Not every couple signs a prenup before the wedding, and plans change after marriage. A spouse inherits family land in the Hill Country. A business that started as a side project in a New Braunfels garage takes off. One spouse leaves work to raise children, or a couple decides to make a fresh start after a hard season. Texas law lets married couples address these changes with a postnuptial agreement, which the Family Code calls a marital property agreement. This page explains what Comal County couples can accomplish with one and how to do it carefully.
The Types of Texas Marital Property Agreements
Texas Family Code Chapter 4, Subchapter C, allows several kinds of agreements between spouses. The most common are:
| Agreement | What it does |
|---|---|
| Partition and exchange | Divides some or all existing or future community property into each spouse’s separate property |
| Income from separate property | Agrees that income or property arising from one spouse’s separate property will stay separate |
| Conversion to community | Converts one spouse’s separate property into community property |
These tools can be combined in one document. For example, a couple might partition a brokerage account and agree that future income from a rental house will remain separate.
Partition and Exchange Agreements
A partition agreement lets spouses decide that certain community property will become the separate property of one spouse. Couples use partitions to:
- Protect a business so its future growth belongs to the owner spouse
- Clarify ownership of a home, vehicles or investment accounts
- Plan for estate tax or inheritance goals
- Separate finances when one spouse has business risks or significant debts
Income From Separate Property
By default, rent, dividends and interest earned on separate property during marriage are community property. That surprises many couples. A spouse who owns rental homes or inherited investments can use a marital agreement to keep that income separate, which also makes tracing simpler.
Converting Separate Property to Community
Sometimes spouses want to go the other way and make separate property into community property, for example, to share a home one spouse owned before the marriage. Texas law imposes extra requirements for this kind of agreement. It must be in writing, signed by both spouses, identify the property being converted, and specify that the property is being converted to community property. The law also lists a required disclosure statement about the legal effect. Agreements that leave out these elements can fail.
Requirements for a Valid Postnup
A Texas marital agreement must be in writing and signed by both spouses. No additional payment or other consideration is needed. The standards for enforcing a partition or exchange agreement are similar to those for premarital agreements under § 4.006: a spouse who wants to avoid it generally must prove it was signed involuntarily, or that it was unconscionable and the spouse did not receive fair disclosure, did not waive disclosure in writing, and did not otherwise know about the other spouse’s property and obligations.
Because spouses owe each other a high level of trust, postnups are often examined closely. Steps that help include:
- Full financial disclosure, with schedules of assets, debts and income
- Separate attorneys for each spouse
- Plain-language terms that both spouses understand
- No pressure or ultimatums, such as signing during a crisis or under a threat of divorce
- Time to review before signing
When a Postnup Makes Sense for Comal County Couples
Some situations we commonly discuss with married couples in New Braunfels and Comal County include:
A Growing Family Business
Comal County’s fast growth has created opportunities for contractors, restaurants, real estate firms and service businesses. If one spouse’s business is becoming valuable, a postnup can define ownership and reduce the risk that a future divorce turns into a lengthy fight over valuation. See our page on business in divorce.
An Inheritance or Family Land
Inherited property is already separate, but the income it produces and any improvements funded with community money can become complicated. A marital agreement can simplify those questions and protect land meant to stay in one family.
Reconciliation After a Separation
Some couples reconcile after a difficult period and want clear financial terms going forward. A postnup can provide that reassurance. It should be fair and voluntary, not a condition imposed during an emotional crisis.
Blended Families and Later-Life Marriages
Spouses in second marriages, or couples approaching retirement, often want to protect children from earlier relationships. A postnup can work with wills, trusts and beneficiary designations. Our page on gray divorce covers issues that arise for older couples.
No Prenup Before the Wedding
A couple who ran out of time before the wedding can accomplish many of the same goals with a postnup. Our prenuptial agreements page explains what a premarital agreement typically covers.
Steps to Get Started
- Talk with your spouse about goals before involving lawyers.
- List assets, debts and income, with recent statements.
- Identify which property you consider separate and why, such as gifts, inheritances or assets owned before marriage.
- Each spouse meets with their own attorney.
- Review a draft together, revise, and sign only when both of you are comfortable.
Limits on What a Postnup Can Do
Like a prenup, a postnup cannot reduce a child’s right to support or bind a court on custody. It also cannot defeat creditors. A partition made to defraud a creditor is void as to that creditor’s existing claims. And a postnup should not be treated as a quiet way to prepare for divorce. Courts look closely at agreements that one spouse signs without understanding the effect.
How a Postnup Affects a Future Divorce
If a marriage with a valid postnup later ends, the partitioned property is generally treated as each spouse’s separate property, which a divorce court cannot award to the other spouse. Only the remaining community estate is divided under the “just and right” standard. A clear agreement can save significant time and expense in a later divorce. A poorly drafted one can create its own litigation. Our community property page explains how the rest of the estate is divided.
Talk With a New Braunfels Family Lawyer About a Postnup
A postnuptial agreement can bring clarity and peace of mind when it is fair, carefully drafted and fully understood. Our family law attorneys help married couples in New Braunfels, Comal County and the surrounding communities decide whether a marital agreement fits their goals, and draft or review one. Call (830) 302-4071 for a free consultation by phone, video or in person. Hablamos español.
Frequently Asked Questions
Is a postnuptial agreement legal in Texas?
Yes. Texas law has allowed spouses to partition and exchange community property since the state constitution was amended to permit it. Chapter 4 of the Family Code sets the requirements for these marital property agreements.
Can a postnup be used to avoid creditors?
No. A partition or exchange agreement is void as to a creditor’s preexisting claims if it was made to defraud that creditor. Spouses cannot use a postnup to move assets out of reach of existing debts.
Does a postnup have to be recorded?
It does not have to be recorded to be valid between the spouses. However, if it affects real property, recording it in the county where the property is located, such as with the Comal County Clerk, may be important to give notice to third parties.
Can we use a postnup to settle our divorce before filing?
Spouses sometimes reach a full property agreement before or during a divorce, but that is usually done through a mediated settlement or agreement incident to divorce rather than a standalone postnup. The right document depends on your goals. Our divorce mediation page explains the settlement process.
Last reviewed November 13, 2026. General information only, not legal advice.