The principle applying
A point established by the sources consulted. VAT registration follows rules specific to foreign providers.
Official sources indicate that a foreign firm providing services in Luxembourg must register for value added tax in order to comply with the tax applying to services.
Services relating to immovable property follow their own place-of-supply rules, which generally attach taxation to where the property is situated.
That attachment explains why working on a Luxembourg site may create Luxembourg tax obligations, even for a firm with no permanent presence.
The precise arrangements depend on the nature of the service and the status of the client, and call for a case-by-case examination.
| Situation | Registration | Invoicing regime |
|---|---|---|
| Foreign provider, immovable works | Under the applicable rules | Reverse charge possible |
| Provider established in Luxembourg | Required | Ordinary regime |
What registration entails
Three practical consequences.
Obtaining an identification number from the competent tax administration.
Periodic filing obligations, whose frequency depends on the applicable regime.
Invoicing obligations meeting Luxembourg requirements.
These obligations continue for as long as the registration is active, including between projects.
A firm that stops working there must therefore address deregistration, rather than leaving the registration dormant.
How it interacts with the housing rate
A point directly concerning construction firms. It concerns the reverse charge applying to immovable works.
A super-reduced rate applies to creation and renovation works on a dwelling used as a main residence, subject to conditions.
Applying it directly presupposes approval obtained before works begin, and it is the professional carrying out the works who applies.
A foreign firm working on a dwelling is therefore concerned by that procedure, on the same footing as an established firm.
That scheme is covered in detail in the guide on housing VAT and support, which sets out its conditions and procedure.
This guide does not repeat them to avoid duplication, but it flags that the foreign firm is subject to them.
The limits of this guide
Three questions call for specialist tax advice. They concern the place of taxation and the thresholds.
Determining the regime applying to a given service, which depends on its nature and its client.
How it interacts with the home country's tax regime, notably as regards invoicing and deduction.
The question of permanent establishment, covered from the tipping-point angle in the corresponding article, which carries consequences for taxation of profits.
This guide provides no rate, threshold or detailed place-of-supply rule, those elements deriving from tax law and evolving.
It flags that the obligation exists and refers readers to the competent administration or to a tax adviser.
What this means for a professional
Four rules.
Address the tax question when preparing the work, not after the first invoice.
Consult a tax adviser established in Luxembourg rather than transposing national practice.
Check the approval procedure for the reduced rate where the work concerns a dwelling.
Address deregistration when activity in Luxembourg ceases, registration carrying filing obligations.
This article reflects the rules at the date of checking and serves professional orientation. It does not constitute tax advice.