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Prenuptial Agreement Cost in South Dakota

Last updated 5 min read

A prenuptial agreement in South Dakota typically costs $1,500 – $2,500 for a simple agreement and up to $4,000 – $7,000 for complex estates. South Dakota prenup costs depend on attorney rates, how complex your finances are, and whether both spouses retain their own lawyer. This page isn't legal advice — it's a plain-English summary of how a prenup in South Dakota works, what it costs, and what the state requires.

Cost breakdown

Complexity Typical cost Who this fits
Simple $1,500 – $2,500 W-2 income, no business, no kids from prior relationships
Moderate $2,500 – $4,000 Real estate, retirement accounts, modest separate property
Complex $4,000 – $7,000 Business interests, multi-state property, expected inheritance

Average attorney rate in South Dakota: $150–$250/hr. Both spouses hiring separate attorneys typically adds 50–75% to the total bill.

What South Dakota law requires

  • In writing: Yes — required.
  • Notarization: Not required, but recommended for evidentiary purposes.
  • Independent counsel: Strongly recommended (and often outcome-determinative if litigated).
  • Community property state: No — equitable distribution applies in the absence of an agreement.

The controlling statute is S.D. Codified Laws §§25-2-16 to 25-2-25 — read the full text on the South Dakota legislature site.

South Dakota adopted the UPAA (not UPMAA — a frequent misconception). Standard UPAA defenses apply. Importantly, South Dakota courts will sever and void any alimony waiver in a prenup as against public policy, while enforcing the remaining property provisions.

A notable South Dakota case

Sanford v. Sanford, 2005 SD 34, 694 N.W.2d 283. South Dakota Supreme Court held alimony waivers in prenups are void as against public policy, but severed the waiver and enforced the remaining property provisions.

Read the full Sanford v. Sanford case explanation →

Timeline

Start the conversation at least 90 days before the wedding and sign at least 30 days before.

Find a prenup attorney in South Dakota

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Frequently asked questions

How much does a prenup cost in South Dakota?
A prenuptial agreement in South Dakota typically costs $1,500 – $2,500 for a simple agreement, $2,500 – $4,000 for a moderate one, and $4,000 – $7,000 for complex estates with businesses or multi-state property. Average attorney rates in the state run $150–$250/hr. Both spouses hiring separate attorneys adds 50–75% to the total — and is strongly recommended.
Does South Dakota require a notary for a prenup?
No, South Dakota does not require notarization by statute. A prenup must be in writing and signed by both parties; notarization is a best practice for evidentiary reasons but not a legal requirement.
Do both spouses need their own attorney in South Dakota?
Independent counsel for each spouse is strongly recommended (and often outcome-determinative if litigated). Joint representation — one attorney for both spouses — is among the most common grounds for a court to invalidate a prenup later. Even where it isn't strictly required, paying one lawyer to "save money" frequently costs the entire agreement.
What statute governs prenups in South Dakota?
South Dakota prenups are governed by S.D. Codified Laws §§25-2-16 to 25-2-25. The full statute text is available on the state legislature site.

South Dakota prenup attorneys

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60-second check applying South Dakota rules.

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Sanford v. Sanford case

South Dakota Supreme Court held alimony waivers in prenups are void as against public poli…

How to get a prenup

6-step process.

What makes a prenup invalid?

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