What Aca Nexia does

Aca Nexia, now operating as Nexia S&A following its merger with Sefico Nexia, is a Paris-headquartered (31 rue Henri Rochefort, 75017 Paris) French accounting, audit, and advisory firm founded in 1985 with 101–250 employees. The firm is a member of Nexia International, a global network of independent accounting and advisory firms, which provides international reach for cross-border client engagements. Services are organized into four pillars: Audit (statutory audit, RSE/ESG audit for mission-driven companies, risk management and internal control), Conseil (transaction services, M&A, restructuring, transformation and operational consulting, ESG/CSRD advisory, training), Expertise (statutory accounting, group consolidation and reporting, BPO finance, international business services, payroll and social management), and Tax & Legal (juridical and fiscal counsel).

The firm generates revenue through a mix of recurring retainer engagements (audit, accounting, consolidation, payroll, BPO) and project-based professional services work (due diligence, M&A advisory, restructuring, ESG/CSRD implementation, Ecovadis assessments). Pricing is quote-based and not publicly disclosed, with engagements typically structured as multi-year contracts. Distribution is direct and partner-led, targeting mid-market and enterprise clients through industry-specific positioning, referrals, and content marketing (LinkedIn, Inside Nexia S&A magazine, LeDoTank partnership, podcast). The firm has no proprietary technology platform disclosed; its core "technology" is human-delivered advisory work supported by Brevo CRM for client communications.

The firm serves a diversified mid-market and enterprise client base across specialized regulated verticals including hospitality (Hôtellerie), auctioneers (Commissaires Priseurs), private education, family offices, nonprofit associations, and asset management, plus generalist large-enterprise and PE-backed clients. Named recent engagements span Havas/BETC (Eyesight Group), Ciclad (Glénan Concept Cars LBO), Meanings Capital Partners (Moulinot), PF INVEST (STIMY), Telma (Groupe Stratiforme-Compreforme, €22M revenue), Groupe Rema, and Clauger.

Name

Aca Nexia

Legal name

Nexia S&A

Website

https://aca.nexia.fr

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

101–250 employees

Short description

Aca Nexia (operating as Nexia S&A) is a Paris-based French accounting, audit, and advisory firm (founded 1985, 101–250 employees) serving mid-market and enterprise clients across specialized verticals including hospitality, auctioneers, private education, family offices, associations, and asset management.

Ownership category

akta.pro rank

Product category

Accounting & Advisory Services

NAICS

Offices of Certified Public Accountants (541211), Professional, Scientific, and Technical Services (54)

SIC

Services-Engineering, Accounting, Research, Management (8700), Services-Management Consulting Services (8742), Services-Legal Services (8111)

akta.pro primary industry

Financial Reporting & Technical Accounting Advisory (GAAP/IFRS) (BPAHABAF)

akta.pro secondary industry

Intercompany & Consolidation Support (Eliminations, Group Reporting Support) (BPAAAGAG)

Keywords

• Audit and assurance
• Accounting and bookkeeping
• Transaction advisory services
• M&A due diligence
• ESG consulting services

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Audit and Assurance Services: Recurring audit engagements providing financial statement assurance to clients, delivered annually or periodically as required by regulation or client need.
2. Accounting and Bookkeeping Services: Ongoing accounting expertise, consolidation, and reporting services billed on retainer or periodic basis for continuous client engagement.
3. Transaction and M&A Advisory: One-time project-based engagements including vendor due diligence, financial due diligence, ESG due diligence, and M&A advisory for specific transaction mandates.
4. Consulting Services: Transformation consulting, ESG advisory, restructuring, risk management, and operational consulting delivered as project-based or retainer engagements.
5. Legal and Tax Advisory: Legal and fiscal counsel services provided through associated legal practice, billed as professional services engagements.
6. BPO Finance – Accounting Outsourcing: Business process outsourcing for finance and accounting functions, typically on an ongoing retainer basis.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Aca Nexia (now Nexia S&A) is a French accounting and advisory firm providing audit, accounting, tax, legal, and consulting services to enterprises. Its offerings are organized into four pillars: Audit (financial audit, RSE audit, risk management), Consulting (transaction services, M&A, restructuring, transformation, ESG), Expertise (accounting, consolidation, BPO finance, international business services, payroll), and Tax & Legal advisory. The firm delivers services through partner-led engagements across specialized verticals including hospitality, auction houses, private education, family offices, nonprofits, and asset management.

Product overview

Nexia S&A is a French accounting, audit, and consulting firm formed from the merger of Aca Nexia and Sefico Nexia. The firm offers a comprehensive portfolio of professional services organized into four main pillars: Audit (financial audit, RSE audit, risk management), Consulting (transaction services, M&A, restructuring, transformation, operational, ESG consulting), Expertise (accounting, consolidation, BPO finance, international business services, payroll), and Tax & Legal advisory. Services are delivered across specialized industry sectors including hospitality, auction houses, private education, family offices, associations, and asset management. The firm also publishes Inside Nexia S&A, an interactive annual magazine with video content and podcasts.

Differentiator

Problem solved

Functional benefit

Products and services

• Audit Financier (Financial Audit) Financial audit services providing assurance on accounts and financial statements for French enterprises subject to statutory or voluntary audit requirements.
• Audit RSE et Sociétés à Mission RSE (Corporate Social Responsibility) audit and audit services for mission-driven companies under French law.
• Risk Management et Contrôle Interne Risk management and internal control advisory services for organizations seeking to strengthen governance and controls.
• Transaction Services Transaction support services including vendor due diligence, financial due diligence, and acquisition advisory for M&A and LBO transactions.
• M&A Advisory Mergers and acquisitions advisory services for buyers, sellers, and management teams.
• Restructuring Financier Financial restructuring advisory services for companies in difficulty, including turnaround and reorganization mandates.
• Conseil en Transformation Transformation consulting services, including support for electronic invoicing compliance and organizational transformation.
• Conseil Opérationnel Operational consulting services designed to improve business performance and operational efficiency.
• Conseil ESG ESG (Environmental, Social, Governance) consulting services including CSRD implementation and Ecovadis assessments.
• Expertise Comptable Accounting expertise and bookkeeping services for French companies on an ongoing retainer basis.
• Consolidation et Reporting Groupe Group financial consolidation and reporting services for multi-entity French and international groups.
• BPO Finance – Comptabilité Business Process Outsourcing for finance and accounting functions, typically delivered on an ongoing retainer basis.
• International Business Services International business services supporting cross-border operations, delivered in collaboration with Nexia International member firms.
• Paie et Gestion Sociale Payroll processing and social management services for French employers.
• Conseil Juridique et Fiscal Legal and tax advisory services delivered through an associated legal practice.
• Apports et Fusions Mergers and contributions advisory services for corporate restructurings and contribution transactions.
• Formations Professional training services on accounting, tax, and related technical topics.
• Sector Specialization: Hôtellerie Specialized accounting, audit, and advisory services for the hospitality sector, including support for electronic invoicing compliance.
• Sector Specialization: Commissaires Priseurs Specialized accounting, valuation, and advisory services for auction houses.
• Sector Specialization: Enseignement Privé Specialized accounting and advisory services for private educational institutions.
• Sector Specialization: Family Offices Specialized advisory services for family offices, including wealth management, tax planning, and succession support.
• Sector Specialization: Associations Specialized accounting, governance, and compliance services for non-profit associations.
• Sector Specialization: Asset Management Specialized accounting, compliance, and performance reporting services for asset management firms.

Named customers7 records

Segments9 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability1 record

Partnerships

Three partnerships are on record, tiered core and minor.

• Nexia InternationalcoreStrategic or Co-development PartnerNexia S&A is a member of Nexia, a worldwide leading network of independent accounting and advisory firms. This membership provides the firm with international reach and enables cross-border service delivery for clients with global operations. The network allows collaboration with member firms in other countries for international assignments.
• LeDoTankminorStrategic or Co-development PartnerNexia S&A partners with LeDoTank to co-publish the 'Lu pour vous' (Read for you) series—intellectual summaries of books including works by Bruno Latour. This content partnership demonstrates the firm's thought leadership and intellectual curiosity beyond traditional accounting topics.
• Sefico NexiacoreStrategic or Co-development PartnerAca Nexia and Sefico Nexia announced their merger to create Nexia S&A. This strategic combination merged two established French accounting and advisory firms to create a larger, more comprehensive professional services group with expanded capabilities and market presence.

Scale indicators2 records

Recent moves6 records

Regional players

• Ecco: Independent French audit and consulting firm focused on mid-market companies. Comparable in service mix and target market but without the global network affiliation of Nexia S&A.

Broad incumbents

• PwC France: Big 4 firm with comprehensive audit, tax, legal, and consulting services in France. Overlaps with Nexia S&A's mid-market and enterprise advisory work, particularly in transaction services and ESG.
• Deloitte France: Big 4 firm offering audit, consulting, financial advisory, and risk services in France. Larger incumbent competing across many of the same service lines as Nexia S&A.
• KPMG France: Big 4 firm in France with full audit, tax, and advisory capabilities. Competes with Nexia S&A for larger mid-cap and enterprise mandates, with substantially greater scale and brand recognition.

Direct peers

• BDO France: French arm of BDO, a top-tier global accounting and advisory network. Direct competitor for audit, accounting, tax, and M&A advisory services to French mid-market companies — closest network-based comparable to Nexia S&A.
• Grant Thornton France: French member of Grant Thornton International, offering audit, tax, and advisory services to mid-market enterprises. Comparable in scale, service mix, and target customer profile to Nexia S&A.
• RSM France: French member of RSM Global, focused on audit, tax, and consulting for mid-market businesses. Competes directly with Nexia S&A for the same French mid-cap and SME mandates.
• Mazars: France-origin international audit and advisory firm with strong French mid-market presence. Closely comparable in service breadth, vertical specialization, and cross-border capability to Nexia S&A.
• Crowe France: French member of Crowe Global, providing audit, tax, and advisory services to mid-market companies. Comparable network-based mid-tier competitor to Nexia S&A.
• Baker Tilly France: French member of Baker Tilly International, providing audit, accounting, and advisory services to mid-market companies. Directly comparable network-based competitor in France.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/nexia-sa
• Xx.com/EcaNexia

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Aca Nexia