Postnuptial Agreement in St. Louis

Marital Agreement Drafting Rooted in 60+ Years of Missouri Family Law

A postnuptial agreement is a written legal contract signed by two spouses after they’re already married. It addresses property rights, financial responsibilities, debt allocation, and related matters in the event of divorce, separation, or death. Unlike a prenuptial agreement, which is signed before the wedding, a postnuptial agreement is created during the marriage, making it available to couples who didn’t formalize these arrangements beforehand or whose circumstances have shifted significantly since they married.

At Cavanagh & Associates, we handle postnuptial agreement drafting, review, and litigation for clients in St. Louis and surrounding areas. Clients work directly with Attorney Jack Cavanagh. Cases aren’t handed off to a paralegal or associate.

If you’re considering a postnuptial agreement in St. Louis, contact us to schedule a consultation with Attorney Cavanagh. Call (314) 309-2799 to get started.

When St. Louis Couples Consider a Postnuptial Agreement

A postnuptial agreement isn’t limited to any one situation. Several common circumstances lead couples to explore this option:

• No prenuptial agreement was signed and both spouses now want to formalize their financial arrangements
• A business was started or acquired during the marriage and one spouse wants to protect that interest
• One spouse received a significant inheritance, changed careers, or took on substantial debt, and the couple wants to update their financial arrangement accordingly
• Children from a prior relationship are involved, and a spouse wants to protect specific assets or inheritance rights on their behalf
• The marriage went through a difficult period and both spouses want to reset financial expectations as part of rebuilding
• Significant premarital assets were never clearly documented as separate property

What a Missouri Postnuptial Agreement Can & Cannot Address

A postnuptial agreement can cover a wide range of financial and property matters. Common subjects include the division of marital and separate property, spousal support provisions or waivers, debt allocation, business interests, and inheritance rights. When drafted thoughtfully, these agreements can also serve an estate planning function by specifying what happens to property upon a spouse’s death.

Missouri law sets one clear limit: a postnuptial agreement cannot govern child custody, visitation, or child support. Courts determine those matters based on the best interests of the child at the time of any dissolution proceeding, and no agreement between spouses can override that standard.

Missouri Enforceability Standards for Postnuptial Agreements

For a postnuptial agreement to hold up in a Missouri court, it must be entered into freely, fairly, knowingly, and in good faith, with full disclosure of each spouse’s assets and liabilities. If those requirements are met, the agreement is binding unless a court finds it unconscionable, meaning so one-sided that it creates strongly unequal conditions between the parties.

Missouri hasn’t adopted the Uniform Premarital Agreement Act. Enforceability is governed by Missouri statutes including RSMo 451.220 and applicable case law. Both spouses having independent legal counsel at the time of signing can strengthen an agreement’s enforceability. An agreement that wasn’t signed voluntarily, rested on incomplete financial disclosure, or contains unconscionable terms can be challenged and set aside.

Postnuptial Representation Grounded in 60+ Years of Missouri Family Law

Cavanagh & Associates has been serving clients in St. Louis since 1962. Attorney Jack Cavanagh brings that depth of Missouri family law practice to every marital agreement matter, along with his background as a former Assistant Prosecuting Attorney for St. Louis County. That prosecutorial experience shapes how he approaches legal documents: he drafts and reviews them with an eye toward how they’re evaluated if they’re ever contested. Attorney Cavanagh has been recognized as Distinguished by Martindale-Hubbell in 2018, 2019, and 2022.

Our approach combines compassionate guidance with a genuine readiness to advocate when it matters. If a postnuptial agreement is ever challenged in a dissolution proceeding, clients working with us can have representation already familiar with their case. Because clients work directly with Attorney Cavanagh from start to finish, nothing gets lost in delegation.

Schedule a Postnuptial Agreement Consultation in St. Louis

A consultation is the right place to start. We can discuss your situation, what you’re hoping the agreement will accomplish, and whether a postnuptial agreement fits your needs. Attorney Cavanagh works directly with clients through the process, from initial discussion through drafting and execution.

Cavanagh & Associates serves clients throughout St. Louis and the surrounding region. Call (314) 309-2799 to schedule your consultation.