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Unpaid invoice in Luxembourg: the steps to recover your money

Maître Cora Maglo, Avocate à la CourBy Maître Cora Maglo, Avocate à la Cour28 April 20267 min

Reviewed and approved by a lawyer admitted to the Luxembourg Bar.

Quick answer

In Luxembourg, recovering an unpaid invoice starts with a formal notice. For a certain and undisputed claim, an order for payment or an injunction to pay quickly provides an enforceable title. If the claim is disputed, the court decides on the merits. The title obtained is then enforced by a bailiff (attachment).

Recovering an unpaid invoice in Luxembourg follows a graduated escalation. A formal notice formalises the claim and starts default interest running. If it has no effect, the route depends on whether the claim is disputed: an undisputed claim goes through the order for payment (justice of the peace court) or the injunction to pay (district court); a disputed claim is decided on the merits. The enforceable title obtained is put into effect by a bailiff. For a debtor established in the EU, the European order for payment and the European enforcement order facilitate cross-border recovery.

In short

  • Check that the claim is certain, quantified and due before taking action.
  • Send a formal notice that sets a deadline and starts default interest running.
  • For an undisputed claim: choose the order for payment or the injunction to pay according to the amount.
  • For a disputed claim: bring proceedings on the merits before the competent court.
  • Have the enforceable title enforced by a bailiff (attachment).
  • Debtor in the EU: use the European order for payment and watch the limitation period.
Recovery steps and indicative timescales
StepPurposeIndicative timescale
Formal noticeFormalise the claim, start interest runningA few days to 2 weeks
Order for payment (justice of the peace court)Quick title for a small undisputed claimA few weeks
Injunction to pay (district court)Title for a larger undisputed claimA few weeks to a few months
Proceedings on the meritsJudgment on a disputed claimSeveral months
Enforcement by a bailiffAttachment on the basis of the enforceable titleVaries depending on the debtor's assets
European order for paymentCross-border title within the EUA few weeks to a few months

Start with a formal notice from a lawyer

Before any proceedings, a formal notice from a lawyer puts your claim on record, starts default interest running and signals your resolve. It resolves a significant share of cases without litigation.

The letter sets a clear deadline and announces the next steps in the event of non payment.

The order for payment for undisputed debts

Where the debt is certain and not seriously disputed, the order for payment provides a quick route to obtaining an enforceable title. It is an effective and economical option.

For debtors established abroad, the European order for payment facilitates cross border recovery.

Proceedings on the merits and enforcement

If the debt is disputed, the dispute is decided on the merits. Once the title is obtained, enforced recovery (attachment) is carried out by a bailiff.

Acting early is decisive: an old debt is harder to recover and risks becoming time barred.

Amicable or judicial recovery
CriterionAmicableJudicial
Main toolReminder, formal notice, payment scheduleOrder, injunction, judgment
CostLowProcedural and enforcement costs
SpeedImmediate if the debtor cooperatesA few weeks to several months
Business relationshipPreservedOften broken
OutcomeVoluntary payment or agreementEnforceable title and attachment
When to use itDebtor acting in good faithSilence, dispute or bad faith

Depending on your profile

For SMEs

An SME facing unpaid invoices is well advised to structure its recovery: clear terms and conditions, systematic reminders, a prompt formal notice, then an order for payment or an injunction to pay for undisputed claims. Acting from the first delay protects cash flow and the debtor's solvency.

For the self-employed

For a self-employed person, every unpaid invoice weighs heavily. A formal notice from a lawyer often resolves the matter without a trial. For small amounts, the order for payment before the justice of the peace court provides a quick, inexpensive enforceable title without a complex procedure.

For foreign creditors

A creditor established outside Luxembourg can recover a claim against a Luxembourg debtor by relying on the European instruments: the European order for payment for undisputed claims, followed by local enforcement. Mastery of the rules on jurisdiction and service is decisive.

For e-commerce

An e-commerce business deals with numerous unpaid invoices, often cross-border. Automated reminders, a standard formal notice and use of the European order for payment for customers established in the EU allow a high volume of small claims to be handled efficiently.

Official sources

This article is general information and does not constitute legal advice. For advice tailored to your situation, request a consultation.

FAQ

Frequently asked questions

What is the first step in recovering an unpaid invoice in Luxembourg?

The first step is to send a formal notice. This letter formalises the claim, sets a payment deadline, starts default interest running and announces the legal steps to follow. A significant share of cases is settled at this stage, without proceedings.

Is a formal notice needed before going to court?

A formal notice is strongly recommended and often a useful preliminary. It starts default interest running, shows the creditor's resolve and forms part of the file. In many cases it is enough to obtain payment without a trial.

What is an order for payment?

It is a simplified procedure before the justice of the peace court, reserved for claims of limited amount that are not seriously disputed. On presentation of the documents, the judge may issue an order requiring the debtor to pay, which becomes enforceable if no objection is lodged.

What is an injunction to pay?

The injunction to pay is a fast procedure before the district court for certain and undisputed claims above the justice of the peace threshold. If the debtor lodges no objection, the creditor obtains an enforceable title without a full trial.

What should I do if the debtor disputes the claim?

If the dispute is serious, the injunction procedures are not enough: the dispute is decided on the merits by the competent court, in adversarial proceedings. This route is longer but leads to a full judgment that settles the entire dispute.

What is an enforceable title?

An enforceable title is a document (an order, a judgment, certain deeds) that authorises the use of enforced recovery. Without an enforceable title, no attachment is possible. Obtaining this title is the central aim of the judicial phase of recovery.

How does enforcement by a bailiff work?

On the basis of the enforceable title, the bailiff may serve a demand for payment and then carry out attachments: on bank accounts, on salary or on movable property. The choice of measure depends on the debtor's assets and solvency.

How long does it take to be paid?

The timescale depends on the route chosen. An undisputed order for payment or injunction can succeed within a few weeks. Proceedings on the merits take several months. The enforcement phase comes on top, and its duration varies with the debtor's assets.

From what amount should I take legal action?

A formal notice is useful even for small amounts. For modest claims, the order for payment before the justice of the peace court is suitable. For larger amounts, the injunction to pay or proceedings on the merits become relevant.

What interest can I claim on an unpaid invoice?

An unpaid invoice gives a right to default interest from the formal notice or from the agreed due date. Between businesses, the European framework on late payment also provides for a fixed recovery fee.

How can I recover a claim against a debtor established in the EU?

For an undisputed claim, the European order for payment makes it possible to obtain a decision recognised throughout the Union. The European small claims procedure exists for small amounts. The decision is then enforced in the debtor's country.

What is the European order for payment?

It is a European instrument that allows a creditor to obtain, for an undisputed monetary claim, an enforceable decision recognised in the other Member States. It simplifies cross-border recovery by avoiding having to start a new trial abroad.

What if the debtor is insolvent?

An enforceable title against an insolvent debtor has limited value as long as there are no assets that can be attached. You should assess solvency beforehand, act quickly and, where appropriate, identify assets or watch for a return to better circumstances.

What is the risk if I wait too long?

Waiting increases the risk of the debtor's insolvency and exposes you to limitation, which can extinguish the claim. An old debt is harder to recover. Acting from the first delay, with a reminder and then a formal notice, maximises the chances of payment.

Is amicable recovery preferable to judicial recovery?

Amicable recovery is faster, less costly and preserves the business relationship. It suits a debtor acting in good faith. Judicial recovery becomes necessary in the event of silence, an unfounded dispute or bad faith, since only an enforceable title allows attachment.

Do I need a lawyer to recover an unpaid invoice?

It is not always compulsory, but the support of a lawyer secures the choice of procedure, the calculation of interest, the drafting of the formal notice and the enforcement. A lawyer steers you towards the fastest route depending on the amount and the risk of a dispute.

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