MISSOURI · 9-AXIS RULE ROLLUP

Missouri will-validity rules

Witness count, notarization, holographic acceptance, electronic-will status, self-proving affidavit, revocation rules, in-terrorem enforceability, and the cross-state portability rule — pinned to the Missouri probate code primary statutes.

9-axis rule rollup

Witness count2Verification pendingMo. Rev. Stat. §474.320
Notarization required for validityNoVerification pendingMo. Rev. Stat. §474.320
Holographic acceptednoVerification pendingMo. Rev. Stat. §474.320
E-will statusnot_adoptedVerification pending[PLACEHOLDER: no e-will statute identified 2026-05-11]
Self-proving affidavit formupc_2_504_model_or_state_variantVerification pendingMo. Rev. Stat. §474.320
In-terrorem enforceabilityenforceable_with_probable_cause_carve_outVerification pendingMo. Rev. Stat. §474.320
Cross-state portability ruleupc_2_506_conformity_adoptedVerification pendingMo. Rev. Stat. §474.337

Holographic acceptance in Missouri

Missouri requires two witnesses; holographic wills not recognized.

Verification pendingMo. Rev. Stat. §474.320

Electronic wills in Missouri

State has not adopted UEWA, an Electronic Wills Act, or permanent remote witnessing. COVID-era emergency orders have expired; physical-presence witness requirement applies.

Status: not_adopted

Revocation in Missouri

Revocation statutes vary state-by-state on the divorce-auto-revocation question. Verify the state's specific revocation-by-operation-of-law statute (often a separate chapter from the will-execution statute).

Verification pendingMo. Rev. Stat. §474.320

Run the decoder for Missouri

Pre-filled with Missouri as both execution and domicile state. Adjust to test cross-state scenarios.

Will validity decoder

Describe an executed will. The engine runs the cross-state portability conditional against the 50-state + DC matrix and returns a verdict with statute pins. All inputs stay in your browser.

Will format
Self-proving affidavit attached?
Notarization (on affidavit)?

Inputs are processed in your browser only. Nothing is POSTed to a server.

Verdict — VALID

VALID under MO probate. The will was executed and remains domiciled in MO, satisfying its will-execution statute with 2 witnesses.

Conformity rule. MO's will-execution statute (UPC §2-502 pattern) requires two competent witnesses; with two attested witnesses the will is valid.

Primary sourceMo. Rev. Stat. §474.320

Informational only — not legal advice. Consult an estate-planning attorney admitted in your state.

50-STATE WIDGET

Where Missouri sits on the holographic map

Holographic acceptance · 50 states + DC
AKAlaska — yes_unconditionalMEMaine — yes_unconditionalVTVermont — noNHNew Hampshire — noWAWashington — noIDIdaho — yes_unconditionalMTMontana — yes_unconditionalNDNorth Dakota — yes_unconditionalMNMinnesota — noWIWisconsin — noMIMichigan — yes_unconditionalNYNew York — no_with_narrow_exceptionMAMassachusetts — noCTConnecticut — noRIRhode Island — noOROregon — noWYWyoming — yes_unconditionalSDSouth Dakota — yes_unconditionalIAIowa — noILIllinois — noINIndiana — noOHOhio — noPAPennsylvania — yes_unconditionalNJNew Jersey — yes_unconditionalCACalifornia — yes_unconditionalNVNevada — yes_unconditionalUTUtah — yes_unconditionalCOColorado — yes_unconditionalNENebraska — noMOMissouri — noKYKentucky — yes_unconditionalWVWest Virginia — yes_unconditionalVAVirginia — yes_unconditionalMDMaryland — noDEDelaware — noAZArizona — yes_unconditionalNMNew Mexico — noKSKansas — noARArkansas — yes_unconditionalTNTennessee — yes_unconditionalNCNorth Carolina — yes_unconditionalSCSouth Carolina — noDCDistrict of Columbia — noHIHawaii — noTXTexas — yes_unconditionalOKOklahoma — yes_unconditionalLALouisiana — yes_olographicMSMississippi — yes_unconditionalALAlabama — noGAGeorgia — noFLFlorida — no_with_narrow_exception
  • Recognizes (25)
  • Narrow exception (2)
  • Does not recognize (24)

50-STATE WIDGET

Where Missouri sits on UEWA adoption

Electronic Wills Act adoption · 50 states + DC
AKAlaska — not_adoptedMEMaine — not_adoptedVTVermont — not_adoptedNHNew Hampshire — not_adoptedWAWashington — ewa_state_specific (effective 2022-01-01)IDIdaho — not_adoptedMTMontana — not_adoptedNDNorth Dakota — uewa_adopted (effective 2022-08-01)MNMinnesota — not_adoptedWIWisconsin — not_adoptedMIMichigan — not_adoptedNYNew York — not_adoptedMAMassachusetts — not_adoptedCTConnecticut — not_adoptedRIRhode Island — not_adoptedOROregon — not_adoptedWYWyoming — not_adoptedSDSouth Dakota — not_adoptedIAIowa — not_adoptedILIllinois — ewa_state_specific (effective 2022-07-26)INIndiana — ewa_state_specific (effective 2018-07-01)OHOhio — not_adoptedPAPennsylvania — not_adoptedNJNew Jersey — not_adoptedCACalifornia — not_adoptedNVNevada — ewa_state_specific (effective 2001-10-01)UTUtah — uewa_adopted (effective 2020-05-12)COColorado — ewa_state_specific (effective 2021-01-21)NENebraska — not_adoptedMOMissouri — not_adoptedKYKentucky — not_adoptedWVWest Virginia — not_adoptedVAVirginia — not_adoptedMDMaryland — ewa_state_specific (effective 2022-04-21)DEDelaware — not_adoptedAZArizona — ewa_state_specific (effective 2019-07-01)NMNew Mexico — not_adoptedKSKansas — not_adoptedARArkansas — not_adoptedTNTennessee — not_adoptedNCNorth Carolina — not_adoptedSCSouth Carolina — not_adoptedDCDistrict of Columbia — not_adoptedHIHawaii — not_adoptedTXTexas — not_adoptedOKOklahoma — not_adoptedLALouisiana — not_adoptedMSMississippi — not_adoptedALAlabama — not_adoptedGAGeorgia — not_adoptedFLFlorida — ewa_state_specific (effective 2020-07-01)
  • UEWA / Electronic Wills Act adopted (10)
  • Not adopted (41)

Related — Desymphony estate cluster

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