Affiliate Program: Legal Framework and Contracts 2026

Affiliate marketing relies on a contract that has no dedicated legal definition. It is a service agreement, often close to business referral arrangements, whose legal regime is inferred from what the parties actually organized — not from the label they gave it. This lack of a dedicated framework is precisely what creates the two main risks: reclassification of the contract, and the advertiser's liability for affiliate practices it does not control.

Classifying the contract

The affiliate contract organizes the provision of a link or promotional material by a publisher, in exchange for compensation tied to results achieved.

Two reclassifications loom, and they have very different consequences:

Commercial agent. This status applies to anyone who negotiates and possibly concludes contracts in the name and on behalf of a principal, on an ongoing basis. It entitles the agent to termination compensation that is often substantial. An affiliate who merely distributes a link does not meet this definition; one who actively solicits identified customers on the advertiser's behalf may come close to it.

Employment contract. It is characterized by a relationship of subordination: precise instructions, control over performance, and sanctions for non-compliance. A program that dictates publication schedules, approves every piece of content, and penalizes deviations creates the hallmarks of subordination.

Prevention comes down to one principle: the affiliate must retain genuine autonomy in organizing its activity. The obligations imposed must relate to compliance with the law and brand image, not to the manner of performance.

What the contract must provide for

Six provisions prevent most disputes:

• The compensation: calculation basis, triggering event, attribution window, and treatment of canceled or refunded orders.
• The attribution period tied to the tracker, along with the applicable rule in the event of multiple sources.
• The affiliate's compliance obligations: advertising transparency, respect for the brand, and express prohibitions.
• The prohibited practices: bidding on the brand name, unsolicited emails, misleading claims.
• The methods for verifying and disputing statistics.
• The term, termination, and treatment of commissions outstanding at termination.

The most commonly overlooked point is the treatment of commissions earned but not yet paid as of the termination date. In the absence of a clause, the discussion proceeds under general law, with an uncertain outcome.

Advertising Transparency: A Mandatory Obligation

This is the area where risk has shifted the most in recent years.

Any content distributed in exchange for a benefit must allow the public to identify its commercial nature. An explicit disclosure, legible and not buried among a list of keywords, is required. Failure to disclose constitutes a misleading commercial practice, which is criminally sanctioned.

The decisive point for an advertiser is that its liability can be engaged for its affiliates' practices, as soon as it profits from them and has the means to oversee them. A contractual clause prohibiting misleading practices is not enough on its own: effective oversight must be demonstrated — content review, a reporting mechanism, exclusion of affiliates in breach.

Claims about products also bind the advertiser in the same way as its own communications, which aligns with the disclosure requirements set out in our guide to launching an online store.

Trackers, Data, and Tax

Affiliate tracking tools fall under the prior consent regime, the same as advertising trackers. They benefit from no exemption on the grounds of their commercial purpose, and placing them before the user has made any choice constitutes a clear violation — a topic covered in our article on cookies and trackers.

This constraint has a direct effect on the model: a user who declines trackers cannot be attributed to an affiliate. The contract must specify how this case is handled, otherwise a dispute over statistics is inevitable.

On the tax front, the affiliate operates as an independent business and invoices with VAT when subject to it. Territoriality rules apply when the parties are established in different states, with reverse-charge VAT for supplies between VAT-registered businesses.

Usage Scenarios

Launching a program. Draft the program terms as a binding contract and have acceptance formally recorded, rather than simply publishing them on a webpage. The acceptance mechanism is the same as for terms and conditions: without proof of acceptance, obligations imposed on affiliates are difficult to enforce.

High-performing affiliate. When the relationship becomes exclusive and the affiliate solicits identified customers, the risk of reclassification as a commercial agent becomes real. A separate, negotiated master agreement is preferable to a poorly adapted standard program.

Disputing statistics. Determine in advance which counting source is authoritative and the deadline for disputes. Without a stipulation, every discrepancy becomes a negotiation.

Frequently Asked Questions

Must an affiliate contract be in writing? No law requires it, but a written agreement is essential: it establishes the compensation, prohibited practices, and treatment of commissions upon termination.

Is the advertiser liable for its affiliates' practices? It can be, as soon as it profits from the distribution and has the means to oversee it. A contractual clause alone is not enough without effective oversight.

Must the commercial nature of content be disclosed? Yes, explicitly and legibly. Otherwise, the content constitutes a misleading commercial practice, which is criminally sanctioned.

Do affiliate trackers require consent? Yes, with no exemption possible on the grounds of their commercial purpose. A user who declines cannot be attributed to an affiliate, which the contract must anticipate.

Can an affiliate be reclassified as an employee? Yes, if a relationship of subordination is established: precise instructions, control over performance, sanctions. Genuine autonomy in organizing the activity is the safeguard.

What happens to commissions upon termination? This depends entirely on the contract. In the absence of a clause, the matter falls under general law and the outcome is uncertain — which is why it should be stipulated.

Key Takeaways

Two risks define this topic, and neither is addressed by a clause alone.

Reclassification is prevented by the reality of the relationship: an affiliate that is autonomous in organizing its activity, overseen for compliance with the law rather than for how it performs its work. A contract that describes an autonomy that practice contradicts offers no protection.

The advertiser's liability for its affiliates' practices is prevented by demonstrable oversight: content review, a reporting mechanism, and effective exclusions. This is what a court examines, far more than clauses prohibiting misleading practices. The reasoning mirrors that applicable to any commercial contract between businesses: what matters is what can be proven, not what was written.