A will must normally be proved in probate: someone has to show the court it was signed with the required formalities, which traditionally means locating the witnesses and getting their sworn testimony. Decades after a signing, witnesses move, forget, or die. The self-proving affidavit solves the problem at the signing table.
Signed by the testator and both witnesses before a notary, it is accepted by the probate court as substitute testimony: the will is admitted on the paperwork alone, saving the estate weeks of witness-hunting.
How a will becomes self-proved
The affidavit is a package deal at execution: the testator signs the will before two witnesses, the witnesses sign the will, and then all three sign the affidavit before a notary public, who administers the oath and seals it. The affidavit is stapled to or bound with the will and travels with it. Almost every state recognizes self-proved wills, most following the Uniform Probate Code model, though the exact wording each state prescribes differs slightly, which is why the affidavit recites your state. A few states treat properly witnessed wills as self-proved without a separate affidavit, and a small number handle proof differently, so check local practice if your state's probate forms mention something else.
The affidavit is not the will's signature
Notarizing a will does not replace the two witnesses: the will itself must still be signed and witnessed under state law. The affidavit is an extra layer on top of a properly executed will, and it cannot cure a will that was signed without witnesses.
Adding one to an existing will
Most states allow a will to be made self-proved after the fact: the testator and the original witnesses appear together before a notary and sign the affidavit referencing the earlier signing date. That requires the same witnesses to be available, which is exactly the fragility the affidavit exists to remove, so the practical advice is to do it at the original signing or as soon as possible afterward. If a witness is no longer available, the will remains valid; it simply is not self-proved, and probate will require other proof of due execution, such as testimony from the remaining witness or proof of the signatures.
Who signs, and who should not witness
- The testator: swears the document is their will and that they signed freely, of sound mind, and over 18.
- Two adult witnesses: swear they watched the testator sign and signed in the testator's and each other's presence. Choose disinterested witnesses, people who inherit nothing under the will, since a beneficiary-witness can forfeit their gift in many states.
- A notary public: administers the oath, signs, and seals. The notary cannot double as one of the two witnesses in most settings, so bring the notary plus two others.
Frequently asked questions
Is a self-proving affidavit required for a will to be valid?
No. A will signed with the state's witness formalities is valid without one. The affidavit only changes how the will is proved at probate: with it, the court accepts the will on the documents; without it, someone must obtain witness testimony or other proof of execution.
Can I add a self-proving affidavit to a will I signed years ago?
In most states yes, if the testator and the original witnesses can all appear before a notary and sign the affidavit. If the witnesses are unavailable, the will stays valid but cannot be self-proved this way; consider re-executing the will with new witnesses and an affidavit instead.
Do all states accept self-proving affidavits?
Nearly all do, and most follow similar Uniform Probate Code language. A few states treat a properly witnessed will as self-proved automatically or handle proof through their own procedures. The affidavit costs one notarization and never hurts, so the standard practice is to attach one.
Does the notary count as a witness?
Plan on the notary being a third person. The will needs two witnesses, and the affidavit needs a notary to swear all three signers; most practitioners keep the roles separate to avoid state-specific complications, so a signing table has the testator, two witnesses, and a notary.
Where is the affidavit kept?
Attached to the will itself, as its final pages, and stored with the original will in a fireproof box or with the attorney or court that holds it. An affidavit separated from the will it proves has no effect, so they must stay together.