How does a father acknowledge a child if we are not married?
If the parents are not married, the man does not automatically become the father – he acknowledges paternity by a statement, which is valid and entered only if the child's mother consents. Acknowledgment is governed by the Family Code (Articles 112–134). The statement can be made before the birth at the social work centre, where the partners give a joint statement, or after the birth. The acknowledgment is entered in the civil register only with the mother's consent, of which the registrar notifies her. If the mother does not agree or does not give a statement within one month, the man who acknowledged the child may file an action to establish paternity – within one year of being notified, but at the latest within five years of the birth. The myth that with unmarried partners the father is "automatically" registered is false – acknowledgment or a court finding is needed. For married parents a presumption applies that the mother's husband is the father.
📋 The rules
- If the parents are not married, paternity is established by acknowledgment or a court finding; the father is not registered automatically.
- Acknowledgment can be made before or after the birth, generally at the social work centre by a joint statement of the partners.
- The acknowledgment is entered in the civil register only with the mother's consent, of which the registrar notifies her.
- If the mother does not agree or gives no statement within one month, the acknowledger may file an action to establish paternity.
- The action may be filed within one year of the notice that the mother disagrees, but at the latest within five years of the birth.
🔓 Exceptions
- For a child born in marriage a presumption of paternity applies – the mother's husband is deemed the father, so a separate acknowledgment is not needed.
- If the child is already old enough, the child's consent is also required for the acknowledgment, in addition to the mother's consent.
- Paternity can also be challenged under statutory conditions and deadlines, where the registered father is not in fact the biological father.
⚠️ Penalties & fines
Acknowledging paternity is not linked to fines but to the child's rights and the father's duties, which either arise or fail to. Without acknowledgment or a court finding the child has no legal father, which means there is no basis for maintenance, inheritance from the father, a surname or contact. Once paternity is established, the father takes on all parental duties, above all maintenance; non-payment leads to court enforcement and, in serious cases, criminal liability. The deadlines matter: an action to establish paternity must be filed in time, or the right to the court route lapses. A false acknowledgment, or acknowledgment by someone who is not the father, can be challenged, which opens disputes and uncertainty for the child. Because child benefit and other family rights also depend on acknowledgment, unresolved paternity often harms the child rather than just the parent.
📎 Official sources
- PISRS · legislation register (Family Code, acknowledging and establishing paternity) →
- e-uprava · acknowledging paternity →
- Social Work Centres of Slovenia · acknowledging paternity →
❓ Frequently asked
Is the father registered automatically if we are not married?
No, with unmarried parents the father is not registered automatically, but must acknowledge paternity or have it established by a court. The acknowledgment is entered in the civil register only if the child's mother consents, of which the registrar notifies her.
Can I acknowledge paternity before the birth?
Yes, paternity can be acknowledged before the birth, generally at the social work centre by a joint statement of the partners. The acknowledgment is valid and entered only if the child's mother consents, of which the registrar notifies her.
What if the mother does not agree with the acknowledgment?
If the mother does not agree or gives no statement within one month of notice, the man who acknowledged the child may file an action to establish paternity. The action may be filed within one year of the notice, but at the latest within five years of the child's birth.
Who is deemed the father if the mother is married?
For a child born in marriage the presumption is that the mother's husband is the father. In that case a separate acknowledgment of paternity is not needed, but paternity may be challenged under the statutory conditions and deadlines.
Why does acknowledging paternity matter?
The child's rights, such as maintenance, inheritance from the father, a surname and contact, depend on acknowledgment. Without legally established paternity the child has no legal father, which also affects rights such as child benefit.
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