The glossary to understand and take action

Administrative support

Administrative support helps prepare and follow up on procedures, documents and deadlines within an agreed scope.

Notion comptable, fiscale ou juridique · Luxembourg Fiduciaries Editorial Team · Reviewed on

Understand the scope

Definition and points to distinguish

The service provider does not automatically have the authority to decide or sign on behalf of the company. Define the mandates, approvals and expected evidence of completion.

In your file

What this changes in practice

Administrative support helps gather, check and track the information required for procedures. It may include preparing forms, filing documents and communicating with an authority, according to the agreed mandate. It does not automatically transfer signing authority or responsibility for decisions. Effective follow-up identifies, for each procedure, its recipient, status, missing documents and proof of submission.

A scenario to help you understand

Educational example

A service provider prepares an application in the company's professional space. The manager checks who may approve and submit it, then retains the acknowledgement rather than treating the draft as a filing.

Fictitious situation, presented to illustrate the concept.

Prepare for what comes next

Points to check

  • Définir le mandat et les accès
  • Suivre chaque dossier et pièce manquante
  • Conserver les preuves de transmission

The practical question

Find out more

Que peut-on déléguer sans perdre le suivi du dossier ?

La préparation et certaines transmissions peuvent être confiées à un mandataire selon les règles de la démarche. Précisez les pouvoirs, les validations et le destinataire des messages. Conservez un accès aux pièces et preuves de dépôt. La délégation ne doit pas créer une zone où chacun suppose que l’autre répondra à une demande de complément ou surveillera l’échéance.

Connecting concepts

Terms to know as well

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

MyGuichet.luMyGuichet.lu is the electronic administrative procedures platform that enables available procedures to be completed in a personal or professional space.MyGuichet.lu professional spaceA collaborative space enabling a company, self-employed person or association to manage certain administrative procedures and information.Engagement letterThe engagement letter formalises the services agreed between a professional and their client, together with the conditions for their performance.Fiduciary firmA fiduciary firm is a service provider offering, depending on its organisation and authorisations, accounting, tax, administrative or corporate services.Chartered accountantThe chartered accountant practises a regulated profession, with assignments relating in particular to accounting and advisory services within the authorised framework.Institut des réviseurs d’entreprises (IRE)The Institut des réviseurs d’entreprises (IRE) is the professional body for statutory auditors in Luxembourg.

Put it into practice

Explore further with our guides

Practical guideWhat does a fiduciary firm do? Define the services and engagement letter

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.