When couples consider prenuptial or postnuptial agreements much of the focus tends to be on financial matters, who keeps what, how assets and debts will be divided, and protecting inheritances. But for couples with children already, or planning to have children, a natural question is: can child arrangements be included in a nuptial agreement?
What Can (and Cannot) Be Included in a Nuptial Agreement
Before attempting to draft child arrangements into a nuptial agreement, it’s crucial to understand the legal boundaries under English law:
What can be included
You can include financial provision terms for children such as anticipated school fees, contributions to maintenance, housing costs, or funds earmarked for particular purposes. Such provisions act as a guide or starting point for future negotiation.
- You can also include a framework or statement of intention as to how parenting might proceed. For example preferences about co-parenting, guidance on dispute resolution, plans for shared decision-making, mechanisms for regular review, or mediation clauses.
What cannot be bindingly included
You cannot pre-determine a child’s best interests at an unknown date in the future. Therefore, you cannot pre-emptively specify legal child arrangement orders (custody, residence, contact) in a way that ousts the court’s jurisdiction or binds the court. Any clauses in a Nuptial Agreement which pre-emptively dictate child arrangements in the event of a marriage breakdown, perhaps many years before such an event, would be unenforceable. Therefore, it would not be possible to specify the day-to-day care or living arrangements for a child in a Nuptial Agreement.
The court must always decide on a child’s best interests and welfare in light of current circumstances at the time of any issues or dispute arising, not merely follow prior agreement.
If separating parents do not agree the arrangements for their children, one or both of them will need to make an application under the Children Act 1989. The Court will make decisions in accordance with the child’s best interests, and the child’s welfare will be the Court’s paramount consideration. Decisions will be made by the Court by reference to a checklist of factors (called ‘the Welfare Checklist’) which includes the wishes and feelings of the child, the child’s physical, emotional and educational needs, the likely effect of any change in circumstances, the child’s age, sex, background and any characteristics which the court considers relevant, any harm which the child has suffered or is at risk of suffering and the ability of each parent of meeting the child’s need. It goes without saying that these matters could only be assessed at the time the Court is being asked to make a decision.
- You cannot remove or deny the child maintenance jurisdiction (e.g. via the Child Maintenance Service), or insist on fixed maintenance in a way that prevents variation to meet a child’s actual needs or fails to reflect changes in financial circumstances (e.g. if the paying parent’s income reduces or increases.
- Any clause that is contrary to the child’s best interests, or which leaves the child at risk (financially, emotionally or in other respects) is unlikely to be upheld.
Parties sometimes seek to include terms regarding children in nuptial agreements, but the courts will always give priority to the child’s needs at the time of the dispute.
Benefits of Including Child Arrangements
Even with the legal constraints, there are real advantages to addressing child arrangements within a nuptial agreement:
- Clarity and transparency in advance
By having open discussions and recording intentions, couples can reduce uncertainty and avoid conflict later. It makes expectations clearer for both parties. - A reference point in disputes
While not binding, a well-drafted “intention” clause or guiding principles can help courts or mediators see what the parents originally contemplated, which may carry persuasive weight. - Financial protection for children
By stipulating in advance how money will be provided for children’s needs you reduce the risk of disagreement over such costs if the relationship breaks down. - Flexibility and review built in
A nuptial agreement can provide a mechanism for periodic review or adjustment of child-related provisions, triggered by certain events. This avoids the risk of being locked into outdated terms. - Peace of mind, especially in blended families
For couples where one or both already have children, mapping out how assets or support might flow to children from a prior relationship can help avoid disputes and ensure their needs are considered.
Key Considerations to Ensure Effectiveness
To ensure any child-related clauses or guidance in a nuptial agreement are taken seriously and remain flexible enough to be fair, bear in mind:
- Independent legal advice for both parties
Each party should have their own solicitor to ensure fairness, avoid duress or imbalance, and increase the chances any guidance will be respected by a court. - Full financial disclosure
To ground any child provision you propose, both parties must disclose assets, income, liabilities. Otherwise, the agreement may be challenged for lack of transparency. - Link to “best interests” and review mechanisms
Make clear any child guidance is subject to the child’s evolving needs and that review provisions (at intervals or on trigger events) are built in. - Avoid over-precision
Don’t be so rigid that small changes of circumstance (e.g. relocation, educational needs, health) make the agreement irrelevant. Use broad guiding principles rather than micromanaging every detail. - Include fallback or variation clauses
Allow for renegotiation or mediation if circumstances change. A mechanism for modifying the child provisions will give flexibility. - Consider timing
If the agreement is being made before or early in marriage, be careful not to “prejudice” the rights or needs of future children. Courts are often cautious about rigid commitments made before children exist. The Supreme Court has said it would not be fair for a pre-nuptial agreement to prejudice the reasonable requirements of any children of the family (Radmacher v Granatino [2010 UKSC 42]). It is possible to leave the financial provision for an unborn child to be decided following the birth of a child, or it can even be left as an issue to be decided on the divorce itself (usually subject to principles in the pre-nuptial agreement setting out the parties’ expectation of need and the type of financial provision that may need to be provided). Couples can include a review clause in their agreement to cater for any change in circumstances following the birth of a child. - Consistency with other documents
If there is a will, trust, or other estate planning, ensure the child provisions are aligned.
In practice, many family law practitioners treat child clauses in nuptial agreements more as persuasive intentions than hard rules, while ensuring the primary enforceable content remains financial.
When Should Child Arrangements Be Reviewed or Updated?
Because children’s needs and life circumstances evolve, any child guidance in a nuptial agreement should be regarded as dynamic. Some key life events or changes that should prompt review include; the birth or adoption of a child, significant changes in income or assets, health changes (parent or child), relocation, change in schooling, remarriage or step-family additions, and court orders or arrangements made outside of the nuptial agreement.
Including a review clause or sunset clause for child provisions in the nuptial agreement helps ensure that the terms remain appropriate as circumstances evolve.
Final Thoughts & Next Steps
While you cannot rigidly bind courts to particular child custody or contact orders via a nuptial agreement, including carefully drafted guidance and financial commitments can be extremely valuable. The goal is to provide a fair, transparent, and flexible framework to reduce friction, support children’s needs, and ease future decision-making.
However, for child-related clauses to carry weight, they must be drafted with care, grounded in fairness, and always subordinate to the child’s best interests at the time of any dispute.
If you’d like to explore how child arrangements could be incorporated into your prenuptial or postnuptial agreement in a legally robust way, or to discuss the wider scope of our nuptial agreement services, please visit our Prenuptial and Postnuptial Agreements service page or contact a member of our Family Law team by emailing family@dtmlegal.com.
