South Dakota Alimony Calculator
Estimate spousal support and how long it lasts under SDCL § 25-4-41. Enter your numbers below for an instant estimate with a step-by-step breakdown and statute citations.
South Dakota Alimony Calculator
This state publishes a guideline equation that takes a share of the payor’s income and subtracts a share of the payee’s.
Based on SDCL § 25-4-41 · Verified June 1, 2026
South Dakota has no statutory alimony formula
South Dakota has no statutory alimony formula, so this figure uses the AAML national guideline (30% of the payor's gross income minus 20% of the payee's, capped at 40% of combined income) purely as a ballpark. The figure below is an estimate to give you a ballpark — a South Dakota judge decides the actual amount and duration using the factors listed beneath the calculator. About this method.
Enter income details to see your estimate
Eligibility: No minimum marriage length. Eligibility turns on need and the relevant factors; courts generally also consider whether the property division alone adequately provides for the requesting spouse.
Factors South Dakota Courts Weigh
- •Length/duration of the marriage
- •Earning capacity of each party (current and potential ability to earn income)
- •The financial condition of each party after the property division
- •The age, health, and physical condition of each spouse
- •The standard of living established during the marriage (social standing)
- •Each party's relative fault or responsibility in causing the breakdown of the marriage
How South Dakota Alimony Works
- •South Dakota has NO statutory formula for the amount or duration of alimony. SDCL 25-4-41 simply authorizes the court to compel 'such suitable allowance... for support during the life of that other party or for a shorter period, as the court may deem just,' leaving the award entirely to judicial discretion.
- •The factors courts weigh are case-law-derived (e.g., the long-standing line including Guindon v. Guindon and later cases), not enumerated in the statute itself. A court must first find that the property division leaves the requesting spouse unable to meet their needs.
- •South Dakota recognizes several types of support in practice: rehabilitative, restitutional (reimbursement, e.g., for putting a spouse through school), permanent, and temporary/pendente-lite support during the divorce.
- •Awards are modifiable: under SDCL 25-4-41 the court may 'from time to time modify its orders,' and modification requires a showing of a change in circumstances.
- •No recent (2023-2025) statutory reform changed the discretionary nature of South Dakota alimony; the discretionary standard under SDCL 25-4-41 remains current as of June 2026.
This is an estimate for educational purposes only, not legal advice. Alimony is highly discretionary; a South Dakota judge can order a different amount or duration. Consult a licensed South Dakota family-law attorney about your situation. See the official South Dakota resource.
How South Dakota Calculates Alimony
South Dakota addresses spousal support under SDCL § 25-4-41. It uses a guideline equation that takes a percentage of the payor's gross income and subtracts a percentage of the payee's gross income, with statutory caps. The calculator above applies that equation to your figures and shows each step.
Unlike child support, alimony is one of the most discretionary areas of family law. Even in states with a guideline equation, the figure is a starting point a judge can adjust after weighing the statutory factors, the length of the marriage, and each spouse's needs and ability to pay. Treat any number here as an informed estimate, not a guaranteed award.
Key Rules in South Dakota
- South Dakota has NO statutory formula for the amount or duration of alimony. SDCL 25-4-41 simply authorizes the court to compel 'such suitable allowance... for support during the life of that other party or for a shorter period, as the court may deem just,' leaving the award entirely to judicial discretion.
- The factors courts weigh are case-law-derived (e.g., the long-standing line including Guindon v. Guindon and later cases), not enumerated in the statute itself. A court must first find that the property division leaves the requesting spouse unable to meet their needs.
- South Dakota recognizes several types of support in practice: rehabilitative, restitutional (reimbursement, e.g., for putting a spouse through school), permanent, and temporary/pendente-lite support during the divorce.
- Awards are modifiable: under SDCL 25-4-41 the court may 'from time to time modify its orders,' and modification requires a showing of a change in circumstances.
- No recent (2023-2025) statutory reform changed the discretionary nature of South Dakota alimony; the discretionary standard under SDCL 25-4-41 remains current as of June 2026.
How Long Alimony Lasts in South Dakota
Under the AAML national guideline, duration is a share of the marriage length that rises with the length of the marriage; marriages of 20+ years may receive indefinite support. This is an illustration, not a state durational rule.
What Counts as Income
South Dakota's calculation uses each spouse’s gross income — earnings before taxes, including wages, bonuses, commissions, self-employment income, and many recurring sources. Courts can also impute income to a spouse who is voluntarily unemployed or underemployed, meaning support can be based on what a spouse could earn rather than what they currently do. Use your most recent pay stubs and tax return for the most accurate estimate.
Eligibility & Modifying an Order
No minimum marriage length. Eligibility turns on need and the relevant factors; courts generally also consider whether the property division alone adequately provides for the requesting spouse.
Alimony orders can usually be modified when there is a substantial change in circumstances — for example, a significant change in either spouse's income, the recipient's remarriage or cohabitation, retirement, or the payor's loss of employment. The specific rules and any non-modifiable agreements depend on your court order and South Dakota law.
Frequently Asked Questions
Is this South Dakota alimony calculator accurate?
It applies the South Dakota guideline from SDCL § 25-4-41 to the numbers you enter, so it gives a close estimate of a typical guideline award. It is not an official court calculation — a judge can order a different amount after weighing the statutory factors.
Is alimony taxable in South Dakota?
For divorces finalized after December 31, 2018, alimony is not deductible by the payor and is not taxable income to the recipient under federal law. Most states follow the federal treatment, but check South Dakota's current rules for state income tax.
Does cheating affect alimony in South Dakota?
It depends on the state. Some states let courts consider marital misconduct among the alimony factors, while others bar it entirely. Review SDCL § 25-4-41 and speak with a South Dakota attorney about how fault is treated where you live.
Can alimony be changed later?
Usually yes. Alimony can often be modified when there is a substantial change in circumstances — such as a large change in income, the recipient's remarriage or cohabitation, or the payor's retirement — unless your order or agreement makes it non-modifiable.
Disclaimer
This calculator provides estimates for educational purposes only and is not legal advice. Alimony is highly fact-specific and discretionary; the amount and duration a South Dakota court actually orders may differ significantly from any estimate here. For advice about your situation, consult a licensed South Dakota family-law attorney.
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