What Ad Astra does

Ad Astra, legally In Extenso Opérationnel, is a French accounting, consulting, and financial advisory firm headquartered at 62 Rue François 1er, 75008 Paris. The firm was created in June 2021 when Deloitte France's Accounting Services unit for large enterprises was acquired by the In Extenso group and rebranded as Adastra By In Extenso; it operates as the dedicated grands comptes brand within In Extenso (a French accounting and advisory conglomerate of 7,300 employees and €600M 2024 revenue). Ad Astra employs 330 professionals across five French offices (Paris, Lyon, Lorient, Lille, Nantes) and 12 areas of expertise, including 30 chartered accountants (experts-comptables), and serves approximately one-third of CAC 40 companies alongside ETIs, PMEs, and international groups with French subsidiaries. Service lines span expertise-comptable and consolidation (French GAAP, IFRS, US GAAP), BPO of accounting and HR/payroll processes delivered through four shared service centers, advisory (transformation finance, data management, sustainability/CSRD, infrastructure/transport), and operational assistance to client finance functions across real estate, banking, insurance, pharmaceutical, energy, and public infrastructure sectors. The business model is engagement-based professional services revenue combined with recurring managed-services BPO contracts with SLA and KPI commitments, delivered on standard enterprise software (SAP, Oracle, Yardi, Kyriba, Power BI, OneStream, Opera/Amelkis, Yooz) and ISO 27001-aligned information security. Go-to-market is direct enterprise sales through partner-led relationships, leveraging the In Extenso referral network and ETL Global international affiliation. Recent strategic activity centers on inorganic growth via acquisitions (Abington Advisory in March 2023 for advisory expansion; Deloitte Conseil's BPO activity in 2024), reaching €40M turnover by 2025 with multi-year mandates (e.g., 13+ years with Société de la Tour Eiffel managing 60 entities; 30+ years with a listed holding group) and emerging regulatory-driven services around e-invoicing (PDP) and CSRD sustainability disclosure.

Name

Ad Astra

Legal name

In Extenso Opérationnel

Website

https://ad-astra.fr

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

101–250 employees

Short description

Ad Astra is a French accounting, advisory, and BPO firm serving CAC 40 companies, ETIs, and international groups with subsidiaries in France, operating as the grands comptes brand of the In Extenso group from five offices across France with 330 professionals.

Ownership category

akta.pro rank

Product category

Accounting & Financial Advisory Services

akta.pro primary industry

Accounts Receivable (Invoicing, Cash Application, Deductions) (BPAAAGAB)

akta.pro secondary industry

E-Invoicing & Invoice Presentment (B2B/B2G) (FSAMAJAF)

Keywords

• Accounting expertise
• Consolidation services
• Finance business process outsourcing
• Payroll HR outsourcing
• Financial advisory consulting

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Services and Advisory: Engagement-based professional services including accounting expertise, consolidation, advisory, operational assistance, transformation finance, data management, sustainability, and infrastructure consulting. Billed through project-based or retainer arrangements for financial direction departments of large enterprises and ETIs.
2. BPO (Business Process Outsourcing): Recurring BPO contracts for accounting processes, HR processes, and payroll management delivered through shared service centers in France. Revenue model based on ongoing service contracts with quality and SLA commitments, transforming fixed costs into variable costs for clients.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Ad Astra is the grands comptes (large accounts) brand of In Extenso, providing chartered accountancy, statutory and IFRS/US GAAP consolidation, and advisory services to large French enterprises (CAC 40), ETIs, and PMEs. It also operates BPO (Business Process Outsourcing) engagements for accounting and HR/payroll processes delivered through four shared service centers in France, plus operational assistance embedded within client finance departments. Complementary advisory lines cover finance transformation, data management, sustainability/CSRD, and infrastructure/transport/logistics strategy.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Customer receivables reduced by 50% through financial controlling and data analyst engagement
• +5 more outcomes

Named customers26 records

Segments6 records

Ideal customer profiles1 record

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

Feature4 records

Partnerships

Four partnerships are on record, tiered core and minor.

• In ExtensocoreStrategic or Co-development PartnerAd Astra is the grands comptes brand of In Extenso, France's leading accounting and advisory firm with 7,300 employees and €600M revenue in 2024. The relationship is a brand/partnership within the same corporate group, with shared resources, brand association, and referral dynamics. In Extenso includes multiple specialized brands (In Extenso Recrutement, In Extenso Finance, In Extenso Innovation Croissance, In Extenso Avocats, In Extenso Patrimoine, Transaxio & Hôtel).
• ETL GlobalminorStrategic or Co-development PartnerIn Extenso and Ad Astra are affiliated with the ETL Global international network, providing access to international expertise and cross-border collaboration for clients with international operations.
• Abington AdvisorycoreStrategic or Co-development PartnerIn March 2023, Abington Advisory, an operational consulting firm specializing in performance improvement and digital transformation, joined Ad Astra to develop its advisory offering. This acquisition expanded Ad Astra's consulting capabilities.
• International Partner NetworkminorStrategic or Co-development PartnerAd Astra leverages international partner cabinets (cabinets partenaires) for serving clients with cross-border needs, particularly for International Business Services serving foreign groups operating in France.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• BDO France: Major mid-tier accounting and advisory network in France serving large enterprises and ETIs with audit, accounting, tax, and advisory services. Closely comparable to Ad Astra in target customers (large French accounts), service mix, and large-enterprise positioning outside the Big Four.
• RSM France: French member of the RSM international network providing accounting, tax, and advisory services to mid-market and large enterprises. Comparable to Ad Astra in targeting mid-sized and large French corporates with cross-border support through the RSM network.
• Grant Thornton France: Mid-tier accounting and advisory firm in France serving mid-market and large enterprise clients with audit, tax, advisory, and outsourcing services. Direct competitor to Ad Astra for CAC 40-adjacent and ETI mandates requiring multi-disciplinary teams.
• Fidal: Leading French law and tax firm with a strong accounting and advisory arm serving large enterprises. Comparable to Ad Astra in serving large French corporates with tax, legal, and finance function advisory, particularly relevant for cross-functional mandates.
• Crowe France: French member of the Crowe Global network offering accounting, audit, tax, and advisory services to mid-sized and large enterprises. Comparable to Ad Astra in targeting French corporates with multi-disciplinary service teams and mid-tier positioning.
• Baker Tilly France: French accounting and advisory network providing audit, accounting, tax, and consulting services to mid-market and large enterprises. Direct competitor to Ad Astra for large French accounts and ETIs in similar service categories.

Broad incumbents

• Deloitte France: Big Four firm in France and the originating organization of the Ad Astra business (acquired by In Extenso in 2021). Continues to compete with Ad Astra in audit, advisory, and BPO for the largest French enterprises, but at substantially greater scale and breadth.
• PwC France: Big Four firm with a major French practice in audit, tax, consulting, and deals. Competes with Ad Astra for the largest CAC 40 advisory, BPO, and finance transformation mandates, with significantly larger scale and global reach.
• Mazars: International audit, tax, and advisory firm with a strong French presence serving large enterprises, including CAC 40 constituents. Comparable to Ad Astra in service lines and large-account focus, but at materially larger scale and with broader international footprint.
• KPMG France: Big Four firm providing audit, tax, and advisory services to large French enterprises, including major BPO and finance transformation engagements. Direct competitive overlap with Ad Astra's largest-account and BPO offerings, with materially larger scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ad-astra-by-in-extenso

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 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 Ad Astra