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Maintenance in Luxembourg: calculation, review and recovery

Maître Cora Maglo, Avocate à la CourBy Cerno Law Firm5 July 2026Updated 30 October 20269 min

Quick answer

Maintenance is a sum paid to cover the needs of a relative. In Luxembourg, it mainly takes the form of the contribution to the child's upkeep and the duty of mutual support between spouses. It is set in proportion to resources and needs, under the supervision of the family court judge, and may be reviewed or recovered in the event of non-payment.

In Luxembourg, maintenance refers to several distinct obligations: the contribution to the upkeep and education of the child, the maintenance obligation between parents and children, and the duty of mutual support between spouses. Its amount is determined in proportion to the resources of the person who owes it and the needs of the person who receives it. The family court judge sets, adjusts and reviews the maintenance. In the event of a change of circumstances, a review is possible. Where maintenance is unpaid, several recovery routes exist. A family lawyer provides support at every step.

In short

  • Maintenance covers several obligations: the child's upkeep, the maintenance obligation, the duty of mutual support between spouses.
  • The amount is set in proportion to the resources of the person who owes it and the needs of the person who receives it.
  • The family court judge has jurisdiction to set, adjust and review the maintenance.
  • The contribution to the child's upkeep does not end automatically at the age of majority if the child is pursuing studies.
  • Maintenance may be reviewed in the event of a significant change in the situation of one of the parties.
  • In the event of non-payment, several recovery routes exist, including through the National Solidarity Fund (FNS).
  • It is useful to document your resources, expenses and needs to support an application.
The main forms of maintenance in Luxembourg
Type of obligationWho paysBasis
Contribution to the child's upkeepThe parentDuty of upkeep and education
Maintenance obligationParents or childrenStatutory family solidarity
Duty of mutual support between spousesThe better-off spouseObligations of marriage
Post-divorce maintenanceDepending on the decisionEffects of the divorce once pronounced

Maintenance in Luxembourg: what it covers

Quick answer. Maintenance is a sum of money paid regularly to cover the essential needs of a relative who cannot provide for them alone. In Luxembourg, this term in fact covers several distinct obligations laid down by the Civil Code: the contribution to the upkeep and education of the child, the maintenance obligation between parents and children, and the duty of mutual support (devoir de secours) between spouses.

The principle common to these obligations is simple: the person who has the means contributes, to the extent of their resources, to the needs of the person who depends on them. It is not a penalty, but the expression of a family solidarity that the law organises and the judge enforces.

The most frequent form is the contribution owed by a parent for the upkeep of their child, in particular after a separation or a divorce. But maintenance may also be owed between spouses, or between parents and adult children in certain situations. A family lawyer helps to identify the applicable obligation and to put an estimated figure on it.

The contribution to the upkeep and education of the child

The contribution to the upkeep and education of the child is the most common obligation. Each parent must contribute to the costs relating to the child in proportion to their resources, whether the parents live together or apart. After a separation, this contribution most often takes the form of a monthly maintenance payment made by one parent to the other.

This contribution covers the child's everyday needs: housing, food, clothing, school costs, health, activities. Child custody and the financial contribution are two related but distinct questions: the parent who does not provide the main residence generally contributes by paying maintenance.

An important point: the contribution does not end automatically when the child reaches the age of majority. As long as the adult child is pursuing studies or is unable to provide for their own needs, the obligation may continue. Depending on the case, the maintenance may then be paid directly to the adult child.

The duty of mutual support between spouses

During the marriage, the spouses owe each other support and assistance. The duty of mutual support is an obligation of a material nature: the spouse with greater resources helps the one who has fewer. This duty may take the form of the payment of a sum, in particular when the spouses live apart but are not yet divorced.

This duty of mutual support must be distinguished from post-divorce maintenance, which follows a different logic and applies once the divorce has been pronounced (articles 246 and 247 of the Civil Code). The applicable regime depends on the type of divorce and on the specific situation of the spouses.

The distinction between these different sums is technical and has significant financial consequences. It should be prepared in advance, in particular in the context of a divorce by mutual consent, where the spouses themselves organise the effects of the separation, under the supervision of the judge.

How maintenance is calculated: resources and needs

There is no single automatic formula setting the amount of maintenance in Luxembourg. The law lays down a guiding principle: maintenance is determined in proportion to the resources of the person who owes it and the needs of the person who receives it. It is a case-by-case assessment, left to the judge's analysis.

On the side of the debtor (the person who pays), all resources are taken into account: income from work, rental income or income from assets, but also their unavoidable expenses. On the side of the creditor (the person who receives) or of the child, the actual needs are examined: cost of living, specific costs, state of health, schooling.

Some indicative benchmarks may be in circulation, but they do not replace the judge's assessment and have no binding force. Any estimated figure must be cautious and tailored to the matter. To find out about the procedures and the assistance available, the official resources of Guichet.lu and of the Justice portal are reliable entry points.

The role of the family court judge

The family court judge (juge aux affaires familiales) is the judge with jurisdiction over most maintenance questions in Luxembourg. The judge steps in to set the amount of the contribution or of the maintenance, but also to modify or terminate it when the situation changes.

The judge rules taking into account the interests of the child and the balance between the parties. Matters may be brought before the judge in the context of divorce or separation proceedings, but also outside any divorce, for example for unmarried parents who separate.

The parties may also reach an amicable agreement on the amount of maintenance. A negotiated agreement, in particular through family mediation, is often more lasting than an imposed decision. This agreement may be approved by the judge, which makes it enforceable.

Review of maintenance

Maintenance is never fixed once and for all. It may be reviewed upwards or downwards when the situation of one of the parties changes significantly: loss of employment, a fall or rise in income, new dependants, changes in the child's needs.

A review requires the matter to be brought before the judge again, by demonstrating the change of circumstances. Until a new decision is given, the maintenance previously set remains due in full: you must never unilaterally stop paying, even in the event of difficulties.

Anticipating is therefore essential. As soon as a significant change occurs, it is prudent to consult a family lawyer to assess whether an application for review is advisable and to gather the necessary supporting documents.

Recovery of unpaid maintenance

The non-payment of maintenance is a frequent and trying situation for the creditor, often a parent who bears the child's costs alone. Luxembourg provides several routes for the recovery of unpaid maintenance.

Where maintenance has been set by a court decision, that decision constitutes an enforceable title which makes it possible to take enforcement measures, for example against the debtor's income or accounts, with the assistance of a bailiff. A lawyer specialising in debt recovery can manage these steps.

The National Solidarity Fund (Fonds national de solidarité, FNS) may, on application and subject to conditions, advance the unpaid monthly instalments and recover the maintenance from the debtor (law of 26 July 1980). This requires in particular maintenance set by a court decision that is enforceable in Luxembourg and the failure of a private-law enforcement route. The precise conditions and the steps to take are set out on Guichet.lu. Repeated non-payment may also expose the debtor to prosecution, as family abandonment (abandon de famille) is an offence.

Maintenance and international situations

Where the debtor or the creditor resides abroad, recovery becomes more complicated but remains possible. International and European instruments organise cooperation between States for the recognition and enforcement of judgments relating to maintenance obligations.

Subject to conditions, these mechanisms make it possible to enforce a Luxembourg judgment abroad, or vice versa. They are particularly useful for cross-border workers and for separated couples whose members live in different countries.

These situations often overlap with the issues raised by international divorce. They require a combined analysis of jurisdiction, applicable law and enforcement routes, which the law firm Cerno Law Firm examines in light of each configuration.

Preparing your application with a lawyer

Whether the aim is to set, review or recover maintenance, the preparation of the file is decisive. Supporting documents must be gathered for resources (payslips, tax assessment notices, income from assets), expenses and the needs of the child or the creditor.

A well-documented and consistent file strengthens the position before the judge and facilitates the negotiation of an amicable agreement. Conversely, a poorly substantiated application exposes the applicant to an unfavourable outcome or to additional delays.

Cerno Law Firm's family lawyers provide support with the setting, review and recovery of maintenance in Luxembourg. For an initial assessment of your situation, you can request a quote.

Setting, reviewing or recovering maintenance: the key steps
StepPurposePoint to watch
SettingDetermining the amount according to resources and needsDocument income and expenses
Amicable agreementAgreeing on the amount between the partiesHave it approved by the judge
ReviewAdjusting in the event of a significant changeNever stop paying without a decision
RecoveryObtaining payment of the unpaid sumsEnforceable title and enforcement routes

Depending on your profile

For the creditor parent

If you receive maintenance for your child, be aware that it is set in proportion to the other parent's resources and the child's needs, under the supervision of the family court judge. In the event of non-payment, a court decision constitutes an enforceable title and the National Solidarity Fund (FNS) may, subject to conditions, advance the maintenance and assist with recovery.

For the debtor parent

If you pay maintenance and your situation changes (loss of employment, a fall in income, new dependants), a review is possible by bringing the matter before the judge. Until a new decision is given, the maintenance remains due: never stop paying unilaterally, on pain of recovery proceedings.

For cross-border workers and expatriates

Where one of the parents resides abroad, European and international instruments organise the recognition and enforcement of judgments relating to maintenance obligations. Cross-border recovery remains possible, but requires a combined analysis of jurisdiction, applicable law and enforcement routes.

Official sources

Update history

  • : Distinction between the duty of mutual support, which is material, and the duty of assistance corrected in the FAQ on post-divorce maintenance (articles 246 and 247 of the Civil Code).
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 maintenance in Luxembourg?

It is a sum paid regularly to cover the essential needs of a relative who cannot provide for them alone. It covers several obligations: the contribution to the child's upkeep, the maintenance obligation between parents and children, and the duty of mutual support between spouses, which are laid down by the Civil Code.

How is maintenance calculated in Luxembourg?

There is no single automatic formula. Maintenance is determined in proportion to the resources of the person who owes it and the needs of the person who receives it. It is a case-by-case assessment, left to the family court judge, who examines income, expenses and actual needs.

Who sets the amount of maintenance?

The family court judge has jurisdiction to set, modify or terminate maintenance. The parties may also reach an amicable agreement, for example through family mediation, and have their agreement approved by the judge to make it enforceable.

Does maintenance for a child stop at the age of majority?

No, not automatically. As long as the adult child is pursuing studies or is unable to provide for their own needs, the obligation may continue. Depending on the case, the maintenance may then be paid directly to the adult child.

Can maintenance be reviewed?

Yes. Maintenance may be reviewed upwards or downwards in the event of a significant change in a party's situation: loss of employment, a change in income, new dependants or changes in the child's needs. The matter must be brought before the judge again, by demonstrating this change.

What can be done about unpaid maintenance?

Where the maintenance has been set by a court decision, that decision is an enforceable title allowing enforcement measures with a bailiff. The National Solidarity Fund (FNS) may also, subject to conditions, advance the unpaid monthly instalments and recover the maintenance (law of 26 July 1980). The steps to take are set out on Guichet.lu.

Can maintenance payments be stopped in the event of financial difficulties?

No. Until a new court decision has changed the amount, the maintenance remains due in full. Payments must never be stopped unilaterally, even in the event of difficulties: a review must be requested from the judge, on pain of recovery proceedings.

What is the difference between the duty of mutual support and post-divorce maintenance?

The duty of mutual support applies during the marriage: it is the material obligation by which the better-off spouse helps the other. Post-divorce maintenance applies once the divorce has been pronounced and follows a different logic. The applicable regime depends on the type of divorce and the specific situation.

How can maintenance be recovered when the debtor lives abroad?

European and international instruments organise cooperation between States for the recognition and enforcement of judgments relating to maintenance obligations. A Luxembourg judgment may, subject to conditions, be enforced abroad. These situations require an analysis of jurisdiction and enforcement routes.

Is a lawyer needed for maintenance?

It is not always a legal requirement, but the support of a family lawyer secures the setting, review and recovery of maintenance. The lawyer helps to document resources and needs, to negotiate an agreement or to conduct proceedings. You can request a quote.

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