You’ve come a long way already

You may need a helping hand

You require a strong performance

There’s no room for doubt in your mind

Your business doesn’t grow on its own

There are still more secrets to success

You shouldn’t be wasting time on billing

So let our turnkey solution work for you, from quotation to payment

You won’t invest in real estate unless you’re certain

So let us advise you on the best options covering law, tax, finance and property

Your fleet of vehicles can cost you less
So let us work out the best purchase options and optimise the cost price for you

So let us work out the best purchase options and optimise the cost price for you

Your development depends on investment

So let us carry out a range of simulations before you purchase equipment or machinery

You need to know where your profit comes from

So let us calculate your cost prices so you can adjust your sales prices

You need to know where your profit comes from

So let us calculate your cost prices so you can adjust your sales prices

Your expense claims shouldn’t give you headaches

So let us provide solutions for you and your staff

 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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Discover our services

View all our services

Statutory audit of books

Statutory audit of books

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Management corporate

Management corporate

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Financial engineering

Financial engineering

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Join Us

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.

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