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UT · Manually written guide

Prenup laws in Utah

Utah's Uniform Premarital Agreement Act was recodified into sections 81-3-201 through 81-3-208 effective September 1, 2024.Utah Code § 81-3-202Utah Code § 81-3-203(1)Utah Code § 81-3-205(1)(a)

Utah's current enforcement text uses fraud and disclosure concepts rather than a generic unconscionability formulation, so older citations and borrowed summaries should be checked carefully.Utah Code § 81-3-205(1)(a)

Evidence tiersection verified
Package versionut-2026-07-22.3
Authorities14
Reviewed2026-07-22
Effective through2026-07-22
On this pageExecutionSubjects and limitsFinancial reviewExamplesQuestionsAuthorities

Formation and lifecycle

Execution requirements to investigate

effective date

Utah definitions and 2024 recodification

Utah defines premarital agreement and broadly defines property to include present, future, legal, equitable, vested, contingent, real, personal, income, and earnings interests.

Utah Code § 81-3-201
formalities

Utah writing and signature requirements

A Utah premarital agreement must be in writing and signed by both parties and is enforceable without consideration.

Utah Code § 81-3-202
effective date

Utah effect of marriage

A Utah premarital agreement becomes effective upon marriage.

Utah Code § 81-3-204(1)
amendment revocation

Utah amendment and revocation formalities

After marriage, amendment or revocation requires a written agreement signed by both parties and is enforceable without consideration.

Utah Code § 81-3-204(2)

What the agreement addresses

Permitted subjects and legal limits

permitted subjects

Utah permitted agreement subjects

Utah lists property, disposition, spousal support, life-insurance death benefits, choice of law, and other lawful personal rights and obligations as permitted subjects.

Utah Code § 81-3-203(1)
child support

Utah child-related limitations

A Utah premarital agreement may not affect a child's rights to support, health and medical provider expenses, medical insurance, or child-care coverage.

Utah Code § 81-3-203(2)
public assistance

Utah public-assistance support safeguard

A Utah court may require support to the extent necessary to avoid public-assistance eligibility caused by a premarital support modification or elimination.

Utah Code § 81-3-205(2)
void marriage

Utah void-marriage rule

If a marriage is void, an otherwise premarital agreement is enforceable only as necessary to avoid an inequitable result.

Utah Code § 81-3-206
limitations

Utah limitation-of-actions rule

An applicable limitations period for relief under a Utah premarital agreement is tolled during marriage.

Utah Code § 81-3-207
limitations

Utah uniform construction and recodification history

Utah directs uniform construction among enacting states, subject to Utah's enacted text and authority.

Utah Code § 81-3-208

Process evidence

Financial disclosure, voluntariness, counsel, and timing

voluntariness

Utah voluntary-execution safeguard

The party resisting enforcement in Utah may prove that the agreement was not executed voluntarily.

Utah Code § 81-3-205(1)(a)
financial disclosure

Utah fraud and disclosure safeguard

Utah's second enforcement ground requires fraud at execution together with reasonable-disclosure, written-waiver, and adequate-knowledge conditions.

Utah Code § 81-3-205(1)(b), (3)
financial disclosure

Utah Court of Appeals separate-fraud requirement

Keyes holds that fraud is separate from the three disclosure conditions and all four requirements must be satisfied under Utah's statutory fraud ground.

Keyes v. Keyes, 2015 UT App 114
voluntariness

Utah Supreme Court good-faith negotiation framework

Reese recognizes binding agreements between spouses or prospective spouses when negotiations satisfy Utah's heightened expectations of good faith, honesty, and candor.

Reese v. Reese, 1999 UT 75, 984 P.2d 987

Hypotheticals, not outcomes

Practical examples

These examples show how document facts can intersect with the cited sources. They do not predict a court result.

Example 01

The agreement cites the former title

A recent draft still cites Utah's pre-2024 numbering. The recodification does not itself decide substance, but counsel should update every citation and confirm applicable text.Utah Code § 81-3-202Utah Code § 81-3-205(1)(a)

Ask local counsel

Do the old citations map accurately to the current Title 81 provisions?

Example 02

The alleged financial misstatement

A schedule materially overstates an asset and understates its debt. Utah's enforcement section uses fraud and disclosure concepts that require evidence of the actual representation and knowledge.Utah Code § 81-3-205(1)(a)

Ask local counsel

How does section 81-3-205 apply to the alleged misstatement?

Common starting points

Utah prenup FAQs

Answers are deliberately scoped to the cited evidence package and should be checked against current law.

Where is Utah's act now codified?

The package identifies Title 81, Chapter 3, Part 2 as the current location after the September 1, 2024 recodification.Utah Code § 81-3-202Utah Code § 81-3-203(1)Utah Code § 81-3-205(1)(a)

What is the current formation section?

Utah Code section 81-3-202 supplies the writing and signature formalities.Utah Code § 81-3-202

What is distinctive about Utah enforcement wording?

Section 81-3-205 uses fraud and disclosure concepts rather than a generic unconscionability test.Utah Code § 81-3-205(1)(a)

Prepare for independent advice

Questions for a Utah lawyer

Bring the agreement, every exhibit, prior drafts, disclosure records, and a signing timeline. Then use the source-linked questions as an interview guide.

  1. 01

    Does the document fit the definition, and which interests fall within its property terms?Utah Code § 81-3-201

  2. 02

    Is the complete agreement, including schedules, written and signed by both parties?Utah Code § 81-3-202

  3. 03

    Could the domicile proviso affect the selected law?Utah Code § 81-3-203(1)

  4. 04

    Does any provision attempt to affect a protected child-related right?Utah Code § 81-3-203(2)

  5. 05

    Did the contemplated marriage occur?Utah Code § 81-3-204(1)

  6. 06

    Are all claimed changes written and signed?Utah Code § 81-3-204(2)

  7. 07

    What evidence bears on voluntary execution?Utah Code § 81-3-205(1)(a)

  8. 08

    What evidence addresses the separate fraud requirement and every disclosure condition?Utah Code § 81-3-205(1)(b), (3)

  9. 09

    Could the provision cause public-assistance eligibility?Utah Code § 81-3-205(2)

  10. 10

    How could section 81-3-206 affect relief?Utah Code § 81-3-206

  11. 11

    How does section 81-3-207 affect claim timing?Utah Code § 81-3-207

  12. 12

    Are former Title 30 citations correctly mapped to current Title 81?Utah Code § 81-3-208

  13. 13

    What evidence addresses each disclosure condition and the separate fraud element?Keyes v. Keyes, 2015 UT App 114

  14. 14

    What evidence shows the negotiation process met the Reese framework?Reese v. Reese, 1999 UT 75, 984 P.2d 987

Inspect the evidence

Principal statutes and cases

Every citation label above resolves to one of these records. Open the linked authority and verify the current text with licensed counsel.

effective datestatute

Utah Code § 81-3-201

Utah definitions and 2024 recodification

Utah defines premarital agreement and broadly defines property to include present, future, legal, equitable, vested, contingent, real, personal, income, and earnings interests.

  • The part was renumbered and amended by chapter 366 of the 2024 General Session, effective September 1, 2024.
formalitiesstatute

Utah Code § 81-3-202

Utah writing and signature requirements

A Utah premarital agreement must be in writing and signed by both parties and is enforceable without consideration.

  • The current section is effective September 1, 2024.
permitted subjectsstatute

Utah Code § 81-3-203(1)

Utah permitted agreement subjects

Utah lists property, disposition, spousal support, life-insurance death benefits, choice of law, and other lawful personal rights and obligations as permitted subjects.

  • A court may apply either party's domicile law to construction when fair and equitable.
child supportstatute

Utah Code § 81-3-203(2)

Utah child-related limitations

A Utah premarital agreement may not affect a child's rights to support, health and medical provider expenses, medical insurance, or child-care coverage.

  • The current text cross-references section 81-6-101.
effective datestatute

Utah Code § 81-3-204(1)

Utah effect of marriage

A Utah premarital agreement becomes effective upon marriage.

  • Keep execution and marriage dates distinct.
amendment revocationstatute

Utah Code § 81-3-204(2)

Utah amendment and revocation formalities

After marriage, amendment or revocation requires a written agreement signed by both parties and is enforceable without consideration.

  • Match every change to the operative agreement.
voluntarinessstatute

Utah Code § 81-3-205(1)(a)

Utah voluntary-execution safeguard

The party resisting enforcement in Utah may prove that the agreement was not executed voluntarily.

  • Preserve drafts, timing, communications, counsel records, and signing circumstances.
financial disclosurestatute

Utah Code § 81-3-205(1)(b), (3)

Utah fraud and disclosure safeguard

Utah's second enforcement ground requires fraud at execution together with reasonable-disclosure, written-waiver, and adequate-knowledge conditions.

  • The court decides fraud as a matter of law; the text is not a generic unconscionability test.
public assistancestatute

Utah Code § 81-3-205(2)

Utah public-assistance support safeguard

A Utah court may require support to the extent necessary to avoid public-assistance eligibility caused by a premarital support modification or elimination.

  • The safeguard operates at separation or dissolution.
void marriagestatute

Utah Code § 81-3-206

Utah void-marriage rule

If a marriage is void, an otherwise premarital agreement is enforceable only as necessary to avoid an inequitable result.

  • The section does not itself determine relief.
limitationsstatute

Utah Code § 81-3-207

Utah limitation-of-actions rule

An applicable limitations period for relief under a Utah premarital agreement is tolled during marriage.

  • The current section has no express laches-or-estoppel sentence.
limitationsstatute

Utah Code § 81-3-208

Utah uniform construction and recodification history

Utah directs uniform construction among enacting states, subject to Utah's enacted text and authority.

  • Sections 81-3-201 through 208 were renumbered and amended by 2024 chapter 366, effective September 1, 2024.
financial disclosurecase reporter

Keyes v. Keyes, 2015 UT App 114

Utah Court of Appeals separate-fraud requirement

Keyes holds that fraud is separate from the three disclosure conditions and all four requirements must be satisfied under Utah's statutory fraud ground.

  • Nondisclosure, no written waiver, and inadequate knowledge did not alone supply fraud.
voluntarinesscase reporter

Reese v. Reese, 1999 UT 75, 984 P.2d 987

Utah Supreme Court good-faith negotiation framework

Reese recognizes binding agreements between spouses or prospective spouses when negotiations satisfy Utah's heightened expectations of good faith, honesty, and candor.

  • Fraud, coercion, and material nondisclosure remain central concerns, while child-related terms yield to the court's duties.

Known boundaries

Package limitations

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