Prenuptial agreements may seem like a reasonable way to prevent future conflicts. However, when they involve children who are already born or may be born in the future, the question changes: can you decide in advance who they will live with, how much time they will spend with each parent, or who will pay their expenses? The practical answer is no, not in a definitive and binding way. Decisions concerning children must serve their best interests at the time the issue arises, not a prediction made years before.

I will explain why a clause signed before marriage does not replace the rules on custody and financial support, which agreements can instead be useful, and what changes when the couple faces a concrete crisis. The central distinction is between an arrangement that helps parents organize themselves and an agreement that purports to determine in advance the rights and needs of a minor.

Why clauses concerning children cannot decide the future

A child is not the subject matter of a contract between parents. Custody, parenting time, school choices, healthcare, and contributions to support involve rights and needs that cannot be fixed once and for all by adults prior to a future separation or divorce. The issue is not the form used: a private writing, an agreement before a notary public, or a clause included in a broader pact cannot exempt these decisions from the standard of the best interests of the child.

Saying always that the clause is void may be inaccurate. The legal classification depends on the text and the effect the parties intend to give it. What matters, for anyone reading such an agreement, is the concrete consequence: a prenuptial provision does not bind the judge and does not prevent the adoption of different measures for the children. Nor can it block in advance the request to modify custody, visitation, or financial contributions when the family situation requires it.

Property agreements between future spouses are a distinct matter. A clause that exclusively regulates financial relations between adults requires independent examination and does not automatically make a clause concerning children effective. In this guide, I focus on arrangements that affect parental responsibility, the placement of the minor, and child support: these are aspects regarding which the parents' will encounters particularly strict limits.

The child's best interests guide custody and visitation

The law places the minor's relationship with both parents at the center. Article 337-ter of the Italian Civil Code recognizes the child's right to maintain a balanced and continuous relationship with each parent, as well as to receive care, upbringing, education, and moral assistance from both. In decisions following a couple's crisis, the judge rules with exclusive reference to the moral and material interests of the offspring. You can read the current text of the civil code, including Articles 337-ter and 337-quinquies.

Joint custody does not coincide with a mathematical division of time. The judge evaluates as a priority that children remain in the custody of both parents, but must also establish the times and methods of their presence with each. Therefore, no valid clause can abstractly impose an identical division of days or permanently assign priority to one parent. The child's age, schooling, distances, stability of habits, concrete availability of the parents, and ability to cooperate can affect these matters differently.

Not even a very detailed agreement replaces the current assessment. Establishing before the wedding that, in the event of separation, the child will live in a certain home, attend a specific school, or see a parent only on predetermined days ignores an essential fact: at the time of the crisis, the minor's needs, living locations, parents' work, or the quality of their communication may have changed. A pact built on future and unknown circumstances cannot prevail over such changes.

Parental responsibility: choices cannot be waived in advance

Parental responsibility is exercised by mutual agreement. Even during cohabitation, both parents participate in decisions concerning the child, taking into account the child's abilities, inclinations, and aspirations. Current regulations expressly refer to habitual residence, education, and upbringing; in the event of disagreement on important issues, each parent may apply to the judge, who seeks a solution consistent with the child's best interests. The amendments introduced by legislative decree no. 149 of 2022 can be consulted in the text published in the Official Journal.

It is not effective to waive one's role as a parent in advance. A clause by which a future father or mother declares that they do not wish to participate in school, healthcare, or educational decisions does not solve the problem that may arise later. Similarly, a signature is not sufficient to permanently attribute all important decisions to a single parent. Any exclusive custody requires an assessment based on the best interests of the minor, not a preference agreed upon at an earlier time.

Daily decisions and important ones should not be confused. Ordinary choices can be managed with greater autonomy by the parent with whom the child is staying at that moment. Conversely, decisions regarding health, education, upbringing, and habitual residence are of greater significance. An agreement can make communication methods between parents clearer, but it cannot eliminate the duty to consult nor predetermine the response to every future disagreement.

Financial support, housing, and residence are not immutable promises

Child support serves the actual needs of the child. For this reason, a prenuptial clause that permanently fixes a sum, excludes future contributions, or assigns all expenses to a single parent does not offer a definitive solution. The parents' resources, the care time provided by each, the child's needs, and actual expenses can change profoundly. Regulation must therefore be consistent with the concrete situation and with the duty of both parents to contribute to the child's upbringing.

The family home is not assigned based on an abstract prediction. Even a clause that establishes in advance who will remain in the home in the event of separation does not solely decide the future assignment of the family home if there are children. The continuity of the minor's living environment is an important element, but it must be assessed together with the actual circumstances: where the child lives, what school they attend, which parent takes care of them in daily life, and whether the property is truly their family home.

The child's residence requires a current decision. A relocation planned years before, perhaps to a different city or abroad, cannot be imposed on the basis of a prenuptial pact. If the parents agree, they must still consider the concrete effects on the minor; if they do not, the issue requires a solution that takes their interests into account. The fact that a parent accepted a clause before marriage does not close the discussion.

When an agreement between parents can play a useful role

An agreement reached during a crisis can be relevant. Article 337-ter provides that the judge shall take note of agreements between parents if they are not contrary to the best interests of the children. This does not mean that every private arrangement automatically becomes definitive, but it recognizes the value of cooperation when it produces concrete and adequate conditions for the minor: realistic parenting time, rules on expenses, clear communications, and attention to the child's daily life.

In joint proceedings, review is not an empty formality. Article 473-bis.51 of the Code of Civil Procedure governs joint applications in family disputes. The judge may homologate or take note of the agreements; if they consider that they conflict with the children's interests, they summon the parties indicating the necessary modifications and, in the absence of a suitable solution, dismiss the application as it stands. The updated text from the 2024 corrective reform is available on Normattiva, legislative decree no. 164 of 2024.

A judicial measure is not immutable in any case. Article 337-quinquies allows parents to request at any time the review of provisions concerning custody, parental responsibility, and financial contributions. This makes the limit of a prenuptial clause evident: even an agreement examined by the judge responds to the situation existing at that time and may require a new arrangement if important facts change or different needs of the child emerge.

How to interpret a clause already signed

The first question is what effect the clause purports to produce. If it describes a general intention to cooperate, avoid conflicts, or discuss certain choices with the help of mediation, it may have organizational utility. If instead it claims to already decide custody, residence, child support, or waivers by a parent for the future, it cannot be treated as a definitive rule for the child.

The timing of the conclusion of the agreement also matters. An arrangement stipulated before the birth of the child is inevitably far removed from their concrete needs. But neither can a pact signed when the child exists freeze family conditions forever: growth, school, health, distance between homes, and work arrangements can modify the meaning of a solution that was initially reasonable.

It is advisable to separate the parents' issues from those of the child. The property parts of the agreement must be read to understand which obligations concern adults exclusively. Clauses concerning children instead require focusing on what happens today: where the minor lives, how days are organized, what expenses each parent faces, and what difficulties make an updated agreement or a judicial measure necessary.

Frequently asked questions

Can I include joint custody in the prenuptial agreement?

You can express an intention, but not impose a future decision. Joint custody is evaluated as a priority by the judge, but must be organized according to the concrete interests of the child at the time of the crisis. A prenuptial clause cannot determine in advance times, placement, or the manner of exercising parental responsibility.

Can we establish before marriage who will pay the children's expenses?

A general provision does not block future support. Parents can practically organize certain expenses, but cannot irreversibly fix a contribution independently of the child's needs and actual resources. If the couple separates, the financial regulation must remain appropriate to the situation existing at that time.

Does an agreement signed before a notary become binding concerning children?

Notarial form does not override the limits placed to protect the minor. The notary can give form to a deed, but does not transform a prenuptial clause into a measure on custody or support. Measures concerning children remain subject to the assessment of the best interests of the minor and, when necessary, judicial control.

Can we reach an agreement when we decide to separate?

Yes, and it is different from deciding years before. An agreement reached during separation can describe conditions based on the child's real life. The judge can take note of it or homologate it if it is not contrary to their interests; if critical issues are identified, modifications can be requested. The agreement must therefore be concrete, updated, and sustainable.

Can I request a modification after a homologated agreement?

Yes, conditions concerning children can be revised. Article 337-quinquies allows requesting at any time the review of provisions concerning custody, parental responsibility, and financial contributions. A simple second thought is not enough: it is necessary to explain which current elements make a different arrangement necessary in the child's best interests.