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South Dakota writes its will statute backwards from every other state. SDCL § 29A-2-502 states the handwritten will rule first, then defines the ordinary witnessed will as “a will not valid as a holographic will.” The practical effect is the same, but the ordering tells you something: South Dakota treats the handwritten will as the baseline, not the exception. Its intestacy statute is the shortest in the country — two branches, no parent tier — and there is no state death tax of any kind. Online services prepare a South Dakota-specific will for $199–$299.
Most South Dakota adults can finish a legally valid will in under an hour.
Two witnesses, a signature, and clear wishes — that’s the whole requirement. An online service like Trust & Will prepares a South Dakota-specific will with the witness pages ready to sign.
Disclosure: we earn a commission if you buy through the Trust & Will links here, at no extra cost to you. Complex situations belong with an attorney and we say so below.
South Dakota Will Requirements (2026)
Section 29A-2-502 is titled “Holographic will—Validity of non-holographic will—Establishing intent,” and it opens with the handwritten rule:
“(a) A will is valid as a holographic will, whether or not witnessed, if the signature and material portions of the document are in the testator’s handwriting.”
Only then does subsection (b) describe what everyone else calls the ordinary will — “A will not valid as a holographic will must be”:
| Requirement | South Dakota rule | Statute |
|---|---|---|
| In writing | Required — South Dakota has adopted no electronic wills act | § 29A-2-502(b)(1) |
| Signed | By you, or in your name by another in your conscious presence and at your direction | § 29A-2-502(b)(2) |
| Witnessed | Two or more individuals who sign in your conscious presence, having witnessed — also in your conscious presence — the signing or your acknowledgment | § 29A-2-502(b)(3) |
| Notarized | Not required for validity | § 29A-2-504 |
South Dakota is stricter than most Uniform Probate Code states on the witnesses. The standard UPC lets a witness sign “within a reasonable time after” witnessing, from anywhere — that is how Montana, Maine and Alaska do it. South Dakota requires the witnesses to sign in the testator’s conscious presence. They have to be there.
Who can make a will: “An individual eighteen or more years of age who is of sound mind may make a will” (§ 29A-2-501).
Intent can be proved from outside the document. Under § 29A-2-502(c), intent that the document constitute your will may be established by extrinsic evidence — including, for holographic wills, portions of the document that are not in your handwriting. A preprinted form with the operative terms written in by hand can therefore qualify.
South Dakota’s Harmless-Error Rule
Section 29A-2-503, “Writings intended as wills,” gives South Dakota the Uniform Probate Code’s dispensing power: a document that fails the execution formalities may still be treated as a will where the proponent establishes by clear and convincing evidence that the decedent intended it as such.
Between handwritten wills, extrinsic evidence of intent, and harmless error, South Dakota is forgiving about form. That is a backstop, not a plan — harmless error is a litigated remedy that requires a court proceeding and a heavy burden of proof while the estate sits open.
Electronic wills are not authorized. South Dakota has not adopted the Uniform Electronic Wills Act. An online service can prepare your South Dakota will; the signing happens on paper, with both witnesses present.
Dying Without a Will in South Dakota: Two Branches, and That’s All
Most states run a four- or five-tier ladder. South Dakota § 29A-2-102 has two:
| Your situation | What your spouse receives |
|---|---|
| No descendant survives you, or all your descendants are also your spouse’s | The entire intestate estate (§ 29A-2-102(1)) |
| You have a descendant who isn’t your spouse’s | First $100,000 + one-half of the balance (§ 29A-2-102(2)) |
Two things are conspicuously absent, and both favor the spouse.
First, there is no parent tier. A childless South Dakota widow or widower takes the entire estate even if the decedent’s parents are living. Nearly every other Uniform Probate Code state carves out a share for surviving parents — North Dakota next door gives them a quarter of everything above $300,000, and New Hampshire gives them a quarter above $250,000. South Dakota gives them nothing where a spouse survives.
Second, South Dakota does not ask whether your spouse has children from elsewhere. Only your outside children reduce their share. In West Virginia, a spouse’s own outside children cost them 40% of the estate; in South Dakota they cost nothing.
The result is one of the most spouse-favorable intestacy statutes in the country. That is not a reason to skip a will — no default rule names a guardian for your children, and a blended family still splits the estate — but it is worth knowing what the default actually does.
South Dakota Has No Death Tax
South Dakota has no estate tax and no inheritance tax. The state inheritance tax was repealed by South Dakota voters effective July 1, 2001, and no estate tax replaced it. Only the federal estate tax can reach a South Dakota estate. Compare the states in our state-by-state comparison.
What a Will Costs in South Dakota
| Route | Typical cost | What you get |
|---|---|---|
| Handwritten | $0 | Valid if the signature and material portions are in your hand — South Dakota states this rule first, but it is still the most-contested format |
| Online service | $199 individual / $299 couple | South Dakota-specific will with witness pages, done in about an hour |
| South Dakota attorney | Flat fees vary — Sioux Falls and Rapid City run above rural counties | Custom drafting and counsel, particularly for ranch and farm succession |
Online pricing verified against Trust & Will’s published rates (August 2026). The State Bar of South Dakota publishes no fee survey, so we quote no attorney figures we can’t source. See how South Dakota compares with the rest of the country.
What a South Dakota Will Does Not Do
1. A will does not avoid probate. South Dakota probate is a circuit court process on the public record, though informal probate handles most uncontested estates. South Dakota also offers transfer-on-death deeds. See what a living trust costs in South Dakota and our guide to avoiding probate.
2. A will does not remove your spouse’s elective share. South Dakota has an augmented-estate elective share in Title 29A.
3. A will does not cover incapacity, and does not override beneficiary designations. Pair it with a durable power of attorney and a health care directive — see the five documents every family needs.
Will vs. Trust for South Dakota Families
Every South Dakota adult needs a will. The intestacy default is generous to a spouse, but it names no guardian for your children, and it still splits the estate if you have a child from an earlier relationship.
With no state death tax, the South Dakota trust question is about probate avoidance, privacy, and passing land intact — plus the fact that South Dakota is one of the country’s leading trust jurisdictions, with no rule against perpetuities and strong asset-protection law. That last point is why people from other states set up trusts here, which is a separate question from whether you need one. Start with Trust vs. Will: Which Does Your Family Need? and the numbers in our South Dakota living trust cost guide.
If the will is what you need today, Trust & Will’s South Dakota package includes the witness pages, guardianship nominations, and healthcare documents — build your South Dakota will here.
FAQ
Does a will have to be notarized in South Dakota?
No. Validity takes your signature and two or more witnesses who sign in your conscious presence, having witnessed the signing or your acknowledgment in your conscious presence (§ 29A-2-502(b)). The notary appears only in the optional self-proving affidavit.
Are handwritten wills legal in South Dakota?
Yes — and the statute says so first. Section 29A-2-502(a) provides that a will is valid as a holographic will, witnessed or not, if the signature and material portions are in your handwriting. No date is required.
Do my witnesses have to be present when I sign in South Dakota?
Yes. Section 29A-2-502(b)(3) requires the witnesses to sign in the testator’s conscious presence, having witnessed the signing or acknowledgment in your conscious presence — stricter than the usual UPC rule that lets a witness sign within a reasonable time from anywhere.
Can I make an electronic will in South Dakota?
No. South Dakota has not adopted the Uniform Electronic Wills Act.
What happens if I die without a will in South Dakota?
Your spouse takes the entire estate if you leave no descendants or if all your descendants are also theirs — even if your parents survive you. If you leave a descendant who is not your spouse’s, they take the first $100,000 plus half the balance (§ 29A-2-102).
Does South Dakota have an estate or inheritance tax?
No. South Dakota voters repealed the state inheritance tax effective July 1, 2001, and there is no state estate tax.
South Dakota Law Cited on This Page
- SDCL § 29A-2-501 — who may make a will
- SDCL § 29A-2-502 — holographic will; validity of non-holographic will; establishing intent
- SDCL § 29A-2-503 — writings intended as wills (harmless error)
- SDCL § 29A-2-102 — share of the spouse
- South Dakota Department of Revenue — taxes
Update log — August 2026: page created. Execution, holographic, harmless-error and intestacy rules verified against the official South Dakota Codified Laws published by the South Dakota Legislature. Reviewed when South Dakota law changes.