Oklahoma: Prenuptial Agreement Requirements

Requirements one by one

Oklahoma uses statutes plus a case-law test

Oklahoma has not enacted the Uniform Premarital Agreement Act or the Uniform
Premarital and Marital Agreements Act. The framework instead combines the
Statute of Frauds in 15 O.S. § 136, the written-antenuptial-contract language
in 43 O.S. § 121 and 84 O.S. § 44, and the enforcement test stated in Matter
of Burgess' Estate and applied in Griffin v. Griffin.

43 O.S. § 121(B) expressly makes division of jointly acquired property subject
to a valid written antenuptial contract. Griffin explains that the 1992
addition of that language removed the earlier public-policy objection to a
prenup governing jointly acquired property.

The agreement must be written and subscribed

Section 15-136 makes an agreement in consideration of marriage invalid unless
the agreement, note, or memorandum is written and subscribed by the party to
be charged. For mutual enforcement, both prospective spouses should sign.

Burgess treats a prenup like other contracts for consideration purposes and
says the marriage itself ordinarily supplies consideration. The parties do not
need a separate exchange merely to support the ordinary property agreement.
The agreement is premised on the contemplated marriage and governs the rights
identified in its operative terms once the marriage occurs.

No universal notary or witness is prescribed

The baseline rule in § 15-136 is the subscribed writing. Oklahoma's governing
prenup statutes and the Burgess line do not add a universal notary,
acknowledgment, witness, attestation, oath, or recording requirement for basic
enforcement between the parties.

Other instruments used to carry out the agreement—such as deeds, beneficiary
designations, or trusts—can have their own execution or recording rules. Those
instrument-specific rules do not change the basic prenup form.

Burgess supplies three alternative financial tests

Burgess does not impose a UPAA checklist under which lack of disclosure is
automatically fatal. Instead, the proponent must establish at least one of
three alternatives: fair and reasonable provision for the challenger; full,
fair, and frank disclosure before signing; or the challenger's generally
accurate knowledge of the other prospective spouse's worth.

Griffin confirms that the alternatives are disjunctive. One is enough. It also
explains the burden rules: facial unfairness can shift the burden to the
proponent, while a written recital of full disclosure can create a presumption
that must be overcome by clear and convincing proof of fraud or
misrepresentation.

Oklahoma has no statutory separate-writing disclosure waiver. A clause saying
that disclosure is waived therefore does not replace the Burgess inquiry.

Counsel and timing remain factual protections

Oklahoma law sets no fixed final-draft review period, pre-wedding countdown,
mandatory separate-counsel rule, counsel advisement, or counsel-waiver form for
an ordinary prenup. Griffin treated negotiation time and independent lawyers
as strong evidence supporting enforcement, but it did not turn those facts
into universal statutory prerequisites.

Burgess separately says fraud, duress, coercion, overreaching, and similar
defects can defeat enforcement. A rushed or uncounseled signature therefore
matters to the factual validity inquiry even though Oklahoma has no fixed
number-of-days rule.

The fairness rule comes from case law

Burgess requires at least one of its three alternatives and preserves the
ordinary defenses of fraud, duress, coercion, and overreaching. Griffin applies
that framework and emphasizes the confidential relationship between
prospective spouses, which requires utmost good faith and a high degree of
fairness.

Unlike a UPAA statute, Oklahoma does not codify a general enforcement-time
unconscionability or changed-circumstances second look. The reported cases
apply the agreement's language and the execution circumstances, subject to the
specific substantive limits discussed below.

A valid agreement can waive spousal support

Section 43-121 supplies the ordinary authority to award alimony, but Griffin
enforced an agreement under which neither spouse would seek alimony or support
except for the agreement's scheduled payments. The appellate court reversed
the trial court's support and property awards and required an order consistent
with the prenup.

Oklahoma has not enacted the UPAA provision that permits a public-assistance
support override, nor a prenup statute requiring counsel specifically for an
alimony waiver. The waiver still depends on the validity of the agreement
under Burgess and ordinary contract defenses.

Child support and custody remain court matters

43 O.S. § 118(A) makes the guideline result rebuttably presumed correct in a
child-support proceeding. A prenup cannot eliminate that later statutory and
judicial determination.

43 O.S. § 109(A) requires the court to decide custody from the child's physical,
mental, and moral best interests. The prospective spouses may record present
intentions, but their private agreement cannot bind the court's later custody
decision.

Estate waivers have special limits

84 O.S. § 44(B)(1) recognizes a written antenuptial contract in the surviving-
spouse estate framework. But the probate homestead and family allowance in
58 O.S. §§ 311 and 314 receive separate treatment under Matter of Estate of
Meyers.

Meyers permits an express and voluntary probate-homestead waiver after full
disclosure only where no minor or dependent children are involved; the waiver
must be sufficiently specific. It permits a probate-allowance waiver only when
there are no minor or dependent children and the waiver is clear, express, and
supported by adequate consideration. Fulton later refused to enforce an
allowance waiver because that separate consideration condition was missing.

There is no prenup-specific amendment formula

Oklahoma has no UPAA section allowing amendment or revocation after marriage
through a signed writing enforceable without consideration. Sections
43 O.S. §§ 204-205 regulate interspousal property contracts and limit how spouses may
alter their legal relations after marriage.

The validity of a later change therefore requires separate contract and
family-law analysis, including the original agreement's amendment clause. A
generic clause requiring notarization should not be described as an Oklahoma
statutory rule.

What trips people up

Oklahoma is not a UPAA state. Its disclosure and fairness rules come from
Burgess and later cases, not from a statutory unconscionability checklist.

Disclosure is one route, not the only route. A fair provision or generally
accurate knowledge can satisfy the disjunctive Burgess test even without full,
itemized disclosure.

A blanket estate waiver may fail. Meyers requires specificity and protects
minor or dependent children; a probate-allowance waiver also needs adequate
consideration.

Notarization is not the baseline validity rule. A notary can help prove
authenticity, but § 15-136 requires a subscribed writing and Burgess still
controls enforcement.

Common questions

Can an Oklahoma prenup govern jointly acquired property?

Yes. 43 O.S. § 121(B) expressly makes the court's division of jointly acquired
property subject to a valid antenuptial contract in writing. Griffin held that
the current language removes the former public-policy bar.

Is exact dollar-by-dollar disclosure always required?

No. Griffin says fair disclosure need not be a detailed net-worth statement,
and Burgess's three alternatives are disjunctive. The proponent still must
establish fair provision, full/fair/frank disclosure, or generally accurate
knowledge.

Can an Oklahoma prenup waive alimony?

Yes, if the agreement is otherwise valid. Griffin enforced express alimony and
support waivers and reversed a contrary support award.

Can a prenup waive every surviving-spouse benefit?

No blanket answer is safe. Section 84-44 recognizes written antenuptial
contracts, but Meyers imposes additional conditions on probate-homestead and
family-allowance waivers, and Fulton refused an allowance waiver that lacked
adequate consideration.

Statutes and sources

• 15 O.S. § 136. Current official writing and subscription rule for an
  agreement made in consideration of marriage. Official statute
  (accessed July 28, 2026).
• 43 O.S. §§ 109, 118, 121, 204-205. Current official custody,
  child-support, written-antenuptial-contract, and interspousal-contract
  provisions. Official statutes
  (accessed July 28, 2026).
• 58 O.S. §§ 311, 314. Current probate homestead and family-allowance
  statutes. Official statutes
  (accessed July 28, 2026).
• 84 O.S. § 44. Current surviving-spouse and written-antenuptial-contract
  provision. Official statute
  (accessed July 28, 2026).
• Matter of Burgess' Estate, 1982 OK CIV APP 22, 646 P.2d 623. Leading
  disjunctive enforceability test and ordinary contract defenses. Official
  opinion
  (accessed July 28, 2026).
• Griffin v. Griffin, 2004 OK CIV APP 58, 94 P.3d 96. Applies Burgess,
  explains burden rules, and enforces property and support waivers. Published
  opinion (accessed July 28,
  2026).
• Matter of Estate of Meyers, 1985 OK 87, 709 P.2d 1044. Conditions for
  probate-homestead and allowance waivers. Published opinion
  (accessed July 28, 2026).
• Fulton v. Estate of Fulton, 2013 OK CIV APP 55, 307 P.3d 382. Refuses a
  probate-allowance waiver lacking adequate consideration. Published
  opinion (accessed July 28,
  2026).

Disclaimer

This page is general legal information about state-law prenuptial-agreement
requirements, not legal advice about whether a particular agreement or term
is valid, fair, or enforceable. Courts apply voluntariness, disclosure,
unconscionability, public-policy, and changed-circumstances rules to specific
facts, and child support and custody remain subject to the child's interests
and the court's authority. Execution rules, counsel protections, waiting
periods, and support limits vary sharply by state. Verified against the cited
statutes and cases on the date shown; both prospective spouses should obtain
separate advice from licensed family-law counsel before signing or relying on
an agreement.