The glossary to understand and take action

Luxembourg Institute of Regulation (ILR)

The ILR carries out regulatory tasks in several sectors, including electronic communications, energy, postal services and certain transport services, as well as cybersecurity responsibilities.

Administration ou organisme professionnel · Luxembourg Fiduciaries Editorial Team · Reviewed on

Understand the scope

Its role for your business

A company must verify the exact scope corresponding to its activity. The obligations of a regulated operator are not those of a mere professional customer of the service.

In your file

When to contact them and what to prepare

Describe the services provided, the infrastructure used and the intended customers before concluding that a declaration or authorisation is necessary. Consult the relevant sector section and forms. Decisions and requirements may evolve; monitoring them must form part of the compliance organisation of the company concerned.

A scenario to help you understand

Educational example

A company plans to offer a communications service and verifies the sector-specific formalities before its commercial launch.

Fictitious situation, presented to illustrate the concept.

Prepare for what comes next

Points to check

  • Identifier le secteur réglementé
  • Distinguer opérateur et utilisateur
  • Consulter les démarches sectorielles

Connecting concepts

Terms to know as well

Continue with the concepts, contacts and procedures related to this topic.

Business permitThe business permit allows the pursuit of activities subject to it, where the conditions relating to the business and its manager are met.GDPR — protection of personal dataThe General Data Protection Regulation governs the processing of personal data within its scope of application.Ministry of the Economy — business proceduresThe Ministry of the Economy is involved in several business procedures, including business permits and various aid schemes. The competent department depends on the exact purpose of the application.Railways Administration (ACF)The ACF operates within the scope of railway safety and regulation in Luxembourg, in accordance with its remit. Companies in the sector must distinguish these obligations from those of an ordinary transport user.Permanent establishmentA permanent establishment is a concept linking an activity to a territory, assessed under the relevant tax framework.Economic substanceEconomic substance refers to the actual elements of organisation, resources and decision-making assessed in the analysis of an activity or structure.

Put it into practice

Explore further with our guides

Practical guideSetting up a business in Luxembourg: assessing the feasibility of the project

Sources and verification

References consulted on 20 September 2026. Official procedures specify the applicable conditions and exceptions.

This guide explains a general process. The applicable rules depend on your situation; it does not constitute personalised advice. Report a correction.

A definition gives you a reference point. To examine your situation, clarify your question with a professional.