A prenuptial agreement can be a practical tool for couples planning to marry. But what exactly is it, and how does it work in the state of Missouri? As an experienced Missouri family law attorney, I'll guide you through the ins and outs of prenuptial agreements in our state.

What is a Prenuptial Agreement?

A prenuptial agreement, also known as a premarital or "prenup" agreement, is a legally binding contract entered into by a couple before marriage. This document sets out how assets, debts, and other financial matters will be handled in the event of a divorce or death.

Purpose of a Prenuptial Agreement

Prenuptial agreements serve several purposes, including:

1. Protecting Separate Property: If you own significant assets before marriage, a prenup can help ensure these remain separate property in the event of divorce.

2. Clarifying Financial Rights: A prenup can detail each spouse's rights to property, pensions, and inheritance.

3. Avoiding Lengthy Litigation: By pre-determining the division of assets, a prenup can make a potential divorce process more straightforward and less contentious.

Missouri Laws on Prenuptial Agreements

Missouri law allows for the enforcement of prenuptial agreements under the Uniform Premarital Agreement Act (UPAA). However, to be valid, a prenuptial agreement in Missouri must meet several conditions:

1. Voluntariness: The agreement must be entered into voluntarily and not under duress, coercion, or fraud.

2. Full Disclosure: Both parties must fully disclose their financial situation to each other.

3. Fairness: The agreement must not be unconscionable, meaning it can't be excessively one-sided or unfair.

4. Legal Representation: Although not mandatory, it's highly recommended that both parties have independent legal counsel review the agreement.

Challenging a Prenuptial Agreement

If a prenuptial agreement is challenged in court during a divorce, the court will evaluate it based on the above criteria. If it's found to be lacking in any respect, the agreement may be invalidated.


A prenuptial agreement can be a valuable tool for protecting one's financial interests. However, the intricacies of the laws surrounding prenuptial agreements in Missouri underscore the importance of engaging a skilled Missouri family law attorney to guide you through the process.