The glossary to understand and take action

Corporate taxation

Corporate taxation encompasses the taxation and filing rules applicable to a company and its transactions.

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

Understand the scope

Definition and points to distinguish

Profits, assets, VAT, remuneration and distributions may be subject to different mechanisms. The company's taxation must also be distinguished from that of its shareholders.

In your file

What this changes in practice

A company's tax management is based on several areas: profits, assets, VAT and, where applicable, withholding taxes on remuneration or distributions. Each tax has its own rules, period and evidence. A shared calendar with the firm facilitates approvals and payments. Unusual transactions, such as an acquisition, related-party financing or a distribution, benefit from being reviewed before they are carried out. The shareholder's tax remains a separate matter.

A scenario to help you understand

Educational example

A company makes a profit and considers distributing it. It first reviews its results and legal position, then the treatment of the distribution and any withholding taxes, without treating the company's tax as the shareholder's tax.

Fictitious situation, presented to illustrate the concept.

Prepare for what comes next

Points to check

  • Cartographier les impôts concernés
  • Identifier les opérations exceptionnelles
  • Organiser validations, dépôts et paiements

The practical question

Find out more

Pourquoi distinguer chaque impôt dans le suivi de la société ?

Les bases, déclarations et échéances peuvent différer. Une opération peut avoir des effets en impôts directs, TVA ou retenues sans produire les mêmes conséquences partout. Un calendrier par obligation et un rapprochement des paiements évitent de considérer qu’un seul dépôt couvre tout. La comptabilité fournit des données, mais le traitement fiscal demande ses propres ajustements.

Connecting concepts

Terms to know as well

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

Corporate income tax (IRC)The term corporate tax commonly refers to the taxation of companies’ profits; in Luxembourg, IRC is one of the taxes to be distinguished.Municipal business taxMunicipal business tax (ICC) is a direct tax linked to commercial profit, the calculation of which notably takes account of a municipal rate.Net wealth taxNet wealth tax concerns the taxable assets of entities falling within its scope, in accordance with the applicable valuation and exemption rules.DividendA dividend is a distribution decided for the benefit of partners or shareholders under the conditions applicable to the company.Tax supportTax support organises the monitoring of obligations and analysis of the company's tax issues in accordance with the agreed engagement.ATAD DirectivesThe ATAD Directives constitute a European framework of measures against certain tax avoidance practices, transposed into national legislation.

Put it into practice

Explore further with our guides

Practical guideCorporate tax return: prepare the documents and monitor filing

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.