McMullin v. McMullin

Missouri Court of Appeals struck down a prenup where the husband listed assets but assigned no values and gave little time to consult counsel — "full disclosure" requires values, not just descriptions.

Why this case matters

McMullin is the leading Missouri case on what disclosure actually requires. For drafters, the lesson is concrete: a list of asset categories ("various accounts," "real estate holdings") is not disclosure. Specific values are. The case is also why Missouri attorneys insist on multi-week timelines for prenup execution.

The facts

The husband presented his fiancée with a prenup that listed his assets but did not assign values to them. The wife had little time before the wedding to consult independent counsel.

The holding

The Missouri Court of Appeals held the agreement unconscionable. The court emphasized that "full disclosure" requires revealing the nature AND extent (values) of each party's property. Listing assets without values is inadequate. Lack of opportunity to consult counsel was a substantial additional factor.

What it means for you

• In Missouri, "full disclosure" requires specific values — not just lists of asset categories.
• Sworn financial schedules with dollar amounts are the safe approach.
• Short timelines compound disclosure problems.
• McMullin remains the controlling appellate authority on disclosure depth in Missouri.

Primary source

The full opinion is available at: https://www.leagle.com/decision/1996893926sw2d1081839

Missouri prenup law in context

Missouri prenups are governed by Mo. Rev. Stat. §451.220 — official statute text. For the full cost breakdown, attorney rate ranges, and procedural requirements, see the Missouri prenup cost guide.

To check whether your specific situation has the kind of risks McMullin v. McMullin identifies, take the 60-second prenup quiz — it applies Missouri-specific rules to your answers.

A note on legal citation

This page summarizes a published court opinion for educational purposes. We aim for accuracy but recommend reading the primary source linked above for the controlling text. Court opinions can be modified, distinguished, or overruled by later decisions; for current law, consult a family law attorney licensed in Missouri.