Resources,
guides & news

Tax news, practical templates, and answers to your questions to help you anticipate your obligations and make informed decisions.

Tax News

Follow tax developments in Luxembourg and internationally

Our experts decipher the latest reforms and inform you about important deadlines. Stay up-to-date to ensure your compliance.

Guides & Templates

Practical tools for your procedures

Download our checklists, document templates, and deadline calendars to simplify your company’s management.

FAQ: Your questions, our answers

Find clear answers here to our clients’ most frequent questions.

What are the deadlines for filing a tax return in Luxembourg?
The annual tax return must be filed by March 31 of the following year at the latest.
However, an extension may be requested from the tax authorities if necessary.
Our DelaTrust experts assist you in preparing and filing your return to ensure timely submission and compliance of your documents.

To prepare your accounting close, you must provide us with, in particular:

  • The bank statements for the relevant financial year,

  • The purchase and sales invoices,

  • The supporting documents (expense reports, contracts, inventories, etc.),

  • The documents related to fixed assets,

  • The salaries and social contributions,

  • And, if applicable, your tax documents from the previous year.

Our team then proceeds to verify, classify, and analyze all elements to produce complete annual accounts that comply with Luxembourg requirements.

The DelaTrust client portal is directly accessible via our website:
👉 www.delatrust.lu/portal

It allows you to:

  • Securely transmit your accounting and tax documents,

  • Track the progress of your files in real-time,

  • And communicate directly with your dedicated advisor.

For your first connection, our team will send you your personal credentials and guide you step-by-step through activating your account.

Yes, absolutely.
DelaTrust assists its clients with their cross-border tax obligations, whether for:

  • Residents operating in multiple countries,

  • International groups established in Luxembourg,

  • Or foreign investors seeking to optimize their tax structure.

Our international tax specialists advise you on compliance, tax planning, and risk management, taking into account bilateral tax treaties and local regulations.

Didn't find your answer?

Le site web utilise une politique de confidentialité.