South Dakota: Will Execution Requirements

Requirements one by one

Governing law

South Dakota's will-execution rules are in the South Dakota Uniform Probate Code, SDCL Title 29A,
Chapter 2, Part 5. The core statute is § 29A-2-502 (holographic wills and the writing, signature,
two-witness rule for other wills); § 29A-2-501 says who may make a will; § 29A-2-503 ("writings
intended as wills") is the harmless-error provision; § 29A-2-504 provides the self-proving
affidavit; and § 29A-2-505 covers who may witness and the interested-witness rule. South Dakota
adopted the modern Uniform Probate Code in 1995, which gives it several features together:
holographic wills, a "conscious presence" witnessing rule, the no-effect interested-witness rule,
and a harmless-error escape hatch. South Dakota has not adopted electronic wills.

Minimum age & capacity

"An individual eighteen or more years of age who is of sound mind may make a will" (§ 29A-2-501).
You must be at least 18 — there is no emancipated-minor exception — and of sound mind. The statute
does not define "sound mind"; South Dakota courts apply the familiar test: you must understand
that you are making a will, know the people who would normally receive your property (the natural
objects of your bounty), and know the general nature and extent of what you own. Capacity is
judged at the moment of signing.

Writing & signature

A South Dakota will (other than a holographic one) must be in writing and "signed by the testator
or in the testator's name by some other individual in the testator's conscious presence and by the
testator's direction" (§ 29A-2-502(b)). If you cannot sign yourself, someone may sign for you —
but only in your conscious presence, meaning you are aware it is happening, and at your direction.
There is no rule that the signature appear at the end of the document.

Witnesses required

A South Dakota will needs at least two witnesses, and South Dakota uses the "conscious presence"
rule: each witness must sign "in the conscious presence of the testator" and must have witnessed,
in the testator's conscious presence, either the signing of the will or the testator's
acknowledgment of the signature (§ 29A-2-502(b)(3)). "Conscious presence" means you are aware,
through sight, hearing, or general consciousness, that the witnesses are signing — it is broader
than being in the same line of sight, but it is not the loose "reasonable time" rule some states
use. A witness need only be "generally competent" (§ 29A-2-505(a)).

On interested witnesses, South Dakota uses the modern no-effect rule: "The signing of a will by an
interested witness does not invalidate the will or any provision of it" (§ 29A-2-505(b)). A
beneficiary who also serves as a witness keeps the gift, and the will stands. Using disinterested
witnesses is still good practice because it removes an argument for undue influence, but it is not
required for validity.

Notarization & self-proving

A South Dakota will does not have to be notarized to be valid — a notary is not one of the two
required witnesses, and South Dakota does not let a notarized will stand in for the witnesses the
way a few states do. What a notary supports is the self-proving affidavit under § 29A-2-504, which
the testator and witnesses may sign with the will or later before an officer authorized to
administer oaths. A self-proved will can be admitted to probate without bringing the witnesses
back to testify. South Dakota adds a backstop: a signature on the self-proving affidavit "is
considered a signature affixed to the will, if necessary to prove the will's due execution"
(§ 29A-2-504(c)).

Handwritten (holographic) wills

South Dakota recognizes holographic wills. Under § 29A-2-502(a), a will is valid "whether or not
witnessed, if the signature and material portions of the document are in the testator's
handwriting." Only the signature and the material (dispositive) provisions must be in your own
hand; preprinted or typed portions are allowed, and § 29A-2-502(c) lets a court use extrinsic
evidence — including the non-handwritten parts — to establish that you intended the document as
your will. There is no date requirement, though dating a handwritten will is still sensible.

Electronic & remote wills

South Dakota does not permit electronic wills. It has not enacted the Uniform Electronic Wills Act
or any electronic-wills statute, so § 29A-2-502's requirement of a physically signed writing
witnessed by two people in the testator's conscious presence still controls. A will that exists
only as a computer file, that was "signed" by typing a name, or that was witnessed only over video
is not a valid South Dakota will. A fully handwritten document may still qualify as a holographic
will, and the harmless-error rule can sometimes rescue a defective document.

Harmless-error / curative doctrine

South Dakota has a harmless-error rule, one of the reasons its law is comparatively forgiving.
Under § 29A-2-503 ("writings intended as wills"), a document not executed in compliance with
§ 29A-2-502 is nonetheless "treated as if it had been executed in compliance" if the proponent
establishes "by clear and convincing evidence" that the decedent intended it as their will (or as
a revocation, alteration, or revival of a will). That can save a will that missed a formality —
for example, one signed by only one witness. But the clear-and-convincing standard is demanding,
there must still be a document or writing, and relying on it means a contested, expensive probate.
Meeting the ordinary formalities is far safer.

What trips people up

"Conscious presence" is a safety margin, not a shortcut. South Dakota lets a witness sign in
your conscious presence (§ 29A-2-502(b)(3)), which is broader than direct line of sight, but the
cleanest practice is still to have both witnesses in the room, watch you sign, and sign right
then. Do not sign alone and mail the will to witnesses later.

Notarizing a will is not the same as witnessing it. Taking a typed will to a notary does not
satisfy § 29A-2-502, which requires two witnesses; South Dakota has no notarized-will substitute
for the witnesses. Notarization matters only for the self-proving affidavit under § 29A-2-504.

A handwritten will still needs the key terms in your hand. A holographic will requires the
signature and the material provisions to be handwritten (§ 29A-2-502(a)). A typed will you merely
sign is not a holographic will — it has to meet the ordinary two-witness rules instead.

Harmless error is a last resort, not a plan. Section 29A-2-503 can rescue a defective will,
but only with clear and convincing evidence of intent and only after a contested proceeding. Do
not rely on it in place of signing correctly.

Common questions

Does my South Dakota will have to be notarized? No. South Dakota requires two witnesses, not a
notary (§ 29A-2-502). Notarization only supports the optional self-proving affidavit under
§ 29A-2-504, which makes probate easier but is not required for validity.

Can I handwrite my own will without witnesses? Yes. South Dakota recognizes holographic wills:
if your signature and the material provisions are in your own handwriting, the will is valid with
no witnesses (§ 29A-2-502(a)). There is no date requirement, but keep the gifts clear.

What happens if only one person witnessed my will? Ordinarily that fails the two-witness rule,
but South Dakota's harmless-error statute (§ 29A-2-503) can still save it if there is clear and
convincing evidence you intended the document as your will. That is an uphill, costly fight — use
two witnesses.

Can I sign my South Dakota will online or over video? No. South Dakota has not adopted
electronic wills, so a will must be a physical signed writing witnessed in person by two people
(§ 29A-2-502). Signing electronically or witnessing by video does not make a valid South Dakota
will.

Statutes and sources

• SDCL § 29A-2-501 — who may make a will: an individual 18 or older of sound mind.
  https://sdlegislature.gov/Statutes/29A-2-501 (accessed 2026-07-11)
• SDCL § 29A-2-502 — holographic wills, and execution of other wills: writing, signature (or a proxy in the testator's conscious presence), two witnesses in the testator's conscious presence; intent by extrinsic evidence.
  https://sdlegislature.gov/Statutes/29A-2-502 (accessed 2026-07-11)
• SDCL § 29A-2-503 — harmless error ("writings intended as wills"): a noncompliant document is treated as a valid will on clear and convincing evidence of the decedent's intent.
  https://sdlegislature.gov/Statutes/29A-2-503 (accessed 2026-07-11)
• SDCL § 29A-2-504 — self-proving affidavit; a signature on the affidavit counts as a signature on the will if needed to prove due execution.
  https://sdlegislature.gov/Statutes/29A-2-504 (accessed 2026-07-11)
• SDCL § 29A-2-505 — who may witness (generally competent); an interested witness does not invalidate the will or lose the gift.
  https://sdlegislature.gov/Statutes/29A-2-505 (accessed 2026-07-11)