Reporting mechanisms

Reporting mechanisms are the systems and channels that platforms and publishers must provide to allow individuals, organisations, and authorities to report suspected breaches of transparency and targeting rules for political advertising. These mechanisms must be free, easily accessible, and user-friendly, enabling anyone to flag missing or incorrect labels, unauthorised targeting, or other violations of the regulation.

Legal Basis

"Publishers of political advertising shall provide easily accessible and user-friendly mechanisms to enable any person or entity to report to them potential infringements of this Regulation relating to the labelling of political advertising, the publication of the transparency notice or any other potential infringements of this Regulation."

— Article 18(1), Regulation 2024/900

Why It Matters

Reporting mechanisms are essential for enforcing the TTPA Regulation because they create a direct line between the public and the platforms or publishers disseminating political ads. When citizens, civil society groups, journalists, or competitors spot a political advertisement that lacks proper labelling, missing sponsor information, or appears to violate targeting rules, these mechanisms allow them to act immediately.

Publishers—including online platforms, social networks, influencers, and traditional media—must ensure these reporting channels are easy to find and simple to use. The mechanism should not require technical expertise or registration barriers that discourage reporting. This obligation applies whether the ad appears online or offline, though online platforms face particularly strict scrutiny given the scale and speed at which political advertising can spread.

For national authorities and Digital Services Coordinators, reporting mechanisms serve as an early-warning system. They help regulators identify patterns of non-compliance, launch investigations, and take enforcement action against publishers or sponsors who repeatedly fail to meet their obligations under the regulation.

Key Points

Mandatory for all publishers: Every entity that publishes or disseminates political advertising must provide a reporting mechanism, whether they operate online or offline.
Free and accessible: The mechanism must not charge fees or impose registration requirements that create barriers to reporting.
User-friendly design: The system should be easy to locate on the publisher's interface and simple to use, with clear instructions and minimal steps.
Broad scope of reports: Users can report missing labels, incorrect transparency notices, suspected unlawful targeting, or any other breach of the regulation.
Applies to all media: While most prominent on online platforms, the obligation extends to traditional publishers such as newspapers, broadcasters, and outdoor advertising operators.
Feeds into enforcement: Reports submitted through these mechanisms can trigger investigations by national competent authorities and contribute to regulatory oversight.

Reporting mechanisms vs. Complaints procedures

Reporting mechanisms under the TTPA Regulation are forward-facing tools for the public to flag potential violations directly to publishers. They focus on transparency breaches—such as unlabelled ads or missing sponsor details—and are designed for speed and simplicity. In contrast, complaints procedures are formal processes that allow individuals to escalate concerns to national competent authorities or data protection supervisors when publishers fail to act, when targeting rules are violated, or when personal data is misused. Reporting mechanisms are the first line of defence; complaints procedures are the escalation path when self-regulation fails.

Aspect	Reporting mechanisms	Complaints procedures
Purpose	Flag violations to publishers	Escalate to authorities
User	Any person or entity	Affected individuals, organisations
Scope	Transparency breaches	Targeting, data misuse, non-response
Response	Publisher investigates	Authority investigates

Related Terms

Very transparent. Every political ad will be labelled, linked to a transparency notice with detailed information, and online ads will be searchable in a central European repository.

The Network coordinates election-related cooperation between member states. National contact points for TTPA enforcement should be members of this network where possible.

Election campaigns will need to ensure all paid advertising includes proper labels and transparency notices. Sponsors must be prepared to provide required information to all service providers.

Several major platforms currently do not allow paid political advertising, including some large social networks. This limits where political actors can place paid online advertisements.

The TTPA applies from 10 October 2025. Member States had until 10 April 2025 to designate competent authorities, and the Commission must provide label templates by 10 July 2025.

Publishers must ensure completeness and accuracy of certain information but are not required to verify all sponsor claims. They must correct manifestly erroneous information when they become aware of it.

Yes. When a hosting provider and a website both display an ad, both are considered publishers with responsibility for their specific services. Contracts should clarify how they share compliance duties.

If a publisher removes or disables access to a political ad due to illegality or terms violations, they must still provide access to the transparency information for the full seven-year retention period.