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TypeSociété cooperative à responsabilité limitée
IndustryProfessional services
Founded1945; 78 years ago (1945)
Rouen, France
HeadquartersParis, France
Key people
Hervé Hélias (chairman and CEO)
ServicesAudit, Chartered accountant, Consulting, Taxation, Corporate finance, Financial advisory, Legal
RevenueIncrease€2.45 billion (2022)
Number of employees
47,000 (2022)

Mazars is an internationally integrated partnership, specialising in audit, accounting and consulting group employing more than 47,000[1] professionals in more than 95 countries through member firms.[2] 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.

Worldwide turnover for the integrated partnership for the fiscal year ending August 2014 was 1.081 billion euros.[3] Mazars operates as a single entity as a fully integrated partnership. Mazars publicizes its consolidated financial accounts, a move it claims is unusual for private audit and advisory firms.[4]


The original Mazars firm was formed in Rouen, Normandy in France in 1945 by Robert Mazars. He would serve as chief executive officer until 1983, when Patrick de Cambourg was appointed the position. de Cambourg began internationalizing the local firm, which counted 33 employees in 1977.[5] From 2011 to 2016, Philippe Castagnac served as chief executive officer.[6][7] He was succeeded by Hervé Hélias,[7] who currently holds the position.[8]

In 2016, Mazars announces the integration of the Chinese firm ZhongShen ZhongHuan into its partnership. As of January 1, the Mazars Group partnership extends to 77 countries and 17,000 employees work for Mazars. In 2017, Mazars acquires Zettafox, a French prescriptive data analytics startup, and announces the creation of its Lab to accelerate the internal transformation of its businesses and enrich its offerings.[9]

In 2020, Mazars will have 24,400 professionals within the Mazars integrated partnership, plus 16,000 professionals via the Mazars North America Alliance; and will be present in 91 countries.


  • Australia

Mazars integrated Australian audit and advisory firm Duncan Dovico on 1 January 2016.[10] Mazars announced the acquisition of Australian-based financial modelling and training provider Corality Financial Group on 13 July 2016[11] to form the new team Global Infrastructure Finance. From 1 January 2019,[12] the Brisbane firm Hanrick Curran and the Melbourne firm Cummings Flavel McCormack both joined the global Mazars partnership, providing the Firm with an East-Coast presence in Australia.

  • Brazil

As of 2002 Mazars integrated "Cabrera".[citation needed] Mazars Brazil has more than 800 professionals across 7 offices in the cities of São Paulo, Sorocaba, Barueri, Campinas, Ribeirão Preto, Rio de Janeiro and Curitiba, providing services to small, medium and large businesses.[citation needed]

  • China

In January 2016, Mazars and Chinese firm ZhongShen ZhongHuan announced their merger, adding a further 1,800 professionals to Mazars globally, including 83 partners, from 15 offices across mainland China.[13]

  • Czech Republic

Mazars Czech Republic was founded in 1995 and employs around 180 professionals.[14] Mazars is, by domestic sales, the 7th biggest audit firm on the Czech market.[15] In 2015, the managing partner of Mazars Czech Republic was Milan Prokopius.

  • France

Mazars merged with accounting firm Guérard Viala to form Mazars & Guérard in 1995.[citation needed]

  • Ireland

In 1987, Rawlison Hunter joined forces with Mazars.[16] Since then, Mazars has joined and merged with other firms in Ireland, and has offices in Dublin, Galway and Limerick with 30 Partners and over 500 professionals.[17]

  • Germany

In April 2015, Mazars and RBS RoeverBroennerSusat announced their merger which united about 1,000 professionals, including 68 partners and €110 million of turnover in the German market. As of 2015, Roever Broenner Susat Mazars had twelve offices in German metropolitan area.[18][19]

  • Greece

Mazars in Greece became fully integrated to the Mazars Group as of 1 September 2012 and is now operating under the Mazars brand with two offices in Athens and Thessaloniki and over 120 professionals.[citation needed]

  • India

Mazars is present in India since early 2000 through its network firm Kalyaniwalla and Mistry and S. N Dhawan & Co.[citation needed]

  • Malaysia

In 1986, Hew & Co (established in 1955) and Tan Toh Hua & Partners (established in 1958) had merged to form Hew & Tan. In the year 1999, Hew & Tan had changed their name to Moores Rowland as a rebranding exercise. On 1 September 2008, the Kuala Lumpur office of Moores Rowland merged with the global integrated structure of Mazars. To implement the merger, a new firm, Mazars (AF 001954), was registered to assume all existing mandates and statutory audit appointments of the Kuala Lumpur office of Moores Rowland.[citation needed]

  • Netherlands

As of 2000, Mazars integrated "Paardekooper & Hoffman" (of the Netherlands), which employed more than 1000 people. In the Dutch audit market, Mazars ranks as the sixth-largest firm and contributes more than 15% of the total global turnover.[citation needed]

Jan Paardekooper founded Paardekooper & Hoffman in 1927. The firm worked with large clients involved in the maritime and harbour businesses of Rotterdam.[citation needed]

  • Pakistan

In April, 2010, Mazars integrated BearingPoint into their business in Pakistan, thus adding advisory services in management and technology for sectors such as microfinance, financial services and within the public sector.[20]

  • Poland

Mazars has been operating in Poland since 1992, currently employs over 300 specialists in Warsaw and Krakow and serves more than 800 Polish and international companies of various sizes.[21]

  • Qatar

Following a prior cooperation initiated in 2008 with Ahmed Tawfik & Co. CPA, an accounting and auditing services firm in Qatar which traces its roots back to 1976, Mazars entered into an international partnership in September 2011, becoming Mazars Ahmed Tawfik & Co. CPA.[22]

Mazars Ahmed Tawfik & Co. CPA[22] specializes in audit, accounting, tax and advisory services and has 30 professionals in its office.[citation needed]

  • Russia and CIS

Mazars has been present in Russia since 1995 and is an international player in the Russian market of audit and consulting services. Mazars established its presence in Russia in 1995. Today, its offices in Moscow, Saint-Petersburg and Togliatti employ over 350 professionals. The firm also has offices in Almaty (Kazakhstan), Bishkek (Kyrgyzstan) and Tashkent (Uzbekistan). The client portfolio of Mazars in Russia includes more than 600 companies.[23]

  • Singapore

Mazars in Singapore has been present in Singapore since 1979 (as part of Moores Rowland International network of firms) and became Mazars LLP in 2009.[citation needed]

  • South Africa

Mazars is one of the oldest audit firms in South Africa with a presence there since the early 1950s. It has over 1,000 staff, 73 Partners and 25 Directors operating out of 10 offices within South Africa.[24]

  • Thailand

In 2007, continuing its Asian expansion, Mazars merged with the Double Impact Group in Thailand.

Since then, Mazars Thailand[25] has grown to become the 6th-largest international professional services firm in Thailand, with over 300 consultants and 13 partners.[citation needed]

  • Turkey

Mazars Denge was founded by two partners as Denge Denetim YMM A.S. in 1977.[citation needed].

  • Uganda

Mazars integrated Ugandan audit and advisory firm BRJ Partners on 1 January 2018. Mazars announced the integration with BRJ partners in the annual partners meeting.[citation needed]

  • United Kingdom

On 1 September 1998, Mazars & Guerard merged with the British accountancy firm Neville Russell and traded, in the UK, for a number of years as "Mazars Neville Russell". In 2002, "Mazars Neville Russell", as well as its counterpart firms across Europe, changed the name to become simply Mazars. Mazars currently employs 2,600 people in 15 offices[26][27] in the UK; turnover is around €234m.[28]

In April 2007, Mazars merged with the London office of MRI Moores Rowland which created a firm with turnover in the UK exceeding £90million.[29] Mazars, prior to the merger, was listed as the 14th-largest accountancy firm in the UK with about £65 million fee income;[30] following the merger and with the merger between Grant Thornton and RSM Robson Rhodes in the summer of 2007, Mazars was listed as 12th, with an estimated fee income of £90.3m.[citation needed] Neville Russell was founded in 1900 by Charles Neville Russell to work principally with the insurance sector of the economy. Neville Russell developed a reputation in London of being specialists in this area.[citation needed]

  • United States

In April 2010, Mazars and Weiser, an audit and advisory firm with a strong presence in the northeastern region of the US, announced their merger, incorporating 74 Weiser partners into Mazars' international integrated partnership.[31]

  • Vietnam

Mazars has been established in Vietnam since 1994 and employs around 160.[32] Mazars Vietnam operates through its offices in Hanoi and Ho Chi Minh City. The managing partner of Mazars in Vietnam is Jean-Marc Deschamps,[33] based in Ho Chi Minh City.

  • Zimbabwe

In 2023, Mazars integrated with a local Zimbabwean audit and advisory firm (KLM Chartered Accountants) to form Mazars in Zimbabwe.[34]

Notable clients[edit]

Since April 2019, US President Donald Trump's attorneys have had an ongoing controversy with a House Oversight and Reform Committee's request for some of the President's financial records which may be in the possession of Mazars USA.[35] On 25 February 2021, the House Oversight Committee in the 117th Congress, reissued the subpoena to Mazars USA for the same documents it had previously sought.[36]

In 2022, following the collapse of FTX, Mazars was engaged by Binance to perform an audit and report on its assets held in reserve.[37] This was later halted following $6 billion of outflows from Binance in December 2022, before Mazars decided to suspend all work with its cryptocurrency-affiliated customers.[38]


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  2. ^ "Mazars at a glance - Mazars - United Kingdom". Archived from the original on 24 August 2012.
  3. ^ "Creating Shared Value: Mazars Group publishes its 2014-2015 Annual Report". Retrieved 12 July 2016.
  4. ^ "Transformation: Mazars Group publishes its 2016-2017 Annual Report - Mazars Group".
  5. ^ Mazars. "Our roots".
  6. ^ "Philippe Castagnac (Mazars)". Les Echos (in French). 10 April 2013. Retrieved 13 December 2022.
  7. ^ a b "Mazars CEO Helias adds chairman role, replacing Castagnac". Reuters. 17 December 2018. Retrieved 13 December 2022.
  8. ^ Mazars. "Hervé Helias - Mazars - Switzerland". Retrieved 13 December 2022.
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  10. ^ "Mazars Australia". Mazars Australia. 1 January 2016.
  11. ^ "Corality acquisition". Corality Financial Group. 13 July 2016.
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  14. ^ "Domovská stránka". Mazars Česká republika. Retrieved 3 April 2015.
  15. ^ Horáček, Jakub (April 2015). "Ekonom". No. 14. Economia.
  16. ^ Mazars. "History". Retrieved 31 May 2018.
  17. ^ Mazars. "Mazars, a different player in auditing, accounting, tax and advisory services in Ireland". Retrieved 31 May 2018.
  18. ^ "Two become one". Retrieved 12 July 2016.
  19. ^ "Wirtschaftsprüferfusion von Röver Brönner Suasat und Mazars - manager magazin". Retrieved 12 July 2016.
  20. ^ "Mazars integrates BearingPoint Pakistan". Archived from the original on 11 March 2012. Retrieved 12 July 2016.
  21. ^ Mazars. "Mazars in Poland: Growing together - Mazars - Poland". Retrieved 10 June 2021.
  22. ^ a b "Audit, Accounting, Tax, Financial Advisory Services - Doha, Qatar". MAZARS AHMED TAWFIK & CO. CPA.
  23. ^ "Список крупнейших российских аудиторских организаций (субъектов аудиторской деятельности) по итогам 2018 года".
  24. ^ "Mazars South Africa". Retrieved 15 November 2021.
  25. ^ Mazars. "Mazars - Thailand".
  26. ^ "Mazars, a different player in auditing, accounting, tax and advisory services in the United Kingdom". Retrieved 12 July 2016.
  27. ^ "Detail of UK offices". Archived from the original on 1 January 2007.
  28. ^ "Mazars LLP doc".
  29. ^ Announcement of merger with MRI Moores Rowland Archived 28 September 2007 at the Wayback Machine/
  30. ^ "Top50 +50 firms face ICAEW audit fines - Accountancy Age". 15 August 2012. Retrieved 12 July 2016.
  31. ^ McKenna, Francine. "Bienvenue! French Audit Firm Mazars Arrives in U.S." Forbes. Retrieved 5 August 2016.
  32. ^ "Home". Retrieved 12 July 2016.
  33. ^
  34. ^ {{cite web}}: Missing or empty |title= (help)
  35. ^ Andrew Desiderio (15 April 2019). "Trump attorneys warn accounting firm not to hand over financial records; The president's attorneys urged Mazars USA to not comply with an imminent Democratic subpoena". Retrieved 19 July 2020.
  36. ^ Wolfe, Jan (3 March 2021). "U.S. House panel reissues subpoena for Trump's tax records". Reuters. Retrieved 5 March 2021.
  37. ^ Muir, Martha; Oliver, Joshua; Foley, Stephen; Chipolina, Scott; O'Dwyer, Michael (16 December 2022). "Financial Times".
  38. ^ "CNBC". CNBC.