Prenup Missouri 2026

Prenup Cost in Missouri (2026)

Attorney-drafted prenups in Missouri cost $1,000–$5,500. Online platforms run $599/couple. Here's what the state requires, what affects cost, and when each option makes sense.

LegalCostCalculator Editorial Team Data sourced from official government websites · Last reviewed: May 2026

Not legal advice. Prenuptial agreement law varies by state and by circumstance. Cost estimates are based on prevailing attorney rates in Missouri. Consult a licensed family law attorney for advice on your specific situation.

$1,000–$5,500

Attorney (both sides)

Avg. 150-325/hr × 7–18 hrs

$599

Online (HelloPrenup)

Per couple, attorney-reviewed

Notarization required

Witnesses may be needed

Prenup Cost in Missouri — Full Breakdown

Option	Cost in Missouri	Best for
Two separate attorneys (one per spouse)	$1,000–$5,500	Complex assets, business ownership, high net worth, or prior marriages
One attorney drafts; second reviews	$550–$3,025	Moderate assets; one party takes the lead on drafting
Online platform (HelloPrenup)	$599/couple	Straightforward finances, combined assets under $500K, no children from prior relationships
DIY template (not recommended)	$0–$99	Not recommended — enforceability risk without attorney review

Missouri attorneys typically bill $150–$325/hour for family law matters. A standard prenup requires 7–18 hours of attorney time per side — covering the initial consultation, drafting, negotiation, revisions, and signing.

Missouri Prenup Requirements

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Governing law

Missouri Rev. Stat. §§ 451.220; enforced under common law (UPAA NOT adopted)

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Written requirement

Yes — all prenuptial agreements must be in writing. Verbal prenups are not enforceable.

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Notarization

Missouri does not require notarization. The state enforces prenups under common law (UPAA NOT adopted).

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Waiting period / timing

No statutory requirement

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Key enforcement note

Missouri has NOT adopted the UPAA and relies on common law. Courts require full financial disclosure and voluntary execution. St. Louis and Kansas City attorneys cost significantly more than rural Missouri markets.

What Makes a Missouri Prenup More Expensive

Attorney cost varies within the $1,000–$5,500 range based on complexity:

Business ownership

Valuing and protecting a business interest in a Missouri prenup adds significant complexity — potentially requiring a business valuation expert and more detailed drafting provisions.

Adds $1,000–$3,000+

Real estate

If either party owns real estate in multiple states, each property's treatment must be addressed under the relevant state's laws.

Adds $500–$2,000

Prior marriage or children

Protecting children from a prior relationship requires careful estate planning integration — often a separate process running alongside the prenup.

Adds $500–$2,000

Negotiation and revisions

If the parties disagree on terms and require multiple rounds of revision, attorney fees increase proportionally. The simple estimates assume 2–3 drafts.

Variable — $300–$500/round

Attorney location

Attorneys in Missouri's major metros (especially the state's largest cities) typically bill 65–163 more per hour than suburban or rural attorneys.

Rate differential

HelloPrenup vs. Missouri Attorney — Which to Choose?

Use HelloPrenup ($599) if:

✓ Combined assets under $500K
✓ No children from prior relationships
✓ No business ownership to protect
✓ No real estate in multiple states
✓ Both parties comfortable with the online process
✓ Budget is a primary concern

Use Missouri attorneys if:

→ Business ownership is involved
→ Prior marriage or children to protect
→ Significant real estate portfolio
→ Retirement accounts or pension plans
→ High net worth (over $1M combined)
→ Complex negotiation is expected

Online Prenup

Get a Legally Valid Prenup in Missouri — Starting at $599

HelloPrenup guides both partners through a collaborative process. Attorney-reviewed and enforceable in Missouri and all 50 states. Starting at $599/couple — a fraction of attorney fees.

4.810,000+ couples

Get Started with HelloPrenup → from $599/couple

Frequently Asked Questions

How much does a prenuptial agreement cost in Missouri?

In Missouri, prenuptial agreements typically cost $1,000–$5,500 when drafted by two separate attorneys (one for each spouse). If one attorney drafts and the other reviews, expect $600–$3,300. Online services like HelloPrenup charge $599 per couple — significantly cheaper for straightforward financial situations.

Is notarization required for a prenup in Missouri?

No — Missouri does not require notarization. The state enforces prenups under common law (UPAA NOT adopted).

Is Missouri a community property state?

No — Missouri is an equitable distribution state — courts divide only marital property, not separate property brought into the marriage. A prenup still matters in equitable distribution states because it gives you control over how courts divide assets instead of leaving it to judicial discretion.

How far in advance should I sign a prenup in Missouri?

Family law attorneys recommend finalizing your Missouri prenup at least 30–60 days before the wedding, and ideally 3–6 months in advance. Courts look unfavorably on prenups signed within days of the wedding, viewing them as potentially coercive.

Can I do a prenup without a lawyer in Missouri?

Yes — online platforms like HelloPrenup ($599/couple) are legally valid in Missouri for straightforward financial situations. Both partners are guided through a collaborative process, and the resulting agreement is reviewed by licensed attorneys. This is not the same as a DIY template. For complex situations involving business ownership, significant assets over $500K, or prior marriages, two separate attorneys is strongly recommended.