Acknowledgement of a Child in the Netherlands

Dutch law distinguishes sharply between a child’s biological parent and its legal parent. Only legal parentage (afstamming) creates the family-law relationship carrying maintenance duties, inheritance rights, surname rules and, since 2023, parental authority. For internationals the Dutch rules are not those of your home country, and a document that works abroad does not always work here.

Who is a legal parent by operation of law

Under art. 1:198 BW the woman who gives birth is the child’s mother, even where the egg came from another woman.

Fatherhood by operation of law is governed by art. 1:199 BW. A man is the legal father if he is married to, or in a registered partnership with, the birth mother at the time of the birth, and also where that relationship ended by his death shortly before the birth, subject to a statutory period expressed in days. Otherwise a man becomes the legal father by acknowledgement, judicial establishment of paternity, or adoption.

• If you are married or in a registered partnership at the birth, no acknowledgement is needed or possible: the spouse or partner is already the legal parent, biological father or not.
• If you cohabit without marriage or registered partnership — a samenlevingscontract is not enough — the mother’s partner is not a legal parent until he acknowledges the child or a court establishes his paternity — the ordinary case in the Netherlands, not the exception.

Acknowledgement (erkenning)

Who may acknowledge, and how

Acknowledgement is a formal declaration making a person a child’s legal parent. Under art. 1:203 BW it is made either by a deed drawn up by a registrar (ambtenaar van de burgerlijke stand) at any Dutch municipality, or by notarial deed.

It is possible before the birth, at registration, or at any time afterwards, including in adulthood. Acknowledgement of an unborn child rests on art. 1:204 BW, read with art. 1:203 BW, which determines which children may be acknowledged at all. Acknowledging before the birth is usually sensible: it settles parentage from day one and avoids difficulties if the father dies or is unavailable at registration.

The acknowledger need not be the biological father, and may be a woman. What art. 1:204 BW forbids is acknowledgement by a person under sixteen, by someone who could not marry the mother because of a prohibited degree of relationship, or of a child who already has two legal parents; such an acknowledgement is void.

Whose consent is required

Consent is where most acknowledgements run into trouble. Under art. 1:204 BW the mother’s prior written consent is required while the child is under sixteen, and the child’s own from twelve. Between twelve and sixteen both must consent; from sixteen the child consents alone. Consent may be given in advance or recorded in the deed itself.

Substitute consent from the court

If the mother refuses, the father is not without a remedy. Under art. 1:204 BW he may ask the district court for substitute consent (vervangende toestemming). It may be granted where the applicant is the child’s biological father, or has a close personal relationship with the child, unless that would harm the mother’s undisturbed relationship with the child or the child’s balanced social, psychological and emotional development. The same article lets a life partner who consented to the act leading to conception seek substitute consent — the route commonly used by a second mother.

The change of 1 January: acknowledgement now gives parental authority

Acknowledgement and parental authority (ouderlijk gezag) are different things. Acknowledgement makes you a legal parent; authority is the right to decide about upbringing, schooling, medical treatment, travel and residence. Historically an unmarried father who acknowledged acquired parentage but not authority, and needed a separate joint request to the authority register (gezagsregister).

That changed on 1 January 2023. Under art. 1:251b BW a person who acknowledges a child now acquires joint parental authority with the mother automatically. It does not arise where:

• the deed records that the mother alone will exercise authority;
• the acknowledgement took place with substitute consent granted by the court;
• a guardian has been appointed over the child;
• nobody currently holds authority over the child;
• authority is exercised jointly with a non-parent;
• the acknowledger already exercised authority over the child.

A father who has litigated for the right to acknowledge does not receive authority with it; he must apply separately under art. 1:253c BW.

Children acknowledged before 1 January

Art. 1:251b BW does not apply to an acknowledgement made before the Act entered into force, and the decisive date is that of the acknowledgement, not the birth. A child acknowledged in December 2022 but born in March 2023 falls under the old regime.

They have no joint authority, however long they have lived together. They can obtain it by a joint request to the authority register, filed online through the courts, free and without a lawyer. If the mother will not cooperate, the father applies under art. 1:253c BW.

Denial of paternity and annulment of an acknowledgement

Denial of paternity (ontkenning)

Where paternity arose by operation of law through marriage or registered partnership, it is undone under art. 1:200 BW on the ground that the man is not the biological father. The father, mother or child may claim, and the limits are short:

• the mother: within one year of the birth;
• the father: within one year of becoming aware that he is probably not the biological father;
• the child: within three years of learning that the man is probably not the biological father, or three years from majority where the child learned this as a minor.

Mother and father are barred where the man knew of the pregnancy before the marriage or registered partnership, or consented to an act that may have resulted in conception — donor conception, for example. That bar does not apply to the father if the mother deceived him about the biological father’s identity. The equivalent claim against a second mother’s motherhood is in art. 1:202a BW.

Annulment of an acknowledgement (vernietiging)

Where parentage arose by acknowledgement, the route is annulment under art. 1:205 BW, again on the ground that the acknowledger is not the biological father. It may be sought by the child, unless the acknowledgement took place after the child reached majority; by the acknowledger or mother, but only where they acted under duress, mistake, deception or abuse of circumstances, or while a minor; and by the public prosecutor where it conflicts with public policy.

The limits follow the grounds: one year from the moment duress or abuse of circumstances ceased; one year from discovery in cases of deception or mistake; and for the child three years from learning the man is probably not the biological father, or three years after majority where the discovery came as a minor. Annulment by a second mother falls under art. 1:205a BW.

An acknowledger who knew the child was not his cannot simply change his mind: regret is not a ground. Once an annulment order is final the acknowledgement is deemed never to have had effect (art. 1:206 BW), though third-party rights acquired in good faith are protected and maintenance already paid is not recoverable.

Judicial establishment of paternity (gerechtelijke vaststelling)

Where a man will not acknowledge the child, paternity can be imposed on him. Under art. 1:207 BW the district court may establish paternity — including after the man’s death — because he is the biological father, or because, as the mother’s life partner, he consented to an act that may have resulted in conception. The mother may apply, unless the child has reached sixteen, as may the child itself.

Paternity cannot be established if the child already has two legal parents, if a marriage between them would have been prohibited, or if the man is a living minor under sixteen. The mother must apply within five years of the birth, or of the day the presumed biological father’s identity and whereabouts became known to her. The child faces no such limit; adults sometimes sue decades later.

The retroactive effect makes the remedy powerful. Once final, the establishment operates retroactively to the birth, so the child is treated as having been the man’s legal child all along, with consequences for inheritance and maintenance. Art. 1:207 BW protects rights acquired in good faith by third parties, and financial advantages need not be repaid so far as the recipient was no longer enriched.

DNA evidence

The ordinary rules of civil procedure apply. DNA testing is decisive in practice, and refusing a court-ordered test can be held against the party refusing. A test bought online will rarely satisfy a court or registrar: what is required is an accredited laboratory, verified identification of those sampled and a proper chain of custody.

Same-sex couples and the position of the duomoeder

Since 2014 a second mother (duomoeder) can become a legal parent without adoption. Under art. 1:198 BW the birth mother’s female spouse or registered partner is the second mother by operation of law where the child was conceived by artificial insemination with an anonymous donor and a declaration from the donor data foundation is produced when the birth is registered. Where the donor is known, or the couple is neither married nor registered, she becomes a legal parent by acknowledgement under art. 1:204 BW instead, including automatic joint authority since 1 January 2023.

If the birth mother refuses consent, the second mother can seek substitute consent as the life partner who consented to the act leading to conception. The Hoge Raad reads this strictly: in its judgment of 2 February 2024 (ECLI:NL:HR:2024:148) it held that such consent concerns the assisted reproduction trajectory as a whole, not merely insemination or embryo transfer, so the partner must have chosen that route jointly with the mother.

For male same-sex couples the position is harder. Only one partner can become a legal parent by acknowledgement, because a child cannot have more than two legal parents; the other is generally restricted to adoption, or to joint authority with a non-parent.

Surrogacy

Because the birth mother is the legal mother under art. 1:198 BW, and her husband or partner the legal father under art. 1:199 BW, intended parents do not become legal parents automatically. Parentage must be transferred afterwards — typically by denial of paternity or annulment, acknowledgement by the intended father, and adoption by the intended mother, with the surrogate’s cooperation throughout.

The Netherlands has no complete statutory framework for surrogacy. Commercial surrogacy and the associated mediation and advertising are prohibited under the criminal law, but the family-law consequences are worked out case by case. A bill, the Wet kind, draagmoederschap en afstamming (file 36390), would introduce a regulated route with advance judicial approval and rules on cross-border cases; submitted in 2023, it is still under consideration in parliament and is not in force.

Cross-border surrogacy is hardest. The legal consequences in the Netherlands of surrogacy carried out abroad — the applicable law, and whether parentage established abroad is recognised here — are worked out case by case, without a statutory framework to fall back on. The Hoge Raad has declined to fill the gap: in its judgment of 13 May 2022 (ECLI:NL:HR:2022:685) it refused to answer the preliminary questions referred by the Rechtbank Den Haag on the parentage consequences of foreign surrogacy arrangements, because the bill on children, surrogacy and parentage was then in preparation and anticipating it would go beyond the law-making role of the courts. Take Dutch advice before conception, not after the birth.

The international dimension

Which law applies, and recognition of foreign parentage

Book 10 BW holds the conflict rules: parentage from birth and marriage in art. 10:92 BW, the law applicable to the creation of family-law relations by acknowledgement in art. 10:95 BW, the law applicable to denial of paternity in art. 10:96 BW, and, in art. 10:97 BW, the exclusive conflict rule for judicial establishment of parenthood. Nationality and habitual residence broadly determine which national law governs, which is why a Dutch registrar may apply foreign law to your acknowledgement.

A final foreign court decision on parentage is recognised here automatically, without a separate exequatur, under art. 10:100 BW. Refusal is possible only on limited grounds: the foreign court manifestly lacked sufficient connection to found jurisdiction; the decision was manifestly not preceded by proper investigation or procedure; recognition would offend Dutch public policy; or the decision is irreconcilable with a final Dutch decision.

Foreign deeds and legal facts — a birth certificate, or an acknowledgement before a foreign authority — fall under art. 10:101 BW, with comparable refusal grounds. Public policy is expressly engaged where a Dutch acknowledger lacked capacity under Dutch law, or consents required by the applicable law were not obtained.

Births abroad and registration in the Netherlands

A foreign birth certificate is not automatically usable here: depending on the country of issue it needs an apostille or full legalisation and a sworn translation. If you live in the Netherlands, register it with your municipality on your return. If you live abroad, it can be entered in the Dutch registers by the Landelijke Taken department of the municipality of The Hague. You cannot acknowledge a child at a Dutch embassy or consulate: acknowledgement must take place in the Netherlands or under the law of the country where you are.

Nationality

Parentage and nationality are linked but not identical. Under art. 4 Rijkswet op het Nederlanderschap a child acknowledged by a Dutch national acquires Dutch nationality by operation of law where the acknowledgement takes place before birth or before the child reaches seven. From seven, nationality follows only if biological paternity is proved by DNA evidence meeting the statutory requirements, which in contested cases must be produced within one year of the acknowledgement. Judicial establishment also confers nationality, and the option procedure of art. 6 RWN may be open to a father who has cared for and brought up the child jointly for three uninterrupted years.

Acknowledging early is simpler and evidentially far less demanding than acknowledging years later.