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Proving kinship or partnership

The starting point remains the official record. If that record is missing or cannot be obtained, the administration may examine other evidence, but only within a coherent and readable file. A sworn translation comes in when the documents cannot be used directly by the authority.
Official fees + translation if neededVaries by authorityModerate
Last reviewed: 29 March 2026Editorial review: Equipe CertiDocsOfficial sources: 3
Illustration for the guide Proving kinship or partnership with official documents for Belgium
Illustration for the guide Proving kinship or partnership with official documents for Belgium

Overview

What this guide helps you sort out

The starting point remains the official record. If that record is missing or cannot be obtained, the administration may examine other evidence, but only within a coherent and readable file. A sworn translation comes in when the documents cannot be used directly by the authority.

Steps

4

Documents

5

Official sources

3

What frames this file straight away

Before you even follow the procedure step by step, these are usually the axes that matter.

Related documents

Birth certificate, Marriage certificate, Criminal record extract, Residence permit, Employer certificate

Common translations

Arabic-French, Turkish-French, Romanian-French, Dutch-French

Related cities

Brussels, Liège, Antwerp

What the authority will really test here

In this kind of file, the blockage usually comes from proof, sequencing and consistency, not polished wording.

Records that need to line up

This procedure is usually read through Birth certificate, Marriage certificate, Criminal record extract. Names, dates and references need to stay aligned from one record to the next.

Which official reading matters

Brussels, Liège will compare the source record with Arabic-French, Turkish-French and wants the issuing authority, date and registry references to be easy to spot.

Order of formalities

The 3 official sources mainly help keep the sequence sharp: recent record first, any apostille or legalisation next, then the right filing step.

Which document is expected first?

For a parent, child, spouse or partner, the administration first looks for the corresponding civil-status record. Only where there is a justified absence, impossibility or serious difficulty does it move to other forms of evidence.

What weight do other proofs carry?

Other proofs are not an automatic shortcut. They mainly serve when the official record cannot be obtained. The administration then assesses the coherence of the file as a whole and may request additional material.

Where does the sworn translation fit in?

A sworn translation does not strengthen the evidential value of a document, but it makes the record usable. If the document or its relevant entries are not understandable to the authority, translation becomes unavoidable.

Documents to prepare

  • Birth, marriage or partnership record depending on the relationship invoked
  • Complete, readable and preferably recent copies
  • Apostille or legalisation if the record comes from abroad
  • Sworn translation of records the authority cannot read directly
  • Additional evidence if the official record is missing

Steps to follow

1

Identify the exact relationship

Determine which main record is expected depending on whether the case concerns parentage, marriage or partnership.

2

Obtain the best copy

Prefer a complete, recent and clearly readable copy of the record.

3

Authenticate and translate where needed

Handle any apostille or legalisation first, then the sworn translation needed for the procedure.

4

Add useful supporting material

If the official record is missing, add a clear explanation and the other available elements.

Good to know

Prefer complete and recent copies

An old, short-form or inconsistent copy often triggers a request for additional documents.

Explain differences in names and dates

When several documents do not use exactly the same spelling, it is better to address that upfront with a clear explanation.

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Frequently asked questions

+Is a simple photocopy enough?
In practice, it is better to start from an official, complete and readable copy. A simple photocopy often triggers a request for more documents.
+What if names are not spelled the same way?
You should flag the discrepancy and attach any document that helps connect the different spellings.
+Does a sworn translation replace the official record?
No. The translation makes the record readable, but it does not replace the underlying official record when the administration expects it.
+Can I add other evidence alongside the official record?
Yes, especially if it helps make the file coherent. It is useful, but it does not change the starting hierarchy of evidence.
+Can the administration request extra checks?
Yes. If the file remains incomplete or ambiguous, it may ask for additional material and other verifications.

Official sources

The links below provide the official baseline. They help verify the procedure but do not replace file-specific analysis or the decision of the competent authority.

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