A person who observes the execution of a legal document, such as a will, and signs it to attest to its authenticity and proper execution. Most jurisdictions require wills to be witnessed by two or more disinterested parties who can later testify about the testator's capacity and the circumstances of signing.
A witness watches you sign your will and then signs it themselves to confirm they saw you do it and that you seemed mentally capable. Most states require at least two witnesses for a will to be valid.
⏱ When you'll encounter this term
- Executing a will—finding witnesses to sign
- Will contests questioning proper execution
- Probate court admitting will to probate
- Self-proving affidavits before witnesses and notary
"When Dad signed his will, two coworkers acted as witnesses. They watched him sign, then they signed below his signature. Years later when Dad died, one witness had to testify in court that Dad seemed mentally competent when he signed—that's why witnesses matter."
⚖️ Compare: Witness vs Notary
Observes signing. Required for wills. Usually two needed. Confirms testator signed. Can be any competent adult.
Verifies identity. Not required for will validity. One sufficient. Confirms signer is who they claim. Must be officially commissioned.
💡 Why this matters
Without proper witnesses, your will is invalid—as if you never made one. This means dying intestate, with the state deciding who inherits. Even if you have witnesses, choosing beneficiaries as witnesses can void their gifts. Finding appropriate witnesses and following formalities exactly is essential.
One small error in witnessing can invalidate an entire will.
⚠️ Common mistakes
- Having beneficiaries witness the will—this can void their inheritance
- Not having witnesses present at the same time you sign
- Using witnesses under 18 or mentally incapable
- Forgetting to have witnesses sign in your presence, or not signing in theirs
💡 Did you know?
Witnesses should generally be "disinterested"—not beneficiaries under the will. In many states, if a beneficiary witnesses the will, their gift becomes void (though the rest of the will remains valid). Always use witnesses who aren't inheriting anything to avoid complications.