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Home→Tools→Signing Requirements Checker→Missouri→Will

What Do I Need to Sign My Will in Missouri?

Witness, notary, and remote online notarization (RON) requirements for wills in Missouri.

Frequently Asked Questions

Missouri requires 2 witnesses for a will.RSMo § 474.320Verified May 14, 2026 Witnesses must be at least 18 years old.

Notarization is not required for a will to be valid in Missouri.RSMo § 474.320Verified May 14, 2026 However, notarization Makes the will self-proving, avoiding witness testimony at probate.

Missouri allows Remote Online Notarization (RON) for wills.RSMo § 474.320Verified May 14, 2026 The notarization can be completed via secure video call with an approved RON provider, without meeting in person. The state also accepts out-of-state RON.

To execute a will in Missouri: Find 2 adults to serve as witnesses. Review witness restrictions to ensure eligibility. Get the document notarized (standard practice, not required). Sign digitally from anywhere via video call

Yes. Missouri hasn't adopted the Uniform Probate Code, but it recognizes a will validly executed under another state's law as long as the will was valid where signed. The practical wrinkle is the self-proving affidavit — if the foreign will doesn't have one, witnesses may need to testify during probate. A Missouri-specific will sidesteps that. The document portability tool shows the recognition rule by document type.

Will Signing in Missouri

Missouri's execution rule for a will: 2RSMo § 474.320Verified May 14, 2026 witnesses, with notarization NoRSMo § 474.320Verified May 14, 2026. The rules apply by state statute, not by where you signed, so a document signed elsewhere still has to clear Missouri's requirements when it's used here.

Missouri allows Remote Online Notarization (RON) for wills and accepts notarizations performed under another state's RON authority. Practically, that means the notarization step can be completed over secure video without finding an in-person notary, and the resulting document is valid in Missouri even if the notary was elsewhere.

The signing rules above are what the Missouri will builder already bakes into the document — witness lines, notary block, and self-proving affidavit where Missouri permits it.

SimplyTrustSimplyTrust Editorial·Updated May 14, 2026

Legal Sources

  • RSMo § 474.320

Data sourced from Missouri statutes and official state code. How we research.

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