Diligentia, a firm of chartered accountants and statutory auditors at your service.
Are you a business owner, a company founder or buyer, a self-employed entrepreneur, a freelancer, or part of an association? We support you throughout your professional journey—and beyond.
With over 40 years of experience, Diligentia provides its clients with attentive service, close relationships, and expert guidance in the areas of accounting, taxation, legal affairs, social matters, and auditing.
Based in the Hauts-de-France region, Diligentia has offices close to you in Lille, Armentières, Hazebrouck, and Arras/Saint Laurent Blangy. A dedicated team is here to support you…

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Our clients are entrepreneurs and, as such, expect from us: responsiveness, agility, independence, and proximity… beyond, of course, the expert advice that forms the foundation of our profession.
Our firm is human-sized, fosters team spirit, and benefits from being part of Synerga, a nationwide group that provides us with the strengths of the largest firms: training, seminars, knowledge sharing, collaboration, tools, monitoring…
Because you are unique, come and enrich our team of talents: we regularly offer many opportunities.