What ADECIA Experts-Comptables does

ADECIA Experts-Comptables, legally registered as ADECIA – CABINET LORIEAU (SIRET 31308895700045), is a privately held French accounting and multidisciplinary business advisory firm founded in 1956 and headquartered at 5 Rue Paul Emile Victor, 85000 La Roche-sur-Yon. The firm operates a 21-agency network spanning the Grand Ouest region of western France (Angers, Nantes EST/NORD/SUD, La Rochelle, Niort, Poitiers, Saint-Nazaire, Cholet, Challans, Les Herbiers, Les Sables-d'Olonne, Luçon, Montaigu, Royan, Saint-Gilles-Croix-de-Vie, Saint-Jean-de-Monts, Saintes) and Paris, employing 470 collaborators including 30 experts-comptables and commissaires aux comptes. It serves approximately 7,500 clients across very small to large enterprises and private individuals.

Name

ADECIA Experts-Comptables

Legal name

ADECIA – CABINET LORIEAU

Website

https://adecia.fr

Company type

Private

Founded year

1956

Operating status

Operating

Headcount range

101–250 employees

Short description

ADECIA Experts-Comptables is a 65-year-old French accounting and multidisciplinary advisory firm serving 7,500 clients with 470 staff across 21 agencies in the Grand Ouest and Paris, covering accounting, payroll, audit, legal, consulting, training, and Family Officer wealth services.

Ownership category

akta.pro rank

Headquarters

HQ city

La Roche-sur-yon

HQ country

France

HQ region

Europe

Offices21 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Others

Revenue model

1. Expertise Comptable: Traditional accounting and bookkeeping services provided by expert accountants, including account management, tax filing, and financial reporting.
2. Social / Payroll Services: Payroll processing, HR management, and social compliance services. The Social team serves over 2,000 companies and produces approximately 14,000 pay slips per month.
3. Formation Professionnelle: Professional training academy offering over 50 thematic training courses in accounting, tax, IT, and communication.
4. Consulting & Strategy: Business strategy consulting including RSE, digitalization, transition management, process optimization, and family officer services.
5. Audit & Commissariat aux Comptes: Legal audit and statutory audit services by commissaires aux comptes to certify company accounts.
6. Conseil Juridique: Legal advisory services covering business law and corporate legal formalities.
7. Gestion de Patrimoine (Family Officer): Patrimonial management including estate planning, wealth management, tax planning, and administrative management for business leaders.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

ADECIA is a French accounting and business advisory firm that provides expert-comptable services, payroll/HR management, statutory audit (commissariat aux comptes), legal counsel, strategic consulting, professional training, and Family Officer wealth management. The firm operates across 21 agencies in the Grand Ouest region and Paris, serving approximately 7,500 clients with 470 collaborators including 30 experts and statutory auditors.

Product overview

ADECIA is an accounting and business advisory firm providing comprehensive professional services across accounting, HR/payroll, professional training, strategic consulting, legal counsel, audit, and wealth management. The firm operates through a multi-brand structure including its core accounting services, the ADECIA IMMO real estate subsidiary, and recommends partner solutions like Pennylane for business management. The company supports clients through 21 agencies across Western France and Paris, serving approximately 7,500 clients with a team of around 470 professionals including accountants, tax specialists, lawyers, payroll advisors, and statutory auditors. ADECIA also offers specialized services in electronic invoicing preparation and Family Officer wealth management services.

Differentiator

Problem solved

Functional benefit

Products and services

• Comptabilité (Accounting Services) Full accounting services including bookkeeping, tax management, and financial steering tools, delivered by expert accountants with a multidisciplinary approach for business leaders and companies across all sizes.
• Social (HR & Payroll) Social management services covering payroll processing, labor law, recruitment, HR development, and social protection for businesses. The Social team serves over 2,000 companies and produces approximately 14,000 pay slips per month.
• Formation Professionnelle (Professional Training Academy) Professional training academy offering over 50 thematic courses for business management including accounting, taxation, IT, and communication.
• Conseil en Stratégie (Strategic Consulting) Strategic consulting services including RSE (CSR), digitalization, transition management, process optimization, and Family Officer wealth management services for business leaders.
• Conseil Juridique (Legal Services) Legal counsel specializing in business and company law, covering legal secretarial services and comprehensive legal support throughout the business lifecycle.
• Audit & Commissariat aux Comptes Legal audit and company valuation services by experienced statutory auditors who certify financial statements for transparency and reliability.
• Family Officer Services Wealth management and estate planning services including heritage organization, asset development and security, tax planning, and administrative management for business leaders and families.
• Facture Électronique (Electronic Invoicing Compliance) Electronic invoicing transition services helping businesses comply with mandatory e-invoicing requirements starting September 2026, including platform recommendations and implementation support.

Quantifiable outcome

• 7,500 clients accompanied
• +4 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered core and minor.

• ADECIA IMMOcoreStrategic or Co-development PartnerADECIA IMMO is the firm's specialized real estate subsidiary, offering property investment advisory, rental management, and real estate tax optimization. It handles the ADECIA-immo.fr domain and contact email ([email protected]). It covers topics including furnished tourism rentals, Censi-Bouvard regime, and the Jeanbrun device.
• ADéQuaT VendéeminorOthersADéQuaT Vendée is an approved certification body for furnished tourist accommodations, referenced by ADECIA IMMO for property classification that enables owners to maintain tax advantages under the furnished rental regime.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Fiducial: Major French accounting, legal, and payroll services firm with national branch coverage targeting TPE/PME. Comparable to ADECIA in core service lines (accounting, payroll, legal) and SME customer segment, though larger and more nationally distributed.
• Cerfrance: French associative accounting network serving small businesses with accounting, payroll, legal, and consulting services across regional agencies. Closely comparable to ADECIA's regional agency model and SME focus, particularly in non-urban western France.
• BDO France: Major international accounting network with significant French presence offering audit, accounting, tax, and advisory services. Comparable to ADECIA in multidisciplinary services though serves larger mid-market and ETI clients.
• RSM France: International mid-tier accounting network with French operations serving mid-market companies with audit, tax, and consulting. Comparable in target customer and integrated service offering.
• Grant Thornton France: Mid-tier international accounting network in France providing audit, tax, and advisory services to mid-market and large SMEs. Comparable to ADECIA's ETI/larger-company segment and multidisciplinary service lines.
• In Extenso: One of France's largest networks of independent accounting and consulting firms with regional agency coverage and multidisciplinary services (accounting, payroll, legal, advisory). Directly comparable to ADECIA in business model, target customer (TPE/PME/ETI), and integrated service offering.
• Baker Tilly France: Mid-tier international accounting network operating in France with audit, accounting, tax, and advisory services for SMEs and mid-market companies. Comparable to ADECIA in target customer and multidisciplinary offering.

Broad incumbents

• Deloitte France: Big Four firm with national French coverage across audit, consulting, tax, and legal advisory. Competes with ADECIA in the upper end of its customer base (ETI, large enterprises) and for statutory audit mandates.
• KPMG France: Big Four firm operating broadly across France with audit, tax, and advisory services. Comparable as a competitor in the ETI/large-company segment but with vastly broader capabilities and brand recognition than ADECIA.

Others

• Pennylane: French fintech providing an all-in-one financial management platform for accountants and SMBs, and a stated partner/recommended solution of ADECIA. Relevant as both an ecosystem partner and a digital-native disruptor whose technology stack ADECIA's clients adopt.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtiktok.com/@inside_adecia
• Facebookfacebook.com/AdeciaLorieau
• LinkedInlinkedin.com/company/adecia-experts-comptables
• Instagraminstagram.com/inside_adecia

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ADECIA Experts-Comptables