The glossary to understand and take action

Institut des réviseurs d’entreprises (IRE)

The Institut des réviseurs d’entreprises (IRE) is the professional body for statutory auditors in Luxembourg.

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

Understand the scope

Its role for your business

The title, any authorisation and the nature of the engagement must be distinguished. An internal accounting review does not become a statutory audit merely by virtue of its name.

In your file

When to contact them and what to prepare

The IRE is the professional body for statutory auditors in Luxembourg. A distinction should be made between the institute, the profession and the public oversight powers exercised by the competent authorities. A statutory audit engagement is not the same as bookkeeping or a simple management review. The choice of practitioner must match the required engagement and their authorisation.

A scenario to help you understand

Educational example

A company subject to a statutory audit verifies the practitioner's qualification and the scope of the engagement, rather than requesting only an annual accounting service.

Fictitious situation, presented to illustrate the concept.

Prepare for what comes next

Points to check

  • Qualifier la mission attendue
  • Vérifier l’habilitation du professionnel
  • Distinguer audit et tenue comptable

The practical question

Find out more

Quel document attendre d’une mission de révision ou d’audit ?

Le livrable dépend de la mission et du cadre légal ou contractuel. Faites préciser sa nature, son destinataire et les travaux prévus. Un rapport d’audit légal ne se confond pas avec une note d’observations ou des comptes préparés par un cabinet. Le choix du professionnel doit donc partir du besoin réel, pas seulement d’un intitulé général.

Connecting concepts

Terms to know as well

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

Accounting reviewAccounting review consists of all checks aimed at examining the consistency and supporting evidence of the prepared accounts.Chartered accountantThe chartered accountant practises a regulated profession, with assignments relating in particular to accounting and advisory services within the authorised framework.CSSFThe Commission de surveillance du secteur financier (CSSF) is a Luxembourg supervisory authority within the scope assigned to it by law.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.DomiciliationCompany domiciliation organises, in situations provided for by law, the establishment of a registered office with an authorised third party and the agreed services.

Put it into practice

Explore further with our guides

Practical guideWhat does a fiduciary firm do? Define the services and engagement letterPractical guideInvestment funds: understanding the roles before choosing a service providerPractical guideChartered accountant in Luxembourg: roles and status verification

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.