Proving you are a child's legal parent

Key rules

• Birth certificate: A civil registry birth certificate naming you is the standard proof of legal parentage.
• Unmarried fathers: Cohabitation or a private paper does not prove parentage; you need a recognition before a registry, notary or court, or a court judgment.
• Foreign documents: Foreign documents must be legalised or apostilled and officially translated into Spanish.
• DNA test: A DNA test is requested only when documents are missing, doubtful or inconsistent, and the applicant normally pays.

The birth certificate is your main proof

Legal parentage is shown by a birth certificate that names you as the parent, issued by the civil registry. If it is foreign, it must be legalised or apostilled, and you need an official Spanish translation of it. Check that names, dates and places match across all your civil documents before you submit anything.

If you are an unmarried father

Being named on the birth certificate is the simplest route. If the certificate does not name you, you can prove parentage with a formal recognition of the child (reconocimiento de filiación). You make it before the civil registry, a notary or a court. A court judgment on filiation also works. Living together with the mother or holding a private paper is not enough.

A recognition made abroad must be legalised. The Spanish registry may also need to validate it. The rules of the child's country of birth affect whether the recognition is valid, so ask the office or consulate handling your file before you rely on it.

If only one parent comes, or you are a single parent

When a child comes with one parent, or the other parent lives elsewhere, the file needs one of these:

• a notarised, apostilled or legalised consent from the absent parent;
• a court order or custody ruling giving you sole custody;
• the other parent's death certificate, if they have died.

For adopted children, you add the adoption resolution. The exact documents vary by consulate and by the child's country, so confirm the list with the office that handles your file.

Children over 18 or 21

In the general regime, a child over 18 must also show they cannot provide for themselves. In the EU regime, the same applies to a child over 21. The documents block below lists what to bring.

When a DNA test is requested

A DNA test is not a routine requirement. Offices and consulates can ask for one only when your documents are missing, doubtful or inconsistent, and the relationship cannot be proven another way. This mostly happens when civil records from the country are unreliable. You can also offer a test yourself.

The applicant normally pays, using an accredited laboratory, and the lab and consular costs are on top. This applies to non-EU family reunification. For family members of EU citizens, other proof is usually accepted. Refugee and asylum cases are handled differently. Ask your office or consulate before booking any test.

What to do next

Use the checklist and the decision below to choose between relying on your documents, adding extra proof, or offering a test. If an office doubts a document, see the section on that situation below.

Choosing between options

Should you rely on your documents or offer a DNA test to prove parentage?

• Rely on your documents: Your birth certificate names you and your documents are complete and consistent. No DNA test is needed.

• Add extra proof: The certificate has gaps, for example you are an unmarried father, a single parent, or the other parent lives elsewhere. Add recognition, consent, custody or death certificate papers first.

• Offer or accept a DNA test: Documents are missing, doubtful or inconsistent and nothing else proves the relationship. You normally pay, through an accredited laboratory.

Start with documents. Only when they cannot prove the relationship do offices ask for a DNA test, and you can also volunteer one.

Check with the consulate or office handling your file whether a DNA test is needed and who pays.

Documents you need

• Birth certificate naming you as the parent, issued by the civil registry. If it is foreign, it must be legalised or apostilled and translated into Spanish.

• Official Spanish translation of any foreign document you submit.

• If you are an unmarried father and the birth certificate does not name you: a formal recognition of the child (reconocimiento de filiación) made before the civil registry, a notary or a court, or a court judgment on filiation. A foreign recognition must be legalised and may need validation by the Spanish registry.

• If only one parent comes or the other lives elsewhere: a notarised, apostilled or legalised consent from the absent parent, or a court order giving you sole custody.

• If the other parent has died: their death certificate.

• If the child was adopted: the adoption resolution.

• If the child is over 18 (general regime) or over 21 (EU regime): proof that the child cannot provide for themselves or depends on you.

Checklist

• Check that your documents clearly show the relationship, because a DNA test is only requested when they are missing, doubtful or inconsistent.

• Compare names, dates and places across all your civil documents and fix any inconsistency before you submit.

• Ask the office or consulate handling your file whether it wants a DNA test if you cannot prove the relationship another way.

• Choose an accredited laboratory if a test is requested, and budget for the test and consular costs, which the applicant normally pays.

What if an office doubts a relationship document

What to do if an office doubts a relationship document

Reply to the office's request before the deadline. You normally have 10 working days, and the notice states the exact date. The office usually writes to you with a requerimiento, asking for more proof. If you do not answer in time, it can treat your application as withdrawn and close it, or decide using only what it already has. If you need longer, ask for an extension before the deadline runs out.

Send proof that fits the doubt

Answer the specific point the office raised. Useful evidence for a couple includes:

• joint bills or a shared rental contract
• photos and messages over time
• travel records
• a cohabitation statement
• statements from witnesses who know you both

Send copies, keep proof of when you sent them, and add a short cover note saying which doubt each document answers.

An interview may be part of it

The office can call you and your partner to an interview, held separately or together. This usually happens when something suggests the relationship may not be genuine, such as no shared language, little knowledge of each other's details, no shared home or documents that do not match. Questions cover personal and family details, daily life and how you met. The result is written into a report that can be used if the application is refused. Answer plainly, and make sure your answers match your documents.

DNA tests for parent-child links

A DNA test is not a routine requirement. An office can ask for one when documents are missing, doubtful or inconsistent, for example where civil records are unreliable and the link cannot be shown another way. It is normally done through an accredited laboratory at your expense. You can also offer a test yourself if it would settle the question quickly. Ask the office how it wants the test arranged before you pay for one.

If the application is refused

You have two ways to challenge a refusal:

1. Recurso de reposición. This is optional. You file it with the same office within one month.
2. Court appeal. You go to court within two months of being notified.

If the office never answers, that silence counts as a refusal. The refusal notice states which route and deadline apply to your case, so read it the day it arrives. A lawyer can check that you have the right route. Some decisions made by lower bodies may also allow a separate appeal to a higher body.

Another option is a new application with stronger proof of the relationship, provided the reasons for refusal can be fixed. Compare the cost and timing of an appeal against a fresh filing before you choose.

Frequently asked questions

Who pays for a DNA test in a family reunification file?

In family reunification files, the applicant normally pays for the test and the laboratory or consular costs. The test is done through an accredited laboratory. Refugee and asylum cases are handled differently and may involve public bodies.

What do I need if my child comes to Spain with only one parent?

You need proof of the other parent's consent or of sole custody. That is usually a notarised, apostilled or legalised authorisation from the absent parent, or a court custody ruling. If the other parent has died, a death certificate is accepted. Foreign documents need an official Spanish translation.

What extra proof do I need if my child is over 18 or over 21?

In the general regime, a child over 18 must show they cannot objectively provide for themselves. In the EU regime, a child over 21 must show proof of dependency. In both cases you add this to the birth certificate.