What Is a Self-Proving Affidavit and Why Does It Matter?

Signing · 5 min read · Updated September 16, 2026

A self-proving affidavit is a short sworn statement, signed by the testator and the witnesses in front of a notary, confirming that the will was signed properly. It is attached to the will and lets the probate court accept the will without calling the witnesses to testify. Nearly every state provides for one, it adds only a few minutes to the signing, and it can save the family weeks of delay and expense after death.

The problem it solves

When a will is offered for probate, the court needs evidence that it was signed according to the state’s formalities: by the testator, voluntarily, in front of the required witnesses. Traditionally that evidence came from the witnesses themselves, who would appear in court or sign a sworn statement after the death.

That works when the witnesses are easy to find. Wills are often signed decades before they are needed. Witnesses move, change names, lose touch, become ill, or die. Locating a witness from a signing thirty years ago can hold up an estate for months, and if no witness can be found the executor has to prove the signing another way, sometimes through handwriting experts.

The self-proving affidavit collects the witnesses’ testimony at the moment of signing, under oath, before a notary. Because it is sworn, the court can accept it in place of live testimony. The will is said to “prove itself.”

What it says

The exact language is set by each state’s statute, and the wording differs, but the substance is the same everywhere. The testator swears that:

• The document is their will.
• They signed it willingly, or directed someone to sign for them.
• They were of legal age and sound mind and under no undue influence.

The witnesses swear that:

• The testator declared the document to be their will and signed it in their presence.
• They signed as witnesses in the testator’s presence and at the testator’s request.
• To the best of their knowledge, the testator was of legal age, sound mind, and not under duress.

The notary then certifies that everyone appeared, was identified, and swore to the statement.

Some states build this attestation into the will’s signature page itself, so that a single signing satisfies both the will and the affidavit. Others require a separate page. The will produced on this site uses the format the selected state expects, and the state’s own affidavit language is used where the statute prescribes it.

How it is signed

The affidavit is signed as part of the will-signing ceremony. See How to Sign a Will So It Holds Up for the full process.

1. The testator signs the will in front of the witnesses.
2. The witnesses sign the will.
3. The testator and witnesses then sign the affidavit in front of the notary, who administers the oath, signs, and applies a seal.

The notary must be present for step 3. It is convenient to have the notary present for the entire ceremony, and many notaries will also serve as one of the witnesses if they are not a beneficiary, though some states prohibit the notary from being a witness to the same document. The safe practice is two witnesses plus a separate notary.

A few states allow the affidavit to be signed later than the will, in a separate ceremony. Most people sign both at once because getting everyone back together later is difficult.

Affidavit versus notarized will

A common misunderstanding is that a self-proving affidavit “notarizes the will.” It does not. The will is validated by the witnesses. The affidavit is a separate document that proves the witnessing took place. A will with a notary seal but no witnesses is invalid in most states. A will with witnesses but no affidavit is valid but not self-proved.

The distinction matters because a testator who skips the witnesses and goes straight to a notary has produced nothing usable.

What happens without one

The will is still valid if it was properly witnessed. But at probate, the court will require proof of execution. Depending on the state, this may mean:

• One or both witnesses sign a sworn statement after the death.
• One or both witnesses appear in court.
• If witnesses cannot be found, other evidence such as handwriting verification or testimony from people familiar with the signatures.

Each of these adds time. Some states also allow an interested party to demand witness testimony even when an affidavit exists, if they are contesting the will, but the affidavit shifts the burden and strengthens the will’s position.

States without a self-proving affidavit

A small number of states do not use the self-proving affidavit at all, relying instead on other procedures for proving a will. In those states, the signing cover sheet says so and explains what the court expects. The state page at /wills/ reflects each state’s approach.

Louisiana’s notarial testament is a different mechanism entirely. There the notary and witnesses sign the will itself with statutory attestation language, and that form is what makes the will valid, not a separate affidavit.

Practical tips

• Use the state’s form. States that prescribe affidavit language expect it more or less verbatim. Substituting a generic affidavit can lead a court to reject it.
• Attach it to the will and keep the two together. A detached affidavit is hard to connect to the will later.
• Confirm the notary’s commission is current and that the seal and signature are legible.
• Do not sign the affidavit before the will. The affidavit swears that the will was already signed.
• Keep the witnesses’ printed names and addresses on the will’s signature page as well, in case anyone needs to locate them.

Frequently asked questions

Is a self-proving affidavit required?

No. A will is valid without one if it was properly witnessed. The affidavit is optional but strongly recommended because it allows the will to be admitted to probate without locating the witnesses. Confirm with a licensed attorney how a specific state handles wills that are not self-proved.

Can the affidavit be signed after the will?

In some states, yes, in a later ceremony with the same witnesses and a notary. In practice, signing both at once is far simpler, and this site’s signing cover sheet assumes a single ceremony.

Does the affidavit need the same witnesses who signed the will?

Yes. The witnesses swear to what they saw. Different people cannot attest to a signing they did not witness.

Can the notary also be a witness?

Some states allow it if the notary is not a beneficiary; others do not. Using two separate witnesses plus a notary avoids the question and is accepted everywhere.

Ready to make your will?

The questionnaire at /start produces a will with a self-proving affidavit in the format the selected state uses, plus a signing cover sheet noting whether a notary is needed. Affidavit rules and signing requirements differ from state to state; see the guide for a specific state at /wills/, and have the finished will reviewed by a licensed attorney before signing.

This article is general information, not legal advice. Laws vary by state and change. Confirm anything that matters to you with a licensed attorney in your state.