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) They are sent automatically via post or can be requested from the CNS, ADEM, or the relevant institution. **Pension certificates (CNAP, FNSSome 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: ![BIL](https://storage.crisp.chat/users/helpdesk/website/-/1/c/5/f/1c5fc819171ffd00/screenshot-2025-06-18-at-15482_1Few 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: ![Wüstenrot](https://storage.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. ||| Please note. The invoice for ‘sale’ is not deductible. Please check the wording at the top of your document carefully. Here is an example of such an invoice: | In the case of a property loan with Spuerkeess, the opening of the loan is indicated in the ‘Commissions’ secFew 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: ![Foyer](https://storage.crisp.chat/users/helpdesk/website/-/1/c/5/f/1c5fc819171ffd00/foyer-rc-auto_1aq0dFew 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

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

  For your tax return, you need certificates for the fiscal year. 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 declare my unemployment income from ADEM?

  This document is provided directly by ADEM (Agence pour le développement de l'emploi), usually in January or February. It details your income, social security contributions and taxes deducted at source, and is essential for completing your tax return correctly. Here is an example of such a document:Few readers

• What document do I need to declare my salary?

  This document is provided directly by your employer, usually in January or February. It details your income, social security contributions and taxes deducted at source, and is essential for completing your tax return correctly. If you have had several employers during the year, you will need to collect all the relevant certificates.Few readers

• What document do I need to deduct my voluntary social security contributions?

  To be able to deduct your voluntary social security contributions on your tax return, you must attach an official certificate issued by the CCSS. This certificate summarises the amount of contributions actually paid during the tax year.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

• What German certificates do I need to be able to claim tax relief on loan interest?

  For your 2025 tax return, you will need statements for the year 2025. These must be issued by various German banks. Here are some examples of German statements you will need: ![](https://storage.crisp.chat/users/helpdesk/website/-/1/c/5/f/1c5fc819171ffd00/rv_19z5ic6.png =Few readers

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Document upload

• How can I delete an attachment?

  You can delete attachments in the "Attachments" form.Few 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.Few 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: | Please follow this instruction step by step in order to fix that issue: 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

• Can copies of certificates also be added as attachments?

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

• How to find Foyer tax certificates?

  Follow the instructions to access your Foyer tax certificates from: the Client Area the MyFoyer appFew readers

• 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.Few readers

• How do I log in to the Lalux platform?

  ||| To log in to the Lalux user interface, you must first go to the Lalux website and select "Customer area" ||| You will then be taken to a new website where you can either log in or register if you do not yet have an account. (Select easyAPP Home for this)Few readers

• How to find Axa tax certificats?

  | To receive your Axa tax certificates, you must log in to your account on the relevant user portal.Few readers

• How to find Lalux tax certificats?

  To find your Lalux insurance tax certificate, you must first log in to the Lalux platform. ||| Select "Request a document" ||| You will then be taken to the "My insurances" page where you select "Tax certificats" under the "Documents" tab ||| At the end you can now download all your tax certifiFew readers

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

  Follow our guide step by step! | To sign in, click on the box 'Continue with [name]'. | Click on the 'Menu' button in the red circle. | Amongst the listed options, select 'My documents' in the red circle. | CliFew readers

• How to find Baloise tax certificats?

  | To receive your Baloise tax certificates, you must log in to your account on the relevant user portal.Few readers