Under Utah Code sections 30-8-4 and 30-8-5, a prenuptial agreement cannot include provisions that limit child support, determine child custody, waive the right to file for divorce, or violate public policy. The Utah Uniform Premarital Agreement Act places specific boundaries on what engaged couples can agree to, and any provision falling outside those boundaries is unenforceable.
Last updated: July 2026
Key Takeaways
- Child support and child custody provisions are void in Utah prenuptial agreements under section 30-8-4.
- Provisions that encourage divorce or waive the right to seek divorce violate public policy and are unenforceable.
- Spousal support waivers that would make a spouse a public charge may be rejected by Utah courts.
- Unconscionable provisions that are grossly unfair at the time of signing will not be enforced.
- Court orders and the best interests of the child standard override any prenuptial agreement terms.
The Utah UPAA gives couples broad freedom to contract, but that freedom has limits. Understanding what cannot be included is just as important as knowing what can be included. The restrictions reflect public policy choices about the rights of children and the fundamental nature of marriage. The relevant statutes are found at Utah Code sections 30-8-4 and 30-8-6.
Can a Utah prenuptial agreement limit child support?
No. This is the most important restriction. Under Utah Code section 30-8-4, a prenuptial agreement cannot adversely affect a child’s right to support. Any provision that attempts to limit, waive, or reduce child support is void and unenforceable.
The reason is straightforward: child support belongs to the child, not to the parents. Parents cannot contract away their child’s right to financial support. Utah courts apply the child support guidelines established by state law regardless of what the prenuptial agreement says.
Even if both parties agree to a different support amount, the court will set child support based on the Utah child support guidelines. The parents’ agreement is not binding on the court when it comes to child support. This protects the child’s interest in receiving adequate financial support.
Can a Utah prenuptial agreement determine child custody?
No. A prenuptial agreement cannot determine child custody, parenting time, or visitation arrangements. These decisions are made by the court based on the best interests of the child standard under Utah Code Title 30, Chapter 3.
Custody provisions in a prenuptial agreement are unenforceable because the child is not a party to the agreement. Parents cannot sign away a child’s right to have custody determined based on the circumstances that exist at the time of the divorce. The child’s best interests at the time of the custody decision override any prior agreement.
While a prenuptial agreement cannot dictate custody, it can address financial aspects of child-rearing. For example, the agreement can specify how educational expenses will be paid, who will pay for extracurricular activities, and how health insurance costs will be shared. These financial provisions are enforceable as long as they do not limit the child’s right to support.
Can a Utah prenuptial agreement encourage divorce?
No. Provisions that encourage divorce or penalize a spouse for staying married violate public policy. Utah courts will not enforce a “fluctuating” provision that gives one spouse more money if they file for divorce than if they stay married.
The public policy against encouraging divorce is well established in Utah law. A prenuptial agreement should be neutral with respect to the marriage. It should not create incentives for divorce or make divorce financially advantageous for one party.
An experienced Utah prenuptial agreement lawyer can help ensure that the agreement’s terms do not cross this line. The difference between a valid provision and an invalid one can be subtle, and proper drafting makes a significant difference.
Can a Utah prenuptial agreement include an illegal provision?
No. Section 30-8-4(8) specifically limits the catch-all provision to matters “not in violation of public policy or a statute imposing a criminal penalty.” Any provision that involves illegal activity is void.
This includes provisions that would require a party to commit a crime, conceal illegal activity, or participate in any unlawful act. The court will not enforce provisions that violate state or federal law, regardless of whether both parties agreed to them.
| Prohibited Provision | Why It Is Prohibited | Utah Code Reference |
|---|---|---|
| Child support limits | Child’s right to support cannot be waived | 30-8-4 |
| Child custody terms | Best interests of child standard controls | 30-8-4, 30-3-10 |
| Divorce encouragement | Violates public policy | Common law |
| Illegal activities | Cannot enforce illegal contracts | 30-8-4(8) |
| Unconscionable terms | Grossly unfair provisions | 30-8-6 |
| Involuntarily signed | Duress or coercion invalidates | 30-8-6 |
Can a Utah prenuptial agreement waive the right to spousal support completely?
Yes, but with a significant limitation. A spousal support waiver that would cause one spouse to become a public charge may be unenforceable. Utah courts have the authority to reject a spousal support waiver if enforcing it would leave one spouse in need of public assistance.
The waiver must also be voluntary and not unconscionable. Under section 30-8-6, the party challenging the spousal support waiver must prove either that the agreement was not signed voluntarily or that it was unconscionable at the time of signing. A waiver made without adequate financial disclosure is more vulnerable to challenge.
The unique Utah insight is that Utah courts have applied the unconscionability standard to spousal support waivers in a way that emphasizes the importance of financial disclosure. When both parties have made full disclosure and had time to consult with counsel, Utah courts are likely to enforce the waiver even if it results in a significant disparity in post-divorce finances.
What happens if a prenuptial agreement contains a prohibited provision in Utah?
When a prenuptial agreement contains a prohibited provision, the court will typically sever that provision and enforce the rest of the agreement. The general rule is that invalid provisions can be removed without affecting the validity of the remaining terms.
However, if the invalid provision is central to the agreement, the entire agreement may be unenforceable. This is the “essential terms” analysis. If the court determines that the parties would not have entered the agreement without the invalid provision, the whole agreement fails.
Proper drafting minimizes this risk. A well-drafted prenuptial agreement includes a severability clause stating that if any provision is found invalid, the remaining provisions remain in effect. This clause is enforceable under Utah law and protects the agreement from being invalidated by a single problematic provision.
What constitutes unconscionability in a Utah prenuptial agreement?
Under section 30-8-6, an unconscionable agreement is one that was grossly unfair at the time it was signed. Unconscionability is determined as of the date of signing, not at the time of divorce. A provision that seems unfair in hindsight may have been fair when signed.
Utah courts consider several factors: whether the agreement is one-sided, whether one party waived substantial rights without adequate information, whether the parties had uneven bargaining power, and whether the agreement was the product of unfair tactics.
The difference between a valid agreement and an unconscionable one often comes down to disclosure. Full and fair financial disclosure is the best protection against an unconscionability claim. An agreement signed after both parties have fully disclosed their assets and debts is far less likely to be found unconscionable.
Frequently Asked Questions
Can a prenuptial agreement in Utah require a spouse to waive the right to an attorney?
A provision preventing a spouse from hiring an attorney would likely violate public policy. However, an agreement can include a voluntary waiver of independent counsel if knowingly made.
Can a Utah prenuptial agreement require a spouse to commit a crime?
No. Any provision requiring illegal activity is void under section 30-8-4(8) and cannot be enforced.
Can a prenuptial agreement prohibit a spouse from filing for divorce?
No. The right to file for divorce is a fundamental right that cannot be waived. Such a provision would violate public policy.
Can a Utah prenuptial agreement require a spouse to change religion or lifestyle?
Provisions interfering with fundamental personal rights may violate public policy and be unenforceable, even under section 30-8-4(8)’s catch-all provision.
Can a prenuptial agreement in Utah include a penalty for infidelity?
Provisions penalizing infidelity raise public policy concerns. Utah courts may refuse to enforce such “lifestyle clauses” as contrary to public policy.
What happens if a court finds part of my Utah prenuptial agreement invalid?
If the agreement has a severability clause, the invalid provision is removed and the rest of the agreement remains enforceable. Without a severability clause, the entire agreement may be at risk.
Can a Utah prenuptial agreement waive the right to inherit?
Yes. Waiving the right to inherit, including the elective share, is specifically permitted under section 30-8-4(4) and is enforceable when properly executed.
Can a prenuptial agreement in Utah limit bankruptcy rights?
Provisions attempting to limit bankruptcy rights may violate federal law. Bankruptcy rights are governed by federal statute and cannot be waived by private agreement.
Understanding the limits of a Utah prenuptial agreement is just as important as knowing what it can include. Prohibited provisions are unenforceable, and including them can jeopardize the entire agreement. Working with a knowledgeable Utah lawyer ensures that your agreement stays within legal boundaries while accomplishing your financial planning goals.
Planning a marriage in Utah? Protect your future with a carefully drafted prenuptial agreement. Jeremy D. Eveland, MBA, JD, can help.
Call (801) 613-1472 or visit jeremyeveland.com to schedule a consultation today.
This article is for informational purposes only and does not constitute legal advice. Consult with a qualified Utah family law attorney for advice specific to your situation.
Comments are closed.