# Top 30 accounting firms in the Loire-Atlantique department Tamtam tracks 39 accounting firms headquartered in the Loire-Atlantique department. This list ranks the 30 largest by number of employees on LinkedIn, led by COCERTO, Cerfrance Loire-Atlantique and Auditia. Their median headcount is 62. Half of them were founded in 1994 or later. The most common headquarters are Nantes (11), Saint-Herblain (6) and Carquefou (2). The Loire-Atlantique department hosts numerous accounting firms, predominantly mid-sized companies with a strong regional presence. These firms offer a broad spectrum of services, including accounting, audit, payroll, legal support, and strategic consulting. They cater to a diverse clientele, from local entrepreneurs and SMEs to individuals investing in real estate. Notable firms include COCERTO, which provides comprehensive accounting and digital tools; Cerfrance Loire-Atlantique, offering extensive consulting services; Auditia, an independent firm in the Grand Ouest region; and Amarris Groupe, which supports SMEs with digital and personalized solutions. Many firms, such as FICAMEX and eolis, emphasize close advisory services and client proximity. A significant number of these companies are headquartered in Nantes and its surrounding communes, indicating a cluster of expertise in the metropolitan area. 🇫🇷 Loire-Atlantique · 30 companies · Updated Nov 15, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [COCERTO](https://www.tamtam.ai/c/cocerto) (cocerto.fr)
Provides comprehensive accounting, audit, payroll, legal support, and digital tools to optimize and secure business operations with personalized service. | Accounting | 🇫🇷 Nantes | 200 | 1971 | | 2 | [Cerfrance Loire-Atlantique](https://www.tamtam.ai/c/cerfrance-loire-atlantique) (loire-atlantique.cerfrance.fr)
Provide accounting, strategic, fiscal, legal, social, HR, and IT consulting to support local entrepreneurs and business leaders' overall performance. | Business Consulting and Services | 🇫🇷 La Chapelle-sur-Erdre | 177 | 1958 | | 3 | [Auditia](https://www.tamtam.ai/c/auditia) (auditia.fr)
A well-established independent accounting firm in the Grand Ouest region with 6 locations, offering expertise in accounting, audit, and business transmission | Accounting | 🇫🇷 Saint-Nazaire | 148 | 1953 | | 4 | [Amarris Groupe](https://www.tamtam.ai/c/amarris-groupe) (amarris.fr)
Independent accounting firm offering comprehensive support to SMEs, from digital solutions to personalized services, including expertise in accounting, legal, payroll, and innovative financial solutions | Accounting | 🇫🇷 Saint-Herblain | 131 | 1999 | | 5 | [HLP Audit](https://www.tamtam.ai/c/hlp-audit) (hlp-audit.fr)
Accounting firm with 35 years experience, serving 2500 clients, focusing on team well-being, professional growth, and client service excellence. | Financial Services | 🇫🇷 Nantes | 130 | 1989 | | 6 | [FICAMEX](https://www.tamtam.ai/c/ficamex) (ficamex.fr)
A provider of close advisory services including accounting, social, legal expertise, and strategic consulting | Accounting | 🇫🇷 Chateaubriant | 117 | 1984 | | 7 | [Amarris Immo](https://www.tamtam.ai/c/amarris-immo) (amarris-immo.fr)
With nearly 15 years of experience, Amarris Immo is a leading accounting partner for individuals investing in rental real estate, offering tailored advice and solutions | Accounting | 🇫🇷 Saint-Herblain | 110 | 2013 | | 8 | [eolis](https://www.tamtam.ai/c/eolis) (cabinet-eolis.com)
Eolis is an accounting and auditing firm in Nantes, with 3 partners and 30 staff offering services in various sectors They prioritize proximity, training, and rigor | Accounting | 🇫🇷 Vertou | 103 | 1983 | | 9 | [CAEXIS](https://www.tamtam.ai/c/caexis) (caexis.fr)
Established in 1975, CAEXIS is an accounting firm with over 100 employees across 5 locations, offering various services to support businesses in reaching their goals | Accounting | 🇫🇷 Orvault | 102 | 1975 | | 10 | [ORECO](https://www.tamtam.ai/c/oreco) (cabinet-oreco.fr)
Established in 1978, ORECO is a team of 4 accountants and 45 staff members offering tailored advice to business owners in various stages of their company's lifecycle | Accounting | 🇫🇷 Treillières | 90 | 1978 | | 11 | [RSM Ouest](https://www.tamtam.ai/c/rsm-ouest) (rsm.global)
RSM offers tailored multidisciplinary services (audit, accounting, consulting) to SMEs, ETIs, and large companies in France and internationally | Accounting | 🇫🇷 Nantes | 72 | | | 12 | [Amarris Contact](https://www.tamtam.ai/c/amarris-contact) (amarris-contact.fr)
Expertise-comptable company offering digital solutions and personalized service for independent professionals and small to medium-sized business owners in multiple cities | Accounting | 🇫🇷 Saint-Herblain | 70 | 1999 | | 13 | [OZEO](https://www.tamtam.ai/c/ozeo) (ozeo.com)
Ozéo is a company formed by two accounting firms in Nantes, offering expert services in accounting, tax, and social management to support business growth | Accounting | 🇫🇷 Nantes | 67 | | | 14 | [Amarris Direct (ex-ECL Direct)](https://www.tamtam.ai/c/amarris-direct-ex-ecl-direct) (expert-comptable-tpe.fr)
Pioneering online accounting expertise in France, providing personalized advice and time-saving software to simplify accounting for over 3,500 entrepreneurs | Accounting | 🇫🇷 Saint-Herblain | 66 | 2007 | | 15 | [BAC AUDIT CONSEIL](https://www.tamtam.ai/c/bac-audit-conseil) (bacauditconseil.fr)
Provides expert accounting, auditing, and advisory services focused on strategic decision-making support and business transmission in multiple French cities. | Accounting | 🇫🇷 Nantes | 62 | 1994 | | 16 | [One Ace Expertise Comptable](https://www.tamtam.ai/c/one-ace-expertise-comptable) (one-ace.fr)
Accounting firm with over 80 professionals providing personalized advisory and accounting services to artisans, small businesses, and professionals in Loire-Atlantique. | Accounting | 🇫🇷 Nantes | 58 | 1984 | | 17 | [Cabinet Vilaine et Associés (CVA)](https://www.tamtam.ai/c/cabinet-vilaine-et-associes-cva) (cvaexperts.fr)
An accounting firm in Pays-de-la-Loire, offering services such as advisory, audit, payroll, and expertise for clients in various industries | Accounting | 🇫🇷 Saint-Herblain | 50 | 1971 | | 18 | [Efi-Sciences](https://www.tamtam.ai/c/efi-sciences) (efisciences.fr)
Efi-Sciences is a team of 30 experienced professionals dedicated to helping manage businesses efficiently, offering personalized tools and a warm approach to accounting | Accounting | 🇫🇷 Saint-Herblain | 42 | 2009 | | 19 | [Consultim Groupe](https://www.tamtam.ai/c/consultim-groupe) (consultim.com)
Provides comprehensive real estate investment platforms for wealth management professionals, including managed properties, crowdfunding, asset management, accounting, and property brokerage services. | Real Estate | 🇫🇷 Vertou | 40 | 1995 | | 20 | [CAPEXIA France](https://www.tamtam.ai/c/capexia-france) (capexia.fr)
Capexia is an accounting firm offering expertise in financial, legal, and tax audit, accounting services, payroll outsourcing, with a modern management tool for SMEs | Accounting | 🇫🇷 Carquefou | 35 | 2005 | | 21 | [ADVELIA EXPERTISE](https://www.tamtam.ai/c/advelia-expertise) (advelia.com)
ADVELIA is an accounting firm located in Nantes, specializing in expertise and financial services | Accounting | 🇫🇷 Nantes | 32 | 2008 | | 22 | [LBA Walter France](https://www.tamtam.ai/c/lba-walter-france) (lba-walterfrance.com)
Provides accounting, audit, human resources, and social services with a focus on teamwork, employee well-being, and client success. | Accounting | 🇫🇷 Carquefou | 31 | 1970 | | 23 | [ARCEIS](https://www.tamtam.ai/c/arceis) (arceis.fr)
A small-sized accounting firm providing personalized advice in accounting, tax, legal, and payroll services, supporting businesses with over 10 years of experience | Accounting | 🇫🇷 Haute Goulaine | 30 | 2007 | | 24 | [DMP Atlantique](https://www.tamtam.ai/c/dmp-atlantique) (dmpatlantique.com)
specialized accounting firm supporting pharmacies and various businesses with accounting, tax, payroll, legal, and management control services | Accounting | 🇫🇷 Nantes | 28 | | | 25 | [Françoise Fradin & Associés](https://www.tamtam.ai/c/francoise-fradin-and-associes) (ozeo.com)
Providing accounting, social, and fiscal expertise with personalized advice and technical solutions to improve business profitability and decision-making. | Accounting | 🇫🇷 Nantes | 17 | | | 26 | [ÉKALIS](https://www.tamtam.ai/c/ekalis) (ekalis.fr)
Accounting firm providing personalized advice, supporting project development locally and internationally through alliances, ensuring secure business growth and trusted relationships. | Accounting | 🇫🇷 Treillières | 16 | 1998 | | 27 | [Expèréo \| Cabinet d'expertise comptable](https://www.tamtam.ai/c/expereo-cabinet-d-expertise-comptable) (cabinet-expereo.com)
Expèréo is an accounting and project advisory firm in Nantes that prioritizes expertise and human connection, providing tailored services to businesses and associations | Accounting | 🇫🇷 Rezé | 14 | 2009 | | 28 | [KAPSENS](https://www.tamtam.ai/c/kapsens) (kapsens.com)
A consulting and accounting firm in Paris and Nantes, providing personalized support to business owners in managing their projects and legal, fiscal, and digital environments | Accounting | 🇫🇷 Saint-Sébastien-sur-Loire | 14 | 2011 | | 29 | [AGORA EXPERTS](https://www.tamtam.ai/c/agora-experts) (cabinet-dg.fr)
AGORA Experts is an accounting and auditing firm located in Nantes, La Roche-sur-Yon, and Rezé, serving a variety of industries and organizations | Accounting | 🇫🇷 Nantes | 14 | | | 30 | [FIGURA AUDIT & CONSEILS](https://www.tamtam.ai/c/figura-audit-and-conseils) (figura-expert.fr)
FIGURA is an independent accounting and auditing firm in Nantes and Ancenis, with 20 employees serving over 500 clients including SMEs, entrepreneurs, and freelancers for over 35 years | Accounting | 🇫🇷 Nantes | 12 | 1987 | ## How this list is built 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 15, 2026. ## More company lists in the Loire-Atlantique department - [The largest companies in the Loire-Atlantique department](https://www.tamtam.ai/l/largest-companies-loire-atlantique) (2,044) - [Companies with in-house R&D in the Loire-Atlantique department](https://www.tamtam.ai/l/r-and-d-companies-loire-atlantique) (207) - [Retail chains in the Loire-Atlantique department](https://www.tamtam.ai/l/retail-chains-loire-atlantique) (162) - [Multinational companies in the Loire-Atlantique department](https://www.tamtam.ai/l/multinational-companies-loire-atlantique) (159) - [Professional services firms in the Loire-Atlantique department](https://www.tamtam.ai/l/professional-services-firms-loire-atlantique) (158) - [Software Development companies in the Loire-Atlantique department](https://www.tamtam.ai/l/software-development-companies-loire-atlantique) (137) - [SaaS companies in the Loire-Atlantique department](https://www.tamtam.ai/l/saas-companies-loire-atlantique) (135) - [IT services companies in the Loire-Atlantique department](https://www.tamtam.ai/l/it-services-companies-loire-atlantique) (130) - [Manufacturers in the Loire-Atlantique department](https://www.tamtam.ai/l/manufacturers-loire-atlantique) (125) - [IT Services and IT Consulting companies in the Loire-Atlantique department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-loire-atlantique) (110) - [Consulting firms in the Loire-Atlantique department](https://www.tamtam.ai/l/consulting-firms-loire-atlantique) (94) - [Distributors and wholesalers in the Loire-Atlantique department](https://www.tamtam.ai/l/distributors-and-wholesalers-loire-atlantique) (94) - [Hardware manufacturers in the Loire-Atlantique department](https://www.tamtam.ai/l/hardware-companies-loire-atlantique) (86) - [Business Consulting and Services companies in the Loire-Atlantique department](https://www.tamtam.ai/l/business-consulting-and-services-companies-loire-atlantique) (83) - [Public sector organisations in the Loire-Atlantique department](https://www.tamtam.ai/l/public-sector-organisations-loire-atlantique) (80) - [Family-owned companies in the Loire-Atlantique department](https://www.tamtam.ai/l/family-owned-companies-loire-atlantique) (71) - [Education providers in the Loire-Atlantique department](https://www.tamtam.ai/l/education-companies-loire-atlantique) (68) - [Real Estate companies in the Loire-Atlantique department](https://www.tamtam.ai/l/real-estate-companies-loire-atlantique) (67) - [Financial services firms in the Loire-Atlantique department](https://www.tamtam.ai/l/financial-services-firms-loire-atlantique) (65) - [Law Practice companies in the Loire-Atlantique department](https://www.tamtam.ai/l/law-practice-companies-loire-atlantique) (62) - [Retail companies in the Loire-Atlantique department](https://www.tamtam.ai/l/retail-companies-loire-atlantique) (61) - [Subscription businesses in the Loire-Atlantique department](https://www.tamtam.ai/l/subscription-businesses-loire-atlantique) (61) - [Critical infrastructure operators in the Loire-Atlantique department](https://www.tamtam.ai/l/critical-infrastructure-operators-loire-atlantique) (58) - [Events Services companies in the Loire-Atlantique department](https://www.tamtam.ai/l/events-services-companies-loire-atlantique) (58) ## The same list elsewhere in France - [Accounting firms in France](https://www.tamtam.ai/l/accounting-firms-france) (1,879) - [Accounting firms in Île-de-France](https://www.tamtam.ai/l/accounting-firms-ile-de-france) (557) - [Accounting firms in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/accounting-firms-auvergne-rhone-alpes) (247) - [Accounting firms in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/accounting-firms-provence-alpes-cote-dazur) (190) - [Accounting firms in Occitanie](https://www.tamtam.ai/l/accounting-firms-occitanie) (173) - [Accounting firms in Nouvelle-Aquitaine](https://www.tamtam.ai/l/accounting-firms-nouvelle-aquitaine) (129) - [Accounting firms in Grand Est](https://www.tamtam.ai/l/accounting-firms-grand-est) (126) - [Accounting firms in the Rhône department](https://www.tamtam.ai/l/accounting-firms-rhone) (113) - [Accounting firms in Hauts-de-France](https://www.tamtam.ai/l/accounting-firms-hauts-de-france) (97) - [Accounting firms in the Bouches-du-Rhône department](https://www.tamtam.ai/l/accounting-firms-bouches-du-rhone) (93) - [Accounting firms in Pays de la Loire](https://www.tamtam.ai/l/accounting-firms-pays-de-la-loire) (90) - [Accounting firms in Brittany](https://www.tamtam.ai/l/accounting-firms-brittany) (81) - [Accounting firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/accounting-firms-hauts-de-seine) (67) - [Accounting firms in the Haute-Garonne department](https://www.tamtam.ai/l/accounting-firms-haute-garonne) (58) - [Accounting firms in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/accounting-firms-bourgogne-franche-comte) (57) - [Accounting firms in the Nord department](https://www.tamtam.ai/l/accounting-firms-nord) (57) - [Accounting firms in Normandy](https://www.tamtam.ai/l/accounting-firms-normandy) (55) - [Accounting firms in the Gironde department](https://www.tamtam.ai/l/accounting-firms-gironde) (49) - [Accounting firms in the Hérault department](https://www.tamtam.ai/l/accounting-firms-herault) (48) - [Accounting firms in the Alpes-Maritimes department](https://www.tamtam.ai/l/accounting-firms-alpes-maritimes) (39) - [Accounting firms in Paris](https://www.tamtam.ai/l/accounting-firms-paris) (357) - [Accounting firms in Marseille](https://www.tamtam.ai/l/accounting-firms-marseille) (62) - [Accounting firms in Lyon](https://www.tamtam.ai/l/accounting-firms-lyon) (57) - [Accounting firms in Toulouse](https://www.tamtam.ai/l/accounting-firms-toulouse) (43) ## The same list elsewhere - [Accounting firms in the world](https://www.tamtam.ai/l/accounting-firms-in-the-world) (3,737) - [Accounting firms in Europe](https://www.tamtam.ai/l/accounting-firms-in-europe) (2,855) --- Source: https://www.tamtam.ai/l/accounting-firms-loire-atlantique