The professional services firms in Charente-Maritime are primarily focused on accounting and financial services. Companies like CGO Expertise comptable & Conseil, Exco Valliance, and FIMECO Walter France offer comprehensive accounting, auditing, and consulting services. NOT'ATLANTIQUE provides legal services, while ID Groupe specializes in wealth management.
The firms listed largely comprise established mid-sized companies, with many founded before 2000. While accounting and financial services are dominant, there is also a presence of IT services through companies like KEPIoT and EUROCAP, and human resources with GRH & AUDIT. Most of these firms are headquartered in key urban centers like La Rochelle, Saintes, and Fontcouverte.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
CGO Expertise comptable & Conseilgroupecgo.fr
Providing accounting, business consulting, tax, social, payroll, legal, wealth management, and agro-environmental services for entrepreneurs across the southwestern region for over forty years. |
256 | |||
| 2 |
Exco Vallianceexco.fr
Accounting, auditing, and consulting services supporting entrepreneurial initiatives, business development, and management optimization across France, Poland, and Portugal through an international independent network. |
221 | |||
| 3 |
FIMECO Walter Francefimeco-walter-allinial.com
A multidisciplinary group providing business services including accounting, auditing, consulting, social, legal, financial management, and training for entrepreneurs and businesses |
147 | |||
| 4 |
NOT'ATLANTIQUEnotatlantique.fr
A major player in the notarial profession in Charente-Maritime, offering expertise in general notarial law, complex real estate, family estate planning, business law, and rural law |
92 | |||
| 5 |
ID Groupeidgroupe.fr
The company provides comprehensive services for personal and professional wealth management, including insurance, real estate, retirement planning, and financial investments |
69 | |||
| 6 |
Groupe Excel La Rochellegroupe-excel-larochelle.fr
Accounting, auditing, payroll, and consulting services for entrepreneurs, companies, and associations with a dedicated, experienced team. |
38 | |||
| 7 |
GRH & AUDIT - Externalisation Paiegrhaudit.com
Consulting firm providing payroll outsourcing, payroll management, and tailored solutions for businesses and accountants across France and internationally. |
36 | |||
| 8 |
ABP Architectesabp-architectes.com
Architecture and urban planning agency with design services, headquartered in La Rochelle and Paris, offering comprehensive architectural solutions |
29 | |||
| 9 |
KEPIoT - INDUSTRY 4.0kepfrance.fr
Specializing in Control / Command since 1993, KEPIoT enhances digital transformation with agile methods, product solutions, and Industry 40 services for global manufacturing units |
26 | |||
| 10 |
FGM Internationalfgm-agriculture.com
Design, development, and operational management of large-scale farming projects with strategic advice, site assessment, feasibility studies, and farm management services. |
25 | |||
| 11 |
Groupe Fiduroccrowe.com
A multi-site accounting firm founded in 1958, providing expertise, auditing, and advisory services in La Rochelle, Surgères, and Férrières to clients, with around 40 collaborators |
25 | |||
| 12 |
EUROCAPeurocap.pro
Since 1999, EUROCAP advises and supports professionals in their Digital Transformation (IoT, interconnection, audit, solutions) to stay competitive in the market |
19 | |||
| 13 |
Cabinet Guillemet - AGT - TERRAMAPagt-geometre.com
A geomatics firm offering land surveying, land development, topographic mapping, utility detection, urban planning services with over 35 years of experience |
17 | |||
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| 14 |
Parfum Marketingparfum-marketing.fr
Support French SMEs in cosmetic and food sectors through product innovation stages, from concept to market launch with tailored marketing and technical expertise. |
14 | |||
| 15 |
Blue Conseil Expertiseblue-conseil.com
Financial consulting and support for SME leaders, focusing on strategy, management, compliance, accounting, and business transmission in digital and hospitality sectors. |
13 | |||
| 16 |
ACEC GECO ZENITHacecgecozenith.fr
ACEC GECO ZENITH is a consulting, accounting, and auditing firm offering services in La Rochelle, Limoges, and Guéret, specializing in various sectors of the economy |
13 | |||
| 17 |
Objectif Entreprises et Commercesobjectifentreprisesetcommerces.fr
Specialist in selling businesses and commercial assets since 2002, aiding in the transfer of funds and management of transactions |
10 | |||
| 18 |
Office Notarial du Bois d'Amour à SAINTES (17100)office-notarial-du-boisdamour-saintes.notaires.fr
A notarial office in Saintes, France, offering services in real estate law, family law, estate planning, business law, and real estate negotiation |
5 | |||
| 19 |
Apave - Agence de La Rochelleapave.com
A local agency in La Rochelle providing inspection, technical assistance, construction services, testing, training, and consulting to various clients |
5 | |||
| 20 |
E, LITIS
Legal firm in Saintes and Royan, with six partners and four employees, providing legal advice and representation in Charente-Maritime and nationally |
5 | |||
| 21 |
2L concept2lconcept.fr
Specializing in event architecture, planning, space design, technical direction, and logistics for a seamless event experience |
5 | |||
| 22 |
ATLANTIC HUISSIERS DUFAURE CASTEX KALIACT 17kaliact17.fr
The company serves as a Court Officer and Mediator in the POITIERS Court of Appeal, handling legal activities nationwide |
4 | |||
| 23 |
PROJET COMMERCEprojetcommerce.fr
A specialized agency in commercial real estate and business sales in Charente Maritime Providing comprehensive services including financing, legal support, and local business connections |
3 | |||
| 24 |
NIMOS Designnimosdesign.fr
Industrial designers for brand value and company values, innovation support, project integration from concept to realization, product coherence. |
3 | |||
| 25 |
Groupe Améogroupeameo.com
A special holding company specializing in designing and building commercial spaces Provides Design & Build services for hotels, restaurants, and shops |
3 | |||
| 26 |
Karêm
KAREM is a consulting firm supporting business leaders in decision-making, specializing in management and organization for various industries and company sizes |
1 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
More company lists in the Charente-Maritime department
- The largest companies in the Charente-Maritime department 444
- Retail chains in the Charente-Maritime department 57
- Companies with in-house R&D in the Charente-Maritime department 53
- Manufacturers in the Charente-Maritime department 39
- Multinational companies in the Charente-Maritime department 36
- Public sector organisations in the Charente-Maritime department 33
The same list elsewhere in France
- Professional services firms in France 6,611
- Professional services firms in Île-de-France 3,377
- Professional services firms in Auvergne-Rhône-Alpes 711
- Professional services firms in the Hauts-de-Seine department 629
- Professional services firms in Provence-Alpes-Côte d'Azur 433
- Professional services firms in the Rhône department 400
- Professional services firms in Occitanie 399
- Professional services firms in Grand Est 316
- Professional services firms in Nouvelle-Aquitaine 308
- Professional services firms in Hauts-de-France 260
- Professional services firms in Pays de la Loire 254
- Professional services firms in the Bouches-du-Rhône department 249
- Professional services firms in the Haute-Garonne department 208
- Professional services firms in the Nord department 178
- Professional services firms in Brittany 167
- Professional services firms in the Loire-Atlantique department 158
- Professional services firms in the Gironde department 151
- Professional services firms in Normandy 114
- Professional services firms in the Yvelines department 108
- Professional services firms in Paris 2,241
- Professional services firms in Lyon 265
- Professional services firms in Toulouse 139
- Professional services firms in Marseille 123
- Professional services firms in Boulogne-Billancourt 102