South Dakota calculates child support using the income shares model under SDCL Chapter 25-7. Both parents' monthly net incomes are combined and applied to an obligation schedule covering up to $30,000 per month in combined net income (SDCL § 25-7-6.2). Each parent's share is proportional to their percentage of the combined income. The state provides an official child support calculator at apps.sd.gov, and courts may deviate from the guidelines based on specific factors outlined in SDCL § 25-7-6.10.
Key Facts: South Dakota Divorce and Child Support
| Factor | Detail |
|---|---|
| Filing Fee | $95 (answer filing: $25). As of March 2026. Verify with your local clerk. |
| Residency Requirement | Must be a resident at the time of filing; no minimum duration (SDCL § 25-4-30) |
| Waiting Period | 60 days from service of summons (no exceptions) |
| Grounds for Divorce | Irreconcilable differences (no-fault), adultery, extreme cruelty, willful desertion, willful neglect, habitual intemperance, felony conviction, chronic mental illness |
| Property Division | Equitable distribution |
| Child Support Model | Income shares model (SDCL Chapter 25-7) |
| Age of Emancipation | 18, or 19 if enrolled full-time in high school |
| Official Calculator | SD Child Support Calculator |
How Does the Child Support Calculator in South Dakota Work?
The child support calculator South Dakota families use applies the income shares model, which bases each parent's obligation on their proportional share of combined monthly net income. Under SDCL § 25-7-6.1, each parent's obligation is determined by their means and income. The obligation schedule set forth in SDCL § 25-7-6.2 covers combined monthly net incomes up to $30,000 and adjusts the base obligation by the number of children requiring support. The non-custodial parent typically pays the difference between their proportional share and any direct expenditures they make on behalf of the children.
To use the South Dakota child support calculator, each parent must determine their monthly gross income, subtract allowable deductions to arrive at net income, and then combine both net incomes. The obligation schedule produces a base support amount for the number of children involved. That base amount is then divided proportionally between the parents. For example, if Parent A earns 60% of the combined net income and Parent B earns 40%, Parent A is responsible for 60% of the base obligation. Adjustments may then be applied for health insurance premiums, child care costs, and extraordinary expenses before arriving at the final monthly support order.
The state's official online child support estimator is available at apps.sd.gov and allows parents to input their income figures, deductions, and custody arrangements to generate a preliminary estimate. Courts are not bound by the calculator output but use the guidelines as a rebuttable presumption of the correct support amount. A shared parenting worksheet is also available for cases involving shared physical custody, which adjusts the obligation to account for the additional time each parent spends with the children.
What Counts as Gross Income for Child Support Purposes?
Gross income under South Dakota child support law includes all income from any source, whether earned or unearned, before taxes and deductions. SDCL § 25-7-6.3 defines gross income broadly to encompass wages, salaries, commissions, bonuses, self-employment income, pensions, Social Security benefits, workers' compensation, unemployment benefits, annuities, trust income, rental income, dividends, interest, and any other periodic payments. Courts have discretion to impute income to a parent who is voluntarily unemployed or underemployed based on their earning capacity, work history, and available employment opportunities.
Notably, SDCL § 25-7-6.6 authorizes the court to disregard non-cash deductions on a parent's tax return when calculating gross income. This provision prevents parents from artificially reducing their reported income through accelerated depreciation, paper losses, or other tax strategies that do not reflect actual cash available for child support. The court examines the parent's true economic circumstances rather than relying solely on tax return figures. This is particularly relevant for self-employed parents and business owners who may claim significant non-cash deductions that reduce taxable income without correspondingly reducing the cash available to support their children.
What Deductions Are Allowed When Calculating Net Income?
Net income equals gross income minus specific allowable deductions enumerated in SDCL § 25-7-6.7. Permitted deductions include federal and state income taxes (at the correct filing status and exemption level), Social Security taxes (FICA), mandatory retirement contributions required as a condition of employment, union dues, and health insurance premiums for the parent only. Support obligations for children from other relationships that are actually being paid pursuant to a court order are also deductible. These deductions are designed to reflect the parent's actual disposable income available for child support purposes.
Parents cannot deduct voluntary retirement contributions beyond mandatory amounts, personal loan payments, credit card debt, or living expenses such as rent and utilities. The distinction between mandatory and voluntary deductions is critical. For instance, a teacher required to contribute 6% of salary to a state pension plan may deduct that amount, but a parent making elective 401(k) contributions generally may not. Understanding which deductions South Dakota allows is essential when using the child support calculator South Dakota provides, because overestimating deductions will produce an inaccurately low support figure, while underestimating them will inflate the projected obligation.
How Is the Support Obligation Determined From the Schedule?
Once both parents' net incomes are calculated, they are combined and applied to the child support obligation schedule under SDCL § 25-7-6.2. The schedule provides a base monthly obligation that varies by the number of children and the level of combined net income. The schedule covers combined monthly net incomes from $0 up to $30,000. For combined incomes exceeding the schedule maximum, the court has discretion to set an appropriate amount based on the children's needs and the parents' financial circumstances.
The base obligation from the schedule is then allocated between the parents in proportion to each parent's share of the combined net income. If Parent A has a monthly net income of $4,000 and Parent B has a monthly net income of $2,500, the combined net income is $6,500. Parent A's proportional share is approximately 61.5%, and Parent B's share is approximately 38.5%. If the schedule sets the base obligation for two children at a combined net income of $6,500 at $1,200 per month, Parent A would be responsible for approximately $738 and Parent B for approximately $462. The non-custodial parent's share becomes the child support payment, while the custodial parent's share is presumed to be spent directly on the children through daily care.
Contested vs. Uncontested: How Does the Process Differ?
South Dakota divorce proceedings involving child support can follow either a contested or uncontested path, with significant differences in cost, timeline, and complexity. Understanding these differences helps parents plan effectively.
| Factor | Uncontested | Contested |
|---|---|---|
| Filing Fee | $95 | $95 (plus answer filing $25) |
| Attorney Fees (Typical) | $1,500 - $3,500 | $5,000 - $25,000+ |
| Timeline | 60-90 days | 6-18 months |
| Support Calculation | Parents agree using worksheet | Court determines using guidelines |
| Deviation from Guidelines | By mutual agreement | Court decides based on SDCL § 25-7-6.10 |
| Grounds Required | Irreconcilable differences (both agree) | Any statutory ground |
| Trial Required | No | Possible |
| Discovery Process | Minimal | Full financial discovery common |
| Shared Parenting Worksheet | Optional if agreed | May be required by court |
In an uncontested case, both parents agree on child support using the child support worksheet and submit a stipulated agreement to the court. The 60-day waiting period from service of summons still applies with no exceptions. In a contested case, the court conducts a hearing, reviews financial disclosures from both parties, and applies the obligation schedule to determine the support amount. Contested cases often involve disputes over income calculation, allowable deductions, deviation factors, and custody arrangements that directly affect the support obligation.
What Factors Can Cause the Court to Deviate From Guidelines?
South Dakota courts may deviate from the standard child support guidelines when strict application would be unjust or inappropriate. SDCL § 25-7-6.10 identifies specific deviation factors the court may consider, including the financial condition of each parent, the standard of living the child would have enjoyed had the family remained intact, the physical and emotional needs of the child, the educational needs of either parent, the tax consequences of the support arrangement, and any voluntary agreements between the parties regarding support amounts. The court must make written findings explaining why the guideline amount is unjust and detailing the basis for the deviation.
Additionally, SDCL § 25-7-6.15 allows the court to consider extraordinary travel costs associated with parenting time when setting or modifying child support. In a geographically large state like South Dakota, where parents may live hundreds of miles apart, travel costs for exercising parenting time can be substantial. The court may adjust the support obligation to account for these costs, either by reducing the paying parent's obligation or by allocating travel costs between the parents based on their respective incomes and the circumstances that created the distance between their residences.
How Does Health Insurance Factor Into Child Support Calculations?
Health insurance for children is a mandatory component of South Dakota child support orders. Under SDCL § 25-7-6.16, the court must address health insurance coverage in every child support order. Health insurance is considered reasonable in cost if the premium does not exceed 8% of the obligated parent's net income. When a parent has access to employer-sponsored or other group health insurance that meets this threshold, the court will typically order that parent to maintain coverage for the children. The cost of the children's portion of the health insurance premium is then factored into the overall support calculation.
The custodial parent bears responsibility for the first $250 in uninsured health care expenses per child per year under SDCL § 25-7-6.16. Beyond that $250 threshold, uninsured medical expenses are divided between the parents in proportion to their respective net incomes. This includes copays, deductibles, dental care, orthodontia, vision care, prescription medications, and mental health treatment not covered by insurance. Parents should retain all medical receipts and documentation, as the court may require proof of expenses when dividing costs. Failure to maintain court-ordered health insurance can result in contempt proceedings, and the non-compliant parent may be held liable for all medical expenses that would have been covered.
When Does Child Support End in South Dakota?
Child support in South Dakota terminates when the child reaches the age of emancipation, which is 18 years old. However, if the child is still enrolled full-time in high school at age 18, support continues until the child graduates or turns 19, whichever occurs first. There is no automatic provision for college support under South Dakota law unless the parents specifically agree to include post-secondary education costs in their divorce settlement or support agreement. Courts cannot order college support absent parental agreement. For children with disabilities that prevent self-support, the court may order support to continue past the age of 19 based on the child's ongoing needs and the parents' financial ability to provide assistance.
Emancipation can also occur before age 18 in certain circumstances, such as when a minor marries, enters active military service, or is legally emancipated by court order. Parents should be aware that child support does not automatically terminate; the paying parent must typically file a motion to terminate or modify the support order. Continuing to pay support after the legal obligation ends does not create a right to reimbursement, and failing to pay before the obligation ends can result in enforcement actions. Each child's support obligation is calculated and terminates independently, so the total support amount should be recalculated each time a child reaches emancipation age.
How Can Child Support Be Modified in South Dakota?
Modification of a child support order in South Dakota requires a showing of a substantial and continuing change in circumstances. Either parent may petition the court for a modification, but the requesting parent bears the burden of proving that circumstances have materially changed since the original order was entered or last modified. Common grounds for modification include significant changes in either parent's income (job loss, promotion, disability), changes in the child's needs (medical condition, educational requirements), changes in custody or parenting time arrangements, and changes in the number of children requiring support due to emancipation of an older child.
The 2025 Commission on Child Support report recommended updates to South Dakota's obligation schedule to reflect current economic conditions and the actual costs of raising children. These recommended changes, if adopted by the legislature, could affect future support calculations and may constitute a basis for modification of existing orders. Parents seeking modification should gather documentation of the changed circumstances, including pay stubs, tax returns, medical records, and any other evidence supporting the need for adjustment. The court will recalculate support using the current guidelines and the updated income information, and will only modify the order if the new calculation produces a materially different result from the existing order.
What Enforcement Tools Are Available for Unpaid Child Support?
South Dakota provides robust enforcement mechanisms for collecting unpaid child support. The state's Division of Child Support within the Department of Social Services can assist with enforcement, and custodial parents may also pursue enforcement through private attorneys or by filing motions directly with the court. Available enforcement tools include income withholding (wage garnishment), which is the most common and effective method. Under federal law, all new child support orders must include an income withholding provision, and employers are required to comply with withholding orders within a specified timeframe.
Beyond wage garnishment, South Dakota enforcement options include suspension of driver's licenses, professional licenses, and recreational licenses for parents who are delinquent in their support payments. The court may hold a non-paying parent in contempt, which can result in fines and incarceration of up to 90 days. Additional enforcement tools include interception of state and federal tax refunds, seizure of bank accounts, placement of liens on real and personal property, credit bureau reporting of delinquent support obligations, and passport denial for arrearages exceeding $2,500. The state also participates in the Uniform Interstate Family Support Act (UIFSA) for enforcement of orders across state lines when the non-custodial parent resides in another state.
How Does Shared Parenting Affect Child Support in South Dakota?
When parents share physical custody of their children, South Dakota provides a shared parenting worksheet that adjusts the standard child support calculation. The shared parenting worksheet accounts for the fact that both parents incur direct costs for the children during their respective parenting time periods. The adjustment typically applies when the non-custodial parent exercises parenting time for a significant portion of the year, generally defined as more than 180 overnights annually. The shared parenting calculation multiplies the base obligation by a factor that reflects the division of parenting time, reducing the non-custodial parent's transfer payment to account for the direct expenditures they make during their parenting time.
The shared parenting worksheet does not eliminate child support entirely, even when parents share equal (50/50) parenting time. The higher-earning parent will typically still owe some support to the lower-earning parent to equalize the children's standard of living between both households. The calculation ensures that children benefit from both parents' combined income regardless of which household they are in at any given time. Parents considering shared custody arrangements should run the child support calculator South Dakota provides using both the standard worksheet and the shared parenting worksheet to understand how different custody arrangements affect the financial obligation before finalizing their parenting plan.
Step-by-Step: How to Calculate Child Support in South Dakota
Calculating child support using South Dakota's income shares model involves a systematic process. Following these steps with the child support worksheet produces a result consistent with the court's guidelines.
- Determine each parent's monthly gross income from all sources as defined by SDCL § 25-7-6.3, including wages, self-employment income, investment income, and benefits.
- Subtract allowable deductions per SDCL § 25-7-6.7: federal and state income taxes, FICA, mandatory retirement contributions, union dues, parent-only health insurance premiums, and prior child support obligations being paid.
- Arrive at each parent's monthly net income.
- Combine both parents' monthly net incomes (schedule covers up to $30,000 combined).
- Look up the base obligation on the schedule (SDCL § 25-7-6.2) for the applicable combined net income level and number of children.
- Calculate each parent's proportional share of the combined net income (parent's net income divided by combined net income).
- Multiply the base obligation by each parent's proportional share.
- Add the children's health insurance premium cost to the base obligation and allocate proportionally.
- Add work-related child care costs and allocate proportionally.
- Apply any applicable deviation factors under SDCL § 25-7-6.10 if the standard amount would be unjust.
- If shared parenting applies, use the shared parenting worksheet to adjust for each parent's overnight count.
- The non-custodial parent's adjusted proportional share becomes the monthly child support order.
This process can be completed using the official South Dakota Child Support Calculator, which automates the lookup and proportional calculations. Parents should have recent pay stubs, tax returns, and documentation of health insurance costs and child care expenses readily available before beginning the calculation.
Frequently Asked Questions
What is the minimum child support payment in South Dakota?
South Dakota does not set a fixed minimum dollar amount for child support. The obligation schedule under SDCL § 25-7-6.2 calculates support based on combined net income, so very low-income parents may owe as little as $50-$100 per month depending on income level and number of children. Courts retain discretion to set appropriate amounts.
Can parents agree to waive child support in South Dakota?
Parents cannot waive child support entirely because the right to support belongs to the child, not the parents. However, parents may agree on an amount that differs from the guidelines if the court finds the agreed amount adequately meets the child's needs. The court must approve any deviation from the guideline amount with written findings.
Does overtime income count toward child support calculations?
Yes, overtime income is included in gross income under SDCL § 25-7-6.3. Courts typically average overtime income over a 12-24 month period to account for fluctuations. If overtime is sporadic and unpredictable, the court may exclude or discount it, but regular and consistent overtime is fully included in the calculation.
How long does it take to get a child support order in South Dakota?
In an uncontested divorce, a child support order can be established within 60-90 days, accounting for the mandatory 60-day waiting period from service of summons. In contested cases, the process may take 6-18 months depending on the complexity of financial disputes and court scheduling in the applicable county.
Is child support taxable income in South Dakota?
No. Under federal tax law effective since the Tax Cuts and Jobs Act of 2017, child support payments are neither taxable income to the recipient nor tax-deductible for the paying parent. South Dakota has no state income tax, so there are no state-level tax implications for child support payments.
Can child support be modified if I lose my job?
Yes, involuntary job loss constitutes a substantial and continuing change in circumstances that may warrant modification. You must file a motion with the court promptly; support is not automatically reduced. The court will recalculate using current income, but may impute income at your earning capacity if the job loss was voluntary or the court finds you are not making reasonable efforts to find employment.
Does the $250 per child medical expense threshold reset annually?
Yes, under SDCL § 25-7-6.16, the custodial parent is responsible for the first $250 in uninsured health care expenses per child per calendar year. This threshold resets each year, and expenses beyond $250 per child are divided between parents proportionally based on their respective net incomes.
What happens if the non-custodial parent moves out of state?
South Dakota participates in the Uniform Interstate Family Support Act (UIFSA), which provides mechanisms for enforcing and modifying child support orders across state lines. The original South Dakota order remains in effect and enforceable. Wage garnishment can be directed to out-of-state employers, and the state can coordinate with other states' child support agencies for enforcement.
Can grandparents be ordered to pay child support in South Dakota?
No, South Dakota does not impose child support obligations on grandparents. Under SDCL § 25-7-6.1, the support obligation is based on the parent's means and income. Only biological or adoptive parents have a legal obligation to support their children. Grandparents may voluntarily contribute but cannot be compelled by court order.
Is there a South Dakota child support estimator I can use before filing?
Yes, the state provides a free online child support calculator at apps.sd.gov. This estimator uses the same obligation schedule and income shares model that courts apply. While the estimate is not binding, it provides a reliable preliminary calculation that closely approximates what a court would order based on the same income figures.