Due Diligence Before Buying a Business in France: What to Check and What the Seller Must Disclose

Due diligence before buying a business in France: check first, sign after

Since 2019, French law no longer writes the buyer's information into the deed for him. The statute that forced every sale deed to state the previous sale, the registered charges and three years of turnover and results was repealed (law 2019-744, former C. com. Art. L 141-1); the buyer's protection now rests on two pillars: the checks the buyer runs before signing, and the seller's duty to disclose what is decisive (C. civ. Art. 1112-1) - backed by fraud (dol) when concealment crosses the line.

The case law on failed purchases reads like a due-diligence manual written backwards: inflated turnover, concealed safety orders, terraces without permits, licences the seller never held. Each of those cases is a check that was not run, or a disclosure that never came. This guide turns them the right way round - what to check, what the seller must volunteer, where the law expects you to inform yourself, and what you can claim when something was hidden.

Timing matters as much as content. The diligence belongs between the negotiation and the binding commitment - the conditional sale agreement can carry an audit condition, and the immobilisation period of a promesse exists precisely to let the buyer complete these checks with the business off the market. A diligence run after signature is not diligence; it is the collection of evidence for a dispute.

Why due diligence carries the deal since 2019

The repeal was not an accident of simplification - it was a change of model. The legislator's reasoning: the old list of compulsory particulars never contained everything a buyer needed anyway (no headcount, no contracts, no pending disputes), a professional buyer can obtain the information through its advisers, and the buyer remains protected by the seller's liability for fraud where information demanded was withheld or a material fact deliberately concealed.

So the legal weight moved to two places. First, the pre-contractual duty of disclosure: the party who knows information of decisive importance for the other's consent must disclose it, where the other legitimately ignores it or relies on its counterparty (C. civ. Art. 1112-1) - a duty that cannot be excluded by contract, that covers both parties, and that expressly stops short of the value of the business. Second, the buyer's own conduct: the law refuses to rescue a buyer from an error that was inexcusable - the product of a failure to inform himself, judged concretely against his experience, his profession and the advisers at his side (C. civ. Art. 1132). Between those two poles sits every dispute in this guide: what the seller had to say, against what the buyer had to ask.

What to check: the due diligence list the case law wrote

Every item below has cost a real buyer real money:

• The lease. Its existence, its rent, its term, its permitted activities, its assignment clauses - an error on the existence of the lease or the amount of the rent goes to the essential qualities of the business. A notarial-deed clause in the lease binds the sale itself.
• Licences and authorisations. Whether the activity's licence exists, is regular, and is transferable: sales have been annulled where the seller held no valid authorisation for a dance hall, where a drinks business was sold without the licence its operation required, and where a terrace sat on the public domain without a matching permit - or with a permit that did not cover the surface exploited.
• The accounts - against reality. Turnover, charges and results, certified and complete. A pharmacy's figures had been pumped by irregular practices; another seller showed only the favourable numbers and left the charges and results in the dark, pleading the absence of properly kept books. Both were fraud.
• Safety and compliance orders. Ask for every inspection report and administrative order on the premises: concealed safety-commission findings requiring works costing a third of the price, a formal notice served a month before the sale after an unfavourable opinion on continued operation, works of around €100,000 against €518,000 of intangibles - each grounded annulment or liability.
• The surroundings and access. The seller of a garden centre stayed silent on the precarious status of the only access suitable for its customers; the seller of a roadside bar-tabac concealed the imminence of a road-network change about to divert the traffic the business lived on. Both were fraud - check the access rights and ask the town hall what is planned.
• The clientele's reality. A business without its own clientele is not a fonds at all - an error on that point goes to the essence. Trading records, customer structure and the seller's actual operation belong in the file.
• Registered charges. Pledges and the unpaid previous seller's lien follow the business into your hands; check the registrations and purge them out of the price.
• Employees, contracts, disputes. The workforce continues with you by law; contracts move only with consent; pending litigation is precisely the kind of decisive information the disclosure duty covers. Ask expressly, in writing - a documented question turns silence into concealment.
• The changes of use. Works or a change of use done without the landlord's authorisation expose the buyer to a rent increase or an order to restore the premises - a concealment the courts have sanctioned. Compare the state of the premises against the lease and the permits.
• The seller's declarations in the deed. Read them as evidence, not boilerplate: a deed declaring "no infringement liable to cause closure" while a formal notice sat in the seller's drawer became the centrepiece of the buyer's fraud claim.

Your target's due diligence profile

Pick the business you are buying - the check shows where deals of that type have failed, and what to verify first.

Due diligence and disclosure: what the seller must reveal, what stays on the buyer

The seller's side. Deliberately concealing information whose decisive character the seller knows is fraud (C. civ. Art. 1137, al. 2) - and the concealment cases above show how wide "decisive" runs: authorisations never held, precarious access, imminent road changes, old safety orders, charges and results kept dark, unauthorised changes of use exposing the buyer to a rent increase, false declarations of compliance in the deed itself. Fraud needs no elaborate scheme: a staging, an artifice, or a simple lie with nothing behind it all qualify. And an "as is" clause changes nothing - taking the premises "in their state" does not excuse the seller from disclosing the defects it knew.

The buyer's side. Three limits keep the balance:

• Value and profitability are your problem. An error on the value of the business or its profitability voids nothing, unless it flows from an error on an essential quality - and the disclosure duty itself excludes the value estimate.
• Inexcusable error rescues no one. The buyer of a hotel-restaurant, an experienced operator of a public establishment, lost against a seller who had not volunteered that the hotel's classification required works: nothing had been hidden from him during a detailed visit, and he was expected to inform himself about the norms his profession implied. The error's excusability is judged concretely - experience, profession, advisers at hand.
• What you were shown counts as known. A seller who inverted three years of figures escaped fraud because the buyer had countersigned the accounting documents carrying the true numbers. Reading the file is part of the diligence - the law treats what you were shown as what you knew, whoever failed to open the folder.

The tiebreaker. Fraud rebalances everything: an error provoked by fraud is always excusable (C. civ. Art. 1139). The buyer who failed to check is still protected where the seller actively deceived - which is why sellers' safest course is documented candour, and buyers' safest course is written questions.

One asymmetry is worth naming for foreign buyers in particular. The excusability of your error is measured against your profile - a seasoned operator is expected to know that public establishments carry compliance regimes, that licences have scopes, that accounts can be certified. A first-time foreign buyer is judged more gently, but the safest reading is the strictest one: run the diligence as if you were the professional the court will compare you to, because your advisers' presence at your side is itself part of the assessment. Hiring counsel raises the bar for what you should have caught - and lowers, sharply, the chance there is anything left to catch.

When due diligence finds a lie too late: erreur, dol and your remedies

Three defects of consent open the annulment of a French business sale - error (you deceived yourself), fraud (the other side deceived you), duress (you signed under threat or abuse of dependence) - and each voids the sale only where it was decisive: without it, no contract, or a contract on substantially different terms, judged by the person and the circumstances (C. civ. Art. 1130). Buyers bring most of these claims; the rules that decide them:

• Timing. Consent is assessed at the contract's formation; later events cannot themselves vitiate it - but courts may use them as evidence of what was true at signature.
• Proof. The defect is a fact, provable by any means, testimony and presumptions included, even against a notarial deed, and the burden rests on the party claiming its consent was vitiated (C. civ. Art. 1353), shifting as the defences are raised.
• Error's terrain. Essential qualities of the business as agreed: the existence of the lease or the level of the rent, the existence of a licence the activity requires, the existence of a clientele of the business's own (C. civ. Arts. 1132 and 1133). Outside that terrain, value, profitability, motives not made a condition, error fails; and error about the other party voids the sale only where the deal was struck in consideration of the person.
• Fraud's terrain. Manoeuvres, staging, artifice - or a simple lie with nothing behind it, or silence: the intentional concealment of decisive information (C. civ. Art. 1137). Fraud carries the double sanction: the sale's annulment where consent was vitiated, and the seller's liability besides.
• Both directions. The defects can vitiate the seller's consent as much as the buyer's, the statute protects each side, though the reported disputes are overwhelmingly buyers' claims, which is why this guide reads from the buyer's chair.

Post-diligence discovery: the seller hid something - what can you claim?

Pick what you discovered - the check maps it against the decided cases.

Papering the due diligence: the file that protects both sides

The proof rules make the paperwork the strategy. The defect of consent is proved by any means, and the burden moves back and forth with the parties' allegations - so the side with the file wins the shifts. For the buyer: questions in writing, the seller's answers attached to the deed, the documents received listed and countersigned, the checks run and dated. A written question converts the seller's silence into concealment; an undocumented conversation converts your diligence into an allegation.

For the seller, the same file is the defence. Disclosure documented, the inspection reports handed over, the true figures shown and countersigned, the known defects stated in the deed, is what defeated the buyer in the inverted-figures case and the hotel-visit case. Since the 2019 repeal, the deed's representations section is where all of this lives: what was disclosed, what was asked, what each party warrants. A deed that records the diligence is a deed that ends most arguments before they start; the mandatory particulars are gone, and this is what replaced them.

Sequence the file with the deal instruments. The written questions go out with the confidentiality agreement; the answers and documents arrive during the exclusivity or option period; the audit condition in the sale agreement defines which documents count and who certifies them; and the deed's representations restate, dated and signed, everything the diligence established. Each instrument holds one end of the same thread - which is why the diligence is run by the lawyers drafting the deal, not next to them.

Frequently Asked Questions

This article is for general information only and states French law as published in the sources available at the date shown above. It does not constitute legal or tax advice. What must be checked, and what a discovered defect is worth, depends on the business and the file. Always seek qualified legal advice before signing.