Luxembourg Family Allowance Form (CAE): Fill Online

What is CAE family allowance application (allocation familiale)?

The 'Demande d'allocation familiale' is the application form of the Caisse pour l'avenir des enfants (CAE, Zukunftskeess) for the Luxembourg family allowance. Guichet.lu explains that each child is entitled, until the end of their schooling (or 25 at the latest), to a monthly allowance from the month of birth and a school-start allowance from age 6. The application can be made online through the MyGuichet.lu assistant, or by post with this paper form.

The form has a column for the applicant and one for the spouse or partner: name, Luxembourg social security number (matricule), nationality, family situation, address, any previous residence outside Luxembourg, activity and employer. Then come the person with custody of the children if the parents are separated or divorced, the bank account for payment, up to six children, and whether family allowances are or were paid for them outside Luxembourg.

FileIt explains each part in English, pre-fills the applicant's details from the People in your FileIt vault, checks the matricule, IBAN, BIC and dates, and prints the answers into the CAE's own PDF, accented and Polish, Romanian or Portuguese letters included. The finished form is saved in your vault, ready to sign and post.

Who fills it: A parent or other person asking for the family allowance, with their spouse or partner
Sent to: Caisse pour l'avenir des enfants, B.P. 394, L-2013 Luxembourg
Online alternative: The MyGuichet.lu assistant
Children: Up to six on one form
Signatures: The applicant and the spouse / partner
Edition: af-fr-14-028-000020-2025-1 (French; a German edition exists)

Who needs to fill out CAE family allowance application (allocation familiale)?

Parents living in Luxembourg asking for the family allowance for their children.
Cross-border workers in Luxembourg whose children live in another country.
Families who have recently moved to Luxembourg.
Non-resident pensioners who previously worked in Luxembourg and receive a Luxembourg pension.
A guardian or relative raising a child, such as a grandparent or an aunt or uncle (the form lists grandchild and niece / nephew as relationships).

When to use CAE family allowance application (allocation familiale)

After a child's birth or adoption, or when a child joins your household.
When you start working in Luxembourg, or move there, and want the allowance for your children.
Each monthly payment lapses one year after the end of the month it is due for (page 4 of the form), so don't wait too long.

What you need before you start

Both parents' or partners' matricule numbers, nationality, family situation and address.
Each one's activity (employee, self-employed, leave, unemployment, pension …) and employer's address.
Any previous country of residence or of work outside Luxembourg, with dates.
The children's names, dates of birth, relationship to you and nationality, and whether they live with you.
The IBAN and BIC of a current or sight account, and a bank identity statement (RIB).
Supporting documents listed on the form: for non-residents a recent certificate of residence or household composition; for non-EU / EEA / Swiss residents proof of the right of residence of every family member; a birth certificate extract for children never claimed for in Luxembourg; for children over 18 in secondary education or an apprenticeship a school certificate; for residents of France who were paid there a certificate from the French fund.

What’s on CAE family allowance application (allocation familiale)

The 2025 edition has 4 pages. FileIt asks for it in 12 parts, and it is signed by Applicant and Spouse / partner:

Applicant (Demandeur / demanderesse)Applicant
Spouse or partner (Conjoint / partenaire)Spouse / partner
Person with custody of the childrenApplicant
Bank details (Coordonnées bancaires)Applicant
Child 1Applicant
Child 2Applicant
Child 3Applicant
Child 4Applicant
Child 5Applicant
Child 6Applicant
Family benefits paid by another bodyApplicant
SigningApplicant

How to fill out CAE family allowance application (allocation familiale), step by step

1 Demandeur / demanderesse and Conjoint / partenaire

One column each: name, matricule (13 digits starting with the date of birth as year, month, day), nationality, family situation with the date it began (depuis le), address and phone number, any previous country of residence with the date you lived there until (jusqu'au), activity, and employer. Tick the boxes that match your situation.

2 Custody of the children

If you are separated or divorced, give the name and address of the person who has custody of the children.

3 Coordonnées bancaires — bank details

Whose account the allowance goes to (Madame or Monsieur) and the holder's name, the IBAN, the BIC and the bank's name. The form says the account is used for all family benefits; attach a RIB (copies of bank cards aren't accepted). Payments can only go to a current or sight account.

4 Enfants — the children

For up to six children: name, date of birth (year, month, day), relationship (biological child, adopted child, spouse's child, grandchild, niece / nephew …), nationality, whether the child lives in your household and, if so, since when.

5 Prestations familiales versées par un autre organisme — benefits from another body

Whether the children receive or have received family allowances outside Luxembourg. If so: the body that pays or paid them, its address and country, the person who receives or received them, the reference number, whether payment is still running and, if not, until when.

6 Signatures

Place and date, then the signatures of the applicant and of the spouse / partner. The form recalls that fraudulently obtaining benefits is punishable under article 312 of the Social Security Code and article 496 of the Penal Code.

Common mistakes to avoid

Leaving out the RIB, or sending a copy of a bank card instead.
Giving a savings account: the allowance is paid only to a current or sight account.
Not saying that family allowances are already paid abroad for the children.
Forgetting the certificate of residence or household composition as a cross-border worker.
Only one partner signing.
Not telling the CAE later about a change, such as a separation, a move abroad or a child starting work; page 3 lists what to report.

After you fill it out

Print the finished PDF from your FileIt vault. The applicant and the spouse / partner sign on page 2, by hand or through FileIt's eSignature.

Post it with the supporting documents to the Caisse pour l'avenir des enfants, B.P. 394, L-2013 Luxembourg. FileIt does not submit anything for you. The CAE can ask for more documents, which can be sent by post or through MyGuichet.lu.

Keep the filled copy in your FileIt vault, with each child's documents, and keep pages 3 and 4 of the form: they list the changes you must report to the CAE.

Fill out CAE family allowance application (allocation familiale) online with FileIt

Pick the person. Choose someone from People and FileIt fills in their name, date of birth, address and other details it already knows.
Answer plain-language questions. One part of the form at a time, with the official help text beside each question — 107 fields in all. Your answers save as you go.
Check the live preview. Watch your answers land on the real Caisse pour l'avenir des enfants (CAE) — Zukunftskeess form, and let FileIt do any worksheet arithmetic.
Generate the official PDF. FileIt prints your answers into the agency’s own PDF and files it in that person’s folder in your vault. Sign it, or send it for e-signature.

FileIt fills the form — it never files or submits anything for you. Deliver the finished form to whoever asked for it, the way the form’s instructions say.

Start CAE family allowance application (allocation familiale) now — it’s free

CAE family allowance application (allocation familiale): frequently asked questions

Can I fill in the Luxembourg family allowance form online?

Yes. FileIt lets you fill in the CAE's demande d'allocation familiale online for free and prints your answers into the official PDF, ready to sign and post. The CAE also has its own online assistant on MyGuichet.lu.

Where do I send the demande d'allocation familiale?

To the Caisse pour l'avenir des enfants, B.P. 394, L-2013 Luxembourg, the postal address printed on the form.

Until what age is the family allowance paid?

Page 3 of the form says it is due from the month of birth until 18, and continues until 25 at the latest for a child in secondary or technical studies, an apprenticeship, or adapted training in a specialised establishment.

Can cross-border workers get the Luxembourg family allowance?

Yes. For children raised outside Luxembourg, the form says the right comes from a job in Luxembourg; when there is also an activity in the children's country of residence, that country pays first.

What is the numéro matricule?

Your 13-digit Luxembourg social security number. It starts with your date of birth as year, month and day.

Which bank documents do I need?

A relevé d'identité bancaire (RIB) from the bank showing the account holder, the IBAN and the BIC. Copies of bank cards aren't accepted.

Is there a German version?

Yes. Guichet.lu links a German edition as well. FileIt uses the French one.

Official sources

Blank form (PDF), published by Caisse pour l'avenir des enfants (CAE) — Zukunftskeess: https://cae.public.lu/dam-assets/fr/formulaires/interactifs_nouveaux/af-fr-14-028-000020-2025-1.pdf
Official instructions and guidance: https://guichet.public.lu/fr/citoyens/aides/famille-education/allocations-naissance/allocations-familiales.html
Edition shown on this page: af-fr-14-028-000020-2025-1 (footer 028-000020-20040525-FR V1.4, PDF of September 2025) (checked 2026-10-25).

FileIt is not affiliated with or endorsed by Caisse pour l'avenir des enfants (CAE) — Zukunftskeess or any government. This page explains the form in general terms and is not legal, tax or immigration advice. Always read the official instructions, and check that you are using the edition the recipient accepts. Page last reviewed 2026-10-25.