If you only remember one point about how child support is calculated in South Carolina, remember this: South Carolina uses the Income shares and measures income as gross income. South Carolina uses combined gross income schedules and allocates the basic obligation by income share. Shared custody worksheets and add-ons for health insurance and work-related childcare apply under DSS/Family Court practice. Procedure, examples, and the opinions below hang off S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines. Support generally ends when Support generally ends at 18, or upon high-school graduation if later, typically not past 19. Modification: Substantial change in circumstances; a significant percentage difference from guidelines often accompanies modification actions.
Deviation from the guidelines
Deviation is allowed when the guideline amount is unjust or inappropriate based on listed factors.
When a court departs from the presumptive amount, South Carolina practice generally requires findings that explain why the guideline figure is unjust or inappropriate and what amount better serves the child's needs. Those findings matter on appeal and in later modification proceedings.
Walking through South Carolina facts
Use this walkthrough to see which South Carolina authority does the work at each step.
Two parents in South Carolina need a presumptive child-support figure and may have facts that justify a departure.
- Measure guideline income as gross income under S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines.
- Apply the Income shares: South Carolina uses combined gross income schedules and allocates the basic obligation by income share. Shared custody worksheets and add-ons for health insurance and work-related childcare apply under DSS/Family Court practice.
- Test deviation: Deviation is allowed when the guideline amount is unjust or inappropriate based on listed factors.
- If circumstances later change: Substantial change in circumstances; a significant percentage difference from guidelines often accompanies modification actions.
The enforceable number is the South Carolina guideline result under S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines, plus any deviation findings. Department of Social Services Child Support Services enforces via withholding, intercepts, and contempt.
Modification of child support
Substantial change in circumstances; a significant percentage difference from guidelines often accompanies modification actions.
A parent seeking a change typically must show that circumstances after the prior order make the existing award inequitable. Common triggers include job loss, substantial income changes, a new parenting-time schedule, emancipation of a child, or extraordinary medical needs. Retroactivity and temporary relief rules are statute-specific — check S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines and local family-division procedures.
Enforcement in South Carolina
Department of Social Services Child Support Services enforces via withholding, intercepts, and contempt.
Interstate cases often implicate UIFSA. Income withholding, contempt, license suspension, and tax-refund intercept remain core tools nationwide, but the South Carolina child support agency and clerk of court procedures control day-to-day collection.
When child support ends
In South Carolina, Support generally ends at 18, or upon high-school graduation if later, typically not past 19. Orders may extend for disability, secondary education, or other statutory grounds where the statute allows. Always read the judgment language — agreed orders sometimes set a different end date or require a notice of emancipation.
Case law: how South Carolina courts apply the guidelines
The opinions below are in the LawDiver corpus. Each block quote is taken from the opinion text so you can jump from this guide into the full decision.
Brenda BADEAUX, Respondent, v. Billy D. DAVIS, Appellant
Brenda BADEAUX, Respondent, v. Billy D. DAVIS, Appellant, 337 S.C. 195 (1999)
…il contempt order finding him in arrears for failing to pay child support to Brenda Badeaux (Mother) pursuant to a foreign child support order registered in South Carolina. The judge found arrears of $19,856.16, calculated to April 23, 1998, but terminated the ongoing support as of the day the youngest child reached eighteen, January 15, 1998. On that date, the arrears totaled…
Brenda BADEAUX, Respondent, v. Billy D. DAVIS, Appellant is worth reading on South Carolina child support because the court put the point in its own words: "Brenda Badeaux (Mother) pursuant to a foreign child support order registered in South Carolina. The judge found arrears of $19,856.16, calculated to April 23, 1998, but terminated the ongoing support as of the day the youngest child reached eighteen, January 15, 1998." Use that passage as the starting point, then read the facts that precede it.
James Richard MILES, Petitioner, v. Theodora MILES, Respondent
James Richard MILES, Petitioner, v. Theodora MILES, Respondent, 393 S.C. 111 (2011)
…tery and sought custody of the couples’ two minor children, child support, equitable division of the marital assets, alimony, and attorney’s fees. Prior to the final hearing, the parties reached an agreement as to many of the issues, which provided in pertinent part: 5. [Husband] shall continue to maintain health and dental insurance on [Wife] through his place of employment un…
On child support, James Richard MILES, Petitioner, v. Theodora MILES, Respondent speaks to the South Carolina dispute in this passage: "Prior to the final hearing, the parties reached an agreement as to many of the issues, which provided in pertinent part: 5." The surrounding opinion shows how the court applied that language to the record.
Maria MILLER, Appellant v. Christopher MILLER, Respondent
Maria MILLER, Appellant v. Christopher MILLER, Respondent, 299 S.C. 307 (1989)
…ls a family court decree which terminated alimony, modified child support and visitation, and required Mrs. Miller to assist in transporting the children for visitation. We affirm in part and reverse in part. The Millers were divorced in Virginia in 1985. The Virginia court awarded custody of the couple’s two young, children to Mrs. Miller, and required Mr. Miller to provide su…
Practitioners open Maria MILLER, Appellant v. Christopher MILLER, Respondent when South Carolina child support turns on the distinction in this sentence: "Mrs. Miller to assist in transporting the children for visitation. We affirm in part and reverse in part. The Millers were divorced in Virginia in 1985. The Virginia court awarded custody of the couple’s two young, children to Mrs. Miller, and required Mr." Do not lift it out of the facts the court was deciding.
April M. ROGERS, Petitioner, v. Sidney ROGERS, Respondent
April M. ROGERS, Petitioner, v. Sidney ROGERS, Respondent, 343 S.C. 329 (2001)
…memorandum decision affirming the denial of an increase in child support. We reverse. FACTS Petitioner (Mother) and respondent (Father) married in 1976. They lived in Marion with their three minor children until they separated in June 1995. By order filed October 2, 1996, the family court granted a divorce on the ground of Mother’s post-separation adultery, awarded Mother cust…
South Carolina opinions such as April M. ROGERS, Petitioner, v. Sidney ROGERS, Respondent are cited where child support is disputed. The court stated: "We reverse. FACTS Petitioner (Mother) and respondent (Father) married in 1976. They lived in Marion with their three minor children until they separated in June 1995." That is the language to brief; the rest of the decision supplies the procedural posture.
Emily B. SMITH, Appellant/Respondent, v. Jeffrey O. SMITH, Respondent/Appellant
Emily B. SMITH, Appellant/Respondent, v. Jeffrey O. SMITH, Respondent/Appellant, 386 S.C. 251 (2009)
…the family court erred by refusing to: (i) deviate from the child support guidelines and include the cost of the parties’ daughter’s private school tuition in calculating child support; (ii) require Jeffrey Smith (Father) to obtain life insurance as security for his alimony and child support obligations; (iii) consider the cost of Mother’s medical insurance in awarding alimony;…
Emily B. SMITH, Appellant/Respondent, v. Jeffrey O. SMITH, Respondent/Appellant is worth reading on South Carolina child support because the court put the point in its own words: "the family court erred by refusing to: (i) deviate from the child support guidelines and include the cost of the parties’ daughter’s private school tuition in calculating child support; (ii) require Jeffrey Smith (Father) to obtain life insurance as security for his alimony and c" Use that passage as the starting point, then read the facts that precede it.
Cheryl Ann BURCH, Appellant, v. Thomas Andrew BURCH, Respondent
Cheryl Ann BURCH, Appellant, v. Thomas Andrew BURCH, Respondent, 395 S.C. 318 (2011)
…erest payment advanced by Wife; (4) the amount of Husband’s child support obligation; and (5) the assessment of attorney’s fees against Wife for her delay and noncooperation. We affirm in part and reverse in part. Facts/Procedural History Wife and Husband married on October 18, 1992, and filed for divorce on January 28, 2005. One child (Son) was born of the marriage. At the tim…
South Carolina opinions such as Cheryl Ann BURCH, Appellant, v. Thomas Andrew BURCH, Respondent are cited where child support is disputed. The court stated: "Wife; (4) the amount of Husband’s child support obligation; and (5) the assessment of attorney’s fees against Wife for her delay and noncooperation. We affirm in part and reverse in part." That is the language to brief; the rest of the decision supplies the procedural posture.
Michael ASHBURN v. April ROGERS and South Carolina Department of Social Services Child Support Division
…. The order required Ashburn to pay $100.00 semi-monthly in child support. In the order, Ashburn admitted to being the natural father; the order states "[non-custodial parent] freely and voluntarily acknowledged paternity" of Child. In May 2002, Ashburn signed an agreement with the Department of Social Services (DSS) requesting genetic testing, but he failed to submit a sample.…
South Carolina opinions such as Michael ASHBURN v. April ROGERS and South Carolina Department of Social Services Child Support Division are cited where child support is disputed. The court stated: "The order required Ashburn to pay $100.00 semi-monthly in child support. In the order, Ashburn admitted to being the natural father; the order states '[non-custodial parent] freely and voluntarily acknowledged paternity' of Child." That is the language to brief; the rest of the decision supplies the procedural posture.
SCDSS CHILD SUPPORT ENFORCEMENT/CINDY RUFF, Plaintiffs of Whom SCDSS Child Support Enforcement is Appellant v. Ralph
PER CURIAM. South Carolina Department of Social Services, Child Support Enforcement (DSS) appeals the family court’s denial of its motion to continue child support until the child’s graduation from high school. We affirm. FACTS Ralph Mangle is the father of Toran Mangle. On October 31, 1991, custody of Toran was given to his mother, and Mr. Mangle was ordered to pay child sup…
Practitioners open SCDSS CHILD SUPPORT ENFORCEMENT/CINDY RUFF, Plaintiffs of Whom SCDSS Child Support Enforcement is Appellant v. Ralph when South Carolina child support turns on the distinction in this sentence: "PER CURIAM. South Carolina Department of Social Services, Child Support Enforcement (DSS) appeals the family court’s denial of its motion to continue child support until the child’s graduation from high school. We affirm. FACTS Ralph Mangle is the father of Toran Mangle." Do not lift it out of the facts the court was deciding.
Practical checklist for South Carolina child support matters
- Gather recent pay stubs, tax returns, and proof of health insurance / child-care costs.
- Complete the current South Carolina worksheet or financial affidavit required by the local court.
- Document parenting-time overnights if a shared-custody adjustment may apply.
- Flag facts that could support deviation (special needs, travel costs, high income, other children).
- Search LawDiver for recent South Carolina appellate decisions before mediation or trial.
Key takeaways
- South Carolina follows the Income shares model for presumptive child support.
- Income is generally measured using gross income, then allocated under S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines.
- Guideline amounts are presumptive, not automatic — courts may deviate when the facts justify it.
- Support generally ends at 18, or upon high-school graduation if later, typically not past 19.
- Either parent can seek modification when substantial change in circumstances; a significant percentage difference from guidelines often accompanies modification actions..
- Read the companion guide: South Carolina alimony / alimony.
Statutory framework and guideline model
South Carolina's child support system is built around S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines. Under the income shares, South Carolina uses combined gross income schedules and allocates the basic obligation by income share. Shared custody worksheets and add-ons for health insurance and work-related childcare apply under DSS/Family Court practice.
Federal law requires every state to maintain presumptive guidelines and to review them at least every four years (42 U.S.C. § 667). Confirm the latest South Carolina schedule or worksheet before relying on any online calculator.
How child support is calculated in South Carolina
- Identify each parent's guideline income using gross income as defined in S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines and the accompanying worksheets or administrative rules.
- Apply the income shares — whether that means a combined-income schedule, an obligor percentage table, or a Melson-style self-support reserve plus primary obligation.
- Allocate add-ons such as health insurance premiums, unreimbursed medical expenses, and work-related child care according to South Carolina practice.
- Consider parenting time adjustments where the guidelines or case law authorize a credit or shared-custody formula.
- Test for deviation if a strict guideline result would be unjust or inappropriate on the record.
Online calculators can illustrate ranges, but only the controlling statute, guidelines, and court findings produce an enforceable order.
Frequently asked questions
How is child support calculated in South Carolina?
South Carolina uses the income shares under S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines. Courts start with gross income, apply the guideline schedule or percentage, allocate add-ons, and may deviate with findings when the presumptive amount is unjust.
What income counts for South Carolina child support?
Guideline income generally tracks gross income as defined by S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines and the worksheets. Wages, self-employment income, bonuses, and certain benefits are commonly included; exact deductions and exclusions are statute-specific.
Can South Carolina courts order more or less than the guideline amount?
Yes. Guideline support is presumptive. Judges may deviate when the record shows the guideline result is unjust or inappropriate, typically with written findings explaining the departure.
How do I modify a South Carolina child support order?
Substantial change in circumstances; a significant percentage difference from guidelines often accompanies modification actions. File in the court with continuing jurisdiction (or follow UIFSA for interstate cases) and support the request with current financial evidence.
When does child support end in South Carolina?
Support generally ends at 18, or upon high-school graduation if later, typically not past 19. Confirm any disability, educational, or agreed extensions in your particular order.
Where can I research South Carolina child support case law?
Use LawDiver search scoped to South Carolina, or open the opinions linked in this guide. Companion reading: South Carolina alimony guide.
Disclaimer
This guide is general legal information about South Carolina child support, not legal advice. Statutes, guidelines, and case law change. Confirm the current text of S.C. Code Ann. § 63-17-470; South Carolina Child Support Guidelines and consult a licensed South Carolina family-law attorney about your facts.