Practical guide
How to draft and submit a complaint to the European Commission with AI
4 min read · Updated July 2026 · Editorial oversight: Avv. Federico Papa
A complaint to the European Commission is the mechanism through which citizens and professionals report a Member State's failure to fulfill obligations under the Treaties. This act initiates a preliminary administrative phase (managed via the CHAP system), which precedes the potential opening of the formal pre-litigation phase of the infringement procedure, the latter starting only with the Commission's issuance of a letter of formal notice. This procedure and national judicial remedies operate as independent and concurrent channels, rather than being subsidiary, although both aim to ensure compliance with Union law. The Commission enjoys broad discretion in opening a case, which makes rigorous and well-documented technical drafting crucial.
In brief
Drafting a complaint to the European Commission, assisted by AI, follows Communication 2017/C 18/02 to report a Member State's failure to fulfill Treaty obligations. This act initiates an administrative phase via the CHAP system, preceding the infringement procedure pursuant to Art. 258 TFEU. Complainants must analytically describe national measures, practices, or omissions, specifying violated regulations or directives. The procedure is free of charge and the Commission typically decides within 12 months, inducing legislative changes through the issuance of a letter of formal notice.
The steps
- 1.
Verification of requirements and contested conduct
The lawyer must first ascertain that the contested conduct is attributable to the Member State, including legislative, administrative, or judicial bodies at all levels. Pursuant to Art. 258 TFEU, the infringement may consist of a positive action, such as the enactment of a law contrary to Union law, or an omission, such as the failure to transpose a directive within the prescribed deadlines. It is essential to distinguish between a purely private dispute and a violation of EU obligations, as the Commission intervenes only when the State fails to meet its institutional duties.
- 2.
Use of the Commission's official form
Although there is no formal requirement ad substantiam, the Commission recommends using the official form to facilitate the investigation and correct registration in the CHAP system. The professional must fill in every field accurately, ensuring they provide complete contact details and specify whether they are acting on their own behalf or for a client. A complaint drafted in a free-form format could slow down response times or be archived if essential identifying elements for initiating the procedure are missing.
- 3.
Technical description of the state violation
The section dedicated to the contested measure must analytically describe the national provision, administrative practice, or omission that generates the violation. A copy of the regulatory texts or internal administrative acts must be attached, highlighting the points of friction with the Union legal system. A generic description of state conduct often leads to premature dismissal; therefore, it is necessary to provide concrete documentary evidence of the reported violation.
- 4.
Analysis of the violated EU legal sources
The lawyer must precisely indicate which provisions of the Treaties, regulations, or directives are assumed to be violated by the Member State. A generic reference to the principles of Union law is not sufficient; a logical and legal link between the national norm and the disregarded EU precept is required. The strength of the complaint lies in the ability to demonstrate how the internal norm prevents the useful effect (effet utile) of Union law or blatantly violates its letter.
- 5.
Management of confidentiality and anonymity
Before submission, the complainant must declare whether they intend to maintain anonymity towards the authorities of the Member State concerned during the investigation phases. The Commission generally respects confidentiality, but identification might be necessary to facilitate dialogue with the State or to resolve the specific case. The professional must strategically evaluate this choice based on the nature of the violation and the risk of retaliation or prejudice to the client.
- 6.
Electronic submission and monitoring
The complaint can be submitted online via the dedicated Commission web portal or sent by registered mail to the Brussels headquarters. Once filed, the system assigns an official protocol number that allows monitoring the progress of the investigation and sending documentary additions. It is advisable to keep a copy of all correspondence with the Commission services, as the procedure can last several months before a decision on sending the letter of formal notice is reached.
Legal basis: art. 258 TFUEComunicazione della Commissione 2017/C 18/02
The template structure
The standard sections that make up the document. The full template can be opened and completed directly on edit.legal.
Addressee
Indicates the European Commission as the competent authority to receive the official complaint form for failure to comply with Union law.
Complainant details
Contains the identification of the complainant and the indication of the Member State whose measures or omissions are the subject of the complaint.
Contested measure or practice
Analytically describes the provision, administrative practice, or omission of the Member State considered contrary to Union law.
Statement of facts
Provides a detailed description of the facts and the alleged prejudice, including precise temporal references and authorities involved.
Violated Union provisions
Lists the specific provisions of the Treaties, regulations, or Union directives assumed to be violated by the state conduct.
Steps already taken
Reports any complaints or appeals already submitted to national authorities or other supervisory bodies to resolve the violation.
Request to the Commission
Formulates the formal invitation to the Commission to ascertain the infringement and evaluate the opening of the infringement procedure under Art. 258 TFEU.
Date, signature, and documents
Includes the signature of the complainant and the list of documents supporting the presented legal arguments.
Mistakes to avoid
- Requesting damages: the Commission does not have the power to order the State to provide financial compensation to the complainant.
- Complaining against private parties: the procedure under Art. 258 TFEU exclusively concerns violations attributable to the Member State's authorities.
- Lack of documentary evidence: submitting a complaint based on mere assumptions without attaching national laws or contested administrative acts.
- Failure to reference domestic remedies: not specifying whether national judicial appeals provided by the internal legal system have already been exhausted.
Frequently asked questions
What are the costs for filing a complaint with the Commission?
The complaint procedure is entirely free of charge; there are no court fees or filing taxes for initiating the investigation.
Can the Commission annul a final national judgment?
No, the Commission cannot annul national acts or judgments, but it can induce the State to modify its laws through the infringement procedure.
How long does it take for the Commission to decide on the complaint?
The Commission usually aims to decide within 12 months of registration, although complex cases may require significantly longer timeframes.

What edit.legal automates
- —Automatic selection of references to Communication 2017/C 18/02 and relevant EU legal bases.
- —Guided completion of the official Commission form with verification of mandatory fields and confidentiality clauses.
- —Support in the logical structuring of the statement of facts and the link between national norms and EU violations.
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Try edit.legal for freeThis guide is for informational purposes only and does not constitute legal advice for your specific case.