Notary seal requirements are set by each state, but three elements are universal: the notary’s full name exactly as it appears on the commission, the words “Notary Public,” and the state that granted the commission. Most states add a commission expiration date, and roughly 20 states also require a commission number on the seal face. From there, rules branch into county of commission, state emblems, shape, size, and ink color, so the specifics depend on where you are commissioned.
What Every Seal Must Show
Three pieces of information appear on every notary seal in the United States:
- Your full legal name as printed on your commission certificate
- The words “Notary Public”
- The state where you hold your commission
Beyond those three, the most common additional requirement is your commission expiration date. The vast majority of states mandate it; a handful make it optional. Nearly as common is a commission number, sometimes called a commission identification number. Around 20 states explicitly require it, including several of the most populous. If your state issues you a commission number, check the statute before ordering, because leaving it off when required is one of the most frequent mistakes new notaries make.
A smaller group of states requires the county where you maintain your principal office or where you filed your commission. A few go further and require the state’s official seal, coat of arms, or emblem on the stamp. A few others explicitly prohibit the state seal, so this is not something to guess at. Some states also set rules about the order of the information on the seal face or require a manufacturer identification number.
The Name on the Seal Must Match Your Commission
One rule cuts across every jurisdiction: the name on your seal must match the name on your commission exactly. If your legal name changes after you are commissioned, you generally have to notify the commissioning authority and order a new seal before you perform any further notarizations. A seal that does not match the current commission creates the kind of discrepancy that causes recording offices to reject documents.
Shape, Size, and Border
Approved shapes are usually circular or rectangular, with dimensions set by statute. Circular seals typically max out at about two inches in diameter. Rectangular seals generally cannot exceed roughly one inch by two and a half inches. Your state may dictate one shape or let you choose. Some states also require a serrated or milled border around the impression, which makes the seal harder to forge and easier to recognize at a glance.
Ink Color
Ink color rules vary more than people expect. Some states mandate black only. Others allow dark blue, dark purple, or dark brown. At least one state requires purple. Some states set no color restriction at all but require the impression to be photographically reproducible, which effectively rules out light or unusual colors. When in doubt, black is the safest default: it meets the reproducibility requirement everywhere and is universally accepted by recording offices, courts, and title companies.
Stamp or Embosser
The two physical formats are the ink rubber stamp and the metal embosser that creates a raised impression on paper. Most states allow either. The ink stamp is far more common today because it produces a dark impression that photocopies and scans cleanly. A few states still require or strongly prefer embossed seals for certain documents, particularly court filings and real property recordings.
If you use an embosser, many states require the raised impression to be photographically reproducible. That typically means darkening the embossed area with ink or using a companion ink stamp alongside the embosser. A raised-only impression that disappears in a photocopy will get your document rejected at recording.
Legibility Matters as Much as Content
A seal that contains all the right information but produces an unreadable impression is functionally useless. Recording offices, title companies, courts, and lenders routinely reject documents where the seal is smudged, faint, or partially missing. The costs are real: delayed closings, re-executed documents, and sometimes chasing down signers who have already left town.
The usual culprits are worn-out stamp pads, stamps pressed at an angle that cuts off part of the text, and embossers used without inking on paper that will not hold a clean raised impression. If your seal produces a bad impression, apply a second clear impression nearby rather than stamping over the first. Stamping over a blurred impression just creates a worse mess.
Some states specify that an illegible seal does not automatically invalidate the underlying transaction. That is a long way from “accepted without hassle.” Any question about legibility triggers extra scrutiny, delays, and sometimes outright rejection at recording. Replacing a stamp before it degrades is cheap insurance.
Electronic and Remote Online Notary Seals
As of mid-2025, 44 states and the District of Columbia have enacted laws permitting remote online notarization, and electronic notarizations require a digital equivalent of the physical seal. The core identifying data is the same: your name, commissioning jurisdiction, commission number, and commission expiration date. The National Association of Secretaries of State has published standards requiring an electronic notarial certificate to bear the notary’s electronic signature or official electronic seal, official title, and the required information about the date, place, and method of the notarial act.
The difference lies in the security layer. A physical seal deters tampering through its visual impression. An electronic seal relies on tamper-evident technology, typically public key infrastructure and digital certificates. You use a private cryptographic key to create a unique digital signature, and any unauthorized change to the document after signing becomes detectable. National electronic notary standards require the seal to be unique to the notary, independently verifiable, retained under the notary’s sole control, and attached to the document in a tamper-evident manner.
Several states with remote online notarization laws require a digital certificate meeting the X.509 standard, which serves as both an identity credential and a document-sealing tool. Some states also require a visible electronic seal image on top of the underlying cryptographic seal.
Keeping and Destroying Your Seal
Your seal is a controlled instrument. While your commission is active, you are responsible for keeping it secure and preventing unauthorized use. Lending your seal, or leaving it where someone else can reach it, exposes you to liability for any notarizations performed with it, including fraudulent ones.
When your commission expires, you resign, or your commission is revoked, most states require you to destroy or deface the seal so it cannot be used again. Some states set specific timelines for destruction or require you to surrender the seal to a state office. If you renew, you will typically need a new seal reflecting the updated expiration date, and the old one should be destroyed once the prior term ends.
Performing notarizations with an expired seal, or with a seal that does not match your current commission, can count as unauthorized practice. Consequences range from administrative sanctions and commission revocation to misdemeanor criminal charges, depending on the state. Order the new seal as soon as the renewed commission arrives and retire the old one immediately.
Where to Confirm Your State’s Rules
Notary law is entirely state-based, with no federal statute governing seal requirements for traditional notarizations. The Revised Uniform Law on Notarial Acts offers a model framework, but only about a dozen states have adopted it. There is no single national standard for what appears on a seal, what shape it takes, or what color ink you use.
Before ordering, check your secretary of state’s website or whichever office oversees notary commissions in your jurisdiction. Many publish notary handbooks or seal specification sheets that spell out exact element order, abbreviation rules, and prohibited design features. Seal manufacturers will often ask for your state and commission details and produce a compliant seal automatically, but legal responsibility for accuracy falls on you. If the vendor gets something wrong and you use the seal without catching it, you bear the consequences.