Grand Cayman, and specialises in valuation, litigation support, tax and business advisory.
Originally founded in France, Mazars now has an established global presence and is known for its strong sector expertise in aerospace, banking, media, real estate and insurance.
From its offices in London and the South East of England, Menzies has a separate wealth management division and has received awards for its work in restructuring and advisory services.
32. Mercer & Hole
Mercer & Hole’s origins can be traced back to 1905. This independent UK accountancy firm provides a wide-ranging service offering, ranging from valuations to corporate tax, auditing and trust management.
33. MHA MacIntyre Hudson
With almost 150 years of experience, this is one of the oldest firms in the UK. MHA MacIntyre Hudson provides services like cloud accounting, international business tax, and internal and external audits.
34. Moore Stephens
Headquartered in London, this global network of accounting firms employs over 30,000 people in approximately 600 offices all around the world. Its main area of expertise is multi-jurisdictional taxation for companies with an international presence.
35. Moss Adams
From its offices in Seattle and other US West Coast cities, Moss Adams has been providing clients in over 100 countries with assurance, tax and advisory services since 1913. The company employs more than 3,000 staff and is a member of the Praxity network.
In late 2018, Nexia became the world’s 9th-largest accounting network. It provides audit, advisory and tax services to public and private sector clients in approximately 115 countries.
Based in Los Angeles, NKSFB is among the fastest-growing accountancy firms in the US and brings over 30 years of experience in areas like auditing, forensic accounting, tax planning and compliance.
38. PKF International
PKF International is a network of accountancy firms that has members in five continents. In 2019, the company ranked among the 15 best accountancy firms in the world.
39. Plante Moran
Plante Moran employs over 3,000 specialists that provide support in areas like risk management, audits and outsourcing. Its services are available across the US, as well as in Mexico, Japan, China and India.
40. Postlethwaite & Netterville
Established in Louisiana during the 1940s, Postlethwaite & Netterville now employs over 600 professionals who provide a full suite of consulting, advisory and outsourced accountancy services.
41. Price Bailey
With offices in the UK, the Channel Islands and the eastern Caribbean, this award-winning firm brings specialist expertise in areas like corporate finance, tax and forensic accounting.
PwC has a presence in nearly 160 countries and, in 2019, was the world’s second-largest accountancy firm. Its client base mostly consists of Fortune 500 companies, and assurance, tax and advisory generate the highest percentage of income.
43. Rea & Associates
Rea & Associates is a long-standing US firm founded in 1938. It offers services in personal and business taxes, accounts management, financial audits and business advisory services.
44. RSM UK
From its London headquarters, award-winning RSM offers recovery, advisory and financial management services to a variety of industry sectors including charities, government, real estate and manufacturing.
45. Rubin Brown
A leading accountancy firm with multiple offices across the US and a strong track record in audits and compilation, taxation, and wealth advisory services. Rubin Brown serves clients in various industry sectors, ranging from technology to private equity.
46. Saffery Champness
This 164-year-old UK firm offers services in corporate finance, outsourcing, assurance and tax planning.
47. Seiler & Co.
Listed within the top 100 US firms for more than a decade, this Californian firm targets high-net-worth individuals and businesses, as well as companies in the not-for-profit sector.
48. Smith & Williamson
Founded in Glasgow in the late 19th century, this firm is now headquartered in London and has offices in the UK, Ireland and Jersey. A recent Accountancy Age survey places them among the 10 biggest accountancy practices in Britain.
49. Wilkins Kennedy
Established in 1882, Wilkins Kennedy is one of the UK’s oldest accountancy firms and provides assurance, advisory, outsourcing and tax services, mainly to business owners and charitable organisations.
With multiple offices across the US and India, Wipfli offers an extensive range of services from private wealth solutions to internal audits and compliance. In 2017, Wipfli was listed as one of the fastest-growing US accountancy practices.
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