Luxembourg Civil Code & CAE Statutory Framework 2026 Code Civil Art 203 • STATEC Indexation • CAE Allocations Scheme: Luxembourg Family Court (Juge des Tutelles)

CSA Calculator Luxembourg

Calculate child maintenance in Luxembourg in seconds. Official STATEC indexation, income rules & CAE family benefits. Check your payment free now!

In the Grand Duchy of Luxembourg, child maintenance (pension alimentaire pour enfant) reflects high average salaries, significant state family allowances paid by the Caisse pour l'avenir des enfants (CAE), and mandatory bi-annual cost-of-living adjustments tied to the STATEC sliding wage scale.

Luxembourg Family Jurisdiction

Luxembourg Child Maintenance & STATEC Index Calculator

Evaluates Luxembourg net monthly salaries, CAE family allowance offsets, and STATEC indexing

Tribunal d'Arrondissement

Paying Parent Net Income (€/month) Net monthly earnings in Luxembourg

Receiving Parent Net Income (€/month) Net income of primary carer

Number of Children CAE registered children

Tribunal d'Arrondissement Estimate Art 203 Civil Code

Child Estimated Cost

€960.00

Luxembourg Standard

CAE Allowance Offset

-€299.86

State Paid Benefit

Monthly Pension Due

€396.08

Indexed Monthly

Max Tax Deduction

€4,420 / yr

Lux Tax Code Art 109bis

Legal Cost-of-Living Protection

Mandatory STATEC Sliding Scale Indexation (Indexation Automatique)

STATEC Index

Automatic +2.5% Triggers

In Luxembourg, every family court judgment includes an automatic indexation clause. Whenever the national consumer price index rises by 2.5%, child maintenance automatically jumps by 2.5% without returning to court.

Tax Deductibility (Article 109bis LIR)

Paying parents resident in Luxembourg can deduct up to a maximum statutory cap of €4,420 per child per year from their taxable income as special expenses (dépenses spéciales).

Parental Obligations Under the Luxembourg Civil Code

Under Article 203 of the Luxembourg Civil Code, spouses contract an obligation by marriage to feed, maintain, and educate their children. Following separation or divorce, this maintenance obligation continues under Article 303 in proportion to the respective earnings and assets of both parents.

Role of the CAE (Caisse pour l'Avenir des Enfants)

Luxembourg pays one of the highest universal child allowances in Europe through the Caisse pour l'avenir des enfants (CAE)—approximately €299.86 per child per month (indexed). In child maintenance proceedings, judges systematically account for this allowance, deducting it from the child's gross budget before apportioning remaining costs between the parents.

Cross-Border Commuters (Frontaliers) and Enforcement

Over 45% of Luxembourg's workforce consists of cross-border commuters living in France, Belgium, or Germany. If a frontalier fails to pay child maintenance ordered by a foreign or Luxembourg court, the creditor can execute an attachment of wages (saisie sur salaire) directly through the Luxembourg Justice de Paix.

Legal Clarifications

Frequently Asked Questions: CSA Calculator Luxembourg

Authoritative answers based on current statutory rules and legal precedents

Do I have to return to court in Luxembourg to increase child maintenance for inflation? ↓

No. Luxembourg court judgments include an automatic indexation clause tied to the STATEC sliding wage scale. Whenever the index increases by 2.5%, maintenance increases proportionately.

What is the maximum tax deduction for child maintenance in Luxembourg? ↓

Under Article 109bis of the Luxembourg Income Tax Law (LIR), the maximum annual tax deduction for child maintenance is €4,420 per child.

Can the Luxembourg family court order maintenance for university studies? ↓

Yes. Maintenance continues past age 18 if the child is enrolled in higher education and making normal academic progress, typically until the completion of a first Master's degree.

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