Missouri e-signature and notarization law

Missouri's electronic signature law: the Uniform Electronic Transactions Act (RSMo §§ 432.200 to 432.295). Electronic signatures are also valid under the federal ESIGN Act for most transactions. Some documents are excluded, such as wills, divorce and adoption documents, court orders and certain official notices.

The fuller federal list is in our guide to e-signing in the United States.

What Missouri's e-signature law does not cover

RSMo § 432.210 says the Act does not apply to transactions governed by:

• The rules for creating and executing a will, a codicil or a testamentary trust.
• The Uniform Commercial Code, other than sections 400.1-107, 400.1-206, 400.2-101 to 400.2-725 and 400.2A-101 to 400.2A-532.

How Missouri's law treats electronic records

In Missouri, RSMo § 432.230 says that if a law requires a record to be in writing, an electronic record satisfies the law.

Remote online notarization in Missouri

Remote online notarization: allowed in Missouri since August 28, 2020, only for acknowledgments and jurats.

Missouri's remote online notarization law is at RSMo §§ 486.1100 to 486.1205, enacted by L. 2020 H.B. 1655. It defines communication technology as a device or process that lets a notary physically located in Missouri and a remotely located individual communicate with each other simultaneously by sight and sound.

Section 486.1140 limits the acts: an acknowledgment and a jurat may be performed using communication technology under those sections, and by no other method. The Revisor of Statutes shows it effective August 28, 2020.

A remote online notary must register the capability to perform remote online notarial acts with the Secretary of State before performing them.

Missouri's Secretary of State approves the software before remote online notaries use it, and a notary must complete a separate approved course on remote online notarization and pass an examination before first registering.

The statute also sets conditions on the principal. Among them, the principal must appear to understand the nature of the transaction and must communicate directly with the notary in a language both understand.

The notary works only while physically located within Missouri. A principal outside the United States can be served if the notarization is not prohibited where that principal is physically located.

The electronic journal can be opened only through two factors of authentication, and the audio and video recording is maintained for at least ten years. A remote online notary transaction fee is allowed only if the notary and the principal agree on it in advance.

SignAndGo doesn't notarize documents. A commissioned notary does that, using a remote notarization platform where the state allows it.

Where to read Missouri's law

• Electronic signatures: RSMo §§ 432.200 to 432.295, exclusions at § 432.210.
• Remote notarization: RSMo §§ 486.1100 to 486.1205, acts at § 486.1140, registration at § 486.1120.

Checked against Missouri's published law on November 2, 2026. This is general information, not legal advice.