In the United States, there is no office called Commissioner for Oaths. The role of a Commissioner for Oaths in the U.S. is filled by the notary public, a state-commissioned officer who verifies your identity, administers oaths and affirmations, and witnesses signatures on legal documents. If a form or a person overseas tells you to find a Commissioner for Oaths while you are in America, a notary public is who you need.
Why the Title Doesn’t Exist Here
The Commissioner for Oaths title comes from Commonwealth jurisdictions. In the United Kingdom, the Commissioners for Oaths Act 1889 set up the framework for appointing solicitors, barristers, and certain court officials to administer oaths, affirmations, and declarations.1Legislation.gov.uk. Commissioners for Oaths Act 1889 Canada uses the title too, in a narrower form limited mostly to domestic affidavits and statutory declarations.
The United States took a different path. Federal regulations describe a notary public as a public officer qualified and bonded under the laws of a particular jurisdiction to perform notarial acts.2eCFR. Notarial and Related Services Commissioning is handled state by state, usually through the secretary of state’s office. Terms typically run four to ten years, and most states require the notary to post a surety bond before taking any official act, with required amounts ranging from $500 to $25,000 depending on the state.
The duties overlap almost entirely with a Commissioner for Oaths: identity verification, administration of oaths and affirmations, and certification that a signature was given voluntarily. So when a document uses the Commonwealth title, you are looking for a notary.
What a U.S. Notary Can and Cannot Do
A notary’s authority is strictly administrative. They confirm who you are, that you are signing willingly, and that any required oath was properly given. That is the whole job.
What a notary will not do is tell you what your document means, whether you should sign it, or how to fill it out. Offering that kind of guidance would push past their mandate and could taint the notarization itself. If you need the document explained, that is a question for a lawyer, not the notary. Their signature and seal certify the ceremony, not the contents.
The Notarial Acts You Are Likely to Encounter
Not every signature needs an oath. The act the notary performs depends on what the document is for, and the rules for signing differ.
Jurats (Sworn Statements)
A jurat is the act attached to an affidavit or any written statement sworn to be true. The certificate language reads “subscribed and sworn to before me.” It certifies three things: you appeared in person, you signed in the notary’s presence, and you took an oath or affirmation about the truth of the contents.
Because a jurat requires signing in front of the notary, do not sign the document ahead of time. If you do, the notary will have you sign a fresh copy or decline the act.
A sworn affidavit carries the same weight as live testimony. Lying in one is perjury, and under federal law perjury is punishable by up to five years in prison and a fine of up to $250,000.3Office of the Law Revision Counsel. 18 USC 1621 – Perjury Generally4Office of the Law Revision Counsel. 18 USC 3571 – Sentence of Fine State penalties vary but are similarly severe.
Acknowledgments
An acknowledgment is different. The notary confirms that you appeared, were identified, and declared the signature was yours and given voluntarily for its intended purpose. No oath about the content is required. You will see acknowledgment certificates on deeds, powers of attorney, and similar transactional documents, with language reading “acknowledged before me.”
With an acknowledgment, you may sign in advance and simply appear to confirm the signature. Even so, arriving with the document unsigned keeps things clean.
Oath Versus Affirmation
Where an oath is required, you have a choice. An oath invokes a higher power. An affirmation carries the identical legal force but uses no religious language, resting instead on your personal honor. The choice belongs to you, and a notary cannot refuse to offer an affirmation.
The Unsworn Declaration Alternative
For many federal matters, you do not need a notary at all. Federal law allows an unsworn declaration under penalty of perjury to substitute for a sworn statement.5Office of the Law Revision Counsel. 28 USC 1746 – Unsworn Declarations Under Penalty of Perjury The signer writes “I declare under penalty of perjury that the foregoing is true and correct,” then dates and signs. This does not work for every situation (deeds and many state filings still require notarization), but it is worth knowing when a notary is hard to reach.
What to Bring and How It Works
Most appointments go wrong for one of two reasons: the signer forgot proper ID, or the document was incomplete.
Bring a current government-issued photo ID. A state driver’s license, a U.S. passport, or a military ID generally works. The notary needs to compare the photo and signature to the person in front of them. Expired IDs and IDs without a photo are usually rejected.
Fill in every blank on the document before you arrive, including names, dates, addresses, and factual details. A notary cannot certify a document that could be altered after the fact. Do not sign it in advance. The notary will tell you when to sign.
The ceremony is short. The notary checks your ID. For a jurat, you sign in front of them and take the oath or affirmation. For an acknowledgment, you confirm the signature is yours and that you signed voluntarily. The notary then completes the certificate, signs it, applies a stamp or seal, and dates it. The document is handed back to you.
Fees and Recognition Across States
Most states cap what a notary may charge for each act. Statutory maximums for administering an oath or witnessing a signature generally run from $2 to $25 per signature, with $5 the most common cap. Roughly a dozen states set no maximum. Travel and technology charges may be allowed on top in some states, particularly for remote notarization. The secretary of state’s website for your state publishes the current schedule.
A document notarized in one state is generally valid in another. The Revised Uniform Law on Notarial Acts, adopted in a growing majority of states, provides that an act performed in one state is presumed valid in another as long as it complied with the originating state’s rules.
Remote Online Notarization
As of 2026, 47 states and the District of Columbia authorize remote online notarization, which lets the entire process happen over a live audio-video connection. You appear on camera, present your ID, and take the oath while the notary observes.
Remote notarization layers in extra identity checks. You typically upload photos of your ID for automated credential analysis, then answer knowledge-based authentication questions drawn from your personal financial history. Most states require you to answer at least four out of five correctly within a strict time limit.
When a Notary Must Refuse
A notary is not a rubber stamp, and some refusals protect you as much as the system.
A notary should decline if you appear unable to understand what you are signing, whether from confusion, impairment, or pressure from someone else in the room. Good practice is a brief private conversation in which you explain the document in your own words and confirm you want to proceed.
A notary cannot act when they have a personal or financial stake in the document. Notarizing their own signature is categorically prohibited, and notarizing for a transaction where they are a named party or beneficiary is off-limits. Rules on notarizing for close family members vary by state.
A notary must also refuse if the document has blank spaces or signs of alteration, if your ID does not match the name on the document, or if the ID appears forged or expired.
If Something Goes Wrong
The consequences run both ways.
For a signer, a false statement under oath is perjury, a federal felony carrying up to five years and fines up to $250,000, with state penalties on top.3Office of the Law Revision Counsel. 18 USC 1621 – Perjury Generally4Office of the Law Revision Counsel. 18 USC 3571 – Sentence of Fine A document containing a false sworn statement can also be voided, unwinding the transaction and opening the signer to civil liability.
For a notary, skipping identity verification, letting someone sign outside their presence when a jurat requires appearance, or certifying an oath that was never administered can mean commission revocation, civil penalties, and in willful cases criminal charges. The surety bond the notary posted at commissioning exists for this purpose: someone harmed by a negligent or dishonest notarization can file a claim against it to recover losses.