If you only remember one point about modifying child support in South Dakota, remember this: For orders entered on or after July 1, 2022, modification requires either that the order is at least three years old, or a substantial change in circumstances since entry. Older orders may be modified without showing changed circumstances. Recalculation under the state income-based schedule frames the new amount. Procedure, examples, and the opinions below hang off SDCL § 25-4-45; SDCL § 25-7-6.5 et seq.. File a petition to modify filed with the clerk of courts (referee process, then circuit court adoption). Modification operates prospectively from the petition; referees recommend orders adopted by the circuit court. The Division of Child Support reviews IV-D orders on the three-year cycle.
Step-by-step: how to file
A petition to modify filed with the clerk of courts (referee process, then circuit court adoption). The typical sequence:
- Confirm jurisdiction. South Dakota courts modify their own orders; if the child and parties have moved, the Uniform Interstate Family Support Act (UIFSA) determines which state may act. Generally the issuing state keeps exclusive continuing jurisdiction until all parties and the child have left, or the parties agree in writing to transfer.
- Gather financial proof. Two to three years of tax returns, recent pay stubs, proof of benefits or disability, health-insurance costs, and child-care invoices. Expect a financial affidavit or worksheet under SDCL § 25-4-45; SDCL § 25-7-6.5 et seq..
- File the modification request. A petition to modify filed with the clerk of courts (referee process, then circuit court adoption).
- Serve the other parent. Service starts the retroactivity clock in most states — delays cost you.
- Exchange discovery. Interrogatories, document requests, and sometimes a vocational evaluation if underemployment is disputed.
- Negotiate or litigate. Many modification cases settle at mediation or a case-management conference; a stipulated modification must still be approved and entered by the court.
- Get the new order entered. Support does not change until a judge signs — keep paying the existing order until then.
Walking through South Dakota facts
Use this walkthrough to see which South Dakota authority does the work at each step.
A parent in South Dakota lost income after the last child-support order and wants the number changed.
- File in the circuit court (referee hearings common), or the Division of Child Support using a petition to modify filed with the clerk of courts (referee process, then circuit court adoption).
- Prove the South Dakota standard: For orders entered on or after July 1, 2022, modification requires either that the order is at least three years old, or a substantial change in circumstances since entry. Older orders may be modified without showing changed circumstances. Recalculation under the state income-based schedule frames the new amount.
- Expect the effective date to follow this rule: Modification operates prospectively from the petition; referees recommend orders adopted by the circuit court.
- If the case is IV-D, also consider administrative review: The Division of Child Support reviews IV-D orders on the three-year cycle.
A South Dakota modification is a new order under SDCL § 25-4-45; SDCL § 25-7-6.5 et seq.. It is not automatic, and arrears already due generally stay due.
When the change takes effect (retroactivity)
Modification operates prospectively from the petition; referees recommend orders adopted by the circuit court.
This is the single most expensive mistake in modification practice. If circumstances changed in January but the motion is filed in June, the months in between are almost always governed by the old order. Filing promptly — even before you have perfect evidence — protects the effective date.
Periodic reviews and administrative modification
The Division of Child Support reviews IV-D orders on the three-year cycle.
Administrative review is often faster and cheaper than litigation, but its scope is narrower: agencies adjust amounts under the guidelines, while only the circuit court (referee hearings common), or the Division of Child Support can resolve disputed facts about custody, income imputation, or deviations.
Interstate cases (UIFSA)
When parents live in different states, a South Dakota order can usually be registered and enforced anywhere, but modification follows UIFSA's jurisdictional rules. Register the order in the responding state, then seek modification where the law permits it. Do not simply stop paying while a jurisdictional fight is pending — arrears keep accruing under the existing order.
Case law: how South Dakota courts decide modification motions
The opinions below are in the LawDiver corpus, with block quotes pulled from the opinion text so you can jump straight into the full decisions.
Delores v. HERNDON, Plaintiff and Appellee, v. Donald L. HERNDON, Defendant and Appellant
…ony and a reduction in child support. Appellant asserted as changed circumstances for termination of alimony and reduction in child support payments appel-lee’s employment income; appreciation of the assets awarded to appellee by the divorce decree; appellant’s reduction in income; and appellant’s health problems involving the use of his hands. Appellant has severe osteoarthrit…
On child support modification, Delores v. HERNDON, Plaintiff and Appellee, v. Donald L. HERNDON, Defendant and Appellant speaks to the South Dakota dispute in this passage: "ony and a reduction in child support. Appellant asserted as changed circumstances for termination of alimony and reduction in child support payments appel-lee’s employment income; appreciation of the assets awarded to appellee by the divorce decree; appellant’s reduction in incom" The surrounding opinion shows how the court applied that language to the record.
Sherwin G. GROSS, Plaintiff and Appellee, v. Edwin E. GROSS, Defendant and Appellant
MORGAN, Justice. This appeal arises from a modification of the child support provisions of a divorce decree. The original divorce decree, entered on January 30, 1974, in Hand County, South Dakota, gave Sherwin Gross (mother) custody of Ervin James Gross (child) and required Edwin Gross (father) to pay child support. On March 16, 1983, the same trial court modif…
South Dakota opinions such as Sherwin G. GROSS, Plaintiff and Appellee, v. Edwin E. GROSS, Defendant and Appellant are cited where child support modification is disputed. The court stated: "MORGAN, Justice. This appeal arises from a modification of the child support provisions of a divorce decree." That is the language to brief; the rest of the decision supplies the procedural posture.
Michael J. WHALEN, Appellant, v. Dianne M. WHALEN, Appellee
Michael J. WHALEN, Appellant, v. Dianne M. WHALEN, Appellee, 1992 S.D. LEXIS 123 (1992)
…t and Recommendation which dismissed Husband’s Petition for Modification of Child Support. Husband raises the following three issues: IA. Whether the extended visitation of a child support obligor’s children contemplated in the divorce decree constitutes a change in circumstances sufficient to support a modification of the child support obligation. IB. Whether a child support o…
Practitioners open Michael J. WHALEN, Appellant, v. Dianne M. WHALEN, Appellee when South Dakota child support modification turns on the distinction in this sentence: "Recommendation which dismissed Husband’s Petition for Modification of Child Support. Husband raises the following three issues: IA." Do not lift it out of the facts the court was deciding.
Carmen Colette SCHIEFFER, Plaintiff and Appellant, v. Kevin Victor — Zinter, J., concurring in part and dissenting
…Majority Opinion ¶ 40 (citing SDCL 25-7A-22 (allowing for a modification of support based on a substantial change in circumstances)). See also ¶ 44. The "change in circumstances" prerequisite for modifying support "survived the legislature's” adoption of child support guidelines in 1989. Whalen v. Whalen, 490 N.W.2d 276, 281 (S.D.1992). See also SDCL 25-7A-22. But the aging of…
Carmen Colette SCHIEFFER, Plaintiff and Appellant, v. Kevin Victor — Zinter, J., concurring in part and dissenting is worth reading on South Dakota child support modification because the court put the point in its own words: "Majority Opinion ¶ 40 (citing SDCL 25-7A-22 (allowing for a modification of support based on a substantial change in circumstances)). See also ¶ 44." Use that passage as the starting point, then read the facts that precede it.
John Mark VELLINGA, Plaintiff and Appellant. v. Delores Ann VELLINGA, Defendant and Appellee
…als the trial court’s denial of his request for retroactive modification of his child support obligation and claims the trial court erred in interpreting the terms of his obligation and in calculating arrearages. FACTS John (husband) and Delores (wife) Vellin-ga were divorced in 1981. At the divorce hearing, husband and his attorney1 offered a stipulation and agreement (stipula…
Practitioners open John Mark VELLINGA, Plaintiff and Appellant. v. Delores Ann VELLINGA, Defendant and Appellee when South Dakota child support modification turns on the distinction in this sentence: "FACTS John (husband) and Delores (wife) Vellin-ga were divorced in 1981." Do not lift it out of the facts the court was deciding.
STATE of South Dakota Ex Rel. Connie LARSGAARD, Plaintiff and Appellant, v. Romaine O. LARSGAARD, Defendant and Appellee
…ex rel Connie Larsgaard, appeals from a money judgment and modification of a divorce decree entered by the trial court on April 18,1979. Appellant contends the trial court erred in excusing Romaine 0. Larsgaard’s (appellee’s) child support arrearages and reducing future child support payments. We affirm. PACTS On June 16, 1977, Connie Larsgaard, applied for and received aid fo…
On child support modification, STATE of South Dakota Ex Rel. Connie LARSGAARD, Plaintiff and Appellant, v. Romaine O. LARSGAARD, Defendant and Appellee speaks to the South Dakota dispute in this passage: "Connie Larsgaard, appeals from a money judgment and modification of a divorce decree entered by the trial court on April 18,1979. Appellant contends the trial court erred in excusing Romaine 0." The surrounding opinion shows how the court applied that language to the record.
OFFICE OF CHILD SUPPORT ENFORCEMENT of the Department of Social Services of the State of South Dakota, on behalf of
…whether the trial court had the authority to retroactively modify defendant’s support arrearages. We recently held, however, that “the trial court [has] the power to retroactively modify appellee’s child support payments as evidenced by the discretion it is allotted under SDCL 25-4-41 and SDCL 25-4-45.” State ex rel. Larsgaard v. Larsgaard, 298 N.W.2d 381, 384 (S.D.1980). The…
South Dakota opinions such as OFFICE OF CHILD SUPPORT ENFORCEMENT of the Department of Social Services of the State of South Dakota, on behalf of are cited where child support modification is disputed. The court stated: "We recently held, however, that “the trial court [has] the power to retroactively modify appellee’s child support payments as evidenced by the discretion it is allotted under SDCL 25-4-41 and SDCL 25-4-45.” State ex rel. Larsgaard v. Larsgaard, 298 N.W.2d 381, 384 (S.D.1980)." That is the language to brief; the rest of the decision supplies the procedural posture.
Practical checklist before you file
- Re-read the existing order: does it recite a modification standard, a reservation of jurisdiction, or agreed deviation findings? Those terms shape your burden.
- Run the current South Dakota guideline calculation on today's incomes before filing; know the percentage gap.
- Assemble documents that date the change (termination letter, disability award, new lease, custody order).
- Calendar the three-year review cycle if South Dakota offers one for your case type.
- Keep paying the current order until a new one is entered — arrears are nearly impossible to erase later.
- Search LawDiver for recent South Dakota modification decisions before briefing or mediating.
Key takeaways
- South Dakota modification actions are filed in the circuit court (referee hearings common), or the Division of Child Support.
- The legal standard: For orders entered on or after July 1, 2022, modification requires either that the order is at least three years old, or a substantial change in circumstances since entry.
- Modification operates prospectively from the petition; referees recommend orders adopted by the circuit court.
- The Division of Child Support reviews IV-D orders on the three-year cycle.
- A modification is never automatic — even when a percentage threshold is met, the court must enter a new order.
- Companion reading: South Dakota child support guidelines and how to modify alimony in South Dakota.
The legal standard in South Dakota
For orders entered on or after July 1, 2022, modification requires either that the order is at least three years old, or a substantial change in circumstances since entry. Older orders may be modified without showing changed circumstances. Recalculation under the state income-based schedule frames the new amount.
In practice, the moving parent carries the burden. The court compares the facts as they stood when the last order was entered against the facts today, and asks whether the difference is significant enough — and durable enough — to justify a new order. Judges distinguish between temporary setbacks (a few weeks of reduced hours) and genuine, continuing changes (a layoff, a new custody schedule, a child's changed medical needs).
What counts as a change in South Dakota
Facts that most often support modification:
- Income changes. Job loss, demotion, retirement, disability, or a significant raise on either side. Voluntary quits and deliberate underemployment usually backfire — courts may impute income.
- Parenting-time shifts. A new custody order, a child moving households, or substantial unexercised visitation.
- The child's needs. New medical or educational expenses, health-insurance changes, or a child reaching an age that changes the guideline bracket.
- Guideline updates. In many states, a recalculated guideline amount that differs from the current order by the statutory margin is itself the change — SDCL § 25-4-45; SDCL § 25-7-6.5 et seq. controls how that math works here.
- Incarceration, military deployment, or other statutory events that South Dakota treats as qualifying changes.
Facts that rarely work: a short gap between jobs, a new partner's income (usually not imputed to a parent), lifestyle choices, or the passage of time alone where South Dakota still requires a showing.
Frequently asked questions
Can child support be modified in South Dakota?
Yes. For orders entered on or after July 1, 2022, modification requires either that the order is at least three years old, or a substantial change in circumstances since entry. Older orders may be modified without showing changed circumstances. Recalculation under the state income-based schedule frames the new amount. Modifications are handled through a petition to modify filed with the clerk of courts (referee process, then circuit court adoption).
How much does income have to change to modify child support in South Dakota?
For orders entered on or after July 1, 2022, modification requires either that the order is at least three years old, or a substantial change in circumstances since entry. Older orders may be modified without showing changed circumstances. Recalculation under the state income-based schedule frames the new amount. Some changes — custody shifts, medical needs, or statutory events — qualify even without hitting a numeric threshold.
Can South Dakota child support be modified retroactively?
Modification operates prospectively from the petition; referees recommend orders adopted by the circuit court. Plan on the current order controlling until a new one is entered.
Who can request a modification?
Either parent, and in IV-D cases the state child support agency on a parent's behalf. The Division of Child Support reviews IV-D orders on the three-year cycle.
Do I need a lawyer to modify child support in South Dakota?
Not always — the circuit court (referee hearings common), or the Division of Child Support accepts filings from self-represented parents, and administrative reviews are designed for that. Contested income imputation, self-employment income, or interstate jurisdiction issues are where counsel matters most.
Does the other parent's refusal to follow the visitation order change support?
Not automatically. Custody interference and support are legally distinct issues in South Dakota; withholding support in response to withheld visitation typically creates arrears and contempt exposure. Seek modification or enforcement of the parenting order through the court instead.
Related guides
- How South Dakota calculates child support
- South Dakota alimony / alimony guide
- How to modify alimony in South Dakota
- How to modify child support in South Dakota
Disclaimer
This guide is general legal information about modifying child support in South Dakota, not legal advice. Statutes, guidelines, and case law change. Confirm the current text of SDCL § 25-4-45; SDCL § 25-7-6.5 et seq. and consult a licensed South Dakota family-law attorney about your specific order.