Earn-outs in Cross-border M&A in France (2026): Drafting, Tax & Enforcement

Earn-outs in France have become an increasingly central deal tool in 2026, as heightened foreign direct investment (FDI) screening and regulatory scrutiny push buyers and sellers to bridge valuation gaps and allocate post-closing risk through contingent consideration. An earn-out defers part of the purchase price and ties it to the target’s future performance, letting parties close a deal despite disagreement over value or uncertainty over regulatory approvals. This guide is written for in-house counsel, private equity and strategic acquirers, sellers and their tax and transaction teams evaluating whether, and how, to structure, tax and enforce an earn-out in a France-facing cross-border transaction. It combines practical drafting checklists, French tax analysis, enforceability strategy and worked examples, all grounded in primary sources.

For bespoke structuring, our Cross-Border M&A lawyers in France, Mathieu De Korvin can advise on the mechanics discussed below.

This article is general information, not legal advice. Every transaction is fact-specific; consult qualified French counsel before acting.

1. What is an earn-out and why earn-outs in France matter in 2026

An earn-out is a contractual mechanism under which a portion of the consideration for a business or shares is paid after completion, conditional on the target achieving defined performance milestones. Those milestones are usually financial, revenue, EBIT or EBITDA thresholds, but can also be operational, such as securing a licence, retaining key customers or hitting product-development targets.

Earn-outs typically take one of three forms:

• Cash. The most common structure, with deferred payments tied to measured performance over one to three years.
• Shares. Consideration settled in buyer equity, aligning the seller with the combined group’s success.
• Hybrid. A blend of cash and shares, sometimes with escrow or set-off features layered in.

In 2026, earn-outs in France are being deployed not only to resolve valuation disputes but also to absorb regulatory and integration uncertainty. Where a deal is subject to FDI review or sectoral approvals, an earn-out can defer value until conditions crystallise, giving both sides a mechanism to share the downside if approvals impose commitments or the integration underdelivers. The result is a tool that does double duty: bridging price and managing risk.

2. Why use an earn-out in cross-border deals into France (FDI & regulatory context)

Cross-border earn-outs are attractive precisely because they defer commitment until information improves. A foreign buyer acquiring a French target may face months of regulatory review; a seller confident in the business may resist a discounted fixed price. An earn-out reconciles those positions by making part of the payment contingent on outcomes neither side can fully predict at signing.

The 2026 environment sharpens this logic. France’s foreign investment control regime, administered by the Ministry for the Economy (through the Treasury Directorate), requires prior authorisation for certain foreign investments in protected or strategic sectors and can attach conditions to clearance. Where approval risk or conditional commitments are on the table, contingent consideration lets parties preserve deal certainty while adjusting economics to the eventual regulatory outcome. Sellers often prefer an earn-out to a straight price reduction because it preserves upside; buyers prefer it because it limits exposure until performance is proven.

Deciding between an earn-out and a simple completion-accounts price adjustment turns on a few practical questions. If the disagreement is about the value of a business whose future is uncertain, an earn-out fits. If the disagreement is about the state of the accounts at completion, a locked-box or completion-accounts adjustment is the cleaner tool. Earn-outs in France therefore work best where forward-looking performance, not historical measurement, is the source of the gap.

2.1 Regulatory triggers and investor protections

Where a transaction falls within France’s FDI screening scope, the earn-out timetable should be built around the authorisation process. Contingent payments may be conditioned on the outcome of the review, and information covenants should ensure the seller can monitor performance without breaching any commitments imposed by the authorities. Buyers should confirm that the earn-out structure does not itself constitute a change of control or a fresh reviewable event during the earn-out period, and both sides should map the regulatory calendar against the earn-out measurement windows. The scope of the screening regime is defined in the Code monétaire et financier and its implementing provisions, with practical guidance published by the Ministry for the Economy.

3. Legal characterisation and applicable French law considerations

The starting point for any earn-out in France is that it is a contractual obligation governed by the general law of contract in the Code civil. That framework shapes how obligations are performed, interpreted and enforced, and it imposes overarching duties that cannot be drafted away.

3.1 Earn-outs as contractual obligations vs price adjustment

Under the Code civil, contracts must be negotiated, formed and performed in good faith, a principle of public order that the parties cannot exclude (Article 1104). For earn-outs, this good-faith duty is decisive: a buyer who controls the target during the earn-out period must not act to defeat or diminish the seller’s contingent payment without legitimate business justification. French courts read performance obligations in light of this duty, so a well-drafted clause should anticipate it rather than resist it.

A related question is whether the earn-out is characterised as part of the price or as a separate contractual entitlement. The distinction matters for tax and for how the sums are treated in the sale agreement. Where the earn-out is genuinely part of the consideration for the securities or business sold, it forms part of the price; where it operates as a distinct performance-linked payment, its characterisation may differ. The drafting should be explicit, because ambiguity feeds disputes and unwelcome tax outcomes. Note that under the Code civil the price in a sale must be determined or determinable; a contingent earn-out formula should therefore be drafted so that the ultimate consideration can be objectively calculated.

3.2 Impact on warranties, escrow and completion accounts

An earn-out interacts with the wider deal architecture. Warranty and indemnity claims may be set off against unpaid earn-out instalments, which is why set-off rights must be drafted clearly. Escrow arrangements can secure both indemnity claims and the earn-out itself, and the sale-and-purchase agreement should specify the order in which competing claims bite. Completion accounts, meanwhile, fix the position at closing; the earn-out measures performance after it. Confusing the two produces double-counting or gaps, so the interface between the completion-accounts adjustment and the earn-out baseline should be reconciled expressly. The corporate sale framework and applicable company-law rules sit within the Code de commerce, which governs the transfer of shares and businesses.

4. Drafting an enforceable earn-out clause, buyer & seller checklist

Drafting is where earn-outs in France succeed or fail. A precise clause reduces the scope for opportunistic behaviour and gives a tribunal or court a clear yardstick. The sections below set out the core components, contrasting the buyer’s and seller’s positions.

4.1 Core formula and performance metrics (KPI design)

The earn-out formula is the engine of the clause. It should define, with no residual ambiguity:

• The metric. EBITDA, EBIT, revenue, gross margin or a bespoke KPI. Buyers often favour EBITDA because it captures profitability; sellers frequently prefer revenue because it is harder to depress through cost allocation.
• The accounting basis. The exact standards, policies and conventions used to compute the metric, ideally referenced to a specimen calculation appended to the agreement.
• The target and the payout curve. Whether payment is binary (hit the target or not), linear (proportional to achievement) or tiered.
• The measurement period. One, two or three years, and whether periods are cumulative or standalone.

Sample clause element: “The Earn-Out Amount shall equal [X]% of the amount by which Adjusted EBITDA for the Reference Period exceeds the Threshold, computed in accordance with the Accounting Principles set out in Schedule [ ] and applied on a basis consistent with the Locked-Box Accounts.”

4.2 Calculation mechanics, frequency, reporting & audit rights

Even a perfect formula fails without reliable calculation machinery. The clause should stipulate:

• Who prepares the calculation, usually the buyer, delivering a draft statement within a fixed number of days after period end.
• The review window, a defined period for the seller to object, with a clear consequence if no objection is raised.
• Audit and access rights, the seller’s entitlement to inspect books, working papers and management accounts underlying the calculation.
• An expert-determination fallback, reference of disputed items to an independent accountant whose determination is final and binding on quantum.

Sellers should insist on robust access rights; buyers should confine expert determination to accounting questions and reserve interpretive disputes for the chosen forum. A well-drafted earn-out in France separates arithmetic disputes (for the expert) from legal disputes (for the tribunal or court).

4.3 Governance: management, board observer, information covenants and incentive alignment

Because the buyer controls the target after completion, governance covenants protect the seller’s economic interest. Common protections include:

• Ordinary-course covenants requiring the business to be run consistently with past practice during the earn-out period.
• Ring-fencing of the target’s accounts to prevent cost-shifting that depresses the earn-out metric.
• Board observer or information rights giving the seller visibility over material decisions.
• Retention and incentive arrangements where the seller remains in management, aligning effort with the earn-out outcome.

Buyers, in turn, will want carve-outs preserving their freedom to integrate the business, invest for the long term and respond to market conditions. The drafting challenge is to protect the seller from manipulation without freezing the buyer’s ability to run its own company.

4.4 Protection mechanisms: caps, floors, deadbands, escrow, set-offs

A balanced earn-out uses structural safeguards to contain risk on both sides:

• Caps limit the buyer’s maximum exposure.
• Floors and guaranteed minimums give the seller a baseline recovery.
• Deadbands or catch-up thresholds smooth outcomes around the target level and reduce cliff-edge disputes.
• Escrow secures the earn-out payment against the buyer’s credit risk.
• Set-off rights allow the buyer to net warranty or indemnity claims against unpaid instalments.

Sample clause element: “The aggregate Earn-Out Amount payable under this Agreement shall not exceed EUR [ ] (the Cap) and shall not, if the Threshold is met, be less than EUR [ ] (the Floor).”

4.5 Drafting traps: implied obligations, good faith, earn-out manipulation and post-closing control changes

The most litigated earn-out risk is manipulation. A buyer who diverts revenue, reallocates costs, delays contracts or restructures the target can reduce the metric and cut the payment. French good-faith principles under the Code civil supply a backstop, but litigants prefer express protections to reliance on implied duties. Practical safeguards include:

• Anti-manipulation covenants prohibiting acts whose principal purpose is to reduce the earn-out.
• Accounting-consistency clauses locking the policies used to compute the metric.
• Acceleration triggers that crystallise the earn-out if the buyer sells the target, changes control or ceases the relevant business during the earn-out period.
• Non-frustration undertakings preventing the buyer from taking steps that render the target incapable of hitting the milestones.

Equally, buyers must avoid over-broad covenants that fetter legitimate management. A clause that guarantees the seller a particular outcome regardless of performance defeats the purpose of an earn-out and invites disputes of its own. The goal is a symmetrical clause: the seller is protected from bad-faith reduction, the buyer retains genuine operational freedom, and the good-faith duty enshrined in the Code civil operates as a shared framework rather than a battleground.

5. Tax treatment of earn-outs in France, practical steps for buyers and sellers

The tax treatment of earn-outs in France drives net value on both sides of the table. Characterisation, timing and cross-border withholding can all move the economics materially, so tax analysis belongs in the drafting room, not after signing. The Code général des impôts and the tax administration’s published doctrine (BOFiP) are the governing references, and the applicable regime and rates should always be verified for the relevant year.

5.1 Seller position: capital gain vs ordinary income

For a selling shareholder, the central question is whether earn-out receipts are taxed as part of the capital gain on disposal of the securities or as ordinary income. Where the earn-out is genuinely additional consideration for the shares, it is generally treated as part of the sale price and taxed within the capital-gains regime; the timing of taxation follows the rules for deferred and contingent price elements. Where the payment is instead linked to the seller’s continued employment or services, for example, conditioned on the seller remaining in management, the administration may recharacterise it as employment income, which is typically taxed at higher effective rates and subject to social contributions.

Worked example. Assume a seller disposes of shares for EUR 10 million fixed plus a contingent earn-out of up to EUR 3 million payable over two years on EBITDA targets. If the EUR 3 million is characterised as sale price, it is folded into the capital gain and taxed under the capital-gains regime applicable to the disposal. If, however, the earn-out is conditioned on the seller’s ongoing service and treated as remuneration, the same EUR 3 million may instead be taxed as employment income with social charges, a substantially worse outcome. The lesson is to draft the earn-out as consideration for the securities, decoupled from any service condition, and to document that intention clearly.

The precise regime and rates should be verified against the Code général des impôts and BOFiP for the relevant year.

5.2 Buyer position: deduction and VAT/withholding issues

For the buyer, the earn-out is generally treated as part of the acquisition cost of the shares or business, which affects the basis of the investment rather than producing an immediate deduction. Where instead the payment is characterised as remuneration for services, different deductibility rules may apply. VAT is not usually chargeable on the transfer of shares, but it can arise on the transfer of certain assets, so the earn-out’s VAT position must follow the underlying transaction’s classification under the Code général des impôts and BOFiP guidance. Buyers should also assess whether any withholding obligation attaches to cross-border earn-out payments.

5.3 Cross-border issues: double tax treaties and OECD guidance

In a cross-border earn-out, the seller’s residence and the source of the payment determine which state may tax and whether relief applies under a double tax treaty. The OECD Model Tax Convention and its commentary guide treaty interpretation on capital gains and other income categories, and the OECD transfer-pricing guidelines are relevant where the target transacts with the buyer’s group during the earn-out period. Intra-group pricing that shifts profit away from the French target can reduce the earn-out metric and simultaneously raise transfer-pricing exposure, a double reason to lock accounting policies and apply arm’s-length terms. Parties should map the treaty position and any withholding at the drafting stage rather than discovering it when the first instalment falls due.

A short cross-border tax checklist:

1. Confirm the characterisation of each earn-out payment (price vs income) under the Code général des impôts and BOFiP.
2. Identify the seller’s tax residence and the applicable double tax treaty.
3. Assess withholding obligations on cross-border payments.
4. Review intra-group arrangements affecting the earn-out metric against OECD transfer-pricing principles.
5. Document reporting and filing obligations for each instalment.

6. Enforceability and dispute resolution, arbitration vs French courts

Even the best-drafted earn-out can produce disputes, and the choice of forum shapes cost, speed and enforceability. The right answer depends on the parties’ priorities and the cross-border profile of the deal.

6.1 Arbitration, seat, tribunal powers, expert determination and emergency arbitrator

Arbitration is often preferred in cross-border earn-outs because it delivers confidentiality, a neutral forum and awards that are widely enforceable internationally under the New York Convention. When drafting an arbitration clause, parties should fix the seat, the institutional rules, the language and the number of arbitrators. A layered mechanism works well for earn-outs: accounting disputes go to an independent expert whose determination is binding on quantum, while interpretive and good-faith disputes go to the tribunal. Emergency-arbitrator provisions can provide interim relief before a tribunal is constituted, though the practical enforceability of such measures depends on the seat and the courts asked to assist.

6.2 French courts, remedies, the law of obligations and interim measures

French courts offer strong interim tools, including the référé for urgent provisional measures and the saisie conservatoire to secure assets pending a decision. The general law of obligations in the Code civil supplies the substantive framework, including the good-faith duty that underpins anti-manipulation arguments. Litigation is generally public, which some parties prefer for its deterrent effect and others avoid for confidentiality reasons. Procedural deadlines are formal, and evidence rules are stricter than in arbitration.

6.3 Cross-border enforcement and recognition

Enforceability is often the deciding factor. Arbitral awards benefit from the near-universal recognition regime of the New York Convention, making arbitration attractive where the paying party’s assets sit outside France. Court judgments are recognised abroad according to applicable EU rules (such as the Brussels I Recast Regulation within the EU) or bilateral arrangements, which can be more variable. Both routes carry a residual public-policy (ordre public) risk: an arbitral award may be set aside or refused enforcement on ordre public grounds, and judgments remain subject to appeal and to public-policy review. The Cour de cassation’s jurisprudence on contractual interpretation and enforcement should be monitored, and its decisions and the searchable case-law database on Legifrance are useful references.

7. Valuation, calculation methods and worked examples for earn-outs in France

Valuation method determines how the earn-out behaves in practice. The main approaches are profit-based (EBIT or EBITDA targets), revenue-based, and custom KPI-based, often combined with caps and floors. Each carries a different manipulation risk and a different negotiating dynamic.

7.1 Example A: simple EBITDA-based earn-out

A buyer acquires a French target for EUR 8 million fixed plus an earn-out of 50% of the amount by which Year-1 Adjusted EBITDA exceeds a EUR 2 million threshold, capped at EUR 2 million. If Adjusted EBITDA reaches EUR 5 million, the excess is EUR 3 million; 50% is EUR 1. 5 million, which is below the cap and therefore payable in full. If EBITDA reaches EUR 7 million, the calculated amount (EUR 2. 5 million) exceeds the cap, so the seller receives EUR 2 million. The clause’s value to the buyer lies in the cap; its value to the seller lies in the direct link to profitability.

Both sides depend on tightly defined accounting principles, because “Adjusted EBITDA” is where manipulation risk concentrates.

7.2 Example B: hybrid KPI + revenue threshold

A hybrid earn-out pays EUR 1 million if the target retains three named key customers through Year 2, plus 10% of any revenue above a EUR 12 million threshold, subject to a EUR 1.5 million floor if the customer condition is met. This structure protects a seller whose value rests on client relationships while giving the buyer upside-linked exposure. The customer condition should specify what “retention” means, active contracts, minimum spend or renewal, to avoid definitional disputes. As with Example A, the tax characterisation of each element should be confirmed against the Code général des impôts and BOFiP so the parties understand the net outcome, not just the gross figure.

8. Practical negotiation checklist, due diligence and deal mechanics

Successful earn-outs in France are built during negotiation and diligence, not just drafting. Key focus points include:

• Historic accounting quality. Test the reliability of the metrics on which the earn-out will be measured; unreliable baselines produce disputes.
• KPI achievability. Stress-test targets against realistic scenarios rather than optimistic projections.
• Data-room evidence. Ensure management accounts, customer contracts and cost allocations are documented for later verification.
• Integration plans. Identify integration steps that could distort the earn-out metric and address them in the covenants.
• Employee incentives. Align retention arrangements with the earn-out, but keep service-linked payments separate to protect capital-gains characterisation.

Red flags include vague metric definitions, absence of accounting-consistency clauses, no audit rights, no anti-manipulation protection and no acceleration on change of control. Any of these materially raises dispute risk.

9. Conclusion and next steps

Earn-outs in France remain one of the most powerful, and most litigated, tools in cross-border M&A, and their importance has grown as 2026 FDI screening adds regulatory uncertainty to valuation uncertainty. The difference between a smooth earn-out and a costly dispute lies in precise drafting, deliberate tax characterisation and a considered choice of forum. Define the metric and accounting basis exactly, protect against manipulation through express covenants and good-faith principles, characterise each payment correctly for tax, and choose an enforcement route that matches the parties’ cross-border footprint. For a tailored earn-out clause checklist and bespoke drafting support, engage qualified French cross-border M&A counsel.

Sources

1. Legifrance, Code civil (French Civil Code)
2. Legifrance, Code de commerce (Commercial Code)
3. Legifrance, Code général des impôts (French Tax Code)
4. Legifrance, Code monétaire et financier (FDI screening provisions)
5. BOFiP, DGFiP tax doctrine and guidance
6. impots.gouv.fr, French tax administration
7. Cour de cassation
8. Legifrance, legislation and case-law database
9. Ministry for the Economy and Finance, Control of Foreign Investments (FDI screening)
10. OECD, Model Tax Convention and Commentary
11. OECD, Transfer Pricing Guidelines