Required documents

• What documents do I need for my tax return?

  Here is a non-exhaustive list of documents to prepare in order to correctly complete your tax declaration, along with information on how to obtain them: Regular Income Annual salary certificates Provided directly by your employer, usually in January or February. Certificates of indemnity income (sickness, maternity, unemployment) Available on MyGuichet.lu or can be requested from the CNS, ADEM, or the relevant institution. Pension certificates (CNAP, FNS, etc.)Few readers

• What certificates do I need to be able to deduct interest on my mortgage?

  For your 2024 tax return, you need certificates for the year 2024. These must be issued by the various banks. For banks abroad, you will also need a tax certificate showing the interest paid in 2024. Here are some examples of the certificates you will need: (https://storage.crisp.chat/users/helpdesk/website/1c5fc819171ffd00/snip2024032661w09dqa1kewzzi.png =800x1000) BIL (https://storage.crisp.chat/users/helpdesk/website/-/1/c/5/f/1c5fc819171ffd00/screenshot-2025-06-18-at-154821Few readers

• What certificates do I need to be able to deduct my old-age pension (111bis) ?

  For your 2024 tax return, you need certificates for the year 2024. These must be issued by the various insurance companies and/or banks. Here are some examples of the certificates you will need: !Few readers

• Which certificates do I need to be able to deduct my savings contributions?

  For your 2024 tax return, you will need certificates for the year 2024. These must be issued by the various institutions such as BHW, Schwäbisch Hall or Wüstenrot. Here are some examples of certificates you will need: BHW Schwäbisch Hall Wüstenrot (https://storage.Few readers

• What certificates do I need to be able to deduct my insurances?

  For your 2024 tax return, you need certificates for the year 2024. These must be issued by the various insurance companies. For insurance companies abroad, you will also need a tax certificate. Here are some examples of the certificates you will need: (https://storage.crisp.chat/uFew readers

• What certificates do I need to be able to deduct my household staff costs?

  For your 2023 tax return, you need certificates for the year 2023. These must be issued by the CCSS or by your cleaning company. Here are some examples of the certificates you will need:Few readers

• What document do I need to deduct the notary fees for opening a loan for my main residence?

  You can deduct the notary invoice ‘Ouverture de crédit’ in the year of purchase of your main residence. Here is an example of such an invoice: (https://storage.crisp.chat/users/helpdesk/website/-/1/c/5/f/1c5fc819171ffd00/imageccwp371hnng98.png =600x850)Few readers

• What certificates do I need to be able to deduct my childcare costs?

  For your 2024 tax return, you need certificates for the year 2024. These must be issued by your crèche or day-care centre. Here are some examples of the certificates you will need:Few readers

Document upload

• How can I delete an attachment?

  You can delete attachments in the "Attachments" form.Some readers

• How can I upload my documents in attachments?

  You can upload your documents two different ways: either by using your smartphone and scanning the QR code on the site. or directly from your computer Only photo or PDF formats are accepted.Some readers

• Can copies of certificates also be added as attachments?

  Yes, you can also add copies of certificates as attachments.Some readers

• What to do when this message shows "This content is blocked. Contact the site owner to fix the issue"?

  In case you receive following message in your tax declaration when uploading a file via Auto-Scan or by yourself: If you're using Google Chrome go to: Settings Privacy and Security Site Settings Additional Settings PDF Documents Change setting to open PDFs in Chrome, and not to download PDFs (https://storaFew readers

• Where to upload forms not available on taxx.lu (e.g., form 152)?

  If you need to upload a tax form not available on taxx.lu—such as Form 152 or Form 180—you can easily do so by using the “Attachments” section of your taxx.lu account. This section allows you to upload additional tax documents, forms, and supporting files to ensure your tax return is complete.Few readers

Online certificates retrieval

• Where can I get the deductible special expenses certificates?

  Normally, you will automatically receive the special expenses certificates in January/February. If you have not received your special expenses certificates, please contact your insurance company/bank.Some readers

• How to find Foyer tax certificats?

  Few readers

• How to find Baloise tax certificats?

  Few readers

• How to find Axa tax certificats?

  Few readers

• How do I log in to the Lalux platform?

  Few readers

• How to find Lalux tax certificats?

  To find your Lalux insurance tax certificate, you must first log in to the Lalux platform.Few readers

• How can I access and download my tax documents from the Foyer app?

  Follow our guide step by step!Few readers