Witnesses for a will: who qualifies and how many do you need?

A short note before you start

This guide explains how witness rules generally work for a will made in the United States. It is general information, not legal, tax or financial advice. Every state sets its own rules for who can witness a will, how many are needed, and what happens if a witness also inherits, so confirm specifics with your state's self-help court pages or an estate planning attorney before signing anything.

What is a witness for a will, and why does it matter?

A witness to a will is a person who watches the will-maker (the "testator") sign, or acknowledge a signature already on it, and then signs their own name to confirm what they saw. Witnesses exist to prove later that the will is genuine and the signer appeared to know what they were doing. Without valid witnesses, a court can refuse to accept the will, and the estate is then treated as if there was none¹².

The Uniform Probate Code, the model law many states have adopted in some form, sets the baseline: a will must be signed by at least two individuals, each of whom witnessed the testator sign (or acknowledge an existing signature or the will itself) and then signed within a reasonable time afterward¹. States adjust the details, so the exact wording that governs your will depends on where you sign it.

How many witnesses does a will need?

Most states require exactly two witnesses. A few require more, and a few civil-law-influenced states add a notary on top.

This is a sample, not a full list. Search "[your state] witness requirements for a will" or check your state court's self-help probate page before signing, since a state can change its own rule at any time.

Who can (and cannot) be a witness?

A qualifying witness is generally an adult, mentally competent, able to see the testator sign, and willing to later testify about what they saw. Common disqualifications: too young, unable to see the signing, or standing to inherit under the will.

• Age. Most states set the minimum at 18. Texas allows witnesses as young as 14⁶.
• Mental competence. A witness must understand the document is a will and be able to describe what they witnessed later.
• Ability to see. Several states require a witness to be able to see the testator sign, ruling out someone who is blind¹⁴.
• Not a beneficiary, ideally. Most states allow a beneficiary to witness, but doing so can void or reduce that witness's own inheritance, or invite a challenge over undue influence.
• The executor can witness. Being named executor does not disqualify someone from also witnessing, as long as they are not also a beneficiary in a state that penalizes that.
• A spouse of a beneficiary. Some states, including Vermont, extend the same restriction to a witness's spouse (14 V.S.A. Section 10, checked 2026-09-25).

What happens if a witness is also a beneficiary?

Under the modern rule most UPC states follow, a beneficiary can witness a will without invalidating it, and can still receive their gift¹. Some non-UPC states take an older, stricter approach: the will stays valid, but the gift to the interested witness is void or reduced, unless enough other disinterested witnesses also signed.

Vermont's rule shows the pattern: a gift to a witness, or to a witness's spouse, is voidable unless two other competent, disinterested witnesses also signed the will (14 V.S.A. Section 10, checked 2026-09-25). So a will with three witnesses, one of whom is a beneficiary, can still protect that beneficiary's gift if the other two are disinterested.

Because the rules differ by state, and a beneficiary-witness invites questions even where legal, the simplest approach is to choose two witnesses who inherit nothing under the will.

What is a self-proving affidavit, and do you need one?

A self-proving affidavit is a separate, notarized statement, signed by the testator and both witnesses at the same sitting, swearing the will was properly executed. It is optional in most states, but saves the family a step later: without it, a probate court may need to track down a witness to testify, in person or by written statement, that the signing happened as claimed¹.

To make a will self-proving, you need a notary public present at the same signing as the testator and witnesses, not just the witnesses on their own¹. Ask the notary or attorney handling the signing whether your state's version of the affidavit is available.

Can a will be witnessed remotely, or signed electronically?

In most states, no: the testator and witnesses must be physically in the same room. A small number of states have passed their own version of the Uniform Electronic Wills Act, allowing a will to be signed and witnessed electronically, sometimes with witnesses appearing by live video. Colorado, North Dakota, Utah, Washington, Idaho, Minnesota and Oklahoma have adopted it, with the District of Columbia also participating⁴.

Florida allows remote online witnessing under specific conditions: witnesses appear by real-time, two-way audio-video technology supervised by an online notary, and the option is unavailable if the signer reports impairment or needing daily-care assistance (Florida Statutes Section 732.502, checked 2026-09-25). If your state is not one of the states above, assume in-person witnessing is required.

New York joined 14 other states and DC in authorizing electronic wills, signing its Electronic Wills Act in December 2025, effective June 10, 2027¹⁶.

Step-by-step: how to have a will properly witnessed

1. Confirm your state's exact witness count and any age or competence rules before the signing day.
2. Choose witnesses who inherit nothing under the will and are not married to anyone who does.
3. Pick adults likely to still be reachable years from now, since a witness may need to be located if the will is ever contested.
4. Gather the testator and all witnesses in the same room at the same time. Do not sign in advance or separately unless your state explicitly allows it.
5. The testator signs the will, or points to an existing signature and confirms it, while every witness watches.
6. Each witness signs their own name, and usually prints their address, in the testator's presence.
7. If adding a self-proving affidavit, a notary public administers the oath and notarizes it at the same sitting.
8. Store the signed original safely and tell your executor where to find it; a photocopy is not a substitute in most probate courts.

What should go in a family guide about your will's witnesses?

A family guide should record where the signed original will is kept, not its contents. Note the firm that holds a copy if an attorney drafted it, whether it includes a self-proving affidavit, and the approximate signing date, so your executor knows what to look for. This is the kind of information a family guide, such as the one Omliva helps families build, keeps in one place, so an executor is not searching a house for a document that may be in a safe deposit box or an attorney's file instead.

• Where the signed original is stored (home safe, attorney's office, safe deposit box)
• Attorney or firm name and contact information, if one drafted the will
• Whether a self-proving affidavit was signed and notarized
• Approximate signing date, to match against any later codicils
• Names of the witnesses, if known, in case a court needs to reach them

See our executor checklist for what happens once the will is located, and our estate planning checklist for other documents worth tracking alongside it.

What mistakes commonly invalidate witness signatures?

Most witness problems come from rushing the signing or misunderstanding what "presence" means in your state, not from picking the wrong number of witnesses.

• Signing separately. In states that require witnesses present "at the same time," such as California, signing at different times or in different rooms can void the attestation⁵.
• Using an interested witness by accident. A friend also named in the will, or married to someone who is, can jeopardize their own gift depending on the state.
• Missing the age minimum. A well-meaning teenage grandchild under the state's minimum age cannot serve as a witness.
• Skipping witnesses because the will is notarized. Notarizing does not replace witnesses; it only supports a self-proving affidavit that still requires witnesses¹.
• Losing touch with witnesses. If a witness cannot be located or has died by probate, a state without a self-proving affidavit may need other proof of execution.
• Assuming one state's rule applies everywhere. A will validly witnessed in one state does not automatically fail in another, but a family that moves should have it reviewed against the new state's rules.

When to get professional help

A do-it-yourself will kit can work for a simple estate, but have an attorney review the signing if the will is complex, a family member could realistically contest it, you are naming a beneficiary as a witness because no one else is available, you live in a state with civil-law rules like Louisiana, or you want a self-proving affidavit and are unsure of your state's form. A notary who regularly handles wills can also confirm your state's current witness count, since these rules do shift.