Witness vs Notary: What's the Difference?
If you’ve ever been confused about why a document form asks for both a notary’s seal and two witness signatures, you’re not alone — these are two different roles doing two different jobs, and conflating them is an easy mistake to make.
The Core Difference
A witness is someone who observes a document being signed and confirms, through their own signature, that they watched it happen. Witnesses generally don’t verify identity in any formal way — they’re simply present and attesting to what they saw.
A notary is a state-commissioned official whose role is more specific: verifying the signer’s identity through acceptable ID, confirming the signer understands the document and is signing willingly, witnessing the signature, and completing an official notarial certificate under their seal.
A witness is an informal observer. A notary is a formal, legally accountable verifier.
Why Some Documents Require Both
Documents that carry significant legal weight often stack both protections together. A Florida power of attorney is the clearest example: it requires two witnesses plus a notary, all present for the same signing. This layering exists because a POA grants meaningful authority over someone’s affairs — the extra verification reduces the chance of fraud or undue influence.
Can a Notary Also Be a Witness?
No — a notary cannot double as one of the required witnesses on the same document. These need to be separate people. The notary’s role as an impartial verifier is distinct from a witness’s role as an observer, and combining them would undermine the entire point of requiring both.
Who Can Serve as a Witness
Generally, any adult — 18 or older — who doesn’t have a direct interest in the document can witness a signing. This often includes:
- Friends
- Coworkers
- Family members, in most situations (though some documents restrict a named beneficiary or agent from also serving as a witness)
Unlike the signer, witnesses typically aren’t required to present ID to the notary, though a careful notary may still confirm who they are as part of accurately completing the certificate.
A Side-by-Side Comparison
| Witness | Notary | |
|---|---|---|
| Role | Observes the signing | Verifies identity, witnesses, and certifies |
| ID required | Usually not | Yes, from the signer |
| State commission | No | Yes |
| Can serve as the other role | No | No |
| Common documents | Wills, powers of attorney | Wide range, including witnessed documents |
Documents That Typically Need Both
- Powers of attorney — two witnesses plus a notary
- Wills (for the self-proving affidavit) — two witnesses plus a notary
- Some trust documents — depending on how they’re structured
Our guide on notarizing a power of attorney in Florida covers exactly how the witness-plus-notary combination works for that specific document.
Coordinating Witnesses for Your Appointment
If your document needs both witnesses and a notary, it’s worth confirming your witnesses’ availability before booking — everyone typically needs to be present in the same session, whether in person or, for Remote Online Notary, on the same video call. Easy Day Notary can accommodate multi-person signings either way — contact us to coordinate timing.
Frequently Asked Questions
Can a witness also be the notary?
No. A notary cannot simultaneously serve as one of the required witnesses on the same document — they're distinct roles that need separate people.
Who can serve as a witness?
Generally, any adult (18 or older) who isn't a party with a direct interest in the document — a friend, coworker, or family member is often fine, though some documents restrict witnesses from being a named beneficiary or agent.
Do witnesses need ID like a notary requires?
Witnesses typically don't need to present ID to the notary the way the signer does, though the notary may still want to confirm who they are as part of completing the certificate accurately.
Why do some documents need both witnesses and a notary?
Documents with significant legal weight — powers of attorney, wills — often require both as layered protection: witnesses observe the signing directly, and the notary adds identity verification and an official seal.