If you are not married to or in a registered partnership with the mother, you only become your child’s legal parent in the Netherlands by acknowledgement (erkenning) at the municipality or a notary, with the mother’s written consent while the child is under 16 (Articles 1:203 and 1:204 of the Dutch Civil Code, BW). Since 1 January 2023 an acknowledgement also gives you joint parental authority automatically, unless the mother and you declare otherwise or the court had to replace the mother’s consent (Article 1:251b BW).
Legal parentage (afstamming) is what creates maintenance duties, inheritance rights and surname rules. Below we explain who is a parent by law, how acknowledgement works, how it can be undone, and what changes in international and same-sex families.
Table of contents
Who is a legal parent by operation of law?
The woman who gives birth is always the legal mother (Article 1:198 BW). Her husband or registered partner at the time of birth is the legal father by operation of law (Article 1:199 BW), also if the marriage or partnership ended by his death within 306 days before the birth.
- If you are married to or in a registered partnership with the mother at the birth, you are already the legal parent; acknowledgement is neither needed nor possible.
- If you live together without marriage or registered partnership, a cohabitation agreement (samenlevingscontract) is not enough: the partner becomes a legal parent only by acknowledgement or a court decision.
How does acknowledgement work?
Acknowledgement is a formal declaration that makes you the child’s legal parent. Under Article 1:203 BW it is made by a deed drawn up by a registrar (ambtenaar van de burgerlijke stand) at any Dutch municipality, or by a notarial deed, and it takes effect from the moment it is made.
You can acknowledge before the birth, at the registration of the birth or at any time afterwards. Acknowledging before the birth settles parentage from day one and avoids problems if the father dies or cannot attend the registration. The person acknowledging does not have to be the biological father and can also be a woman.
When is an acknowledgement void?
Under Article 1:204(1) BW an acknowledgement is void if it is made by a person under 16, by someone who may not marry the mother because they are closely related, or while the child already has two legal parents. It is also void without the required prior written consent.
Whose consent is needed?
The mother must give prior written consent while the child is under 16, and the child itself from the age of 12 (Article 1:204(1) BW). Between 12 and 16 both must consent; from 16 only the child. Consent can also be given in the deed of acknowledgement itself.
What if the mother refuses consent?
You can ask the district court (rechtbank) for substitute consent (vervangende toestemming) under Article 1:204(3) BW if you are the begetter of the child, or the biological father with a close personal relationship with the child. The court grants it unless it would harm the mother’s undisturbed relationship with the child or the child’s balanced development.
A life partner of the mother who consented to the act that may have led to conception, such as a second mother, can also ask for substitute consent; the court then grants it if this is in the child’s interest (Article 1:204(4) BW). The Hoge Raad held that this consent must concern the whole fertility treatment, chosen together with the mother (HR 2 February 2024, ECLI:NL:HR:2024:148).
Does acknowledgement give you parental authority?
Yes, for acknowledgements made on or after 1 January 2023. Under Article 1:251b BW the mother and the person who acknowledged the child then exercise parental authority (ouderlijk gezag) jointly.
The mother has sole authority if the deed records that the mother and the acknowledging parent declared so, or if the court gave substitute consent for the acknowledgement. Joint authority also does not arise if a guardian has been appointed, nobody has authority, the mother shares authority with a non-parent, or the acknowledging parent had authority over the child before.
What if the child was acknowledged before 1 January 2023?
Then the old rules apply, and the date of the acknowledgement counts, not the date of birth. The mother has sole authority until the parents jointly ask for registration in the authority register (gezagsregister), which can be done online through the courts.
If the mother does not cooperate, the other parent can ask the court for joint authority under Article 1:253c BW. The court only refuses if there is an unacceptable risk that the child would be caught between the parents, or refusal is otherwise necessary in the child’s interest.
| Situation | Legal parentage | Parental authority |
|---|---|---|
| Married or registered partners at the birth | By law (Article 1:199 BW) | Joint, by law |
| Acknowledgement on or after 1 January 2023 | By acknowledgement | Joint, unless an exception applies |
| Acknowledgement before 1 January 2023 | By acknowledgement | Mother alone until registration or court order |
| Acknowledgement with substitute consent | By acknowledgement | Mother alone; separate application needed |
Can legal parentage be undone?
Yes, but only through the court, on the ground that the parent is not the biological father, and within short deadlines. Paternity by marriage is denied (ontkenning); an acknowledgement is annulled (vernietiging).
How does denial of paternity work?
Under Article 1:200 BW the father, the mother or the child can ask the court to declare that the husband or registered partner is not the father. The mother must file within one year of the birth; the father within one year after he learned that he is probably not the biological father; the child within three years after learning this, or within three years after turning 18.
The father and mother cannot deny paternity if the man knew of the pregnancy before the marriage or partnership, or consented to an act that may have led to conception, such as donor insemination. These bars do not apply to the father if the mother deceived him about who the begetter was.
How is an acknowledgement annulled?
Under Article 1:205 BW the child can ask for annulment, unless the acknowledgement took place after it turned 18. The acknowledging parent or the mother can only do so if they were moved to it by threat, mistake or fraud, or during their minority by abuse of circumstances; the public prosecutor can act where the acknowledgement breaches Dutch public order.
The acknowledging parent or mother must file within one year after the threat ended or the fraud or mistake was discovered. The child has three years after learning the truth, or three years after turning 18. After a final annulment the acknowledgement is treated as never having had effect, but maintenance already paid cannot be reclaimed (Article 1:206 BW).
Can a court establish paternity?
Yes. If a man refuses to acknowledge the child, the district court can establish his parentage under Article 1:207 BW, also after his death, because he is the begetter or because, as the mother’s life partner, he consented to the act that may have led to conception.
The mother can apply until the child turns 16, within five years after the birth or after she learned the identity and address of the presumed begetter. The child can apply without a time limit. The court cannot establish parentage if the child already has two parents, if the man could not marry the mother because of close family ties, or if he is a living minor under 16. In practice the court relies on a DNA test by an accredited laboratory.
How does parentage work for same-sex couples?
The wife or registered partner of the birth mother is a legal parent by law if the child was conceived with donor sperm through a clinic, the donor’s identity is unknown to the mother, and a declaration from the donor data body is submitted at the registration of the birth (Article 1:198(1)(b) BW). In other cases the second mother (duomoeder) becomes a parent by acknowledgement, with joint authority since 2023.
For male couples only one partner can become a legal parent by acknowledgement, because a child cannot have more than two legal parents. The other partner can generally only become a parent through adoption, or share authority as a non-parent.
What about surrogacy?
Because the woman who gives birth is always the legal mother, intended parents do not become legal parents automatically. Parentage must be transferred afterwards, usually through denial or annulment, acknowledgement by the intended father and adoption by the other intended parent.
A bill on children, surrogacy and parentage (Wet kind, draagmoederschap en afstamming, parliamentary file 36390) would introduce a regulated procedure with prior court approval. It was submitted in 2023 and is still pending in the House of Representatives; it is not in force. The Hoge Raad declined to answer preliminary questions on foreign surrogacy because the legislature was dealing with it (HR 13 May 2022, ECLI:NL:HR:2022:685). Take Dutch advice before conception if you consider surrogacy abroad.
What if the family has an international dimension?
Book 10 BW decides which law applies and whether foreign parentage is recognised. For acknowledgement, the capacity and conditions are in principle governed by the law of the acknowledging parent’s nationality (Article 10:95 BW), so a Dutch registrar may apply foreign law to your acknowledgement.
A final foreign court decision on parentage is recognised in the Netherlands by law, without a separate procedure, unless a refusal ground applies, such as a manifest lack of jurisdiction or a breach of Dutch public policy (Article 10:100 BW). Foreign deeds, such as a birth certificate or an acknowledgement before a foreign authority, are recognised under similar conditions (Article 10:101 BW). Foreign documents usually need an apostille or legalisation and a sworn translation before a Dutch municipality accepts them.
Does your child become Dutch?
A child acknowledged before birth by a Dutch parent is Dutch from birth. A child acknowledged by a Dutch parent after birth but before the age of seven becomes Dutch by the acknowledgement (Article 4(2) of the Dutch Nationality Act, Rijkswet op het Nederlanderschap).
From the age of seven, the child only becomes Dutch if the parent proves biological parentage at or within one year after the acknowledgement (Article 4(4) Rijkswet op het Nederlanderschap). A child of a parent whose parentage is established by the court also becomes Dutch (Article 4(1)).
What should you check as the parent who wants to acknowledge?
Check these points before or soon after the birth:
- Whether you are married to or registered with the mother, in which case acknowledgement is not needed.
- That you have the mother’s written consent, and the child’s if it is 12 or older.
- Whether you want joint authority or a declaration that the mother has sole authority.
- Which law applies if you or the mother have a foreign nationality.
- Whether your child’s Dutch nationality depends on acknowledging before the age of seven.
What should you check as the mother?
As the mother you decide on consent while the child is under 16. Check these points:
- That you understand acknowledgement gives the other parent joint authority by law since 2023.
- Whether you want to record in the deed that you keep sole authority.
- Whether the person acknowledging is the begetter, as a court may otherwise grant substitute consent.
- The one-year deadlines if you want to challenge paternity or an acknowledgement.
- Maintenance and surname arrangements that follow from the new parentage.
What can we do for you with acknowledgement of a child?
Our family lawyers advise parents in the Netherlands and abroad on legal parentage. We can:
- Explain the consequences of acknowledgement for authority, maintenance and nationality.
- Request substitute consent from the court if the mother refuses.
- Apply for joint authority under Article 1:253c BW.
- File or defend a request for denial, annulment or judicial establishment of parentage.
- Advise on recognition of foreign parentage and birth records.
Summary
- Without marriage or registered partnership, the partner becomes a legal parent only by acknowledgement or a court decision.
- Acknowledgement requires the mother’s written consent while the child is under 16; a court can replace refused consent (Article 1:204 BW).
- Since 1 January 2023 acknowledgement gives joint parental authority by law, with exceptions (Article 1:251b BW).
- Parentage can only be undone by the court within short deadlines (Articles 1:200 and 1:205 BW).
- A child acknowledged by a Dutch parent before the age of seven becomes Dutch.
Frequently asked questions
Do I need to acknowledge my child if I am married to the mother?
No. If you are married to or in a registered partnership with the mother at the birth, you are the legal father by law under Article 1:199 BW. Acknowledgement is not possible because the child already has two legal parents.
Can the mother refuse to let me acknowledge our child?
She can withhold consent while the child is under 16, but you can ask the district court for substitute consent under Article 1:204(3) BW. If the court grants it, you do not receive parental authority automatically and must apply for it separately.
Our child was acknowledged in 2021. Do we have joint authority?
No. Article 1:251b BW only applies to acknowledgements made on or after 1 January 2023. You can jointly ask for registration in the authority register; if the mother does not cooperate, you can apply to the court under Article 1:253c BW.
I acknowledged a child who turns out not to be mine. Can I undo it?
Only if you acknowledged under threat, mistake or fraud, or during your minority by abuse of circumstances, and you file within one year (Article 1:205 BW). If you knew you were not the biological father, you generally cannot annul it.
Can a child have more than two legal parents in the Netherlands?
No. Dutch law allows a maximum of two legal parents, and an acknowledgement of a child who already has two parents is void (Article 1:204 BW).
