A US-based private equity sponsor signs a letter of intent to acquire a French technology company. The data room opens. Within days, the deal team encounters unfamiliar corporate structures, employee representative obligations, and a capitalisation table referencing share categories that do not exist in their home jurisdiction. The transaction does not fail – but it nearly doubles its planned timeline. France is an attractive acquisition target market. Its legal system, however, rewards preparation and penalises assumptions imported from other jurisdictions.
M&A due diligence in France is a structured legal investigation conducted before signing a share purchase agreement, designed to identify risks in the target company's corporate, employment, tax, and regulatory standing. The process typically runs four to eight weeks for a mid-market deal and culminates in a due diligence report that informs the representations and warranties and the closing conditions of the transaction. French commercial legislation imposes specific disclosure obligations and procedural requirements that foreign acquirers must understand before committing to a binding timetable.
This guide covers every material stage of legal due diligence for a French acquisition: the pre-signing groundwork, the workstream structure, documentary priorities. The most frequent errors made by international buyers. Additionally, a self-assessment checklist to determine which approach best suits your transaction.
The French legal context: what makes due diligence different here
France operates under a civil law tradition. Its commercial legislation – the Code de commerce (French Commercial Code) – governs company formation, share transfers, director liability, and a wide range of transactional obligations. Unlike common law systems, rights and obligations flow primarily from statute and codified regulation, not from accumulated case law. Foreign acquirers accustomed to English law should adjust their expectations accordingly.
The two most common target structures encountered in French acquisitions are the société à responsabilité limitée (SARL. a private limited company broadly equivalent to a UK limited company) and the société par actions simplifiée (SAS. a simplified joint-stock company offering significant structural flexibility). The SAS has become the dominant vehicle for venture-backed and founder-led businesses. Its articles of association can create complex governance rights, drag-along mechanisms, and liquidation preferences that require careful review. An acquirer relying on a standard common law due diligence checklist will frequently miss SAS-specific provisions that have no equivalent abroad.
The Cour de cassation (France's highest court for civil and commercial matters) has consistently upheld that pre-contractual good faith obligations apply to negotiations. This means a buyer who conducts due diligence and then withdraws without substantive justification may face a claim for damages under French civil legislation. Practitioners in France treat this rule as a live commercial risk, not a theoretical one. Buyers should obtain legal advice before entering formal negotiations – not only after the data room opens.
Employment law adds a further layer. France's labour legislation grants significant rights to employees and to the comité social et économique (employee representative body, commonly referred to as the CSE). In certain transactions, the CSE must be informed and consulted before the deal can proceed. Failure to complete this process on time is not a formality breach – it can delay closing by several weeks and, in some circumstances, expose the buyer to legal challenge from employee representatives.
For acquirers also evaluating targets in other jurisdictions. The approach to French due diligence shares structural similarities with. but differs materially from. the process described in our guide to M&A due diligence in Portugal. There, distinct civil law procedures and corporate forms apply.
Step-by-step process: from letter of intent to signed SPA
Legal due diligence in France follows a defined sequence. Each stage has its own requirements, typical duration, and risk exposure. The steps below apply to a standard share acquisition of a French operating company.
Step 1 – Letter of intent and exclusivity (weeks 1–2). The process begins with a letter of intent setting out the indicative price, key conditions, and exclusivity period. As noted above, certain clauses in this document are binding under French law even before the share purchase agreement is executed. The confidentiality undertaking, in particular, should be reviewed carefully: French courts have held that breaches of pre-contractual confidentiality give rise to damages claims under civil legislation governing civil liability.
Step 2 – Data room access and workstream allocation (weeks 2–3). Once exclusivity is agreed, the seller opens a virtual data room. The buyer's legal team divides the review into workstreams: corporate and governance, employment and labour, intellectual property, real estate, environmental, tax, regulatory, and litigation. Each workstream should be staffed by a specialist. A common error by foreign buyers is to treat French employment and IP as secondary workstreams. In practice, employment liabilities and unregistered IP ownership gaps are among the most frequent value-affecting findings in French transactions.
Step 3 – Corporate and governance review (weeks 2–5). This workstream examines the target's corporate existence, ownership chain, and governance documents. Key documents include the statuts (articles of association), shareholder agreements (pactes d'actionnaires), board minutes, and the registre des décisions (register of corporate decisions). Buyers should request a full extract from the Registre du commerce et des sociétés (French commercial register). the equivalent of a company registry search. and verify that all capital increases. Share transfers. Additionally, pledges over shares are properly reflected. Discrepancies between the data room documents and the register are a recognised red flag.
Step 4 – Employment and labour review (weeks 2–5). France's employment legislation is extensive. The due diligence team should review all employment contracts, collective bargaining agreements (conventions collectives), the CSE consultation record, and any pending labour tribunal claims. Where the target has more than fifty employees, the acquirer must plan for a CSE information and consultation process that typically takes four to six weeks. This process cannot be shortened by agreement between buyer and seller. Experienced practitioners in France treat CSE timing as a hard constraint on the overall transaction timetable – not a variable.
Step 5 – IP and technology review (weeks 3–5). For technology companies, the IP workstream is often the most consequential. French intellectual property legislation attributes ownership of works created by employees to the employer in specific circumstances, but the rules differ for software and for inventions made outside working hours. The due diligence team should verify that all key IP is formally assigned to the target entity. not to founders personally. and that any open-source software in the product stack is licensed on terms compatible with a commercial sale. A huissier de justice (a court-authorised enforcement officer in French law) can be engaged to conduct a formal constat (official record) of digital assets where IP ownership is disputed.
Step 6 – Litigation and regulatory review (weeks 3–5). This workstream covers pending and threatened litigation, regulatory investigations, and any sector-specific licensing requirements. Buyers in regulated sectors – financial services, healthcare, defence – should identify whether the change of control triggers a mandatory regulatory approval. French competition legislation requires prior clearance for concentrations exceeding defined turnover thresholds. Failure to notify can result in substantial penalties and, in some cases, an obligation to unwind the transaction.
Step 7 – Due diligence report and SPA negotiation (weeks 5–8). The due diligence report summarises findings, assigns risk ratings, and identifies issues that require resolution before closing. This report directly informs the representations and warranties in the share purchase agreement. Findings that cannot be resolved pre-signing are typically addressed through specific indemnities, price adjustments, or closing conditions. The SPA itself is usually governed by French law for domestic targets, though some cross-border transactions use English law for the transaction documents while French law governs the target company.
To discuss how this process applies to your specific acquisition target in France, reach out to info@ferrazwhitmore.com for a tailored assessment.
Documentary checklist: what to request from the seller
The following categories represent the minimum documentary scope for legal due diligence on a French operating company. Missing documents in any category should be treated as a disclosure gap requiring explanation.
Corporate documents. These include the current and historical statuts, all shareholder agreements and side letters, board and shareholder meeting minutes for the preceding three years, the share register, and any pledges or encumbrances over shares. For a target structured as a group with French subsidiaries, the same documents are required at each entity level.
Employment documents. The full list of employment contracts (or a representative sample for large workforces), the applicable convention collective. The CSE constitution and recent meeting minutes, any profit-sharing or incentive plan documentation. Additionally, a schedule of all pending or threatened labour claims.
IP and technology documents. IP ownership certificates and assignment agreements, software licences (inbound and outbound), open-source usage policies, domain name registrations, and any IP litigation or cease-and-desist correspondence.
Material contracts. All contracts above a defined value threshold, key customer and supplier agreements, distribution arrangements, and any contracts containing change-of-control clauses. This last category is critical: a significant share of commercial contracts in France include provisions that permit the counterparty to terminate or renegotiate on a change of ownership. Identifying these before signing prevents a painful post-closing surprise.
Regulatory and compliance documents. Sector licences, regulatory correspondence, data protection records (including CNIL registrations and data processing agreements under EU data protection legislation), and any environmental compliance reports where the target operates industrial premises.
Litigation and disputes. A complete schedule of pending, threatened, or recently resolved litigation, arbitration, and administrative proceedings. Any correspondence with a huissier de justice in connection with asset preservation measures or enforcement actions should also be included.
For the full scope of M&A advisory support in France, including post-due diligence SPA negotiation and closing, see our M&A services page for France.
Common errors by foreign acquirers – and how to avoid them
International buyers entering the French market for the first time tend to make a predictable set of errors. Each one carries a concrete cost.
Underestimating the CSE consultation timeline. Buyers frequently build a transaction timetable that assumes closing can occur within six weeks of signing. Where a CSE consultation is required, this is almost never achievable. The CSE is entitled to a minimum consultation period, which courts have enforced strictly. A buyer who pressures the seller to close before the consultation is complete risks the employee representatives challenging the transaction before a labour tribunal. In practice, this means building the CSE process into the timetable from day one – not discovering it at week four.
Missing change-of-control clauses in material contracts. French commercial contracts frequently include intuitu personae clauses – provisions making the contract personal to one of the parties. A change of ownership can trigger termination rights even where no explicit change-of-control clause exists. The due diligence team must review not only the text of each material contract but also the surrounding correspondence and any side letters. A non-obvious risk: some French companies maintain informal commercial relationships without written contracts. These arrangements are not visible in a data room and must be identified through management interviews.
Assuming that French IP ownership follows the employment contract. In common law jurisdictions, IP created by an employee in the course of employment typically vests in the employer automatically. French intellectual property legislation takes a more nuanced approach. For inventions, the rules depend on whether the invention was made in the course of the employee's duties or independently. For software, the employer holds economic rights but the moral rights of the author remain with the creator and are, under French law, inalienable. Buyers acquiring a technology asset should insist on formal IP assignment agreements – not rely on employment contracts alone.
Treating the letter of intent as non-binding in its entirety. As noted in the process section, French civil legislation on pre-contractual liability applies from the moment formal negotiations begin. A buyer who enters negotiations, receives confidential information through a data room, and then withdraws without substantive reason may face a bad-faith withdrawal claim. The damages awarded by French courts in such cases can be material. Buyers should seek legal advice on their withdrawal rights before entering exclusivity.
Ignoring the corporate governance documents of an SAS. The SAS structure is exceptionally flexible. Its statuts and associated shareholders' agreements can create approval thresholds, veto rights, and liquidity preferences that have no equivalent in the buyer's home jurisdiction. A foreign buyer who fails to read these documents carefully. or who reads them without local legal support. may find that the acquisition requires consents from minority shareholders who were not identified as parties to the transaction.
Failing to verify the tax consolidation status. Where the target is a member of a French tax consolidated group (intégration fiscale), the acquisition will typically trigger an exit from that group. This has tax consequences for the seller's group and may also affect deferred tax positions at the target level. The tax due diligence workstream and the legal workstream must be coordinated on this point. Many cross-border deals separate these workstreams entirely, with the result that the interaction between corporate structure and tax position is not identified until late in the process.
For a deeper analysis of the corporate law environment in which these transactions take place, our team's overview of corporate law in France addresses the statutory backdrop in detail.
Self-assessment checklist before launching due diligence
Legal due diligence in France is well-suited to your transaction if the following conditions are present. Use this checklist to assess readiness before committing to a timetable.
Corporate and structural conditions. Verify that the target is a French-registered entity (SARL or SAS are the most common forms for private M&A). Confirm that the ownership chain is clear and that there are no pending share transfer restrictions in the statuts or any shareholder agreement. Identify whether the target has subsidiaries – French or foreign – that require separate due diligence workstreams.
Employment conditions. Determine the headcount of the target and all subsidiaries. If total headcount exceeds fifty, plan for CSE consultation and add at least four weeks to your timetable. Identify the applicable convention collective early – it affects the scope of employment due diligence significantly. Confirm whether any collective restructuring process is pending or recently completed.
Regulatory conditions. Identify the target's sector. For financial services, insurance, healthcare, defence, and media, mandatory regulatory approvals may be required before closing. In sectors touching on national security or strategic infrastructure, French foreign investment screening rules under French investment legislation may require prior government authorisation. This screening process adds several weeks to the timeline and should be initiated as early as possible.
IP conditions. Confirm that the target holds – not merely uses – all IP material to its business. For technology companies, conduct a preliminary open-source licence audit before the data room opens. Where any key IP was created by founders before the company's incorporation, obtain copies of all assignment documentation at the outset.
Decision framework: which transaction structure to use. A share purchase provides the acquirer with continuity of contracts, licences, and relationships – but also with all historical liabilities. An asset purchase allows selective acquisition of business components but may trigger transfer taxes and require consent from contractual counterparties. For most mid-market transactions in France, a share purchase via an SPA is the standard route. Asset purchases are more common in distressed or carve-out situations. Where the target is a regulated entity, the share purchase route is often the only practical option because licences cannot be transferred separately.
Closing conditions. Standard closing conditions in a French SPA include regulatory approvals (where applicable), CSE consultation completion, absence of material adverse change, and the accuracy of representations and warranties at closing. Conditions precedent should be drafted with specific reference to French procedural timelines. Vague or open-ended conditions are a source of closing disputes – French courts apply a strict interpretation of contractual conditions under commercial legislation.
Frequently asked questions
Q: How long does M&A due diligence typically take in France?
A: For a mid-market transaction, legal due diligence in France typically runs four to eight weeks from the opening of the data room. Complexity increases the timeline: regulated sectors, multi-entity group structures, or significant employment issues can push the process beyond ten weeks. Agreeing a realistic timeline with the seller before the data room opens prevents scope-creep disputes later.
Q: Is a letter of intent legally binding in France?
A: Under French commercial legislation, a letter of intent is generally not binding on the principal transaction terms, but specific clauses – such as exclusivity, confidentiality, and cost-allocation – are enforceable. A common misconception is that signing a letter of intent creates no obligations at all. French courts have consistently imposed liability on a party that withdrew from negotiations in bad faith, even before a share purchase agreement was signed.
Q: What are the main cost components of legal due diligence in France?
A: Engaging a lawyer in France for M&A due diligence involves fees that scale with deal complexity, target size, and the number of legal workstreams. For a straightforward acquisition of a single French entity, legal fees typically start in the range of tens of thousands of euros. Multi-jurisdictional or regulated-sector transactions can cost several times more. Buyers should also budget for translation costs, notarial fees where real property is involved, and any regulatory filing charges.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions on cross-border M&A transactions, corporate law, and regulatory matters. As a law firm in France and across Europe. Our team combines Portuguese civil law expertise with English common law tradition to support international acquirers through every stage of the M&A due diligence process in France. from letter of intent through SPA negotiation and closing. We advise private equity sponsors, strategic buyers, and in-house legal teams who require results-oriented counsel across multiple legal systems. The firm's M&A practice covers civil law and common law jurisdictions across Europe, the Americas, and Asia-Pacific, supported by a network of local counsel. Our attorneys have advised on share purchase transactions across both civil law and common law systems, including matters requiring coordination with French regulatory bodies and employee representative processes. To explore legal options for your acquisition in France, schedule a consultation at info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.