Child Support Calculator South Carolina: 2026 Guidelines, Worksheets, and Payment Estimates

Written by Antonio G. Jimenez, Esq. | Florida Bar No. 21022 Last updated: March 2026

South Carolina uses the Income Shares Model to calculate child support, meaning both parents share financial responsibility in proportion to their gross incomes. The state updated its child support guidelines on January 15, 2024, for the first time since 2014, raising support amounts approximately 25% or more to reflect a decade of inflation and increasing the combined gross income cap from $30,000 to $40,000 per month. For a family earning the median combined gross income of roughly $63,623 per year, support for two children runs approximately $1,188 per month under the current schedule. This guide walks through every step of using the child support calculator South Carolina courts rely on, from gathering income documentation to applying deviation factors under S.C. Code Ann. § 63-17-470.

Key Facts: South Carolina Child Support at a Glance

How the Income Shares Model Works in South Carolina

South Carolina determines child support by estimating the total cost of raising children at the parents' combined income level, then dividing that cost between them based on each parent's proportional share of gross income. Under S.C. Code Ann. § 43-5-580(b), courts must apply the published guidelines schedule unless a specific deviation factor applies. The 2024 update expanded the schedule to cover combined gross incomes from $750 through $40,000 per month, a significant increase from the previous $30,000 ceiling that better serves higher-earning families.

The model works by first adding both parents' monthly gross incomes together to find the combined total. The guidelines schedule then provides a base child support obligation keyed to that combined income and the number of children. Each parent's percentage share of combined income determines their proportional obligation. The custodial parent's share is presumed spent directly on the children through daily care, while the noncustodial parent's share becomes the child support payment. Additional costs for childcare and health insurance premiums for the children are divided between parents using those same proportional shares, then added to or subtracted from the base obligation to reach the final order amount.

What Counts as Gross Income Under South Carolina Guidelines

Gross income for child support purposes includes virtually all recurring monetary receipts before taxes and deductions, encompassing wages, salaries, commissions, bonuses, dividends, pensions, interest, trust income, Social Security benefits, workers compensation, unemployment benefits, and alimony received from other relationships. South Carolina courts cast a wide net to ensure the calculation reflects each parent's true earning capacity. The only major exclusions are means-tested public benefits such as SNAP or TANF and income from other children in the household who are not subject to the current order.

When a parent is voluntarily unemployed or underemployed, South Carolina courts may impute income based on several factors outlined in the guidelines. These factors include the parent's assets, recent employment history, job skills and education level, age, physical and mental health, criminal record, and conditions in the local job market. Courts examine whether the reduction in earnings was made in good faith or represents an attempt to minimize support obligations. A parent who leaves a high-paying position without legitimate cause can expect the court to calculate support based on their prior earnings rather than their current lower income, ensuring the children's standard of living is protected.

Using the Child Support Calculator South Carolina Provides Online

The South Carolina Department of Social Services hosts an official child support calculator at dss.sc.gov/child-support/calculator/ that walks parents through each input step and produces an estimated monthly obligation based on current guidelines. To use the calculator effectively, you need each parent's monthly gross income, the number of children covered by the order, monthly childcare expenses, monthly health insurance premiums attributable to the children, and any extraordinary medical expenses. The calculator applies the guidelines schedule automatically and shows the proportional split between both parents.

Before entering numbers into the child support calculator South Carolina provides, gather at least three months of pay stubs, your most recent tax return, documentation of any bonus or commission income, and records of childcare and health insurance costs. Self-employed parents should prepare profit and loss statements and business tax returns. The calculator produces an estimate, not a binding order. Judges retain discretion to deviate from the guidelines amount when specific statutory factors apply, so the calculator result serves as a starting point for negotiation or litigation rather than a guaranteed outcome.

The Three Child Support Worksheets Explained

South Carolina uses three distinct worksheets depending on the custody arrangement, and selecting the correct worksheet is the first step in any child support calculation. Worksheet A applies to sole custody situations where one parent has primary physical custody and the other has standard visitation. Worksheet B applies to split custody arrangements where each parent has primary custody of at least one child from the relationship. Worksheet C applies to shared custody situations where each parent has the children for at least 109 overnights per year, which represents roughly 30% of annual overnights.

Worksheet C includes an adjustment multiplier of 1.5 times the base obligation, which is then allocated based on each parent's income share and overnight percentage. This adjustment recognizes that shared custody creates duplicate household expenses such as separate bedrooms, clothing, and food at each home. The parent with fewer overnights typically pays the difference between the two calculated shares. Parents frequently dispute overnight counts to shift between Worksheet A and Worksheet C, making accurate parenting time records essential during child support proceedings.

2024 Guidelines Update: What Changed and Why It Matters

The January 15, 2024, guidelines update raised child support amounts by approximately 25% or more compared to the 2014 schedule, reflecting a decade of inflation in housing, food, healthcare, and childcare costs that the previous guidelines no longer captured accurately. The combined gross income ceiling increased from $30,000 to $40,000 per month, bringing higher-earning families within the guidelines framework rather than leaving their support amounts entirely to judicial discretion. The self-support reserve also increased from its prior level of $748 per month, providing greater protection for low-income obligors against orders that would push them below subsistence levels.

A new Extraordinary Medical Expense provision was added to the 2024 guidelines, creating a structured process for handling medical costs that exceed the standard health insurance premium allocation. This provision addresses situations where a child has chronic conditions, disabilities, or recurring medical needs that generate expenses well beyond typical health insurance coverage. Under the prior guidelines, these costs were handled inconsistently across family courts. The 2024 framework requires both parents to share extraordinary medical expenses proportionally based on their income shares, with clear documentation requirements and a threshold above which expenses qualify as extraordinary rather than routine.

Step-by-Step Calculation: How Courts Determine Your Amount

Calculating child support under the South Carolina guidelines involves a structured sequence that begins with income determination and ends with the final adjusted obligation. Start by calculating each parent's monthly gross income from all sources, including wages, bonuses, investment income, and any imputed income for underemployment. Add both parents' gross incomes together to determine the combined monthly gross income. Locate the combined income on the guidelines schedule to find the base child support obligation for your number of children. The schedule covers combined incomes from $750 to $40,000 per month in incremental steps.

Next, calculate each parent's percentage share of combined income by dividing their individual gross income by the combined total. Add the monthly cost of work-related childcare and the children's health insurance premiums to the base obligation. Multiply each add-on cost by each parent's income percentage to determine their proportional share of those expenses. Credit the parent who actually pays the childcare or insurance premium, and adjust the noncustodial parent's payment accordingly. For example, if combined gross income is $8,000 per month, the base obligation for two children might be $1,425. If Parent A earns $5,000 (62.5%) and Parent B earns $3,000 (37.5%), and Parent A pays $400 per month in childcare, Parent B's share of childcare ($150) gets added to their base obligation share ($534) for a total payment of $684 per month.

Deviation Factors: When Courts Order More or Less Than Guidelines

South Carolina courts may deviate from the guidelines amount when specific factors make the standard calculation unjust or inappropriate, as outlined in S.C. Code Ann. § 63-17-470. The statute lists nine categories of deviation factors: educational expenses for the children, the effect of equitable distribution on each parent's financial situation, consumer debts incurred during the marriage, families with six or more children, extraordinary medical expenses not covered by insurance, mandatory retirement contributions and union dues, support obligations for other dependents, significant income generated by the child, and substantial income disparity between parents that would leave one household significantly disadvantaged.

Courts evaluating deviation requests examine whether applying the standard guidelines amount would be inequitable given the totality of circumstances. A parent seeking an upward deviation must demonstrate specific additional costs or needs that the guidelines do not adequately address, such as a child's private school tuition or specialized therapy. A parent seeking a downward deviation must show that the guidelines amount would create genuine hardship, not merely inconvenience, and that reducing the payment would not compromise the child's welfare. Judges must make written findings explaining any deviation from the guidelines, specifying the deviation amount and the factual basis for the departure, which creates a record for potential appellate review.

Filing for Child Support in South Carolina: Costs and Process

Filing for child support in South Carolina costs approximately $150 for the initial divorce petition when support is requested as part of the divorce proceeding. As of March 2026, verify this amount with your local clerk, as fees vary slightly between counties. Parents who cannot afford the filing fee may request a waiver by submitting an Affidavit of Indigency using Form SCCA/400, which requires disclosure of income, assets, and monthly expenses. The court reviews the affidavit and grants the waiver if it determines the applicant genuinely cannot pay without depriving themselves or their dependents of necessities.

Residency requirements differ depending on whether one or both spouses live in South Carolina. If only one spouse resides in the state, that spouse must have been a South Carolina resident for at least one year before filing. If both spouses live in South Carolina, the residency requirement drops to three months. For no-fault divorce, South Carolina requires one year of continuous separation before the court will grant the divorce. Fault-based grounds, which include adultery, desertion for one year, physical cruelty, and habitual drunkenness or drug abuse, have no separation period requirement but carry a 90-day waiting period after filing before the court will finalize the case.

South Carolina Child Support Compared to Neighboring States

South Carolina's 2024 update positioned its guidelines among the most current in the Southeast, with the highest combined income cap in the region at $40,000 per month. The 109-overnight threshold for shared custody under Worksheet C is more accessible than North Carolina's 123-overnight requirement, meaning more South Carolina families qualify for the shared custody adjustment. Georgia uses a single worksheet with manual adjustments rather than distinct forms, which can produce less predictable results in shared custody situations. Parents relocating between these states should expect meaningful differences in their child support obligations even at identical income levels.

Modifying an Existing Child Support Order

South Carolina allows modification of child support orders when a substantial change in circumstances has occurred since the last order was entered. The most common grounds for modification include significant changes in either parent's income, changes in the custody arrangement or overnight schedule, changes in the children's medical needs or educational expenses, and the emancipation of one child when the order covers multiple children. The 2024 guidelines update itself does not automatically trigger modification of existing orders, but parents can petition for review if the new guidelines would produce a materially different amount than their current order.

To file for modification, submit a motion to the family court that issued the original order, along with the filing fee and updated financial declarations from both parents. The court will recalculate support using the current guidelines and compare it to the existing order. Most family law practitioners advise petitioning for modification when the recalculated amount differs from the current order by 15% or more, as courts generally view smaller differences as insufficient to justify the cost and disruption of modification proceedings. Either parent may file, meaning the noncustodial parent can seek a reduction and the custodial parent can seek an increase when circumstances warrant.

Enforcement When a Parent Does Not Pay

South Carolina enforces child support orders through the Department of Social Services Child Support Enforcement Division, which has authority to use income withholding, tax refund intercepts, license suspensions, passport denial, and contempt of court proceedings. Income withholding is the default collection method for all new orders, meaning child support is deducted directly from the obligor's paycheck before they receive it. When income withholding is insufficient or the obligor is self-employed, DSS can intercept state and federal tax refunds, place liens on real and personal property, and report delinquent accounts to credit bureaus.

Parents who fall behind on child support face escalating consequences under South Carolina law. The court may suspend driver's licenses, professional licenses, and recreational licenses for parents who are more than 90 days delinquent. Federal law authorizes the denial or revocation of passports for obligors owing more than $2,500 in arrears. In severe cases, the court may hold the delinquent parent in contempt, which can result in fines or incarceration for up to one year. Interest accrues on unpaid child support at the statutory rate, and arrears are not dischargeable in bankruptcy, meaning the obligation survives even if the parent files for bankruptcy protection.

How Childcare and Health Insurance Costs Factor In

Work-related childcare costs and the children's share of health insurance premiums are added to the base child support obligation before it is divided between parents according to their proportional income shares. The parent who actually pays the childcare provider or carries the children on their health insurance policy receives a credit against their obligation, while the other parent's share of those costs increases their payment amount. Under the 2024 guidelines, childcare costs must be reasonable and necessary for employment, meaning the court will evaluate whether the childcare arrangement is appropriate for the children's ages and the parent's work schedule.

Health insurance premiums are calculated by determining the marginal cost of adding the children to a parent's existing coverage, not the total premium for the family plan. If a parent's employer-sponsored plan costs $200 per month for individual coverage and $500 per month for family coverage, the children's share is $300. This $300 is added to the base obligation and split proportionally. The new Extraordinary Medical Expense provision in the 2024 guidelines addresses medical costs beyond standard coverage, including copays, deductibles, orthodontia, therapy, and prescription medications that exceed a threshold amount annually. Both parents share these extraordinary costs in proportion to their incomes, with documentation requirements to prevent disputes over what qualifies.

Tax Considerations for Child Support in South Carolina

Child support payments are neither deductible by the paying parent nor taxable income to the receiving parent under federal tax law, a rule that has been in effect since the Tax Cuts and Jobs Act of 2017 eliminated the alimony deduction and made this distinction permanent for all support types. This means the child support calculator South Carolina uses does not need to account for tax effects on the support payment itself. However, the dependency exemption and Child Tax Credit remain significant financial considerations that parents should address in their settlement agreement or court order, as only one parent can claim each child as a dependent in a given tax year.

The custodial parent is generally entitled to claim the children as dependents unless they sign IRS Form 8332 releasing the exemption to the noncustodial parent. Many South Carolina divorce agreements alternate the dependency exemption between parents annually or allocate different children to different parents. The Child Tax Credit, currently worth up to $2,000 per qualifying child, can represent substantial tax savings that effectively supplement the child support arrangement. Parents negotiating support should consider the after-tax value of payments and credits together rather than viewing the child support amount in isolation, as the dependency exemption allocation can shift thousands of dollars in tax liability between households.

Frequently Asked Questions