What’s the Difference Between a Signature Guarantee and a Notarized Signature?

This is a question many people ask themselves when seeking notarial services. If you have a document that requires one or more witnesses as well as notarization, it would only make sense to ask the notary public to sign as the witness. Doing so will allow you to knock out two birds with one stone so-to-speak, as the notary public will perform both the notarization and act as a witness.

What Is a Witness?

A witness is a neutral third-party who’s present during the signing of a document and does not have a monetary or otherwise beneficial stake in the document’s execution. He or she simply watches as the person or persons signs the document, at which point the witness will then sign the document. Witnesses to legally binding documents must be 18 years of age or older.

It’s important to note that a witness is not required to understand the contents of a the document. The sole purpose of a witness is to observe the person signing the document, which may or may not be done in the presence of the notary public, depending on the type of document.

Some of the different documents that often require one or more witnesses to be present during the signing include the following:

  • Deed of Trust
  • Mortgage
  • Quit Claim Deed
  • Grant Deed
  • Warranty Deed

A Notary Can Not Notarize His or Her Own Witness Signature

Most states allow notaries to act as witnesses to the execution of documents. In fact, it’s often a notary public’s duty to be a neutral witness to the signing of documents. With that said, there are a few things you should know about the notaries acting as witnesses to the signing of documents.


First and foremost, notary publics are prohibited from notarizing their own witness signatures. This is viewed as a conflict of interest and frowned upon by the courts. If a document requires both the signer and witness’s signature to be notarized, the notary can still act as the witness but he or she won’t be able to notarize their signature.

In the scenario mentioned above, the notary public may still notarize the original signer’s signature. If he or she acts as a witness, though, the notary cannot legally notarize their own signature. This is why it’s a good idea for clients to educate themselves on their respective state notarial laws, and if necessary, bring a friend, family, co-worker, or some other type of witness to the document’s signing.

Depending on the state, either one or two witnesses may be required at the document’s signing. If the signing is performed in a state which requires two witnesses, the notary public will only count as one – assuming the state allows notaries to act as witnesses. A second witness who doesn’t hold a stake in the document’s execution must be present.

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