As artificial intelligence becomes more accessible, many people are turning to online tools and AI-generated templates to create important legal documents—including wills. But while these tools may seem convenient, a critical question remains: Can an AI-generated will hold up in court in Missouri, and specifically in St. Louis County?
The short answer: It depends—but there are significant risks.
Missouri law has clear requirements for what makes a will valid. While AI can help draft language, it cannot ensure those legal requirements are met. Before relying on an AI-produced will, it’s important to understand the potential consequences.
What Missouri Law Requires for a Valid Will
To be legally enforceable in Missouri, a will must meet specific statutory criteria, including:
- It must be in writing.
AI-generated wills are typically typed, so this requirement is usually satisfied. - It must be signed by the testator.
Failure to sign properly or in the right place can invalidate the entire will. - It must be witnessed by two competent individuals.
Missouri does not recognize “digital-only wills,” and electronic signatures or online notarization alone are not enough for a traditional will. - The testator must have legal capacity and intent.
AI cannot verify this or document it properly.
If an AI-generated will is missing any of these elements—or contains errors that create ambiguity—the document may be partially or fully unenforceable during probate in St. Louis County.
The Risks of Using AI to Create a Will
While AI can produce seemingly sophisticated content, it has limitations that matter in estate planning:
1. AI Doesn’t Know Missouri-Specific Legal Requirements
Many AI tools rely on general legal knowledge rather than state-specific standards. Missouri’s probate laws, witness rules, property transfer rules, and trust alternatives are all unique. Missing a small detail could jeopardize your estate plan.
2. AI Can Introduce Ambiguities
If AI uses unclear or conflicting language, beneficiaries may disagree on your intentions. This can lead to probate challenges, delays, or litigation—especially in St. Louis County’s busy probate courts.
3. AI Cannot Verify Execution Formalities
A will is only as strong as the circumstances under which it was signed. Missouri requires proper signing and witnessing, neither of which AI can supervise, document, or validate.
4. AI Tools Cannot Personalize Complex Situations
Blended families, second marriages, family-owned businesses, real estate in multiple states, and special needs planning all require tailored solutions. These situations are common in the St. Louis region and often require trusts or additional documents.
Why AI Wills Often Fail in Probate
Probate judges review wills for clarity, compliance with Missouri law, and signs of improper influence. AI-generated wills commonly fail because:
- Required clauses are missing
- Beneficiary designations conflict with account ownership
- Real estate is addressed incorrectly
- The document lacks a self-proving affidavit
- The will does not properly address minor children
- Ambiguous phrasing creates room for dispute
If the document raises questions, the court may treat it as invalid or require lengthy hearings to determine what the testator intended. In some cases, the estate may proceed as if no will existed at all.
Are AI Wills Ever Safe to Use?
AI-generated wills may be reasonable for:
- Simple estates
- Individuals with no real property
- People seeking a temporary solution before meeting with an attorney
But even in these cases, the risk of unintended consequences remains high. Most families in the St. Louis area benefit from a more comprehensive approach that accounts for property, children, assets, and long-term planning needs.
The Importance of a Properly Drafted Estate Plan in St. Louis
A legally sound estate plan provides clarity, prevents disputes, and ensures your wishes are honored. An experienced St. Louis estate planning attorney can:
- Ensure the will complies with all Missouri requirements
- Recommend when a trust may be a better option
- Coordinate beneficiary designations with your overall estate plan
- Reduce the chances of probate delays or challenges
- Help avoid unnecessary taxes, fees, and conflict
- Prepare a full suite of documents, including powers of attorney and healthcare directives
This level of personalized strategy cannot be replicated by AI.
Considering an AI-Generated Will? Talk to an Attorney First.
If you’ve created an AI-generated will—or are considering doing so—it’s wise to have the document reviewed before signing. A small oversight today can become a big problem for your loved ones later.
The estate planning attorneys at Rogers Sevastianos & Bante LLP assist clients throughout St. Louis County and the surrounding Missouri region. We can help you determine whether your AI-generated will is legally sufficient and recommend any changes necessary to protect your wishes and assets.
Contact us today to schedule a consultation and make sure your estate plan is built to last.
Disclaimer: The information in this blog is for general informational purposes only and does not constitute legal advice. Every legal situation is unique, and you should consult an attorney for personalized guidance on your specific circumstances.