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South Dakota Spousal Support Calculator
South Dakota Spousal Support Calculator
Calculate Maintenance Under South Dakota Codified Laws SDCL 25-4-41 — Updated 2026
Use this free South Dakota spousal support calculator to estimate how much maintenance you may pay or receive under South Dakota Codified Laws SDCL 25-4-41. Whether your divorce is filed in Minnehaha County (Sioux Falls), Pennington County (Rapid City), Lincoln County, Brown County (Aberdeen), or any other South Dakota county, this tool applies the relevant statutory factors alongside county cost-of-living adjustments. South Dakota recognizes Temporary, Rehabilitative, Transitional, and Restitutional maintenance — with no mandatory statutory formula. This calculator incorporates the most recent case law including Moen v. Moen (2026) and Peery v. Peery (2025). Always consult a licensed South Dakota family law attorney for advice specific to your case.
Income Information
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Marriage Details
Enter a value between 0–100 years
Please enter a valid past date
Marriage less than 5 years? ℹ️South Dakota treats marriages under 5 years as short-term. Transitional maintenance is typically 1–2 years.
Marriage 20+ years? ℹ️South Dakota uses 20+ years as the long-term threshold. Longer marriages may support extended maintenance; permanent maintenance is rare and reserved for disability or advanced age.
Is recipient custodial parent? ℹ️SD courts may award higher maintenance when the recipient has primary physical custody of minor children, due to reduced earning capacity.
South Dakota-Specific Factors
Domestic violence involved? ℹ️SD courts may increase maintenance amounts and duration when domestic violence is documented under SDCL 25-4-41.
South Dakota Domestic Violence Impact (SDCL 25-4-41):
10–20% increase in maintenance amounts typically awarded
May qualify for longer duration regardless of marriage length
Court may order additional rehabilitation or counseling costs
Fault-based divorce? ℹ️South Dakota fault grounds include adultery, extreme cruelty, and willful desertion. Fault may affect maintenance amount and duration per Hill v. Hill (2009).
South Dakota Fault Considerations (SDCL 25-4-41; Hill v. Hill, 2009):
Adultery: May bar or reduce maintenance for at-fault spouse
Extreme cruelty: May increase maintenance for victim spouse
Willful desertion: Considered as a factor in award
Fault is one factor among many; courts weigh impact on economic circumstances
Needs & Resources
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Enter age 18–100
Earning Capacity
Enter 0–50 years
Recipient sacrificed career for marriage? ℹ️Check if recipient gave up career advancement opportunities to support the marriage (relocated, stayed home with children). Recognized factor under SDCL 25-4-41.
Recipient has a disability? ℹ️A documented disability limiting earning capacity may support longer or higher maintenance. Permanent maintenance in SD is largely reserved for disability or advanced age.
Duration Factors
Maintain marital standard of living? ℹ️SD courts may consider maintaining the marital lifestyle when determining duration, especially in long-term marriages (20+ years).
Enter age 18–100
Enter 0–50 years
Important Legal Note: South Dakota does not have a statutory alimony formula. Judges have broad discretion under SDCL 25-4-41 (confirmed in Hanson v. Hanson, 2018). This calculator provides estimates only based on common judicial patterns and recent case law. Moen v. Moen (2026) reaffirms that need is the foundational requirement. Consult a licensed South Dakota family law attorney for advice specific to your case.
South Dakota Spousal Maintenance Calculation Results
Maintenance Type Determination
Recommended Maintenance Type:
Monthly Maintenance Amount
Guideline Amount:
Statutory Considerations:
Duration of Maintenance
Recommended Duration:
SD Guidelines:
Judicial Considerations
Likely Range:
Key Factors:
Disclaimer: Estimates only. South Dakota has no mandatory maintenance formula; judges use broad discretion under SDCL 25-4-41. Not legal advice. Consult a licensed SD family law attorney.
South Dakota Maintenance Case Law
Need Is the Foundational Requirement
Moen v. Moen, SD Supreme Court Case No. 31123 (2026)
In this 2026 decision, the South Dakota Supreme Court affirmed the denial of spousal support where the recipient had sufficient assets and income from property division and employment to meet needs independently. The court reiterated that need is the foundational requirement under SDCL 25-4-41 and maintenance is not a punitive tool against the payor.
Modifications Are Prospective Only
Peery v. Peery, SD Supreme Court Case No. 30909 (2025)
The Supreme Court affirmed reduction of husband’s maintenance from $13,500 to $6,000 per month after a substantial, good-faith decrease in income. The court denied retroactive modification, reinforcing that modifications are prospective only and require proof of a substantial change in circumstances under SDCL 25-4-41.
Broad Judicial Discretion — No Rigid Formula
Hanson v. Hanson, SD Supreme Court Case No. 28356 (2018)
Established that South Dakota courts have broad discretion in determining spousal support amounts and duration. The court explicitly rejected rigid formulas, emphasizing a holistic review of all statutory factors under SDCL 25-4-41.
Earning Capacity & Lost Opportunities as Factors
Hill v. Hill, SD Supreme Court (2009)
Established the key factors South Dakota courts must weigh: marriage length, earning capacity, age, health, financial condition post-divorce, marital standard of living, fault, contributions to the other spouse’s education or career, and lost career opportunities due to the marriage.
Modifying Maintenance in South Dakota
Under SDCL 25-4-41 and the South Dakota Supreme Court’s ruling in Peery v. Peery (2025), maintenance can be modified upon a showing of a substantial and continuing change in circumstances. Modifications are prospective only — courts will not retroactively adjust past-due amounts.
1. Grounds for Modification
Substantial Income Change: A significant, ongoing decrease or increase in either party’s income not caused by voluntary action (confirmed in Peery v. Peery, 2025).
Remarriage of Recipient: Typically terminates periodic maintenance by operation of law.
Cohabitation: Payor must demonstrate that cohabitation has materially reduced recipient’s financial needs.
Retirement: Payor’s retirement at a reasonable age (typically 65+) may support modification. Early retirement is scrutinized for voluntariness.
Disability or Health Issues: New or worsening medical condition affecting earning capacity of either party.
Recipient’s Changed Circumstances: Significant improvement in recipient’s income or financial position (per Moen v. Moen, 2026).
2. Step-by-Step Modification Process
Step 1 – Document the Change: Gather clear evidence of the substantial change: pay stubs, tax returns, medical records, retirement notices, termination letters.
Step 2 – File a Petition: Submit a Petition for Modification to the circuit court that issued the original order, along with a supporting affidavit.
Step 3 – Serve Notice: Legally notify the other party via certified mail or a process server.
Step 4 – Mediation (where available): Some SD courts encourage mediation before a contested hearing.
Step 5 – Court Hearing: Present evidence to the judge. The burden of proof is on the party seeking modification.
Step 6 – Order on Modification: Effective from the filing date only — no retroactive reduction per Peery v. Peery (2025).
3. Critical Practical Considerations
Never stop paying without a court order: Stopping payments without judicial approval can result in contempt of court and accumulation of arrearages.
File promptly: Since modifications are only prospective, delay costs money — the effective date is the filing date, not when circumstances changed.
No state income tax: South Dakota has no state income tax, which affects how net-income-based negotiation estimates translate in practice.
SDCL 25-4-41 | Peery v. Peery, Case No. 30909 (2025) | Moen v. Moen, Case No. 31123 (2026)
South Dakota Spousal Maintenance FAQs (Updated 2026)
Is there a formula for calculating alimony in South Dakota?
No. South Dakota does not have a mandated statutory formula. Judges have broad discretion under SDCL 25-4-41, as confirmed in Hanson v. Hanson (2018). Courts focus on the recipient’s financial need and the payor’s ability to pay.
A common negotiation baseline used by practitioners: (30% of payor’s gross income) − (40% of recipient’s gross income). For temporary support, some attorneys use: (40% of higher earner’s net income) − (50% of lower earner’s net income). Neither is binding on courts.
South Dakota Codified Laws SDCL 25-4-41; Hanson v. Hanson (2018)
What factors do South Dakota courts consider for maintenance?
Under SDCL 25-4-41 and as articulated in Hill v. Hill (2009) and Moen v. Moen (2026):
Contributions to the other spouse’s education or career advancement
Lost career opportunities due to the marriage
Health and disability status
Recipient’s need — foundational requirement per Moen v. Moen (2026)
SDCL 25-4-41; Hill v. Hill (2009); Moen v. Moen (2026)
What are the types of alimony in South Dakota?
Temporary (Pendente Lite): Paid during divorce proceedings; ends when the divorce is finalized.
Rehabilitative: Short-term support for education or job training; ends when the plan is completed.
Transitional: Short-term bridge support to help the recipient become self-supporting.
Restitutional: Reimbursement for contributions made to the other spouse’s education, career, or earning capacity during the marriage.
Permanent: Rare in South Dakota; reserved for disability, advanced age, or very long marriages where self-sufficiency is not achievable.
SDCL 25-4-41
Can alimony be modified in South Dakota?
Yes. Modification requires a substantial and continuing change in circumstances, such as:
Significant involuntary income loss or gain
Remarriage or cohabitation of the recipient
Retirement of the payor at a reasonable age
Serious disability affecting earning capacity
Significant improvement in recipient’s financial condition (per Moen v. Moen, 2026)
Critical: Per Peery v. Peery (2025), modifications are prospective only. Courts will not retroactively reduce past-due amounts. File promptly when circumstances change.
SDCL 25-4-41; Peery v. Peery (2025)
Are maintenance payments taxable in South Dakota?
Federal Tax (Current Law): For divorce or separation agreements executed after December 31, 2018, maintenance payments are not deductible for the payor and not taxable income for the recipient under federal law (Tax Cuts and Jobs Act, 2017).
South Dakota State Tax: South Dakota has no state income tax, so there is no state-level tax impact on maintenance payments for either party.
Pre-2019 agreements may have different federal tax treatment. Consult a tax professional for guidance specific to your situation.
IRC §71; Tax Cuts and Jobs Act of 2017
What is a common temporary support estimate used in South Dakota?
A common negotiation rule of thumb used by South Dakota attorneys for temporary (pendente lite) support:
(40% of higher earner’s net monthly income) − (50% of lower earner’s net monthly income)
Example: Payor net income $6,900/mo and recipient net income $2,600/mo: ($6,900 × 0.40) − ($2,600 × 0.50) = $2,760 − $1,300 = $1,460/month.
This estimate is not binding on courts. Judges retain full discretion under SDCL 25-4-41.