Iowa: Will Execution Requirements
The short answer
To sign a valid will in Iowa you must be of full age (18) and sound mind, put the will in writing, sign it (or have someone sign your name in your presence at your direction), declare to two witnesses that the document is your will, and have those two witnesses sign it in your presence and in each other's presence. Notarization is not required. Iowa does not accept a handwritten (holographic) will or an electronic will, and it has no harmless-error rule — so a missing formality generally cannot be fixed after the fact.
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This is the general rule in Iowa. Ezel applies current Iowa law to your specific facts and answers with citations to the statutes.
| Governing law | Iowa Code Chapter 633 (Probate Code), Division VI (Wills). The core execution statute is § 633.279 ('Signed and witnessed'). Iowa keeps the traditional strict formalities — a written will, declared as such, signed before two witnesses who also sign in each other's presence. It has not adopted the Uniform Probate Code's execution article, does not recognize holographic wills, and is not an electronic-wills state |
|---|---|
| Minimum age & capacity | Any person of 'full age and sound mind' may make a will (§ 633.264); full age is 18 in Iowa. The statute states only 'sound mind'; Iowa case law supplies the capacity standard — the testator must understand they are making a will, know the natural objects of their bounty (their family), and know the nature and extent of their property |
| Writing & signature | Must be in writing and signed by the testator, or by another person 'in the testator's presence and by the testator's express direction writing the testator's name thereto' (§ 633.279(1)). Iowa adds a publication requirement: the will must be 'declared by the testator to be the testator's will' — the testator must tell the witnesses that the document is their will |
| Witnesses required | Two competent witnesses, who sign 'at the testator's request' and 'in the presence of the testator and in the presence of each other' (§ 633.279(1)) — a strict presence rule requiring both witnesses together. A witness must be at least 16 (§ 633.280). Interested witness: a gift to a witness does not void the will, but the interested witness forfeits any part of the gift exceeding what they would have inherited by intestacy, unless two disinterested witnesses also signed (§ 633.281) |
| Notarization & self-proving | Notarization is NOT required to sign a will — a notary is not a witness. A self-proving affidavit is available: the testator and the two witnesses may swear before a notary (or other officer authorized to take acknowledgments), at execution or later, using the form in § 633.279(2); a self-proved will can be admitted to probate without the witnesses' testimony |
| Handwritten (holographic) wills | No. Every Iowa will must be witnessed under § 633.279; there is no exception for an unwitnessed handwritten (holographic) will. A holographic will that was validly executed under the law of the place where it was made, or of the testator's domicile, may still be honored in Iowa under the foreign-will statute (§ 633.283) |
| Electronic & remote wills | Not permitted. Iowa has not enacted the Uniform Electronic Wills Act or any electronic-will statute, and § 633.279 requires two witnesses to sign in the physical presence of the testator and of each other. A will signed only electronically, or witnessed only over video, is not valid in Iowa |
| Harmless-error / curative doctrine | No. Iowa is a strict-compliance state — it has no harmless-error or substantial-compliance statute (it has not adopted UPC § 2-503). Section 633.279 says a will, 'to be valid, must' meet each listed formality, so a technical defect such as a missing witness or a witness who did not sign in the others' presence generally voids the will, however clear the testator's intent |
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Requirements one by one
Governing law
Iowa's will rules are in the Probate Code, Chapter 633, Division VI. The section that
controls how a will is signed is § 633.279. Iowa keeps the traditional, comparatively
strict formalities: the will must be in writing, you must declare to your witnesses that
it is your will, and two witnesses have to sign it in your presence and in each other's
presence. Iowa has not adopted the Uniform Probate Code's more relaxed execution rules,
does not recognize handwritten (holographic) wills, and has not enacted electronic wills.
Minimum age & capacity
"Any person of full age and sound mind" may make an Iowa will (§ 633.264). Full age is 18.
The statute states only the "sound mind" requirement; Iowa courts fill in the details —
you need enough mind and memory to understand that you are making a will, to know who your
close family members are, and to know the general nature and extent of your property.
Capacity is judged as of the moment you sign.
Writing & signature
The will must be in writing and signed by you, or by another person who writes your name
"in the testator's presence and by the testator's express direction" if you cannot sign
yourself (§ 633.279(1)). Iowa also requires something many states do not: publication. The
will must be "declared by the testator to be the testator's will" — you have to tell the
two witnesses, in some form, that the document they are signing is your will. They do not
need to read it or know its contents, but they must understand that it is your will.
Witnesses required
An Iowa will needs two competent witnesses, and Iowa's presence rule is strict: each
witness must sign "at the testator's request" and "in the presence of the testator and in
the presence of each other" (§ 633.279(1)). Unlike states that let witnesses sign
separately or within a reasonable time, Iowa expects the testator and both witnesses to be
together for the signing. A witness must be at least 16 years old (§ 633.280). On
interested witnesses, Iowa uses a partial "purging" rule: a gift to someone who also serves
as a witness does not void the will, but that witness forfeits whatever part of the gift
exceeds what they would have inherited had you died without a will — unless two
disinterested witnesses also signed (§ 633.281). The clean fix is to use two witnesses who
inherit nothing.
Notarization & self-proving
An Iowa will does not have to be notarized to be valid — a notary is not one of the two
required witnesses. Where a notary comes in is the optional self-proving affidavit under
§ 633.279(2): you and your two witnesses swear before a notary, either when you sign the
will or at any later date, using the statutory form. A self-proved will can then be admitted
to probate without tracking down the witnesses to testify, which is why it is strongly
recommended even though it is not required.
Handwritten (holographic) wills
Iowa does not recognize holographic wills. Every will made in Iowa must be witnessed under
§ 633.279, so a will you simply write out and sign by yourself, without witnesses, is not
valid here — no matter how clearly it is in your handwriting. There is one indirect route:
under the foreign-will statute (§ 633.283), a will that was validly executed under the law
of the place where you made it, or of your domicile at the time, is honored in Iowa. So a
handwritten will that was valid in a state that allows them can still be recognized after a
move to Iowa.
Electronic & remote wills
Iowa does not permit electronic wills. It has not enacted the Uniform Electronic Wills Act
or any state e-will statute, and § 633.279 requires two witnesses to sign in the physical
presence of the testator and of each other. A will that exists only as a computer file, or
that was witnessed only over a video call, is not valid in Iowa. Any temporary
remote-witnessing measures used elsewhere during the COVID-19 pandemic were emergency
actions, not permanent Iowa law.
Harmless-error / curative doctrine
Iowa has no harmless-error escape hatch. It has not adopted the Uniform Probate Code's rule
(§ 2-503) that lets a court excuse a defect when the testator's intent is clear. Section
633.279 says a will, "to be valid, must" meet each of its formalities — the mandatory
language courts read as strict compliance. A technical failure, such as only one witness or
witnesses who did not sign in each other's presence, will generally void the will even if
everyone agrees the person meant it as their will. This is the practical reason to follow
the signing steps exactly.
What trips people up
The witnesses must all be in the room together. Iowa's presence rule is stricter than
many states': both witnesses must sign in your presence and in each other's presence
(§ 633.279(1)). Passing a will around to be signed by one witness at the office and another
at home does not meet the rule, and because Iowa has no harmless-error doctrine, that kind
of slip usually cannot be fixed later.
You have to say it is your will. Iowa requires publication — you must declare to the
witnesses that the document is your will (§ 633.279(1)). Witnesses who sign a document
without being told it is a will can create a gap in proving the will later. A short, clear
statement at the signing avoids the problem.
A gift to a witness can be cut down. If someone who inherits under your will also serves
as a witness, § 633.281 makes them forfeit whatever their gift exceeds their intestate
share, unless two disinterested witnesses also signed. The will itself survives, but the
interested witness can lose part of their inheritance. Use witnesses who take nothing under
the will.
A handwritten note is not a valid Iowa will. Iowa does not accept holographic wills and
has no harmless-error rule to rescue one. An unwitnessed handwritten document, however clear,
generally leaves you with no valid will (unless it was validly executed under another state's
law before you moved).
Common questions
Does my Iowa will have to be notarized? No. Iowa requires two witnesses, not a notary
(§ 633.279(1)). Notarization only matters for the optional self-proving affidavit under
§ 633.279(2), which speeds up probate but never replaces the witnesses.
Can I handwrite my own will without witnesses? Not in Iowa. Iowa does not recognize
holographic wills; every will must be witnessed by two people (§ 633.279). A handwritten
will that was valid where you made it before moving to Iowa can still be honored, though
(§ 633.283).
Can a family member who inherits be a witness? They can serve without invalidating the
will, but it may cost them: § 633.281 makes an interested witness forfeit any gift beyond
their intestate share unless two disinterested witnesses also signed. Use witnesses who
inherit nothing.
Can I sign my will electronically or over video? No. Iowa has not adopted electronic
wills, and § 633.279 requires two witnesses to sign in your physical presence and each
other's. An electronic-only or video-witnessed will is not valid in Iowa.
Statutes and sources
- Iowa Code § 633.264 — who may make a will: any person of full age (18) and sound mind.
https://www.legis.iowa.gov/docs/code/633.264.pdf (accessed 2026-07-11) - Iowa Code § 633.279 — the execution rule: writing, signature, publication ("declared... to be the testator's will"), two witnesses signing in the presence of the testator and each other; plus the self-proving affidavit form.
https://www.legis.iowa.gov/docs/code/633.279.pdf (accessed 2026-07-11) - Iowa Code § 633.280 — competency of witnesses: a witness must be at least 16 and generally competent.
https://www.legis.iowa.gov/docs/code/633.280.pdf (accessed 2026-07-11) - Iowa Code § 633.281 — interested witnesses: a gift to a witness is not void, but the witness forfeits the excess over their intestate share unless two disinterested witnesses also signed.
https://law.justia.com/codes/iowa/title-xv/chapter-633/section-633-281/ (accessed 2026-07-11) - Iowa Code § 633.283 — a will validly executed under another state's or the testator's domicile's law is honored in Iowa (the foreign-will route for handwritten wills valid elsewhere).
https://www.legis.iowa.gov/docs/code/633.283.pdf (accessed 2026-07-11)
Source links
Every statute quoted above, linked, with the date we checked it.
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