South Dakota allows parents to modify child support orders when circumstances change significantly or when three years have passed since the original order under SDCL § 25-7A-22. The filing fee for child support modification in South Dakota is $50, and the typical timeline from petition to hearing is approximately 30 days. For orders entered after July 1, 2022, you must demonstrate either a substantial change in circumstances (typically a 20% difference in the calculated support amount) or wait until three years have passed since the current order was entered.
Author: Antonio G. Jimenez, Esq. | Florida Bar No. 21022 | Covering South Dakota divorce law
Key Facts: South Dakota Child Support Modification
| Factor | Details |
|---|---|
| Filing Fee | $50 (as of January 2026) |
| Court | Circuit Court |
| Processing Center | Division of Child Support, Pierre, SD |
| Typical Timeline | 30-60 days from filing to hearing |
| Change Threshold | 20% difference in calculated support |
| Pre-July 2022 Orders | No change in circumstances required |
| Post-July 2022 Orders | 3 years elapsed OR substantial change required |
| Modification Effective Date | Date of petition filing (not retroactive) |
| Support Calculation | Income Shares Model under SDCL § 25-7-6.2 |
Understanding Child Support Modification in South Dakota
Child support modification in South Dakota requires filing a petition with the Division of Child Support in Pierre or directly with the Circuit Court in the county where the original order was entered. Under SDCL § 25-7-6.13, all orders entered before July 1, 2022, may be modified without requiring proof of changed circumstances. Orders entered after July 1, 2022, require either three years to have passed or a substantial change in circumstances producing at least a 20% difference in the calculated support amount under SDCL § 25-7A-22. The South Dakota Circuit Court is the only entity authorized to modify child support obligations, making proper filing procedures essential for any parent seeking to increase or decrease child support payments.
South Dakota uses the Income Shares Model under SDCL § 25-7-6.2 to calculate child support based on both parents' combined monthly net incomes. The 2026 guidelines schedule covers combined monthly net incomes from $1,200 to $20,000, with base support for one child ranging from $254 at $1,200 combined income to $1,822 at $20,000 combined income. When parents request a modification, the court recalculates support using current income figures and compares the result to the existing order to determine whether the 20% threshold has been met.
Who Can File for Child Support Modification
Either parent may file a petition to modify a child support order in South Dakota, and the law also permits legal representatives such as grandparents, aunts, uncles, or any person with legal custody of the child to initiate modification proceedings. The petitioner must have standing, meaning they must be directly affected by the child support order or have legal responsibility for the child's care. Recipients of public assistance benefits under SDCL Title 28 are exempt from the $50 filing fee, making the modification process more accessible for low-income families seeking to change child support amounts.
The petitioner bears the burden of proving that modification is warranted, whether by demonstrating a substantial change in circumstances for post-July 2022 orders or simply providing current financial information for pre-July 2022 orders. Both parents must participate in the modification hearing, with the petitioner required to appear either in person or by telephone; failure to appear may result in the referee dismissing the modification request without prejudice.
Grounds for Modifying Child Support in South Dakota
South Dakota courts recognize several grounds that constitute a substantial change in circumstances warranting child support modification. Job loss or significant income reduction represents the most common basis for seeking to reduce child support, requiring documentation such as termination letters, unemployment benefit statements, or pay stubs showing decreased earnings. A parent who voluntarily quits employment or takes a lower-paying job without good cause may face imputed income calculations based on their earning capacity rather than actual income.
Other qualifying changes include disability that prevents the obligor from working, incarceration of the paying parent, medical emergencies affecting either parent or the child, and changes in custody arrangements that alter the parenting time distribution. The emancipation of one child when multiple children are covered by the order also justifies modification, as the support calculation changes when fewer children require financial support. Courts also consider increased income of either parent as grounds to increase child support payments, particularly when the custodial parent can demonstrate that additional funds would benefit the child's education, healthcare, or general welfare.
The Child Support Modification Process Step by Step
The South Dakota child support modification process begins with gathering required documentation and completing the Petition for Modification of Child Support form. The petition must be accompanied by a financial statement, verification of income (such as recent pay stubs, tax returns, or W-2 forms), the Child Support Order Filing Data form UJS/DSS 089, and a copy of the most recent court order establishing support. All documents must be submitted on 8.5 x 11 inch white paper; petitions on colored or different-sized paper will be returned without processing.
Once assembled, the complete petition package should be sent to: Division of Child Support, Attn: Modification Unit, 700 Governors Drive, Pierre, SD 57501. The $50 filing fee must be paid to the Clerk of Courts before the Circuit Court Judge will appoint a referee to hear the case. After the Division reviews the paperwork, the forms are forwarded to the Clerk of Courts in the county where the original support order was entered. A court-appointed referee then schedules a hearing, typically within 30 days of filing, and sends notice to both parties by mail.
Required Documents for Filing
South Dakota requires specific documentation to process a child support modification petition, and missing documents will delay your case. The core requirements include the completed Petition for Modification of Child Support, a detailed financial statement listing all income sources and expenses, and verification of current income through recent pay stubs covering at least the past three months. Parents must also submit copies of their most recent federal tax return with all schedules and W-2 forms, providing the court with a comprehensive picture of annual earnings.
Additional required documents include the Child Support Order Filing Data form UJS/DSS 089, which captures essential case information, and a complete copy of the most recent South Dakota court order or decree establishing child support. If the modification request involves changes in custody or parenting time, parents should include any relevant court orders documenting those changes. Self-employed parents must provide additional documentation such as profit and loss statements, business tax returns, and bank statements demonstrating actual income received from business operations.
Understanding the 20% Change Threshold
South Dakota courts use a 20% threshold to determine whether a change in circumstances is substantial enough to warrant child support modification under SDCL § 25-7-6.9. This means that when the court recalculates support using current income figures, the new amount must differ from the existing order by at least 20% to qualify as a substantial change. For example, if your current child support order is $500 per month, the recalculated amount must be at least $600 (a $100 increase) or no more than $400 (a $100 decrease) to meet the threshold.
The 20% calculation applies to the total support obligation, not to individual income changes. A parent whose income increases by 30% may not necessarily see a 20% change in the calculated support amount, as the guidelines consider both parents' incomes proportionally. Courts apply this threshold strictly, and modifications falling below the 20% mark are typically denied unless extraordinary circumstances exist. The threshold serves to prevent minor fluctuations in income from triggering constant modification requests while still allowing meaningful changes to be addressed.
Timeline and What to Expect at the Hearing
The typical timeline for child support modification in South Dakota runs approximately 30 to 60 days from the date the petition is filed until the referee issues a recommended order. After the Division of Child Support reviews your petition and forwards it to the appropriate county court, the court-appointed referee sends hearing notices to both parties by mail. The notice specifies the date, time, and location of the hearing, along with instructions for the respondent to submit their own financial documentation before the hearing date.
At the modification hearing, both parties present evidence regarding their current financial circumstances, including income, expenses, and any factors that may justify deviation from the guidelines. The petitioner explains why modification is warranted, citing specific changes in circumstances if the order was entered after July 1, 2022. The referee reviews all financial documents, applies the child support guidelines under SDCL § 25-7-6.2, and prepares a report with a recommended support amount. Both parties receive copies of the referee's report and recommended order, typically within 60 days from the hearing date, and have an opportunity to object before the Circuit Court Judge enters the final order.
Calculating the New Support Amount
South Dakota calculates child support using the Income Shares Model, which determines support based on the combined monthly net income of both parents and divides the obligation proportionally according to each parent's share of that combined income. Monthly net income is calculated under SDCL § 25-7-6.3 by subtracting allowable deductions from gross income, including federal income taxes, FICA taxes (Social Security and Medicare), mandatory retirement contributions, and existing court-ordered support for other children from previous relationships.
The 2026 guidelines schedule provides specific support amounts based on combined parental income and number of children. For combined monthly net incomes of $5,000, the base support obligation for one child is approximately $750, while support for two children is approximately $1,100. The noncustodial parent's share is calculated by dividing their individual net income by the combined total; if the noncustodial parent earns 60% of the combined income, they would owe 60% of the base support obligation. Parents can use the South Dakota Child Support Calculator available through the Division of Child Support to estimate their potential new support amount before filing for modification.
Deviation from Guidelines
South Dakota courts may deviate from the calculated guideline amount when strict application would be unjust or inappropriate, but such deviations require specific written findings explaining the reasoning. Under SDCL § 25-7-6.2, the guidelines create a rebuttable presumption that the calculated amount is correct, placing the burden on the party requesting deviation to prove why an alternative amount is more appropriate. Data indicates that courts exercise deviation authority sparingly, with deviations occurring in fewer than 15% of South Dakota child support cases.
Factors that may justify deviation include extraordinary medical expenses for the child, educational costs beyond normal expectations, the child's special needs or disabilities, parenting time arrangements that significantly exceed standard visitation (typically more than 180 overnights per year), and income levels that fall above the guidelines schedule maximum of $20,000 combined monthly income. Senate Bill 162, introduced in January 2026, proposes revisions to the factors courts may consider when deviating from the child support obligation schedule, reflecting ongoing legislative attention to ensuring the guidelines remain fair and current.
When Child Support Ends in South Dakota
Under SDCL § 25-5-18.1, child support in South Dakota terminates when the child reaches age 18, or age 19 if the child is still a full-time student in a secondary school (high school), whichever occurs first. Support obligations also end early if the child marries, enlists in the military, or becomes legally emancipated through court order. When a child covered by a multi-child support order emancipates, the support obligation for remaining children does not automatically adjust; the parent must file a modification petition to recalculate support based on the reduced number of children.
South Dakota courts may extend support past age 19 if a child is physically or mentally disabled and unable to support themselves, with such extensions determined on a case-by-case basis. Importantly, South Dakota law does not require parents to pay for college expenses unless such payments are specifically written into a marital settlement agreement; courts cannot impose college support obligations without parental consent. Parents anticipating a child's emancipation should file for modification several months before the child's 18th birthday to ensure the new order takes effect promptly.
Retroactivity and Effective Dates
Child support modifications in South Dakota are not retroactive beyond the date the modification petition was filed under SDCL § 25-7A-22. This means if you experience a significant income reduction in January but do not file your modification petition until April, the new support amount will only apply from April forward; you remain responsible for the original support amount for January through March. This rule makes prompt filing essential when circumstances change, as delays directly impact the financial outcome.
The modification effective date has important implications for parents facing financial hardship. If you lose your job or experience a substantial income reduction, filing your modification petition immediately protects you from accumulating arrearages at the higher rate while your case is pending. Courts cannot reduce child support obligations for periods before the petition was filed, regardless of how compelling the circumstances may be. Parents who wait to file in hopes that circumstances will improve risk owing thousands of dollars in back support that cannot be forgiven or modified after the fact.
2026 Legislative Updates
The South Dakota Commission on Child Support submitted recommendations to Governor Larry Rhoden and the legislature in December 2025 for consideration during the 2026 legislative session. Key proposals include increasing the Self-Support Reserve from $871 to $1,148, which would affect low-income obligors' ability to retain sufficient income for basic needs while meeting support obligations. The Commission also evaluated updates to the core child support guidelines schedule, which determines base obligations based on combined parental income and number of children.
Senate Bill 162, introduced on January 29, 2026, proposes revisions to the factors courts may consider when deviating from the child support obligation schedule. As of February 2026, the bill remains pending in the Senate Judiciary Committee. Parents with active child support cases should monitor these legislative developments, as changes to the guidelines or deviation factors could affect both existing orders and pending modification requests. The Division of Child Support website at dss.sd.gov/childsupport provides updates on any changes to guidelines or procedures.
Filing Through the Division vs. Directly with the Court
Parents in South Dakota have two options for filing child support modification petitions: through the Division of Child Support (DCS) Modification Unit in Pierre or directly with the Circuit Court in the county where the original order was entered. Filing through the DCS is generally simpler and provides administrative support throughout the process, with staff available to answer questions and ensure paperwork is complete. The DCS route is required for IV-D cases (cases involving public assistance or where the state has an interest in support collection).
Filing directly with the court may be faster in some circumstances, particularly for private cases without state involvement. Direct filing requires greater familiarity with court procedures and deadlines, and the petitioner bears full responsibility for ensuring proper service of process on the other parent. The $50 filing fee applies regardless of which route you choose. Parents uncertain about which option is appropriate for their situation can contact the Modification Unit at (605) 773-4724 for guidance based on their specific case circumstances.
Tips for a Successful Modification
Preparing a strong modification petition requires thorough documentation and clear presentation of changed circumstances. Gather at least three months of pay stubs, your most recent tax return with all schedules, and any documentation of changed circumstances such as termination letters, medical records, or custody modification orders. Calculate your estimated new support amount using the South Dakota guidelines to verify that your circumstances meet the 20% change threshold before investing time and the $50 filing fee in a petition that may be denied.
At the hearing, present your case professionally and focus on factual changes rather than emotional arguments about fairness. Bring organized copies of all financial documents, as the referee may ask questions about specific income or expense items. If you are the respondent opposing modification, prepare equally thorough documentation of your position, including evidence that the petitioner's claimed changes are exaggerated, temporary, or voluntary. Both parties benefit from understanding how the Income Shares Model calculates support, as this knowledge helps frame realistic expectations and supports more productive discussions about appropriate support levels.
Frequently Asked Questions
How much does it cost to modify child support in South Dakota?
The filing fee for child support modification in South Dakota is $50, payable to the Clerk of Courts before the Circuit Court Judge will appoint a referee. Recipients of public assistance benefits under SDCL Title 28 are exempt from this fee. Additional costs may include document copying, mailing expenses, and potentially attorney fees if you choose legal representation, though many parents successfully navigate the process without an attorney.
How long does child support modification take in South Dakota?
The typical timeline from filing a modification petition to receiving the referee's recommended order is 30 to 60 days in South Dakota. After the Division of Child Support reviews your paperwork, a hearing is typically scheduled within 30 days. The referee then issues a report and recommended order, usually within 60 days of the hearing date, which becomes final unless either party files an objection with the Circuit Court.
Can I modify child support if my order is less than three years old?
For orders entered after July 1, 2022, you must demonstrate a substantial change in circumstances (typically a 20% difference in the calculated support amount) if your order is less than three years old under SDCL § 25-7A-22. However, for orders entered before July 1, 2022, modification is available at any time without showing changed circumstances. This distinction makes the date of your original order crucial to determining your modification options.
What counts as a substantial change in circumstances?
South Dakota courts recognize job loss, significant income reduction, disability, incarceration, medical emergencies, changes in custody arrangements, and the emancipation of a child as substantial changes in circumstances. The key factor is whether the change produces at least a 20% difference in the calculated support amount when current incomes are applied to the guidelines. Voluntary changes, such as quitting a job without good cause, may not qualify, as courts may impute income based on earning capacity.
Can I reduce child support if I lose my job?
Yes, job loss typically qualifies as a substantial change in circumstances warranting child support modification in South Dakota. You should file your modification petition immediately after losing employment, as modifications are only effective from the filing date forward. Bring documentation of your termination, unemployment benefits if applicable, and evidence of your job search efforts. Courts may impute income if they determine the job loss was voluntary or if you are not actively seeking new employment.
How is child support calculated during modification?
South Dakota uses the Income Shares Model under SDCL § 25-7-6.2, calculating support based on both parents' combined monthly net incomes. The 2026 guidelines schedule determines base support amounts from $254 (at $1,200 combined income) to $1,822 (at $20,000 combined income) for one child. Each parent's share is proportional to their percentage of combined income. The court applies current income figures and compares the result to the existing order.
Do I need an attorney to modify child support?
No, South Dakota allows parents to file modification petitions without an attorney, and the Division of Child Support provides forms and guidance to assist self-represented parties. However, complex cases involving contested custody changes, disputed income calculations, or deviation requests may benefit from legal representation. The South Dakota Unified Judicial System provides self-help resources at ujs.sd.gov, and legal aid organizations may assist qualifying low-income parents.
Can I modify child support if my ex got a raise?
Yes, an increase in either parent's income can justify modification if the change produces at least a 20% difference in the calculated support amount. To request an increase in child support, file a modification petition documenting evidence of the other parent's increased income, such as publicly available information about their employer or industry, or request income verification through the court process. The referee will require both parents to submit current financial documentation.
What if my ex refuses to cooperate with the modification process?
The responding parent is required to submit financial information and appear at the modification hearing; failure to comply may result in the referee proceeding based on available evidence or imputing income to the non-cooperative party. If your ex refuses to appear at the hearing, the referee may recommend modification based solely on your documentation. For persistent non-cooperation, the court has authority to compel participation through contempt proceedings.
Will my modification be retroactive?
No, child support modifications in South Dakota are not retroactive beyond the date the petition was filed under SDCL § 25-7A-22. If circumstances change in January but you do not file until April, you remain responsible for the original support amount for January through March. This rule makes prompt filing essential when income drops significantly, as delays result in accumulating arrearages at the higher rate that cannot be forgiven retroactively.