Texas calls them premarital and marital property agreements (Chapter 4 of the Family Code). Less a bet against the marriage than a property ruleset the two of you write together, instead of inheriting the default.
In Texas, a prenuptial agreement is a premarital agreement under Chapter 4 of the Texas Family Code: a written contract, signed by both parties before the wedding, that sets each spouse's property rights and takes effect on marriage. Married couples can reach similar terms afterward through a marital property (partition or exchange) agreement.
A premarital agreement must be in writing and signed by both parties (nothing more), and it is enforceable without consideration. Under § 4.004 it becomes effective on marriage; if the wedding never happens, the agreement never takes effect.
Parties may contract about property rights and management, disposition on separation, divorce, or death, the modification or elimination of spousal support, wills and trusts, life-insurance death benefits, and choice of law: any matter not against public policy. Subsection (b) draws the hard line: a child's right to support may not be adversely affected.
A premarital agreement fails only if the challenger proves it was signed involuntarily, or that it was unconscionable when signed and there was no fair disclosure, no written waiver of disclosure, and no adequate knowledge of the other party's finances. Unconscionability is decided by the court as a matter of law.
Spouses may at any time partition or exchange community property between themselves (existing or to be acquired). Property transferred under the agreement becomes the receiving spouse's separate property, and future earnings and income from it can be made separate too.
Partition and exchange agreements face the same enforcement structure as prenups: voluntariness, and the unconscionability-plus-disclosure test. The formalities in § 4.104 are the same as well (a writing signed by both spouses, no consideration required).
Texas is a community-property state: without an agreement, the Family Code decides what belongs to the marriage and what belongs to each spouse. An agreement under Chapter 4 is the lawful way a couple redraws that default, before the wedding or during the marriage.
The classic prenup: a contract between prospective spouses under §§ 4.001-4.002, in writing, signed by both, effective on marriage. It sets the property rules before the property questions exist.
We handle this when a wedding is coming and there is a business, a disparity, a prior marriage, or family wealth worth planning around.
The Texas postnup. Under § 4.102, spouses may divide community property between themselves (existing or future), and what each receives becomes separate property.
We handle this when the couple is already married and wants the clarity a prenup would have provided. See property division.
Under the Texas default, income arising from separate property during marriage generally becomes community property. Section 4.103 lets spouses agree it stays with the owner instead.
We handle this when one spouse owns a business, investments, or an inheritance whose income would otherwise flow into the community.
The reverse direction: under § 4.202, spouses may agree to convert separate property into community property (a tool that appears most often in estate planning, and one with its own strict formalities).
We handle this when the estate plan calls for it, and only after the consequences are fully on the table.
The other side's lawyer drafted it; someone whose only client is you should read it. We review proposed agreements clause by clause: what it says, what it waives, what the disclosure actually shows.
We handle this when you have been given a draft to sign, or an existing agreement you have never had independently explained.
Circumstances change. Under § 4.005, a premarital agreement can be amended or revoked after marriage, but only by a written agreement signed by both parties. Handshake modifications do not count.
We handle this when an existing agreement no longer fits the marriage it was written for.
What are you protecting, when is the wedding, and does the other party have counsel? The calendar matters: an agreement negotiated over weeks looks voluntary; one produced days before the ceremony invites a challenge.
Both parties' assets, debts, and income go into disclosure schedules attached to the agreement. Fair and reasonable disclosure is the backbone of the § 4.006 enforcement test: this step is where enforceability is actually built.
The terms themselves: what stays separate, how income is characterized, what happens on divorce or death, whether spousal support is modified or eliminated, and how the agreement coordinates with wills and beneficiary designations.
The draft goes to your future spouse and, ideally, their own independent attorney. Questions get answered, terms get negotiated, revisions get made. On the record, without pressure.
Both parties sign, the disclosure schedules are attached, and the execution is documented. A premarital agreement takes effect on the marriage under § 4.004; a marital property agreement, once validly signed, governs from there.
The document everyone calls a prenup is, in the Texas Family Code, a premarital agreement: a contract between prospective spouses “made in contemplation of marriage and to be effective on marriage,” in the words of § 4.001. Texas adopted the Uniform Premarital Agreement Act and codified it as Chapter 4, which means the rules here are not folklore or negotiating custom. They are written down, they are short, and they reward couples who read them before drafting rather than after signing.
The formalities are deliberately light. Under § 4.002, a premarital agreement must be in writing and signed by both parties: that is the whole list, and no consideration is required. Under § 4.004, it becomes effective on marriage; call off the wedding and the agreement simply never takes effect. After the wedding, § 4.005 allows amendment or revocation, but only by another written agreement signed by both spouses.
That lightness is misleading. The statute asks little at signing and much at enforcement: the real tests live in § 4.006, and they are the reason a well-drafted agreement looks very different from a form pulled off the internet the month before a wedding.
They are written down, they are short, and they reward couples who read them before drafting rather than after signing.
Texas is a community-property state. Marry without an agreement and the Family Code supplies your property rules for you: what the marriage owns, what each spouse keeps, and how a court sorts the two if the marriage ends by divorce or death. For many couples the default works fine. For others it works quietly against them for years: a business whose growth accrues to the community, income from an inheritance that generally flows into the marital estate rather than staying with the heir, retirement accounts blending contributions from before and after the wedding.
A premarital agreement is the couple’s chance to write their own characterization rules while they agree: to decide, on the front end and in plain terms, what stays separate, what becomes shared, and how the accounting will work. Property division is the hub for what happens when the default rules run their course; this page is about replacing them before they start.
Section 4.003 sets the menu, and it is broad. Prospective spouses may contract about the rights and obligations of each party in any property, whenever and wherever acquired; the right to manage, sell, mortgage, or otherwise control it; the disposition of property on separation, divorce, death, or any other event; the modification or elimination of spousal support; the making of wills and trusts to carry out the agreement; ownership of life-insurance death benefits; the choice of law governing the agreement; and any other matter (including personal rights and obligations) that does not violate public policy or a criminal statute.
Read that list again and notice what it is: nearly the entire financial architecture of a marriage, available for private ordering. The spousal-support clause alone is a common reason to sign; the death-and-estate provisions are an underrated second, because a premarital agreement can coordinate with an estate plan in ways the community-property default cannot.
No drafting cleverness gets around it: child support belongs to the child, and the Texas Legislature took it off the table entirely.
One line in the statute is absolute. Under § 4.003(b), the right of a child to support may not be adversely affected by a premarital agreement. No drafting cleverness gets around it: child support belongs to the child, and the Texas Legislature took it off the table entirely. Conservatorship and possession are similarly beyond a prenup’s reach. Courts decide those questions on the child’s best interest at the time of the case, not from a contract signed years before the child existed. And any term that violates public policy or a criminal statute fails on its own.
Already married does not mean too late. Subchapter B of Chapter 4 gives spouses their own set of tools, and together they are what most people mean by a “postnup.”
The centerpiece is the partition or exchange agreement under § 4.102. At any time, spouses may partition or exchange between themselves all or part of their community property, including property they have not acquired yet. Whatever a spouse receives under the agreement becomes that spouse’s separate property, and the agreement can provide that future earnings and income from the transferred property stay separate as well. It is the instrument that lets a married couple draw the line a prenup would have drawn, just later.
Alongside it sits the § 4.103 agreement: spouses may agree that income or property arising from one spouse’s separate property (owned now or acquired later) remains the owner’s separate property. Under the Texas default, that income generally becomes community property during the marriage, which surprises nearly every business owner and heir who learns it; § 4.103 exists precisely so couples can choose otherwise. The formalities for both instruments, set by § 4.104, mirror the prenup’s: in writing, signed by both spouses, no consideration needed.
There is also a road in the opposite direction. Under § 4.202, spouses may agree to convert separate property into community property: a move that occasionally makes sense in estate planning, and one the statute surrounds with strict formalities and mandatory warnings, because it gives up rights rather than reserving them. It is not a document to sign casually, and we treat it accordingly.
It is the instrument that lets a married couple draw the line a prenup would have drawn, just later.
Here is the sentence some firms will not write: no lawyer can promise you an unbreakable agreement, and you should be wary of any who tries. What Texas law offers instead is something more useful: a narrow, known list of ways an agreement can fail, which means a drafting process that can be aimed squarely at each one.
Under § 4.006, a premarital agreement is unenforceable only if the party resisting it proves one of two things. First, that they did not sign voluntarily. Second, that the agreement was unconscionable when signed and (all three together) they were not given fair and reasonable disclosure of the other party’s property and financial obligations, they did not voluntarily and expressly waive disclosure in writing, and they did not have, and reasonably could not have had, adequate knowledge of the other party’s finances. The “and” carries the weight: genuine disclosure closes the second door by itself. Unconscionability is decided by the court as a matter of law, and the statute makes these the exclusive remedies. There is no general fairness override waiting in the wings. Partition and exchange agreements face the same structure under § 4.105.
The statute asks little at signing and much at enforcement. Good drafting answers the enforcement questions years early.
Notice also where the burden sits: on the person challenging the agreement, not the person relying on it. That allocation is the quiet advantage of doing the work properly the first time.
We draft to the statute’s questions, in order. Voluntariness is protected with time (disclosure and drafts exchanged weeks or months before the wedding, never a signature scene the night before the rehearsal dinner) and with independent review, because an agreement the other party’s own lawyer examined is a hard thing to call coerced. The disclosure test is answered with schedules: both parties’ assets, debts, and income, itemized and attached, so that “I didn’t know what he had” has a written rebuttal with page numbers. Execution is documented. None of this is exotic. It is the difference between an agreement built to be challenged and one built to be enforced. And it is why the cheap version is often the expensive version, several years later.
The stereotype is a wealthy spouse protecting a fortune. The reality across North Texas is more ordinary and more varied.
The stereotype is a wealthy spouse protecting a fortune. The reality across North Texas is more ordinary and more varied. Business owners sign because a company’s growth during marriage (and often the income it throws off) accrues to the community by default, and because a divorce court valuing a business is an outcome worth designing around in advance. Second marriages sign because there are children from a prior marriage whose inheritance the couple wants protected, and because two settled adults often arrive with two settled estates. Couples with disparate assets or incomes sign to make expectations explicit while goodwill is at its peak, rather than discovering them in a courtroom. Families with generational wealth sign because an inheritance is separate property, but the income it generates during marriage generally is not, a distinction that has surprised heirs for as long as Texas has had a Family Code.
What these couples share is not pessimism. It is the same instinct that buys insurance on a house no one expects to burn: the recognition that the default rules were written for everyone, and their situation is not everyone’s.
For most couples, the hardest clause in the agreement is the first sentence over dinner. A few things make the conversation easier, and they happen to be the same things that make the agreement stronger.
A few things make the conversation easier, and they happen to be the same things that make the agreement stronger.
Raise it early: months out, alongside the venue and the guest list, so it reads as planning rather than a reaction to anything. Frame it accurately: the agreement carries both signatures and protects in both directions, and it is the two of you writing your own property rules while you agree, instead of inheriting a default written by the legislature for everyone. Lead with transparency, because the process runs on it anyway: full financial disclosure is not just the statute’s test, it is a fairly good foundation for a marriage. And offer independent review rather than resisting it: the draft is a proposal, not an ultimatum, and the other side’s lawyer improving a clause now is far cheaper than that same lawyer attacking it later.
Couples sometimes arrive here mid-disagreement about whether to have one at all. That, too, is negotiable terrain. And for couples who want structure for the negotiation itself, mediation offers a table where the terms can be worked through without the engagement turning adversarial.
Raise it early: months out, alongside the venue and the guest list, so it reads as planning rather than a reaction to anything.
Half of this work is not drafting at all. If your future spouse’s attorney sent you a draft, the document was written by someone whose client is not you (competently and ethically, perhaps, but with one party’s priorities). Before you sign, someone on your side should read it: what it says, what it waives, whether the disclosure schedules actually disclose anything, which terms are standard and which are aggressive, and where there is room to negotiate. There usually is.
The same review applies to existing agreements. Couples move to Texas carrying another state’s prenup and want to know how it reads under Texas law; spouses find a decade-old agreement in a drawer and cannot remember what it does. An agreement can be amended after marriage under § 4.005 (in writing, signed by both), and knowing whether yours should be starts with knowing what it currently says. If the marriage is instead heading toward divorce, the agreement’s terms will frame the property case from the first filing, which makes understanding it early a matter of strategy, not curiosity.
Every agreement matter here starts the same way: a free, fifteen-minute Case Alignment Review with our intake team. It is a fit-and-timeline conversation, not legal advice and not a sales call: your wedding date or your marriage’s circumstances, what you are trying to protect, whether the other party has counsel, and whether we are the right firm for the shape of the work. If we are not, we will say so and point you somewhere better suited.
When the fit is right, the next step is the $275 Strategy Consultation: a working session where an attorney examines your finances and goals and walks you through your rights and options, including what the agreement should cover, what disclosure will require from both sides, and a realistic calendar working back from the wedding date, under attorney-client privilege. From there the engagement follows the sequence above: disclosure, drafting, the other side’s review, and execution.
Two practical notes worth knowing early. First, fees follow complexity, not a menu. The cost estimator can give you an early read, and how retainers work explains the mechanics in plain terms. Second, agreement work is calendar-driven in a way litigation is not: the closer the wedding, the fewer good options, because time itself is part of what makes an agreement voluntary. What the process looks like week to week is mapped on what to expect, and the twelve North Texas counties we practice in are where we do the rest of our family-law work when an agreement is eventually tested. The best time to start is when the question first occurs to you, which, if you are reading this page, is now.
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We handle prenuptial & postnuptial agreements matters across the 12 North Texas counties. We know each docket.
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Every family-law case sits in front of a court whose standing orders, hearing rhythms, and docket preferences vary by county. Which court hears a temporary-orders motion the same week. Which one orders mediation before any contested hearing. That is the local part of practice that does not show up in the statute book.
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