History

Where we come from

From its humble beginning to the international group that it is today, Forvis Mazars Group has always remained true to its founder’s spirit and values of deep ethical commitment, responsibility and belief that technical excellence is the key to success.

It is based upon these values that the generations which inherited Forvis Mazars Group managed to grow the organisation, through the co-optation of new partners, in Europe and around the world, and through mergers with firms that share the same values, vision, and objectives.

That well known national firms like Weiser in the USA, Neville Russell in the UK, RBS in Germany or Paardekooper Hoffman in The Netherlands, elected to join the partnership is proof that the Forvis Mazars Group way has indeed been an attractive and effective model. Now operating via its integrated partnership in more than 100 countries and territories across the globe, with 40,000+ professionals, Forvis Mazars has become a fully-fledged global player.

Key milestones in our history

• 1945: Robert Mazars starts his accountancy practice near Rouen, France.
• 1965: The 'Cabinet Robert Mazars' limited liability company is created on 1 January.
• 1973: The company moves its audit team to Paris.
• 1975: Mazars opens its first offices outside of France, in Germany and Spain.
• 1985: Robert Mazars chooses to resign. Patrick de Cambourg becomes Chairman of Mazars.
• 1995: Mazars merges with Guérard Viala. The merger also marks the creation of the Mazars CARL partnership, which gives the partners in each of the two firms the chance to be fully associated as equals in the development of the new organisation.
• 1998: Mazars merges with Neville Russell, one of Britain’s leading independent firms.
• 1999: Mazars & Guérard choose the brandname 'Mazars'.
• 2000: Mazars merges with Paardekooper Hoffman in The Netherlands. With offices in most European countries, Mazars truly becomes an international organisation. Outside of Europe, Mazars is already present in Brazil, China and in several African countries.
• 2003-2007: Mazars speeds up its international development, with new offices in Eastern Europe, Asia Pacific, Latin America, Southern Africa and the Middle East.
• 2007: Mazars becomes one of the founding members of the Praxity Alliance, bringing together over 100 independent firms in 75 countries and territories.
• 2011: Philippe Castagnac becomes CEO & Chairman of the Group Executive Board.
• 2015: Mazars merges its German practice with Roever Broenner Susat (RBS) and celebrates the 20th anniversary of its international integrated partnership.
• 2016: Hervé Hélias becomes CEO & Chairman of the Group Executive Board.
• 2024: Mazars joins forces with US firm Forvis to form a new global network, Forvis Mazars.
• 2024: Hervé Hélias is named Chairman of the Forvis Mazars Group Governing Board and Chairman of the Forvis Mazars Global Network Board. Pascal Jauffret is appointed CEO of the Forvis Mazars Group Executive Committee.
• 2025: Forvis Mazars Group commemorates the 30th anniversary of its international partnership.
• Today: Forvis Mazars is a leading global provider of audit, tax and advisory services, with  40,000+ professionals across more than 100 countries and territories.