Affiliate Programme: Legal Framework and Contracts 2026

Affiliate marketing has established itself as a major growth lever for e-commerce merchants, generating on average 15 to 25% of turnover for high-performing websites. However, behind this commercial opportunity lies a dense legal framework that advertisers must master to avoid administrative sanctions, contractual disputes and reputational damage. Between the Consumer Protection from Unfair Trading Regulations 2008, the UK GDPR, the French Law No. 2023-451 of 9 June 2023 governing commercial influence and the European DSA/DMA directives, legally structuring your affiliate programme has become essential.

Legal Foundations of the Affiliate Contract

The affiliate contract falls primarily under common contract law and is generally qualified as a commercial services provision contract. It must mandatorily specify: the identity of the parties, the nature of products or services promoted, remuneration methods (CPA, CPL, CPC), cookie attribution duration, termination conditions, and clauses relating to intellectual property rights on the marketing materials provided.

Since the Court of Cassation ruling of 20 March 2019, reclassification as an employment contract remains a risk when subordination is established. Advertisers must therefore ensure they preserve the affiliate's independence in choosing their promotional methods, whilst strictly regulating prohibited practices (brand bidding, unauthorised cashback, non-compliant email marketing).

Transparency Obligations and Influence Law 2023

The law of 9 June 2023 has profoundly transformed the affiliate landscape when it involves content creators. All commercial communications must now be clearly identified by the mention "Advertising" or "Commercial Collaboration" in a legible and inseparable manner from the content. Article 5 of this law requires a written contract once remuneration exceeds a threshold set by decree, with mandatory provisions on pain of nullity.

The DSA (Digital Services Act) regulation, applicable since February 2024, also strengthens traceability obligations: affiliate platforms must retain information about professional affiliates and enable their identification. The advertiser remains jointly responsible for the unfair practices of its affiliates under Article L.121-1 of the Consumer Protection Regulations.

GDPR and Affiliate Data Management

Affiliate tracking relies on cookies and identifiers subject to the UK GDPR and the ePrivacy Directive. The ICO guidance of 2020 requires explicit consent to be obtained before placing any non-essential attribution cookie. The contract must clearly designate the roles: the advertiser is generally the data controller, whilst the affiliate platform and the affiliate may be joint controllers or processors depending on the technical configuration.

A GDPR compliance clause is essential, detailing the purposes, retention periods (maximum 13 months for marketing cookies), security measures and procedures in the event of a data breach.

Essential Contractual Clauses to Secure

A robust affiliate contract must integrate: a reasonable non-compete clause, a territorial exclusivity clause if relevant, penalties for fraud (false traffic, unauthorised incentivisation), an audit right for performance, and a clause on competent jurisdiction. The remuneration clause deserves particular attention: precise definition of the trigger event, validation periods (typically 30 to 60 days), billing methods and product return handling.

Conclusion

Legally structuring your affiliate programme is no longer an option but a strategic necessity. A well-drafted contract protects the advertiser against drift, clarifies mutual expectations and facilitates sustainable programme growth. Investing in specialised legal support from the outset avoids costly disputes and strengthens the trust of professional affiliates.