Practical guide · Selling a company
The garantie d’actif et de passif (GAP) is the undertaking by which the seller indemnifies the buyer, or the company sold, if a liability originating before the sale surfaces afterwards, or if a declared asset proves non-existent or overvalued. It rests on the seller’s representations and is negotiated around four parameters: the deductible, the de minimis threshold, the cap and the duration. It is commonly secured by an escrow or a bank guarantee.
Buying shares means buying a company with everything it did before the sale. A tax reassessment covering an earlier financial year, an employment dispute born under the former management or an overvalued inventory burden the buyer even though they originate in the seller’s period. The warranty and indemnity provisions organise the allocation of that risk.
The seller’s statutory warranties, such as the warranty against hidden defects, relate to the thing sold, that is the shares, and not to the assets and liabilities of the company whose capital they represent. They are admitted only within narrow limits in share deals. Claims based on fraud or mistake remain available, but they require difficult proof and lead to the annulment of the sale rather than to an adjusted indemnity. Hence the use of a contractual, precise and quantified warranty.
The buyer should therefore never rely on general law to cover a liability revealed after the sale: whatever is not written into the warranty is, in practice, for the buyer’s account.
The terminology covers distinct mechanisms, which must be named precisely in the agreement.
Whatever its object, the warranty designates the beneficiary of the indemnity, and that designation drives the regime. A so-called reconstitution warranty (garantie de reconstitution) provides for the indemnity to be paid to the company itself, restoring its net assets up to the revealed liability. A so-called value warranty (garantie de valeur) provides for it to be paid to the buyer, compensating the loss of value of its shares, most often in proportion to its stake. The choice has practical and tax consequences for the treatment of the indemnity; it is settled with the transaction’s tax adviser.
Before drafting, the parties must name the mechanism chosen and designate the beneficiary of the indemnity, because these two choices drive the tax treatment of the indemnification and the way it is computed.
The warranty rests on a series of representations by which the seller describes the company as at the date of sale: existence and capital, accuracy of the reference accounts, tax and employment position, key contracts, ownership of assets and intellectual property, pending or foreseeable disputes, regulatory compliance. Any inaccuracy in a representation gives rise to indemnification within the agreed limits.
The precision of these representations determines the real scope of the warranty: a broad representation protects the buyer; a representation qualified by listed exceptions protects the seller.
The seller should re-read each representation as an undertaking for which it will answer on its own assets, and have every known exception recorded in the disclosure schedules; the buyer should resist knowledge qualifiers so wide that they would empty the warranty.
Market practice also sets two categories apart. So-called fundamental representations, such as the existence of the company, title to the shares or the regularity of the capital, generally sit outside the general cap and follow their own duration. Risks identified in due diligence, already known and often quantifiable, leave the general warranty and are covered by specific indemnities, payable from the first euro, outside the deductible and the cap.
These parameters are negotiated together, not one by one: before the discussion, each party should have quantified the deductible-and-cap combination it can accept in view of the price and of the risks identified in due diligence, and settled what belongs to the fundamental representations or to a specific indemnity.
The warranty is only worth its procedure. The agreement sets the time limit and form of the notice, its content, and the rules applicable where the claim comes from a third party: information of the seller, the seller’s right to conduct or monitor the defence, prohibition on settling without its consent. Failure to comply with these forms may deprive the buyer of its right to indemnification: the notice must be prepared with the same rigour as the agreement.
As soon as a risk materialises, the buyer must reopen the agreement before acting: the time limit, form and content of the notice are conditions of its indemnification; the seller, for its part, should insist on strict compliance with the procedure before any discussion on the merits.
A warranty is only worth the seller’s ability to pay. Three forms of security are customary.
Warranty and indemnity insurance, usually taken out by the buyer, may also replace all or part of the seller’s exposure in transactions of sufficient size.
The buyer should require security calibrated on the cap and duration of the warranty; the seller should negotiate staged releases, so as not to immobilise part of the price beyond what is necessary. See also: escrow or first-demand guarantee, securing French warranty claims.
The seller seeks to narrow the warranty: representations qualified by its knowledge, exclusion of matters disclosed in due diligence, high deductible and threshold, low cap, short duration. The buyer seeks the opposite, plus specific indemnities for the risks identified in due diligence, outside the deductible and the cap. The point of balance depends on the price, the quality of the due diligence and the balance of power. This is the heart of the negotiation of a share deal.
Each party should enter the negotiation with its own hierarchy of concessions: knowing what it will give on duration to obtain on the cap, and conversely, serves better than defending every clause at the same price.
No. They are purely contractual. In practice they appear in almost every sale of a controlling interest, and their absence is generally traded against a price reduction.
The deductible is assessed on aggregate losses; the threshold is assessed claim by claim. The two are often combined.
It depends on the agreement. It may provide that matters disclosed in due diligence are excluded from the warranty, or on the contrary that the buyer’s knowledge is irrelevant. The clause must be explicit.
The duration is set by the agreement. It often combines a general period with specific periods for tax and social security risks, aligned with the reassessment periods of the authorities concerned.
A warranty to draft, negotiate or enforce?
The firm acts for sellers and for buyers. See also: how does a share sale work in France.
Mickaël Labigne, avocat, admitted to the New York and Paris Bars. About the firm.
Last updated: 5 October 2026.
This information is general and does not constitute legal advice. Every transaction calls for its own analysis.