UPAA (Uniform Premarital Agreement Act)

Also known as: Uniform Premarital Agreement Act

A model law drafted in 1983 by the Uniform Law Commission and adopted by approximately 28 US states plus DC. Standardizes the requirements and defenses for premarital agreements.

The UPAA provides a uniform framework for the form, content, enforceability, and amendment of prenuptial agreements. Adopting states pass the UPAA into their own code (often with state-specific modifications).

Under the UPAA, a prenup is unenforceable only if the challenging spouse proves involuntary execution, OR unconscionability at signing combined with inadequate financial disclosure and no waiver and no adequate independent knowledge. The conjunctive standard makes UPAA prenups relatively easy to enforce compared to common-law jurisdictions.

The newer UPMAA (2012) updates the framework with stronger unconscionability protection and explicit independent-counsel language — but only three jurisdictions (Colorado, North Dakota, DC) have adopted it.

Related terms

UPMAA (Uniform Premarital and Marital Agreements Act) — A 2012 model law from the Uniform Law Commission updating the UPAA. Adopted by only three US jurisdictions: Colorado, North Dakota, and the District of Columbia.
Unconscionability — A judicial doctrine that allows courts to refuse to enforce contracts that are shockingly unfair. The second pillar (with voluntariness) of prenup invalidation.
Financial Disclosure — The requirement that each spouse provides a complete and specific accounting of their finances — assets, debts, and income — before signing a prenup.
Voluntariness — The requirement that both spouses signed the prenup of their own free will, without fraud, duress, coercion, or undue influence.

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