In this article
What the declaration of arrival is
The déclaration d'arrivée registers your usual place of residence with the population office of your commune. In Luxembourg City this is handled by the Ville de Luxembourg's population service; in smaller communes it is the maison communale or Biergeramt.
It is worth being clear about what it is not. This is not a residence permit and not a visa. It is the civil registration that places you on the population register, and it is a legal obligation for anyone taking up residence in the country, whatever their nationality or immigration status.
Its practical importance is disproportionate to how simple it is. The registration produces your national identifier, the matricule, which is built from your date of birth plus additional digits and which follows you through every subsequent interaction with a Luxembourg institution.
The deadlines, which depend on your nationality
| Situation | Deadline to declare arrival |
|---|---|
| EU, EEA and Swiss nationals | Within 8 days of arriving |
| Third-country nationals | Within 3 working days of arriving |
| Moving to a new address inside Luxembourg | Within 8 days of occupying the new home |
The third-country deadline is genuinely short, and it is the one people most often miss because they assume the first week is for settling in. If you fall into that category, treat the commune appointment as the first item on your calendar rather than something to fit around unpacking.
Many communes let you book the appointment online in advance. Do it before you fly, for a slot in your first few days. It is the single most useful piece of pre-arrival admin.
What to bring
You must attend in person, or send a formally authorised representative. The core list:
- A valid national identity card or passport
- For third-country nationals, as applicable: the temporary authorisation to stay issued before arrival, an entry visa, or a residence permit or residence card issued by another EU member state
- Proof of your usual place of residence at the address you are declaring
If you have never been registered in Luxembourg before, it is strongly recommended to bring documents evidencing your family situation: a marriage certificate, birth certificates for children, or a divorce certificate where relevant. Producing them now avoids a second appointment later, particularly if you will be claiming family-related benefits.
Documents that are not in French, German or English must be accompanied by a certified translation from a sworn translator. Arranging this from abroad is usually faster and cheaper than arranging it after you land.
Proving where you live
This is the step that catches out people who have just moved into a room or a shared flat, because the utility bills are rarely in their name.
Accepted proof typically includes a recent electricity or water bill issued within the past three months, a recent landline telephone bill, or another document issued by a public administration establishing your address. Where you cannot provide any of these, a proof of accommodation certificate completed and signed by the owner or the tenant of the property is the standard alternative.
That last point matters if you are renting a room. Ask your landlord or agency for the signed accommodation certificate at the same time as you collect the keys, not a week later when you are already at the commune counter. For the rooms we manage, we provide it as part of the move-in, precisely because it is the step that otherwise stalls everything else.
What happens next
Once you are registered, several things follow, some automatically.
- You receive your matricule, the identifier used across the administration.
- Ask for a certificate of residence while you are there. Banks, employers and various services request it, and having a copy in hand saves a return trip.
- Your employer registers you for health insurance, and social security registration follows from your employment declaration.
- You can now open a Luxembourg bank account, which in turn unlocks a local mobile contract and, where relevant, a bank guarantee for your rental deposit.
The dependency chain is the thing to internalise: address, then commune registration, then bank account, then everything else. Each step needs the one before it, which is why securing an address quickly matters so much. It is also the strongest practical argument for starting in a furnished room rather than waiting for the right apartment, a point we develop in our guide to renting a room step by step.
The second step: the registration certificate
For EU, EEA and Swiss nationals staying longer than three months, the declaration of arrival is followed by a second formality: the déclaration d'enregistrement, or registration certificate, to be completed within three months of arriving. It is done at the communal administration of your place of residence, and can often be handled at the same counter.
In addition to your identity and family documents, you will normally need to present your employment contract, since the certificate confirms the basis on which you are exercising your right of residence. Third-country nationals follow a different route, generally centred on a residence permit rather than this certificate.
If you move again inside Luxembourg
Any change of usual residence within the country must be declared to your new commune within eight days of moving in. You do not need to deregister from the old one: the new commune handles the transfer between registers.
Some communes accept this online through MyGuichet.lu, though the procedure varies, so check what your commune offers before making the trip. If you are moving between neighbourhoods within Luxembourg City, the change of address is registered with the same population office.
Getting the sequence right
None of these steps is difficult. What causes problems is doing them in the wrong order, or discovering on day six that you cannot prove your address. Secure the accommodation and the proof of address first, book the commune appointment before you arrive, and bring translated documents with you.
For official procedures, current forms and the details that apply to your specific nationality, guichet.lu and your commune's own site are the authoritative sources. If you are still looking for the address that starts the whole chain, our available rooms list price, deposit and availability date on every listing, or you can simply tell us what you need.
