Oklahoma Prenuptial Agreement Laws: Enforceability and Limits

Oklahoma enforces prenuptial (antenuptial) agreements mainly through court decisions rather than a dedicated statute. The Oklahoma Supreme Court held in Freeman v. Freeman, 565 P.2d 365 (Okla. 1977), that "an antenuptial agreement which contemplates possible divorce is enforceable," and the divorce property statute, 43 O.S. 121(B), divides jointly acquired property "subject to a valid antenuptial contract in writing."

Information last verified on 2026-10-08. This article has not been reviewed by a licensed lawyer.

Jurisdiction scope: This article covers premarital (antenuptial) agreements under Oklahoma case law, 43 O.S. 121, 84 O.S. 44 and the statute of frauds, 15 O.S. 136. It does not cover notarization or signing formalities, waiting periods, independent-counsel rules, child support or custody terms, amendment or revocation, time limits, postnuptial agreements, or other states' law. It is not a drafting guide.

Which law governs prenups in Oklahoma?

The statutes cited on this page do not adopt the Uniform Premarital Agreement Act or a similar code for prenups. Oklahoma's rules come from two sources:

• Court decisions, chiefly Freeman v. Freeman, 565 P.2d 365 (Okla. 1977), from the Oklahoma Supreme Court, and Estate of Burgess, 646 P.2d 623 (Okla. Civ. App. 1982), from the Court of Civil Appeals.
• Statutes that recognize written agreements: the divorce property section, 43 O.S. 121(B), and the will section, 84 O.S. 44(B)(1).

Oklahoma law calls these agreements "antenuptial" contracts. The term means the same thing as prenuptial or premarital.

Does an Oklahoma prenup have to be in writing?

Yes. Oklahoma's statute of frauds, 15 O.S. 136(3), makes "an agreement made upon consideration of marriage, other than a mutual promise to marry," invalid unless it, or some note or memorandum of it, is in writing and subscribed by the party to be charged or that party's agent.

The two prenup statutes also refer to written agreements. 43 O.S. 121(B) directs the divorce court to divide jointly acquired property "subject to a valid antenuptial contract in writing." 84 O.S. 44(B)(1) provides that "a will shall be subservient to any antenuptial marriage contract in writing."

On consideration, Burgess states: "Like other contracts, antenuptial agreements must be supported by consideration, though the marriage itself will ordinarily suffice to meet this requirement unless the circumstances dictate otherwise."

This page does not cover whether an Oklahoma prenup must be notarized or witnessed. A lawyer licensed in Oklahoma can draft or review an agreement and advise on how it should be signed.

Are prenups that plan for divorce enforceable?

Yes, under Freeman. The Oklahoma Supreme Court stated: "Thus, an antenuptial agreement which contemplates possible divorce is enforceable." In that case the court found full disclosure where the agreement listed the husband's holdings and the wife initialed them.

Justice Doolin, joined in his views by three other justices, wrote a special concurrence. It said that provisions altering support obligations imposed by law should not be upheld. That view is stated in the concurrence, not as the court's holding.

When an Oklahoma court may refuse to enforce a prenup

Fraud, duress and overreaching

Burgess summarizes the grounds for avoiding an agreement:

"...ante-nuptial contracts can be avoided by a showing of fraud, duress, coercion, overreaching, and the like. It is settled, though, that fraud is never presumed, and the party attacking the contract's validity must prove it. Furthermore, the proof of fraud must rise to the standard of 'clear and convincing' evidence."

The burden is on the spouse attacking the agreement.

The Burgess three-question test

Burgess adopted three questions, drawn from a law-review note, as guidance for reviewing an agreement:

"1. Is fair and reasonable provision made for the [party opposing the contract]? 2. If not, was a full, fair, and frank disclosure of the [other spouse's] worth made before execution of the contract? 3. If neither of the above, did the [party challenging the contract] in fact have a generally accurate knowledge of [the other's] worth?"

The questions run in order. Fair provision, full disclosure, or the challenger's own accurate knowledge of the other's worth each bear on whether the agreement stands.

Issues this page does not cover

This page does not cover whether Oklahoma requires a waiting period before signing, whether each party needs a separate lawyer, how Oklahoma courts treat an agreement that is unfair when enforced, or how they treat a waiver of alimony. Ask an Oklahoma lawyer about those points for a specific agreement. For how alimony works without an agreement, see Oklahoma alimony laws.

What a prenup cannot waive in Oklahoma

Burgess, citing earlier Oklahoma decisions, states that homestead rights cannot be waived by antenuptial contract, and neither can the statutory widow's or family allowance during the administration of an estate. Among the rights that may be waived, the opinion lists the right to inherit under the statute governing intestate succession. Burgess noted that these rules were not challenged in that appeal.

This page does not cover how Oklahoma treats prenup terms on child support or custody.

How Oklahoma divides property without a prenup

Oklahoma divides property by equitable distribution, not community property. Under 43 O.S. 121(B), the court confirms each spouse's property owned before the marriage or acquired separately, and as to jointly acquired property "the court shall, subject to a valid antenuptial contract in writing, make such division between the parties as may appear just and reasonable." See Oklahoma divorce laws.

Disclaimer: This article provides general legal information about premarital (antenuptial) agreements under Oklahoma law, including 43 O.S. 121, 84 O.S. 44 and published Oklahoma decisions. It is not legal advice and is not a template or drafting guide. The information was verified on 2026-10-08, and the law can change. For advice about a specific agreement, consult a lawyer licensed in Oklahoma.

Related

• Prenuptial agreement laws in every state
• Oklahoma divorce laws
• Oklahoma alimony laws

Last updated: 2026-10-08.

Frequently Asked Questions

Are prenups enforceable in Oklahoma?

Yes. The Oklahoma Supreme Court held in Freeman v. Freeman, 565 P.2d 365 (Okla. 1977), that an antenuptial agreement contemplating possible divorce is enforceable, and 43 O.S. 121(B) divides marital property subject to a valid written antenuptial contract.

Does Oklahoma follow the Uniform Premarital Agreement Act?

No uniform premarital agreement act appears in Oklahoma's marriage, contracts, or wills and succession titles (Titles 43, 15 and 84). Oklahoma prenup law comes from court decisions such as Freeman v. Freeman and Estate of Burgess, plus 43 O.S. 121(B), 84 O.S. 44 and the statute of frauds, 15 O.S. 136.

How do you challenge a prenup in Oklahoma?

Estate of Burgess, 646 P.2d 623 (Okla. Civ. App. 1982), says an agreement can be avoided for fraud, duress, coercion or overreaching, but fraud must be proved by clear and convincing evidence.

Does a prenup override a will in Oklahoma?

84 O.S. 44(B)(1) provides that a will is subservient to any antenuptial marriage contract in writing.

Can a prenup waive homestead rights in Oklahoma?

Estate of Burgess, citing earlier Oklahoma decisions, says homestead rights and the statutory widow's or family allowance cannot be waived by antenuptial contract, while the right to an intestate share can be.