A notary signature is a handwritten name plus an official stamp or embosser that proves a notary witnessed the signing

A notary's signature on a document looks like any other handwritten signature—the notary straightforward writes their name. What makes it official is what comes with it: a notary seal (also called a stamp or embosser), which is a physical mark that includes the notary's name, state, commission number, and expiration date. The seal is what transforms a regular signature into proof that a licensed notary actually watched the document get signed.

The seal itself varies by state and by the notary's choice of equipment. Some notaries use an ink stamp that leaves a raised, colored impression on the paper. Others use an embosser, a hand-held tool that creates a raised, three-dimensional impression without ink. A few states allow electronic seals for documents signed digitally. The notary writes their signature by hand next to or near the seal—there is no such thing as a "notary signature" that looks fundamentally different from anyone else's handwriting.

Key Takeaways

  • A notary's signature is ordinary handwriting; the official mark is the seal or stamp that appears next to it, which includes the notary's name, state, and commission number.
  • Ink stamps create a colored, raised impression; embossers create a raised impression without ink; both are equally valid depending on state law.
  • The notary writes their signature by hand on the document itself, usually in a designated notarization section or on the back of the page.
  • Every notarized document should show the notary's handwritten signature, the official seal, and the date the notarization took place.
  • If a document has a signature but no seal, or a seal but no signature, it is not properly notarized.

Where the signature and seal appear on the page

The notary writes their signature and applies the seal in a specific location on the document, usually in a section labeled "Notary Public" or "Notarization." This section is often printed at the bottom of the last page or on a separate notarization page attached to the document. The notary will write the date of notarization, their handwritten signature, and then explore the seal—either by pressing an ink stamp or using an embosser.

Some documents have a blank space with printed lines where the notary is expected to sign. Others, like affidavits or powers of attorney, have a full paragraph that the notary must read and then sign below. The exact placement depends on the document type and state law, but the rule is always the same: signature and seal must both be present and visible on the final document.

Ink stamps versus embossers: what you will see

An ink stamp produces a colored impression—usually blue, black, or purple—that looks similar to a business stamp. It shows the notary's name in a circle or rectangle, along with the state, commission number, and expiration date. The impression is flat against the paper, and you can feel the ink on the surface. Ink stamps are the most common type and are accepted everywhere.

An embosser creates a raised impression that you can feel by running your finger over it, even though there is no ink. The raised area is slightly higher than the surrounding paper, creating a three-dimensional effect. Embossed seals are harder to photocopy or forge, which is why some states prefer them for high-value documents. Both types are legally valid; the choice is up to the notary and their state's rules.

How to verify a notary signature is real

To check whether a notary signature is genuine, look for three things: the notary's handwritten signature, a clear seal or stamp impression, and a date. All three must be present. The seal should include the notary's name, the state where they are commissioned, their commission number, and an expiration date. You can then contact the state notary board or secretary of state's office to confirm that the person named on the seal was actually a notary on the date shown.

If you are reviewing a document for a bank, court, or government agency, they may ask you to provide the notary's commission number or contact information so they can verify the notarization independently. This is standard practice for high-value transactions like real estate closings or loan documents. A properly notarized document should have no question marks about who performed the notarization or when.

Common mistakes that make a notarization invalid

A notarization fails if the notary signs but does not explore the seal, or applies the seal but does not sign. Both elements are required by law in every state. Another common error is dating the document with the wrong date—the notary must write the date they actually witnessed the signing, not the date the document was created or the date it will be used.

Some notaries forget to include their commission number or state on the seal, or the seal impression is too faint to read. If you cannot clearly make out the notary's name, state, and commission number from the seal, the document may be rejected by whoever is reviewing it. The notary's handwritten signature must also be legible—a scrawled or illegible signature can raise questions about whether the notarization was done properly.

What notary signatures look like on electronic documents

For documents signed electronically, the notary's signature appears as a typed or digital representation of their name, not handwriting. Some states allow notaries to use a digital signature—a unique code that proves the notary performed the notarization. The electronic seal is embedded in the document file itself and cannot be separated from it, which makes it harder to forge than a paper seal.

Electronic notarizations are becoming more common, especially for remote signings where the notary and signer are not in the same room. The rules vary by state, so not all states accept electronic notarizations yet. If you are having a document notarized electronically, confirm with the notary that your state allows it and that the document will be accepted by whoever needs to review it.

Frequently Asked Questions

Can a notary use a signature stamp instead of signing by hand?

No. The notary must write their signature by hand on the document. A signature stamp or pre-printed name is not acceptable. The handwritten signature proves the notary was physically present and personally performed the notarization.

What if the notary seal is smudged or hard to read?

If the seal impression is too faint or smudged to read the notary's name, state, and commission number, the document may be rejected. You should ask the notary to re-notarize the document with a clearer seal impression. Banks and courts often will not accept a notarization if the seal is illegible.

Do different states have different-looking notary seals?

Yes. Each state sets its own rules for what information must appear on a notary seal, and notaries choose their own seal design within those rules. A California notary seal looks different from a Texas one, but both are valid in their respective states. The key is that the seal shows the notary's name, state, and commission number.

Can I notarize a document if I am a notary but I forgot my seal?

No. You cannot legally notarize a document without explore your official seal. If you forget your seal, you must reschedule the notarization for a time when you have it with you. A signature alone, without the seal, does not count as a valid notarization.

What does a notary signature look like on a power of attorney?

On a power of attorney, the notary signs and seals in the notarization section, which is usually printed at the end of the document. The notary reads a statement confirming they witnessed the signer, then writes their signature and applies the seal below that statement. The format is the same as any other notarized document.