2.5 Notarial Certificate Requirements, Attachments & Corrections

Key Takeaways

  • A certificate must contain the official signature, a seal impression, the venue (state and county where the notary is located), the date, and the facts attested (Section 486.740.1 RSMo).

  • A loose certificate is attached by staple or another method that shows any later detachment, and only by the notary, at the time of notarization, in the principal's presence (Section 486.745.1).

  • An attached certificate goes immediately after the signature page if it is the same size, or on the front of the signature page if smaller, with every required element on one sheet.

  • A notary may correct a certificate only after the original is returned and the error is verified, by correcting and initialing and dating in ink or by replacing the certificate, and then noting the correction in the journal (Section 486.745.2).

  • A notary may not sign or seal an incomplete certificate or notarize a signature on a blank or incomplete document or one without certificate wording (Sections 486.660 and 486.665).

Last updated: October 2026

The notarial certificate is the notary's written statement of what happened. Section 486.600(11) defines it as the part of, or attachment to, a notarized document that the notary completes, that bears the official signature and seal, and that states the date, venue, and facts attested. The handbook summarizes the point: a proper notarization includes proper notary wording, the seal, and the official signature.

Required Elements (Section 486.740.1)

For every notarial act involving a document, the certificate must contain or state:

  1. the official signature of the notary;
  2. an impression of the official seal;
  3. the venue of the act, where the notary is located, including the name of the state and the county;
  4. the date of the notarial act; and
  5. the facts and particulars attested in that act.

The official signature is a handwritten signature using the exact name in the notary's commission, made with intent to perform a notarial act (Section 486.600(16)). The seal goes near the signature, and the seal may not be placed over printed or written matter (Section 486.730).

When the Wording Is Sufficient (Section 486.740.2)

A certificate is sufficient if it has the five elements and its form:

  • is set out in Chapter 486 (Sections 486.750-486.765);
  • is otherwise prescribed by Missouri law;
  • is prescribed by another jurisdiction's law, regulation, or custom, if it does not require the notary to do anything Missouri law does not authorize; or
  • describes the notary's actions well enough to meet the requirements of the act.

The certificate must be worded and completed only in letters, characters, and a language the notary reads, writes, and understands (Section 486.740.3).

Attaching a Loose Certificate (Section 486.745.1)

When the document lacks wording, or its wording cannot be used, the notary attaches a separate certificate. That certificate must:

RuleRequirement
MethodStaple or another method that leaves evidence of any later detachment
Who and whenAttached, signed, and sealed only by the notary, at the time of notarization, and in the principal's presence
PositionImmediately following the signature page if the same size as that page, or on the front of the signature page if smaller
CompletenessAll the Section 486.740 elements on the same sheet of paper

Many notaries also write a short description of the document (title, date, number of pages) on the attached certificate so it cannot be easily moved to a different document. The statute does not require this, but it is good practice.

Prohibited Certificate Practices

Sections 486.660 and 486.665.1 list the practices most likely to produce a fraudulent document. A notary shall not:

  • execute a certificate containing information known or believed to be false;
  • affix the official signature or seal to a certificate that is incomplete;
  • sign or seal a certificate other than at the time of notarization and in the principal's presence;
  • send a signed or sealed certificate to anyone with the understanding that it will be completed or attached outside the notary's presence;
  • notarize a signature on a blank or incomplete document; or
  • notarize a signature on a document without notarial certificate wording.

When a document has no certificate wording, the signer or the person who will receive the document decides which notarial act is needed. A nonattorney notary may describe the acts, but may not select the document or transaction for the signer (Section 486.675.1).

Correcting a Certificate Error (Section 486.745.2)

Mistakes happen, such as a wrong date or a missing county. A notary may correct an error or omission in a certificate that notary made only if:

  1. the original certificate and document are returned to the notary;
  2. the notary verifies the error by checking the journal entry, the document, or other determinative written evidence;
  3. the notary legibly corrects the certificate and initials and dates the correction in ink, or replaces the original certificate with a correct one; and
  4. the notary adds a notation to the journal entry stating the nature and date of the correction (also required by Section 486.705.4).

A notary may never "correct" someone else's certificate, and may not alter a certificate from memory without verifying the facts.

Common Defects Checklist

DefectRule violated
County left blank in the venue486.740.1(3)
Seal stamped over the signer's printed name486.730.4
Signature differs from commissioned name ("Jen Lopez" for "Jennifer A. Lopez")486.600(16)
Certificate stapled on later after the signer left486.745.1(2), 486.660(3)
Pre-signed certificates kept in a drawer "for convenience"486.660(2), (4)
Date corrected without journal notation486.745.2(4), 486.705.4

Exam Scenarios

  • Wrong date discovered later. A title company returns a deed whose certificate shows the wrong day. The notary checks the journal, crosses through and corrects the date, initials and dates the change in ink, and adds a notation to the journal entry.
  • Missing wording. A signer brings a letter with no certificate and asks the notary to "pick whatever works." The notary explains the available acts, but the signer or the receiving agency must decide. The notary then attaches the chosen certificate, completed in the signer's presence.
  • Mailed certificate. An out-of-town client asks the notary to mail a signed and sealed acknowledgment certificate so it can be attached later. Section 486.660(4) forbids it.
Test Your Knowledge

Under Section 486.740.1 RSMo, what venue must a notarial certificate state?

A

The county shown on the signer's driver's license

B

The county where the property in the document is located

C

The county where the notary's commission was issued and the notary's bond is on file

D

The state and county where the notary is located when performing the act

Test Your Knowledge

A deed comes back to a notary because the certificate shows the wrong date. Which correction method does Section 486.745.2 RSMo allow?

A

Use correction fluid, type in the new date, and return the deed to the title company without any record

B

Verify it against the journal, correct and initial and date it in ink, and note it in the journal

C

Ask the title company's closer to change the date and initial it

D

Prepare a replacement certificate from memory and mail it to the company so that its staff can attach it

Test Your Knowledge

Which statement about attaching a separate paper certificate reflects Section 486.745.1 RSMo?

A

Only the notary attaches it, at the time of notarization, in the principal's presence

B

It may be placed anywhere in the document as long as it is sealed

C

The signer may staple it on later if the notary signed it first

D

A paper clip is preferred so the certificate can be reused if needed

Sections you finish are checked off in the contents.