Everything engaged couples need to know about making a prenuptial agreement valid and enforceable in Wyoming — in plain English, reviewed by attorney James Sexton, Esq.
Yes — prenuptial agreements are legal and enforceable in Wyoming, governed by Wyoming Supreme Court case law rather than a statute.
Wyoming has no premarital-agreement statute and never adopted the Uniform Premarital Agreement Act, so the rules come from the Wyoming Supreme Court. Lund v. Lund, 849 P.2d 731 (Wyo. 1993) confirmed that a prenup is simply a contract entered into in contemplation and consideration of marriage, and Seherr-Thoss v. Seherr-Thoss, 141 P.3d 705 (Wyo. 2006) held that prenups are construed under the same rules as any other contract. That contract-law footing makes Wyoming a straightforward, enforcement-friendly state: a written agreement signed voluntarily, after honest disclosure, with terms that aren't unconscionable, will be honored.
A Wyoming prenup is enforceable when it is a written contract signed voluntarily by both parties after honest financial disclosure, with terms a court would not call unconscionable.
Because an agreement made in consideration of marriage falls within the statute of frauds, a Wyoming prenup must be in writing and signed. The marriage itself supplies the consideration — no exchange of money or promises is needed.
Both parties must sign free of fraud, duress, or overreaching. Presenting the agreement weeks before the wedding, rather than at the rehearsal dinner, is the practical protection.
Each party should fully disclose assets, debts, and income before signing. Concealed finances are the most common way a Wyoming prenup gets unwound.
Wyoming courts enforce prenups as contracts, but under Seherr-Thoss they will not bless an agreement so one-sided it shocks the conscience — particularly a support waiver that leaves a spouse destitute.
| Governing statute | No statute — Wyoming case law (Lund v. Lund, 849 P.2d 731 (Wyo. 1993); Seherr-Thoss v. Seherr-Thoss, 141 P.3d 705 (Wyo. 2006)) |
|---|---|
| Property division | Equitable distribution |
| Notarization | Recommended (not required by statute) |
| Waiting period | None required — but sign well before the wedding |
| Spousal support | Alimony can be waived, unless enforcement would leave a spouse destitute |
See how Wyoming's signing formalities compare in our prenup notarization requirements by state guide.
Wyoming courts set prenups aside for fraud, duress, hidden assets, or unconscionable terms — otherwise they enforce them like any other contract under Lund and Seherr-Thoss.
Because Wyoming analyzes prenups under ordinary contract principles, the challenges that succeed are contract challenges: a signature procured by fraud or pressure, finances that were concealed, or terms so lopsided a court finds them unconscionable. Wyoming's divorce statute (Wyo. Stat. § 20-2-114) otherwise gives judges sweeping discretion to divide property as appears just and equitable — which is precisely the uncertainty a well-drafted prenup removes.
Trusted Prenup creates a state-specific Wyoming prenuptial agreement online — built to meet the requirements above and designed by James Sexton, Esq. A traditional attorney typically costs $2,500–$10,000; this is a flat $599.
A guided questionnaire captures your assets, debts, and wishes — most couples finish in under 90 minutes.
We assemble a complete prenup built to meet your state's exact legal requirements.
Review with your partner, then sign online with notarization handled for you.
A Wyoming attorney-drafted prenup typically costs $1,500–$5,000. Trusted Prenup creates a state-specific Wyoming prenup online for a flat $599, with optional notarization and attorney-review add-ons.
No — Wyoming law does not require notarization for a premarital agreement to be valid. It is still recommended, because notarized signatures are simple, cheap proof against a later forgery or duress claim.
Yes, on standard contract grounds: fraud, duress, concealment of assets, or unconscionability. A prenup signed early, with full disclosure and reasonable terms, is very difficult to defeat in Wyoming.
Court decisions, not a statute. Lund v. Lund, 849 P.2d 731 (Wyo. 1993) established that prenups are enforceable contracts made in consideration of marriage, and Seherr-Thoss v. Seherr-Thoss (2006) confirmed they are interpreted under ordinary contract rules.
Yes — Seherr-Thoss confirmed that alimony can be waived. The limit is conscionability: a court may refuse to enforce a waiver that would leave one spouse destitute or dependent on public assistance, especially after a long marriage.
Because Wyo. Stat. § 20-2-114 gives Wyoming judges broad discretion to divide property however appears just and equitable — including property you brought into the marriage. A prenup replaces that judicial guesswork with rules you both chose.
Yes — Wyoming enforces properly executed prenuptial agreements regardless of how they were drafted. What matters is execution: a written agreement, voluntary signatures, full financial disclosure, and Wyoming's signing formalities. The full picture is in are online prenups legally binding.
Trusted Prenup is not a law firm and does not provide legal advice. This guide is general information about Wyoming law and not a substitute for advice from a licensed attorney about your situation.