A Texas prenuptial agreement can’t reduce a child’s right to support, can’t lock in custody before a child is even born, and can’t include terms that break public policy or a criminal law. Almost every money question is fair game, though. Couples can waive or reshape property rights, spousal support and rights at death under Texas Family Code Section 4.003.
A premarital agreement, or prenup, is a written contract two people sign before the wedding that takes effect once they marry. Are you engaged and wondering what one can actually do? This guide covers what Texas law allows, what it forbids, and what can make a signed agreement fail in a Texas divorce.
What Texas law lets a prenuptial agreement cover
Texas law lets a prenuptial agreement cover eight categories of rights, listed in Family Code Section 4.003(a). Six deal with money and property. One covers which state’s law applies. The last is a catch-all for “any other matter” that doesn’t violate public policy or a criminal statute.
Texas adopted these rules as the Uniform Premarital Agreement Act (Section 4.010), often shortened to TUPAA. Here is what the list includes, in plain terms:
- Each spouse’s rights in property, whenever and wherever it was acquired
- Who can buy, sell, borrow against or manage that property
- How property is divided on separation, divorce or death
- Changing or eliminating spousal support
- Making a will or trust to carry out the agreement
- Who owns and receives a life insurance death benefit
- Which state’s law governs the agreement
- Other personal rights and duties, within the limits above
The statute defines “property” broadly. It includes income and earnings, not just houses and bank accounts (Section 4.001). That matters because paychecks are often where couples build most of their community estate. Our Texas prenuptial agreement attorneys usually start a consultation by asking which of these eight categories you actually care about.
Property rights you can waive or reshape
Property is where prenuptial agreements do most of their work. Without one, what either spouse earns during the marriage is presumed community property. In a divorce in Texas, the court then makes a just and right property division. With an agreement, a couple decides in advance which assets stay separate, how growth is treated and what each person keeps.
The Texas Constitution already treats property owned before marriage, and property received later by gift or inheritance, as separate (Tex. Const. art. XVI, Section 15). The catch is income. Rent from a house you owned before the wedding is community property in Texas. So are dividends from inherited stock. Income from separate property stays separate only if you agree in writing, and a prenup is the cleanest place to say so.
Common property terms include:
- Keeping a business, and its growth in value, as one spouse’s separate property
- Treating each spouse’s salary and retirement contributions as that spouse’s separate property
- Waiving a claim for reimbursement when community money pays down separate debt
- Setting a fixed payment or property split if the marriage ends
A prenup can also address what happens at death, including life insurance proceeds. One practical warning: the agreement can promise a will, but it can’t sign one for you. If the prenup says your spouse inherits the house, you still need a will or trust that does it. If you’re unsure how Texas divides property without an agreement, our guide to the just and right division of community property explains the default rules a prenup would replace.
Spousal support can be waived in a Texas prenup
Yes, a Texas prenuptial agreement can waive spousal support. Section 4.003(a)(4) lets couples modify or eliminate it. Texas’s enforcement rule in Section 4.006 has no separate hardship exception for a support waiver. If the agreement is otherwise valid, a waiver of court-ordered maintenance generally holds.
It helps to know what you’re giving up. Court-ordered maintenance in Texas is already narrow. Under Family Code Section 8.051, a spouse qualifies only if they’ll lack enough property to meet minimum reasonable needs and one more condition applies. Those conditions include a marriage of 10 years or longer plus an inability to earn enough, a disabling condition, caring for a disabled child, or certain family violence convictions.
Some couples go the other direction and promise support the court couldn’t otherwise order, such as a set monthly amount for a set number of years. That’s contractual alimony, and it works differently from statutory maintenance. Our spousal support attorneys can explain how each kind is enforced. Because a waiver is permanent once you marry, the spouse giving up support should understand the other spouse’s finances before signing.
Child support and custody stay with the court
A Texas prenup can’t touch child support or child custody. Section 4.003(b) says plainly that a child’s right to support “may not be adversely affected by a premarital agreement.” Any clause capping or waiving child support is unenforceable against the child, no matter what the parents signed.
Custody works the same way in practice. Texas courts treat the child’s best interest as the primary consideration in every conservatorship and possession decision (Section 153.002). That is judged when the case is filed, not years earlier. Even a child support agreement made at the time of divorce must be approved by the court as in the child’s best interest (Section 154.124).
Tyler Key, our managing attorney, has served as a Guardian ad Litem and Amicus Attorney, roles where the lawyer looks only at what the child needs. From that seat, it’s clear why the law works this way. A plan written before a child existed can’t account for that child, so courts start fresh. If support is your concern, our child support lawyers can walk through the guideline rules.
Personal and lifestyle clauses
Texas law allows a prenup to cover personal rights and obligations, but only if the term doesn’t violate public policy or a statute imposing a criminal penalty (Section 4.003(a)(8)). That leaves room for some personal terms and rules out others.
A clause about religious upbringing or household chores may be allowed on paper. Whether a judge would ever enforce it is another matter. Courts rarely order specific personal conduct. A term that requires an illegal act falls outside the statute entirely, and a judge can refuse a term that runs against public policy. Careful family law drafters keep lifestyle language short, or leave it out, so it doesn’t distract from the financial terms.
What makes a Texas prenup unenforceable
A Texas prenup is unenforceable only if the spouse challenging it proves one of two things under Section 4.006(a). Either they didn’t sign voluntarily, or the agreement was unconscionable when signed and every disclosure safeguard failed. The burden sits with the spouse attacking the agreement, not the one relying on it.
The second defense is narrower than many people expect. The challenger must show the agreement was unconscionable and that, before signing, they (A) didn’t get fair and reasonable disclosure of the other party’s property and debts, (B) didn’t voluntarily waive further disclosure in writing, and (C) didn’t have, and couldn’t reasonably have had, adequate knowledge of those finances. Missing disclosure alone isn’t enough. A written waiver of disclosure, or real knowledge of the other person’s financial picture, can defeat the challenge.
Two more rules shape these cases. Unconscionability is decided by the judge as a matter of law, not by a jury (Section 4.006(b)). And these are the only defenses available, which shuts out common law defenses (Section 4.006(c)).
| Can a Texas prenup… | Answer | Family Code |
|---|---|---|
| Keep a business or salary separate? | Yes | 4.003(a)(1), (3) |
| Waive spousal support? | Yes | 4.003(a)(4) |
| Decide who gets life insurance? | Yes | 4.003(a)(6) |
| Limit or waive child support? | No | 4.003(b) |
| Decide custody in advance? | No, the court decides best interest | 153.002 |
| Require an illegal act? | No | 4.003(a)(8) |
Signing, changing and timing rules
A Texas prenup must be in writing and signed by both parties. It’s enforceable without consideration (Section 4.002) and takes effect on marriage (Section 4.004). The statute doesn’t require notarization, a waiting period or separate lawyers. Each of those can still help show the signing was voluntary.
After the wedding, the agreement can be amended or revoked only by a written agreement signed by both spouses (Section 4.005). Any statute of limitations on a claim under the agreement is paused during the marriage. Laches and estoppel can still apply, though (Section 4.008). If the marriage turns out to be void, the agreement is enforced only as far as needed to avoid an inequitable result (Section 4.007).
One retirement detail trips people up. Many employer plans require a spouse’s written consent to waive survivor benefits, and federal rules say a consent signed before marriage doesn’t count (26 CFR 1.401(a)-20, Q&A-28). If your prenup waives those benefits, plan on signing the plan’s own consent form after the wedding. Couples who married without a prenup can use a postmarital agreement, which has similar enforcement rules.
How to write a prenup that holds up
The strongest prenuptial agreements are built around the enforcement rules, not just the wish list. That means a written schedule of each person’s assets, debts and income attached to the agreement. Add a signed acknowledgment of what was disclosed. If either of you would rather not exchange every statement, say so in a written, voluntary waiver of further disclosure.
Time matters too. Give the other person the draft weeks before the wedding, not days. No statute requires it, but a rushed signing invites a voluntariness dispute. Separate legal counsel for each of you isn’t required either. Two lawyers make it harder to claim later that someone didn’t understand the deal. Finally, sign the matching will, trust or beneficiary changes so the estate plan says what the prenup promises.
If you’re engaged and want to talk through what your agreement should cover, our attorneys draft and review premarital agreements for couples in Austin, Buda, Bastrop, New Braunfels and Victoria. This article is general information, not legal advice for your situation. We’re glad to answer your questions in a calm, no-pressure consultation at (512) 400-2350.
Frequently asked questions
What voids a prenup in Texas?
A Texas prenup is unenforceable if the challenging spouse proves they didn’t sign voluntarily, or that it was unconscionable when signed and they got no fair disclosure, signed no written waiver of disclosure and had no adequate knowledge of the other spouse’s finances (Family Code 4.006). Any term limiting child support is unenforceable on its own.
Can a prenup waive alimony in Texas?
Yes. Family Code 4.003(a)(4) lets couples modify or eliminate spousal support in a premarital agreement. Court-ordered maintenance is already limited in Texas, often to marriages of 10 years or longer, so a waiver mostly removes a narrow safety net. It should be signed with full knowledge of the other spouse’s finances.
Can a prenup decide custody in Texas?
No. Custody, called conservatorship in Texas, is decided on the child’s best interest at the time of the case (Family Code 153.002). A prenup also can’t adversely affect a child’s right to support under 4.003(b), so parenting and support terms are set by agreement or court order when the case is filed.
Does a Texas prenup have to be notarized?
No. Family Code 4.002 requires only that a premarital agreement be in writing and signed by both parties, and it’s enforceable without consideration. Notarized signatures, separate attorneys and time to review aren’t required, but they make it harder for either spouse to argue later that the signing wasn’t voluntary.
Can you change a prenup after the wedding?
Yes, but only in writing. Under Family Code 4.005, a premarital agreement can be amended or revoked after marriage only by a written agreement signed by both spouses, and no consideration is needed. Spoken promises don’t change it. Couples without a prenup can sign a postmarital agreement instead.