How to Register at Your Commune in Luxembourg: 2026 Guide

Moving to Luxembourg comes with one deadline that starts the moment you arrive. If you are an EU citizen settling in the country, you have 8 days from arrival to declare your residence at your commune. If you are a third-country national, the window is 3 days.

Until that declaration is filed, you are invisible to Luxembourg's administration: you are not in the national register, your residence paperwork cannot move forward, and banks typically ask for proof of address you cannot yet provide. The good news: registration itself is a short visit, as long as you arrive with the right documents and, crucially, an address you are allowed to register at. This guide covers the deadlines, the documents, where to go, what happens after, and how to avoid the temporary-address trap.

What is commune registration in Luxembourg?

Commune registration is Luxembourg's mandatory address declaration, officially the declaration of arrival (déclaration d'arrivée). Anyone who establishes their usual place of residence in a Luxembourg commune must declare it at the commune's census office (Bureau de la population). The declaration records you in the national register that Luxembourg's administrations work from, and it is the first step of your residence paperwork, whether you are an EU citizen or a third-country national.

How many days do you have to register in Luxembourg?

• EU citizens: within 8 days of arriving in Luxembourg, at the commune where you set up residence.
• Third-country nationals: within 3 days of entering the country. The City of Luxembourg states this as 3 working days; do not count on the difference, go early.
• Moving within Luxembourg later: declare your departure at your current commune no later than the day before you move, then declare your arrival at the new commune within 8 days of occupying the new home.

The deadlines are short because your registered address drives everything else: your registration certificate or residence permit, your tax file, and every official letter that follows.

What documents do you need to register at the commune?

For the declaration itself, guichet.lu lists:

• A valid identity card or passport for each person registering.
• Family documents: the family record book, or marriage or partnership certificates and birth certificates for children.
• For third-country nationals staying more than 3 months: the original authorisation to stay, plus a valid passport with the applicable visa, or a valid residence permit.
• Proof of your usual residence: an agreement from the owner or occupant of the accommodation, an extract from the lease contract, or an extract from the notarial deed of sale.

Note what that last item does not say: you do not need a signed long-term lease. The owner's or occupant's written agreement is officially accepted, and Luxembourg City also takes a recent utility bill (issued within the past 3 months) or a proof of accommodation certificate signed by the owner or the tenant. What you do need is accommodation whose owner will put that confirmation in writing. Not every landlord will, and we come back to that below.

Where do you register?

In Luxembourg City, residence declarations are handled at the Bierger-Center, 44, place Guillaume II, open Monday to Friday from 8:00 to 17:00 (as of July 2026). The city also lets you start some procedures online and book an appointment ahead.

In every other commune, go to the census office (Bureau de la population) of your communal administration. Opening hours vary by commune, so check your commune's website before you go.

What happens after you register?

The declaration of arrival is step one. Here is the paperwork chain it belongs to:

• EU citizens staying more than 3 months: request your registration certificate (attestation d'enregistrement) at the commune within 3 months of arrival. Workers bring an ID and their employment contract; non-workers bring proof of sufficient resources and health insurance. The certificate is issued immediately when you file.
• Third-country nationals: your temporary authorisation to stay must be approved before you travel (applications filed from inside Luxembourg are inadmissible). After arrival and the 3-day declaration come a medical examination and the biometric residence permit application, within 3 months of entry (€80 as of July 2026). Until the permit is issued, the copy of your declaration of arrival together with the authorisation to stay serve as your work permit and proof of legal stay.
• Social security: your employer declares you to the CCSS within 8 days of your first working day, and your social security card is issued automatically.
• Tax card: the tax administration (ACD) issues residents' tax cards automatically after the CCSS affiliation, on average within 30 working days. Until your employer holds your tax card, they are required to withhold at the highest rate: tax class 1, at no less than 33%. The sooner your paperwork is in order, the shorter that phase typically lasts.

Can you register at a temporary address in Luxembourg?

Yes, if the accommodation provider cooperates. The commune needs proof of your usual residence, and the owner or occupant has to confirm in writing that you live there. This is where many new arrivals get stuck: hotels are not set up to be anyone's usual residence, and many short-term rentals are let as holiday accommodation, where the host typically will not sign the paperwork that makes it your registered address.

That creates a circular problem. The long-term rental market moves fast and often asks for local payslips and references you do not have yet, while every week without a registered address leaves your residence paperwork waiting.

StaysCo homes are registration-ready by design. Every StaysCo home is a registerable address: whether you stay three months or a year, we provide the signed municipal forms and the owner's written agreement the commune asks for, so registration typically goes smoothly from day one.

If you are planning the wider move, two companion guides help: the 30-day housing checklist for moving to Luxembourg for work covers the full before-and-after-arrival sequence, and how to rent in Luxembourg explains documents, deposits and notice periods for the long-term search. Comparing options for the first months? See temporary housing vs hotel vs Airbnb in Luxembourg.

Need a registerable address from day one?

The simplest way to beat the 8-day clock (or the 3-day one) is to land somewhere you can register. StaysCo provides furnished, vetted temporary homes across Luxembourg, designed to be registration-ready, from a few weeks to 12+ months.

Start a housing request. One request, vetted options, and the registration paperwork sorted with the home. Or see how temporary housing in Luxembourg works and what it costs first.

Frequently asked questions

Do I need to register if I stay in Luxembourg less than 3 months?

EU citizens have no commune formality for short stays. Third-country nationals must still declare arrival within 3 days of entering the country; if you stay at a hotel, the accommodation form you complete there serves as the declaration of arrival.

What is the deadline to register at the commune?

EU citizens settling in Luxembourg declare within 8 days of arrival. Third-country nationals declare within 3 days of entry. If you later move to another commune, declare your departure no later than the day before the move and register at the new commune within 8 days.

Can I register without a long-term lease?

Yes. The commune accepts other proof of usual residence: a written agreement from the owner or occupant of the accommodation, an extract from a lease, or a notarial deed. Luxembourg City also accepts a recent utility bill or a signed proof of accommodation certificate.

What happens if my employer does not have my tax card?

Your salary is withheld at the highest rate: tax class 1, at no less than 33%. The tax card is issued automatically for residents, on average within 30 working days of your employer registering you with the CCSS.

Is commune registration the same as a residence permit?

No. Commune registration declares your address. EU citizens additionally request a registration certificate at the commune within 3 months of arrival. Third-country nationals apply for a biometric residence permit within 3 months of entry; the permit costs €80 (as of July 2026).

Where do I register in Luxembourg City?

At the Bierger-Center, 44, place Guillaume II, open Monday to Friday from 8:00 to 17:00. Outside the capital, register at the census office (Bureau de la population) of your commune's administration.

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