TEXAS UNIFORM PREMARITAL AGREEMENT ACT
(TEX. FAMILY CODE SEC. 4.001 et. seq)
§ 4.001. Definitions
In this subchapter:
(1) "Premarital agreement" means an agreement between prospective spouses made in contemplation of marriage and to be effective on marriage.
(2) "Property" means an interest, present or future, legal or equitable, vested or contingent, in real or personal property, including income and earnings.
§ 4.002. Formalities
A premarital agreement must be in writing and signed by both parties. The agreement is
enforceable without consideration.
§ 4.003. Content
(a) The parties to a premarital agreement may contract with respect to:
(1) the rights and obligations of each of the parties in any of the property of either or both of them
whenever and wherever acquired or located;
(2) the right to buy, sell, use, transfer, exchange, abandon, lease, consume, expend, assign, create a security interest in, mortgage, encumber, dispose of, or otherwise manage and control property;
(3) the disposition of property on separation, marital dissolution, death, or the occurrence or nonoccurrence of any other event;
(4) the modification or elimination of spousal support;
(5) the making of a will, trust, or other arrangement to carry out the provisions of the agreement;
(6) the ownership rights in and disposition of the death benefit from a life insurance policy;
(7) the choice of law governing the construction of the agreement; and
(8) any other matter, including their personal rights and obligations, not in violation of public policy or a statute imposing a criminal penalty.
(b) The right of a child to support may not be adversely affected by a premarital agreement.
§ 4.004. Effect of Marriage
A premarital agreement becomes effective on marriage.
§ 4.005. Amendment or Revocation
After marriage, a premarital agreement may be amended or revoked only by a written agreement signed by the parties. The amended agreement or the revocation is enforceable without consideration.
§ 4.006. Enforcement
(a) A premarital agreement is not enforceable if the party against whom enforcement is requested proves that:
(1) the party did not sign the agreement voluntarily; or
(2) the agreement was unconscionable when it was signed and, before signing the agreement, that party:
(A) was not provided a fair and reasonable disclosure of the property or financial obligations of the other party;
(B) did not voluntarily and expressly waive, in writing, any right to disclosure of the property or financial obligations of the other party beyond the disclosure provided; and
(C) did not have, or reasonably could not have had, adequate knowledge of the property or financial obligations of the other party.
(b) An issue of unconscionability of a premarital agreement shall be decided by the court as a matter of law.
(c) The remedies and defenses in this section are the exclusive remedies or defenses, including common law remedies or defenses.
§ 4.007. Enforcement: Void Marriage
If a marriage is determined to be void, an agreement that would otherwise have been a premarital agreement is enforceable only to the extent necessary to avoid an inequitable result.
§ 4.008. Limitation of Actions
A statute of limitations applicable to an action asserting a claim for relief under a premarital agreement is tolled during the marriage of the parties to the agreement. However, equitable defenses limiting the time for enforcement, including laches and estoppel, are available to either party.
§ 4.009. Application and Construction
This subchapter shall be applied and construed to effect its general purpose to make uniform the law with respect to the subject of this subchapter among states enacting these provisions.
§ 4.010. Short Title
This subchapter may be cited as the Uniform Premarital Agreement Act.
TEXAS CONSTITUTION

Article 16 - GENERAL PROVISIONS Section 15 -
SEPARATE AND COMMUNITY PROPERTY
All property, both real and personal, of a spouse owned or claimed before marriage, and that acquired afterward by gift, devise or descent, shall be the separate property of that spouse; and laws shall be passed more clearly defining the rights of the spouses, in relation to separate and community property; provided that persons about to marry and spouses, without the intention to defraud pre-existing creditors, may by written instrument from time to time partition between themselves all or part of their property, then existing or to be acquired, or exchange between themselves the community interest of one spouse or future spouse in any property for the community interest of the other spouse or future spouse in other community property then existing or to be acquired, whereupon the portion or interest set aside to each spouse shall be and constitute a part of the separate property and estate of such spouse or future spouse; spouses also may from time to time, by written instrument, agree between themselves that the income or property from all or part of the separate property then owned or which thereafter might be acquired by only one of them, shall be the separate property of that spouse; if one spouse makes a gift of property to the other that gift is presumed to include all the income or property which might arise from that gift of property; spouses may agree in writing that all or part of their community property becomes the property of the surviving spouse on the death of a spouse; and spouses may agree in writing that all or part of the separate property owned by either or both of them shall be the spouses' community property. (Amended Nov. 2, 1948, Nov. 4, 1980, Nov. 3, 1987, and Nov. 2, 1999.)