All about <br> Fidag

All about

For more than 60 years, Fidag has been the company of choice in French-speaking Switzerland for accountancy, auditing, tax advice and consulting services. With a presence in 5 cantons in French-speaking Switzerland, we are always close by.

60 years
of expertise

Fidag is founded in Martigny in 1959 by André Devanthéry and opens its first branch in Sion in 1971. As the company develops, other branches open up one after another. The first branch outside the canton of Valais opens in Geneva in 2012

In 1999, Fidag is awarded ISO 9001 certification. In 2011, Fidag obtains final accreditation as an auditing company from the FAOA. One year later, in recognition of its social and environmental responsibilities, it obtains ISO 14001 certification and the labels Entreprise Citoyenne and Valais Excellence.

In 2016, Fidag acquires 100% of the share capital of Cabinet Fiduciaire et Fiscale, Dino Venezia SA in Lausanne. In 2019, it takes a 40% stake in Fidag Jura SA, created from the merger of Fiduciaire Juravenir SA and Transjurane Holding SA. At the beginning of 2020, Fidag launches Fidag Genève SA with two promising young professionals.

60 years <br>of expertise

Did you know?

The letters A and G of Fidag refer to the initials of the founders: A for André Devanthéry and G for Gérard Pillet.

The local approach pays off

Fidag is close to its clients, and its clients appreciate this. Today, it is rewarded by the trust of more than 4,000 companies and private individuals in all business segments:

  • Commerce, hotels, food and tourism
  • Transport
  • Buildings, civil engineering
  • Ski lifts
  • Industry, trades, arts and crafts
  • Pension funds
  • Temporary employment
  • Professional associations
  • Hospitals, clinics, CMS
  • Non-profit institutions, foundations, associations
  • Liberal professions, doctors, engineers, architects, lawyers, notaries, insurance agents
  • Municipalities and public authorities

Open to
the world

Open to  <br>the world

As a member of the GGI network (Geneva Group International), Fidag can rely on a network of auditing and law firms in more than 100 countries around the world – a major advantage for the many Swiss companies operating internationally.


At a time when climate issues are more pressing than ever, Fidag has long been committed to minimising the environmental impact of its activities. We are determined to conserve resources, reduce CO2 emissions and continuously improve our environmental policy.


The principles of our quality system define the approach we take towards our clients and sustainable development :

  • Continuously improving client satisfaction and responding to their demands.
  • Developing the skills of our employees.
  • Respecting legal and regulatory requirements.
  • Ensuring the profitability of the company and its sustainability.
  • Respecting occupational health and safety requirements.
  • Implementing continuous improvement actions.

Corporate philosophy. Our philosophy is to allow each employee to find their place according to their abilities and ambitions. The organisation is not hierarchical and allows each employee to blossom, develop and contribute to the growth of the company.

Loyal employees

With a low staff turnover rate, we can count on loyal and motivated employees. We also support part-time working. Today, one third of our staff work part time.

Responsible company

Fidag trains several apprentices and offers internship places to university and college students every year. Currently, it employs 8 apprentices/trainees. In addition, its employees include people receiving a disability pension or who are returning to work. Fidag also promotes the continuing education of its employees, who take part in EXPERTsuisse courses, among other things, and spend an average of 8,000 hours a year on continuing education.


Fidag's internal organisation is flexible and lean so that it can adapt quickly to market developments. We offer our employees a high degree of autonomy and responsibility.

The shareholders of Fidag are exclusively employees who work for the company. We give all company executives the opportunity to become shareholders in the company. The Board of Directors holds the majority of the share capital, the balance is held by the partners and authorised representatives. We currently have 29 shareholders.

All the directors are involved in the operational activities of the company, ensuring continued close contact with our clients.