Deadline and late submission

• What is the deadline for sending in my tax return?

  Learn the deadline for submitting your tax return in Luxembourg with our straightforward guide.Featured

• What are the penalties for late filing of your tax return?

  Learn about the penalties for late filing of your tax return in Luxembourg with our clear and concise guide.Popular

• Can I submit my tax return late and/or for previous years?

  Find out if you can submit your tax return late or for previous years in Luxembourg.Few readers

• What is surcharge for late submission of the various returns?

  The surcharge for late submission of various returns is a charge imposed on the taxpayer or tax debtor in the event of non-compliance with tax return submission deadlines. It can amount to up to 10 % of the assessed tax. In the event of a late or inaccurate declaration of 1.000 € or more in terms of withholding tax on savings income, the paying agent incurs an automatic penalty of 0,5 % of the shortfall.Few readers

• What are the various additional charges applied if the declaration and payment deadlines are not met?

  In the event of non-compliance with the deadlines for submitting the various tax returns, the tax office may apply the following additional charges: The surcharge for late submission of the various returns. The penalty payment. The late payment interest. You can click on any of theFew readers

• What is the penalty payment?

  The penalty payment is a financial sanction imposed by the tax office for not submitting tax returns by the due date. The amount of the penalty depends on the severity of the delay and may be set after notification to the taxpayer or the tax debtor.Few readers

Submitting your tax return

• How do I transfer my tax return to myguichet.lu? (Only F100 NOT for F163!)

  Discover how to transfer your Luxembourg tax return to MyGuichet.lu for Form F100 (not for F163) with our step-by-step guide.Featured

• How do I send my tax return in Luxembourg ?

  Learn how to send your tax return to the tax office in Luxembourg with our step-by-step guide.Featured

• Is the tax return automatically sent to the tax office?

  No, unfortunately we cannot send the tax return automatically for you because you have to sign it. You must therefore send it by post or digitally (with an electronic signature on myguichet).Popular

• Which is my tax office?

  Learn how to find your tax office in Luxembourg with our simple guide.Some readers

• How do I send in my tax return (form 100)?

  You have several options. Myguichet : You can file it on myguichet. To do this, log in to your myguichet account and submit your Form 100 and the attachments. You can then sign directly on myguichet. By post : Check your tax return, print and sign it. You can then send the form and your attachments by post to the relevant tax office. The address of the relevant tax office is shown on the form (first page top left) and in the "Result" form on taxx.lu.Few readers

• How do I send in my annual statement (form 163) in Luxembourg ?

  Learn how to submit your annual statement Form 163 in Luxembourg.Few readers

• Do I have to send in my tax return every year ?

  However, a taxpayer who is not legally required to submit a tax return in Luxembourg can choose not to do so from one year to the next. If a taxpayer voluntarily submits a return in a year when they are not required to do so, simply because it is advantageous for them, they are then included in the database of "regular" taxpayers. This database includes all taxpayers, whethFew readers

• How can I print out my tax return?

  Once you have completed your tax return on taxx.lu, you can print it out and send it to your tax office by post. As a first step, it is very important that you open your tax return with Adobe Acrobat Reader. On Mac: Click the printer icon (or cmd-P). Click on "Advanced". Tick the "Print As Image" check box. Click "OK" at the bottom right. On Windows: Press the printer icon (or CTRL-P).Few readers

• Do I need to stamp the tax return sent by mail?

  Yes, you must affix a stamp to your tax return if you send it in paper form.Few readers

Errors and changes after submission

• What should I do if I made a mistake on my tax return after it has been sent to the tax office ?

  If, after submitting your tax return, you realize that you have omitted certain details or declared an incorrect amount, you have the option to contact the tax officer at the tax office you are affiliated with, either by phone or by email, to explain the situation. Please follow this link if you are not sure which tax office you are affiliated with : https://taxx.lu/simulation/bureau-imposition As long as the return has not yet been processed and finalized by the tax office, the officer handliFew readers