South Dakota Alimony Laws: How Spousal Support Works (2026)

South Dakota awards alimony under SDCL 25-4-41, which gives courts broad discretion to order one spouse to make a suitable allowance for the support of the other. There is no formula. A judge weighs six case-law factors drawn from decades of South Dakota Supreme Court precedent, considers fault in the breakdown of the marriage, and sets both the amount and the duration based on the circumstances of the particular case.

Information last verified on June 1, 2026.

Estimate your situation: Try our free South Dakota alimony calculator to estimate spousal support and see the factors a South Dakota court weighs.

What Is Alimony in South Dakota?

Alimony in South Dakota is a court-ordered payment from one former spouse to the other after a divorce is granted. The purpose is to prevent a situation where one spouse is left without reasonable financial support while the other is comfortable. South Dakota courts also use the term spousal support, and the two phrases mean the same thing under state law.

The legal foundation is SDCL 25-4-41. The statute reads, in relevant part, that where a divorce is granted the court may compel one party to make "such suitable allowance to the other party for support during the life of that other party or for a shorter period, as the court may deem just, having regard to the circumstances of the parties represented." The statute also expressly grants the court the power to modify its orders from time to time.

Several things stand out in that language. First, the court "may" award alimony. It is never automatic, and many divorces in South Dakota end with no alimony order at all. Second, the phrase "as the court may deem just" signals that the judge has wide latitude. No worksheet, no formula, and no presumptive duration range appears in the statute. Third, the statute already contemplates modification as part of its original grant of authority, so post-divorce changes are built into the framework.

Alimony is separate from the division of marital property. A judge who awards a larger share of the marital estate to one spouse may offset that award against any alimony obligation, or may decline to award alimony altogether because the property division is sufficient. The two issues overlap and courts address them together, but they remain legally distinct.

Types of Alimony Recognized in South Dakota

South Dakota does not define distinct alimony categories in SDCL 25-4-41. The statute simply authorizes a "suitable allowance." Through case law and practice, however, South Dakota courts and practitioners recognize four functional types of alimony. Understanding the purpose each type is meant to serve helps predict how a court is likely to frame an award.

Permanent alimony (sometimes called traditional alimony) is an ongoing periodic payment with no predetermined end date, ordinarily running until the recipient dies or remarries. It is appropriate when a long marriage has left one spouse unable to become financially self-sufficient, for example after a marriage of many decades in which one spouse did not work outside the home and cannot reasonably be expected to do so now. Permanent alimony is less common today than in prior decades, but it remains available in South Dakota for the right circumstances.

Rehabilitative alimony is the most commonly awarded type in modern South Dakota practice. Its goal is to support a spouse for a defined period while that spouse completes education, vocational training, or job-skill development needed to re-enter or advance in the workforce. The duration is tied to how long that process is expected to take. Once the recipient has had a fair opportunity to become self-supporting, the obligation ends.

Reimbursement alimony is awarded to compensate a spouse who made significant financial sacrifices or direct contributions to support the other spouse's education or career advancement during the marriage. The classic example is a spouse who worked to put the other through professional school. Reimbursement alimony addresses the inequity that would result if the supporting spouse received none of the financial benefit of that investment after divorce.

Restitutional alimony is the least common category and is conceptually similar to reimbursement alimony. It focuses on restoring value that one spouse provided to the marital enterprise, such as substantial unpaid labor in a family business, when that contribution would otherwise go unrecognized in the property division. It is an equitable remedy rather than ongoing support.

A court may combine elements of more than one type, or may award a lump sum rather than periodic payments, depending on what the facts call for. Any award remains subject to the modification authority in SDCL 25-4-41.

How South Dakota Courts Decide Alimony: The Six Factors

Because the statute provides no formula, the amount and duration of an alimony award are determined by applying six factors established through South Dakota Supreme Court decisions, often referenced in the case law as the criteria set out in Guindon v. Guindon and consistently applied in subsequent decisions including Vandyke v. Choi, 2016 S.D. 91. These six factors are:

1. The length of the marriage. Longer marriages typically support larger or longer awards. A marriage of two years stands in a very different position than a marriage of twenty-five years.

2. The respective earning capacity of the parties. This factor looks forward, not just at current wages. It asks what each spouse is capable of earning given education, work history, skills, and the realistic employment market. A large gap in earning potential is one of the strongest drivers of an alimony award.

3. The respective financial condition of the parties after the property division. What each spouse actually walks away with from the marital estate matters. A spouse who receives substantial liquid assets may be better positioned to support herself or himself without alimony than a spouse who receives only non-liquid property.

4. The respective ages, health, and physical condition of the parties. A young, healthy spouse has more time to develop earning capacity. An older spouse or a spouse with a disabling condition may have limited options. Health care costs and the impact of age on employability are part of this analysis.

5. The station in life or social standing of the parties during the marriage. Courts consider the standard of living the couple maintained. The goal is not to guarantee that the lower-earning spouse maintains that exact lifestyle indefinitely, but the marital standard is relevant context for what "suitable" support means.

6. The relative fault in the termination of the marriage. South Dakota permits a judge to consider which spouse bears greater responsibility for the breakdown of the marriage. Adultery, abuse, abandonment, or other misconduct can increase or decrease an alimony award. Not all jurisdictions allow this; South Dakota is among those that do.

No single factor controls the result. The trial court weighs all six together against the full factual record. A court is vested with wide discretion, and an appellate court will not disturb the decision unless the trial court clearly abused that discretion.

Fault is worth emphasizing separately. Many states have moved toward no-fault divorce frameworks that exclude misconduct from alimony calculations. South Dakota has not. A spouse who committed serious misconduct during the marriage may receive a reduced award, or in an appropriate case no award at all. Conversely, a spouse who was the victim of serious misconduct may receive a more generous award than the financial factors alone would suggest. Where misconduct is in play, get a free case evaluation from a South Dakota family lawyer on putting the fault evidence before the judge (attorney advertising).

When Alimony Ends or Changes

Death. SDCL 25-4-41 authorizes an allowance for support "during the life of that other party," meaning the recipient, so an alimony award cannot run past the recipient's death. The statute says nothing about the death of the paying spouse. As a general rule the obligation ends when the payer dies, but that is not automatic. A settlement agreement or a decree can bind the payer's estate, and in consolidated divorce and probate appeals, the South Dakota Supreme Court affirmed an order continuing a deceased payer's alimony obligation, reduced from $300 to $270 a month, over his co-executors' request to eliminate it, where the obligation rested on a settlement agreement incorporated into the divorce decree (Lodde v. Lodde, 420 N.W.2d 20 (S.D. 1988)). A surviving recipient should not assume an estate claim is foreclosed. Read the decree and any settlement agreement, and raise the question in the probate case.

Remarriage. South Dakota case law treats the remarriage of the recipient spouse as grounds to terminate an alimony award. When the recipient enters a new marriage, the legal basis for continuing support from the former spouse is generally eliminated. Parties may address this and other termination events in a settlement agreement, and the terms of that agreement will govern to the extent the court approves them.

Material change in circumstances. Under the modification authority built into SDCL 25-4-41, either party may return to court and ask the judge to adjust the amount or duration of an existing alimony order when a substantial change in circumstances has occurred since the original order. Common grounds include a significant increase or decrease in either party's income, job loss, disability, retirement, or a substantial change in expenses. A court will not modify an order to account for a change that was foreseeable and already considered at the time of the divorce. The party seeking modification bears the burden of showing the change is real, substantial, and not self-induced.

Lump sum awards. If the court orders alimony as a single lump sum rather than periodic payments, modification after payment is generally not available because the obligation has already been fully satisfied.

Alimony Tax Rules and How It Differs From Child Support

Federal tax treatment of alimony depends entirely on when the divorce or separation agreement was signed.

For agreements executed after December 31, 2018, the Tax Cuts and Jobs Act changed the rules. The paying spouse cannot deduct alimony payments from federal taxable income, and the receiving spouse does not include the payments as gross income. This applies to all new agreements and to pre-2019 agreements that are modified after 2018 if the modification document expressly states that the post-2018 rules apply. IRS Topic No. 452 covers these rules in detail.

For agreements executed on or before December 31, 2018, the prior rules remain in effect: the paying spouse deducted alimony, and the recipient included it as taxable income.

Child support is an entirely different obligation, governed by different statutes and serving a different purpose. In South Dakota, child support is calculated under SDCL chapter 25-7 using the Income Shares model, which produces a guideline amount based on the parents' combined income and the custody arrangement. Child support is never deductible by the paying parent and is never taxable to the receiving parent, under any version of the law, for any date of agreement. The two obligations do not offset each other; a court may order both.

For more on how South Dakota calculates child support, see South Dakota child support laws.

For a state-by-state overview of spousal support rules, see Alimony laws by state.

Disclaimer: This page provides general legal information about South Dakota alimony law and is not legal advice. Alimony cases depend on the specific facts of each divorce, and individual outcomes vary substantially. If you are going through a divorce or separation in South Dakota, consult a licensed South Dakota family law attorney for advice tailored to your situation.

Last updated: June 1, 2026.

More South Dakota Laws

• South Dakota Child Custody Laws
• South Dakota Child Support Laws
• South Dakota Common Law Marriage Laws
• South Dakota Divorce Laws

Frequently Asked Questions

Does South Dakota use the word alimony or spousal support?

South Dakota law uses the phrase 'allowance for support' in SDCL 25-4-41, but courts and practitioners commonly use alimony and spousal support interchangeably. All three phrases refer to the same court-ordered payment from one former spouse to the other after divorce.

Is there a formula for calculating alimony in South Dakota?

No. South Dakota has no statutory formula or worksheet for alimony. SDCL 25-4-41 gives the court broad discretion to award whatever amount and duration the judge considers just. The court applies six case-law factors covering marriage length, earning capacity, financial condition after property division, age and health, station in life, and relative fault.

Can a spouse's fault end or reduce alimony in South Dakota?

Yes. Relative fault in the termination of the marriage is one of the six factors South Dakota courts must weigh when deciding alimony. A spouse who committed adultery, abuse, or other serious misconduct may receive a reduced award or no award at all, depending on the full circumstances. South Dakota is among the minority of states that still permits fault to affect alimony.

How long does alimony last in South Dakota?

Duration is set by the trial court based on the six case-law factors and the purpose of the award. Rehabilitative alimony typically runs for the period needed to complete education or training. Permanent alimony has no preset end date and ordinarily runs until the recipient dies or remarries; whether it continues after the paying spouse dies depends on the decree and any settlement agreement. There is no statutory duration range or guideline.

Does alimony end when the recipient remarries in South Dakota?

Under South Dakota case law, remarriage of the recipient spouse is grounds to terminate alimony. The parties may address this in their settlement agreement and include additional termination events. The terms of an approved settlement agreement will govern the specific conditions of termination.

Can alimony be modified after the divorce in South Dakota?

Yes. SDCL 25-4-41 expressly authorizes the court to modify its alimony orders from time to time. Either party may petition for modification by showing a substantial and material change in circumstances since the original order was entered, such as a major change in income, disability, or retirement. Courts will not modify for changes that were foreseeable at the time of the original divorce.

Is alimony taxable income in South Dakota?

Federal tax treatment controls. For divorce agreements signed after December 31, 2018, alimony is not deductible by the paying spouse and is not taxable income for the recipient, under the Tax Cuts and Jobs Act. For agreements signed on or before December 31, 2018, the old rules apply: the payer deducted payments and the recipient reported them as income. South Dakota has no separate state income tax on alimony.