Key Takeaways

  • The notary must positively identify every signer
  • Personal knowledge of the signer is the highest form of identification
  • Acceptable ID includes current government-issued photo identification
  • Credible witness identification may be used when no ID is available
  • The notary is liable for negligent identification
Last updated: January 2026

Satisfactory Evidence of Identity

Proper identification is the cornerstone of notary work. Your primary duty is to prevent fraud by verifying that signers are who they claim to be. Failure to properly identify a signer can result in liability and loss of your commission.

Methods of Identification

New York recognizes several methods to identify signers:

MethodDescriptionReliability
Personal KnowledgeYou personally know the signerHighest
Documentary EvidenceGovernment-issued photo IDHigh
Credible WitnessOne or two witnesses who know the signerAcceptable

Personal Knowledge

Personal knowledge means you know the signer well enough to be certain of their identity without any documentation.

What Constitutes Personal Knowledge?

SufficientNOT Sufficient
Long-standing friendshipMet once before
Family relationshipSame neighborhood
Professional relationship over timeSame workplace (without interaction)
Multiple personal interactionsSomeone vouches for them

Best Practice: Even with personal knowledge, ask for ID as an extra precaution. This protects you and the transaction.

Documentary Evidence (ID Documents)

Acceptable Forms of Identification

Acceptable IDRequirements
Driver's licenseCurrent, photo, issued by any US state
PassportCurrent, US or foreign
Government-issued IDCurrent, with photo
Military IDCurrent, with photo
State-issued non-driver IDCurrent, with photo

What to Check on ID

ElementVerify
PhotoResembles person before you
NameMatches name on document
ExpirationID is not expired
Physical descriptionHeight, eye color roughly match
SignatureCompare to signature on document (if possible)

Unacceptable Forms of ID

NOT AcceptableWhy
Expired IDNo longer valid government identification
Social Security cardNo photo
Credit/debit cardNo government verification
Student IDNot government-issued (usually)
Employee IDNot government-issued

Credible Witness Identification

When a signer has no acceptable ID, you may use credible witnesses to identify them.

Requirements for Credible Witness

The credible witness must:

  1. Personally know the signer
  2. Be known to the notary (or present acceptable ID)
  3. Have no interest in the transaction
  4. Take an oath regarding the signer's identity

One Credible Witness vs. Two

ScenarioWitnesses Needed
Witness known to notary personallyOne witness
Witness identified by acceptable IDTwo witnesses (in some states)

New York Practice: Credible witness identification should be used sparingly and only when absolutely necessary.

Refusal to Notarize

You must refuse to notarize if:

  • Signer cannot provide satisfactory identification
  • ID appears altered, expired, or fraudulent
  • Photo doesn't match person before you
  • Signer is impaired and cannot understand the transaction
  • You have reasonable doubts about identity

Liability for Improper Identification

ConsequenceResult
Civil liabilitySued for damages caused by fraud
Commission revocationLoss of notary authority
Criminal liabilityPotential criminal charges
Bond claimClaim against your surety bond

On the Exam

Expect 3-4 questions on identification:

  • Personal knowledge: Highest form of ID
  • Acceptable ID: Current government-issued photo ID
  • Expired ID: NOT acceptable
  • Refusal: Required if cannot properly identify
  • Liability: Notary responsible for negligent identification
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Identity Verification Flowchart
Test Your Knowledge

What is the highest form of identification for notary purposes?

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Test Your Knowledge

Can a notary accept an expired driver's license as identification?

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Test Your Knowledge

When should a notary refuse to notarize a document?

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