How to Make a Will in South Dakota (2026): Requirements, Witnesses, Self-Proving Affidavit

Updated September 3, 2026. Quick answer for South Dakota: nobody publishes a reliable, state-specific median for what a will costs here, and the figures you will see quoted, including ours, are national. Anyone showing you a precise South Dakota number is estimating. What is genuinely South Dakota-specific, and what actually decides whether your will works, is how it has to be executed.

Putting a loan in writing? The interest limit, the signing rules and the time limit to sue, from the state’s own statutes: South Dakota promissory note.

The honest position on South Dakota pricing

We publish a national attorney median for a simple will of $625 (middle 50% $450–$1,000) and a DIY platform range of $129–$599. Attorney figures are the national medians from the LegalTemplates 2026 survey of 909 firms, verified July 23, 2026. They are national, not state-specific. Geographic multipliers are widely republished, but the primary source for them blocks automated verification, so we will not apply one to South Dakota and present the result as a South Dakota figure. When a defensible state-level dataset exists, this page will carry it and say where it came from.

What South Dakota law actually requires

This is the part that is genuinely state-specific, and the part that decides whether the document works at all. Every line below is read from the statute, with the citation attached:

• Witnesses: 2. S.D. Codified Laws §§ 29A-2-502, 29A-2-504, 29A-2-505
• If a beneficiary witnesses it: No-effect rule (modern UPC) per SDCL § 29A-2-505: search-snippet corroborated only, NOT independently confirmed by direct fetch of the primary statute this session.
• Notary required for the will to be valid: No for basic validity; notarization required only for the optional self-proving affidavit under SDCL § 29A-2-504: search-snippet corroborated only, not directly fetched this session.
• Handwritten wills: Recognized, and unusually permissive: SDCL § 29A-2-502 validates a holographic will ‘whether or not witnessed’ if the signature and material portions are in the testator’s handwriting: search-snippet corroborated only, not directly fetched this session.
• Electronic wills: Not verified: no South Dakota electronic-wills statute was located this session, but absence could not be confirmed at even a secondary structural level.

The full 44-jurisdiction comparison is on what each state requires for a will to be valid.

Does South Dakota give you a free form?

No. We found no complete statutory will form in the South Dakota code. California, Maine, Michigan, New Mexico and Wisconsin each print one in their own codes. In South Dakota your realistic routes are a DIY platform, a flat-fee attorney will, or an hourly engagement if the estate is complicated.

What skipping it costs in South Dakota

A will does not avoid probate: it directs it. What it prevents is the estate being distributed by South Dakota’s intestacy statute instead of by you, and it lets you name the executor rather than leaving the court to appoint one.

What a will costs nationally: every route priced, and the four situations where DIY fails.

Statutory text read at the state’s own legislature or official code site. Pricing figures are national and dated above. General information, not legal advice.