In South Carolina, alimony and child support serve fundamentally different purposes and follow entirely separate calculation methods. Alimony (spousal support) provides financial assistance to a dependent spouse after divorce, determined by judicial discretion using 13 statutory factors under S.C. Code § 20-3-130. Child support ensures children maintain their pre-divorce standard of living, calculated using the Income Shares Model under S.C. Code § 63-17-470 with specific guideline amounts based on combined parental income. The average child support payment for two children in South Carolina runs approximately $1,188 per month for families earning the median combined income of $63,623 annually, while alimony amounts vary widely based on marriage duration, income disparity, and fault considerations.
Key Facts: Alimony vs. Child Support in South Carolina
| Factor | Alimony (Spousal Support) | Child Support |
|---|---|---|
| Legal Basis | S.C. Code § 20-3-130 | S.C. Code § 63-17-470 |
| Calculation Method | Judicial discretion (13 factors) | Income Shares Model (guideline formula) |
| Recipient | Dependent spouse | Custodial parent (for children) |
| Terminates Upon | Death, remarriage, 90+ day cohabitation | Child reaches 18 (or 19 if in high school) |
| Tax Treatment (Federal) | Not deductible/not taxable (post-2018) | Not deductible/not taxable |
| Modifiable | Yes (periodic alimony) | Yes (substantial change in circumstances) |
| Adultery Impact | Bars receiving spouse from alimony | No direct impact on amount |
| Filing Fee | $150 (same divorce filing) | $150 (same divorce filing) |
How South Carolina Defines Alimony and Child Support
Alimony in South Carolina is financial support paid by one spouse to another following divorce, designed to address income disparity and allow the dependent spouse to maintain a reasonable standard of living. Under S.C. Code § 20-3-130, courts may award alimony "in such amounts and for such term as the court considers appropriate." South Carolina recognizes four distinct types of alimony: permanent periodic (ongoing monthly payments), rehabilitative (temporary support for education or job training), lump sum (fixed one-time payment), and reimbursement (repaying a spouse who funded the other's career advancement). The most common form is permanent periodic alimony, which continues until the recipient remarries, either spouse dies, or the recipient cohabitates with a romantic partner for 90 or more consecutive days.
Child support represents the financial contribution both parents must make toward raising their children, regardless of custody arrangements. South Carolina's child support guidelines under S.C. Code § 63-17-470 operate on the principle that children should receive the same proportion of parental income they would have enjoyed if their parents remained together. The state updated its child support guidelines on January 15, 2024, for the first time since 2014, raising support amounts approximately 25% to reflect a decade of inflation and increasing the combined gross income cap from $30,000 to $40,000 per month. Unlike alimony, child support follows a predictable formula that produces consistent results across similar cases.
The 13 Statutory Factors for South Carolina Alimony
South Carolina courts determine alimony using pure judicial discretion rather than a mathematical formula, weighing 13 factors enumerated in S.C. Code § 20-3-130. No single factor controls the outcome, and judges have broad latitude to assign different weights based on case circumstances. The 13 factors provide a comprehensive framework for evaluating the financial needs of the dependent spouse against the paying spouse's ability to pay, while accounting for the marriage's history and each party's contributions.
The statutory factors include: (1) duration of the marriage and ages of the parties at marriage and divorce; (2) physical and emotional condition of each spouse; (3) educational background and need for additional training or education; (4) employment history and earning potential; (5) standard of living established during the marriage; (6) current and reasonably anticipated earnings of both parties; (7) current and reasonably anticipated expenses and needs; (8) marital and nonmarital properties awarded in the divorce; (9) custody arrangements and their financial impact; (10) marital misconduct or fault of either party; (11) tax consequences of the alimony award; (12) prior support obligations from previous marriages; and (13) any other factors the court deems relevant and just.
Marriage duration significantly influences both the amount and type of alimony awarded. Marriages lasting 20+ years frequently result in permanent periodic alimony, while shorter marriages of 5-10 years more commonly receive rehabilitative alimony for a limited term. The pending 2025-2026 legislation (Bill 3074) would limit periodic alimony to marriages lasting at least 15 years if passed.
How South Carolina Calculates Child Support
South Carolina uses the Income Shares Model to calculate child support, producing predictable guideline amounts based on both parents' combined gross monthly income and the number of children. Under S.C. Code § 63-17-470, the court first determines each parent's gross monthly income from all sources including wages, self-employment income, bonuses, commissions, rental income, Social Security benefits, and imputed income if a parent is voluntarily unemployed or underemployed. The guidelines then specify a basic support obligation amount corresponding to the combined income level and number of children.
For a family earning the median combined gross income of approximately $63,623 per year ($5,302 per month), support for two children runs approximately $1,188 per month under the current schedule. Each parent owes a share of that obligation proportional to their percentage of combined income. For example, if Parent A earns 60% of combined income and Parent B earns 40%, Parent A's share of the $1,188 obligation equals $713 per month while Parent B's share equals $475. The parent with fewer overnights typically pays their share to the custodial parent.
Shared custody arrangements affect the calculation when each parent has the child for at least 110 overnights per year (approximately 30% of the time). The noncustodial parent retains a self-support reserve of at least $1,010.50 per month to cover basic living expenses before child support is calculated. Courts may deviate from guidelines based on nine categories of factors including educational expenses, extraordinary medical costs, equitable distribution effects, and substantial income disparity, but must make written findings explaining any departure.
Key Differences Between Alimony and Child Support
The fundamental distinction between alimony and child support in South Carolina lies in their purpose, calculation method, and termination conditions. Alimony compensates a spouse for economic disadvantage resulting from the marriage, while child support ensures children's financial needs are met regardless of parental circumstances. Understanding these differences helps divorcing couples anticipate their financial obligations and plan accordingly.
Purpose and Recipient
Alimony flows directly between former spouses, with the higher-earning spouse paying the lower-earning or non-earning spouse. The payment compensates for career sacrifices made during the marriage, such as leaving the workforce to raise children or supporting a spouse's education. Child support, by contrast, is paid to the custodial parent but legally belongs to the child. The receiving parent serves as a fiduciary, required to use the funds for the child's benefit including housing, food, clothing, education, and healthcare.
Calculation Certainty
Child support provides far more predictability than alimony in South Carolina. Parents can use the official South Carolina Department of Social Services calculator to estimate their likely support obligation within a narrow range. The Income Shares Model produces consistent results: two families with identical incomes and custody arrangements will receive substantially similar support orders. Alimony lacks any comparable formula, making outcomes highly dependent on the specific judge, the persuasiveness of each party's arguments, and the unique facts of each marriage.
Duration and Termination
Child support in South Carolina continues until the child turns 18, or 19 if still enrolled in high school and living with a parent. Emancipation, marriage of the child, or the child's death also terminates the obligation. Alimony termination varies by type: permanent periodic alimony ends upon the recipient's remarriage, either party's death, or the recipient's cohabitation with a romantic partner for 90+ consecutive days. Lump sum alimony, once ordered, cannot be modified and survives the recipient's remarriage. Rehabilitative alimony ends on its specified date unless extended by the court.
How Adultery Affects Alimony vs. Child Support
South Carolina treats adultery dramatically differently when determining alimony versus child support. Under S.C. Code § 20-3-130(A), a spouse who commits adultery before signing a settlement agreement or entry of a permanent court order is completely barred from receiving alimony. This adultery bar is absolute, regardless of other factors that might otherwise support an alimony award. A spouse who earns $30,000 annually while their partner earns $300,000 will receive zero alimony if proven to have committed adultery.
Child support faces no comparable adultery bar. Courts determine child support based solely on the parents' incomes, custody arrangements, and children's needs, without considering marital fault. A parent who committed adultery pays and receives the same child support amount as a parent who did not. South Carolina law recognizes that children's financial needs exist independently of their parents' marital misconduct. The pending 2025-2026 Bill 3078 would modify the adultery bar to allow alimony in certain circumstances even when adultery occurred, but as of April 2026, the absolute bar remains in effect.
Modification Rights: Alimony vs. Child Support
Both alimony and child support orders can be modified in South Carolina, but the standards and procedures differ significantly. Permanent periodic alimony may be modified upon showing a substantial change in circumstances affecting either party's financial situation. Common grounds for modification include job loss, significant income changes, serious illness, or the paying spouse's retirement. Under S.C. Code § 20-3-170, retirement by the paying spouse specifically constitutes sufficient grounds to warrant a hearing on whether to reduce or terminate alimony.
Child support modification similarly requires a substantial change in circumstances, but South Carolina provides additional specific grounds. Under S.C. Code § 63-17-470, courts may modify support when the current order differs from guideline amounts by 15% or more, when either parent's income changes significantly, when custody arrangements change, or when the child's needs change substantially due to medical conditions or educational requirements. Either parent may petition for modification by filing a motion with the Family Court that issued the original order.
Lump sum alimony cannot be modified under any circumstances once ordered. The fixed amount survives the recipient's remarriage, either party's bankruptcy, and any other subsequent events. Rehabilitative alimony may be extended if the recipient demonstrates continued need and progress toward self-sufficiency, but courts generally expect recipients to achieve independence within the original timeframe.
Tax Treatment of Alimony vs. Child Support
Federal tax treatment of alimony changed dramatically with the Tax Cuts and Jobs Act of 2017, effective for divorce agreements executed after December 31, 2018. For divorces finalized in 2019 or later, alimony is neither deductible by the payer nor taxable income to the recipient. This represents a significant shift from the prior rule where alimony payments were deductible to the payer and taxable to the recipient, often creating tax savings for couples with disparate tax brackets.
Child support has never been tax-deductible for the payer or taxable income to the recipient. Payments designated as child support pass tax-free between parents. However, the parent who claims the child as a dependent (typically the custodial parent with more than 50% overnights) receives the child tax credit and other child-related tax benefits. Parents may agree to alternate claiming children as dependents in different years, but any such arrangement must be documented with IRS Form 8332.
South Carolina follows federal tax treatment for both alimony and child support. No state income tax deduction exists for alimony payments, and child support creates no state tax consequences. When negotiating divorce settlements, couples should consider the after-tax impact of various alimony and property division scenarios, as the loss of alimony deductibility often affects the paying spouse's willingness to agree to higher amounts.
Which Is Typically Higher: Alimony or Child Support?
The relative amounts of alimony versus child support vary dramatically based on individual circumstances, but child support often exceeds alimony in South Carolina divorces involving multiple children. For a family with combined gross income of $10,000 per month and two children, the child support guideline amount runs approximately $2,100 per month before adjustments for custody time and other factors. Alimony in the same case might range from $0 to $2,500 per month depending on the 13 statutory factors, marriage duration, and whether either spouse committed adultery.
In long-term marriages (20+ years) with significant income disparity and no adultery, alimony can substantially exceed child support. A spouse earning $200,000 annually while their partner earned $40,000 might pay $3,000-$5,000 monthly in permanent periodic alimony, while child support for one child at that income level runs approximately $2,400 per month. However, alimony terminates upon remarriage or cohabitation, while child support continues regardless of the recipient's relationship status.
The interaction between alimony and child support matters significantly in South Carolina. Child support calculations consider alimony payments: alimony paid is deducted from the payer's gross income before calculating child support, while alimony received is added to the recipient's gross income. This interaction means higher alimony awards typically result in lower child support amounts, and vice versa. Strategic consideration of both obligations is essential when negotiating divorce settlements.
Enforcement Options for Unpaid Alimony vs. Child Support
South Carolina provides robust enforcement mechanisms for both unpaid alimony and child support, but child support enjoys additional federal enforcement tools. For alimony enforcement, the recipient may file a Rule to Show Cause asking the court to hold the non-paying spouse in contempt. Penalties for contempt include fines, jail time (up to one year per violation), attorney's fees, and interest on unpaid amounts. Courts may also order wage garnishment, bank account levies, or liens on real property.
Child support enforcement benefits from both state and federal programs. The South Carolina Department of Social Services Child Support Services division actively pursues non-paying parents through wage withholding, tax refund interception (state and federal), credit bureau reporting, professional license suspension, driver's license suspension, passport denial for arrearages exceeding $2,500, and criminal prosecution for willful non-payment. Federal law criminalizes crossing state lines to avoid child support obligations, carrying penalties up to two years imprisonment for failure to pay support for a child in another state.
Unpaid child support accrues interest at 7.25% annually in South Carolina and cannot be discharged in bankruptcy. Unpaid alimony similarly accrues interest and generally cannot be discharged in bankruptcy (for domestic support obligations), though property settlement payments may be dischargeable in Chapter 13 proceedings. Both obligations survive the death of the paying spouse and become claims against the estate.
Filing for Alimony and Child Support in South Carolina
Both alimony and child support are typically requested as part of the divorce complaint filed with the South Carolina Family Court. The filing fee for divorce is $150 in all 46 counties, paid to the Clerk of Court when submitting your Summons and Complaint. This single filing fee covers all requested relief including divorce, alimony, child support, custody, and property division. No separate filing fee applies for requesting alimony or child support within the divorce action.
South Carolina requires residency before filing for divorce: at least one spouse must have lived in the state for one year continuously before filing, or both spouses must have lived in South Carolina for at least three months if both currently reside in the state. Service of process costs $50-$125 depending on whether you use the sheriff ($50-$75) or a private process server ($75-$125). Parenting classes are mandatory in cases involving minor children, costing $50-$150 per parent.
Low-income filers may request a fee waiver using Form SCCA/400 if household income falls below 125% of the federal poverty level ($19,500 for individuals in 2026). The defendant or respondent pays no fee for filing an answer or responsive pleading. An uncontested divorce handled without attorneys typically costs $150-$500 total, while contested divorces involving custody disputes or significant property can reach $20,000-$45,000 when proceeding to trial.
FAQs: Alimony vs. Child Support in South Carolina
Can I receive both alimony and child support in South Carolina?
Yes, South Carolina courts routinely award both alimony and child support in the same divorce case when circumstances warrant. Alimony addresses income disparity between spouses, while child support ensures children's needs are met. A dependent spouse with primary custody of minor children may receive both types of support, though the amounts interact: alimony paid reduces the payer's income for child support calculations, potentially affecting both award amounts. Courts analyze each obligation separately using their respective statutory frameworks.
How long does alimony last compared to child support in South Carolina?
Child support in South Carolina continues until the child turns 18, or 19 if still enrolled in high school and living with a parent. Alimony duration varies by type: permanent periodic alimony continues indefinitely until the recipient remarries, either spouse dies, or the recipient cohabitates with a romantic partner for 90+ consecutive days. Rehabilitative alimony lasts a specified term, typically 2-5 years. Lump sum alimony is paid once and cannot be modified regardless of changed circumstances.
Does adultery affect child support in South Carolina?
No, adultery has no direct impact on child support calculations in South Carolina. Child support is determined solely by the Income Shares Model using both parents' incomes, the number of children, and custody arrangements. However, adultery completely bars the offending spouse from receiving alimony under S.C. Code § 20-3-130(A). A spouse who committed adultery will receive zero alimony regardless of how long the marriage lasted or how great the income disparity.
What happens to alimony if I remarry but child support continues?
Permanent periodic alimony terminates automatically upon the recipient's remarriage under S.C. Code § 20-3-130(B). Child support continues unchanged regardless of either parent's remarriage. A new spouse's income is not included when calculating child support owed by the biological parents. However, lump sum alimony survives remarriage because it represents a fixed obligation that cannot be modified once ordered.
Can alimony and child support be modified if circumstances change?
Yes, both permanent periodic alimony and child support can be modified upon showing a substantial change in circumstances. Common grounds include job loss, significant income changes, serious illness, or custody modifications. Child support may be modified when the current order differs from guidelines by 15% or more. Lump sum alimony cannot be modified under any circumstances. Retirement by the paying spouse specifically qualifies as grounds for an alimony modification hearing under S.C. Code § 20-3-170.
How does cohabitation affect alimony vs. child support in South Carolina?
Cohabitation with a romantic partner for 90 or more consecutive days terminates permanent periodic alimony under S.C. Code § 20-3-130(B). Courts may also find cohabitation when a recipient periodically separates to circumvent the 90-day requirement. Cohabitation has no effect on child support obligations. A custodial parent's new romantic relationship does not reduce or terminate the other parent's child support obligation, as the support belongs to the child regardless of household composition.
Is there a formula for calculating alimony in South Carolina?
No, South Carolina has no formula, percentage, or guideline for calculating alimony. Courts exercise pure judicial discretion, weighing 13 statutory factors under S.C. Code § 20-3-130 to determine appropriate amounts and duration. This contrasts sharply with child support, which follows the Income Shares Model with specific guideline amounts. Alimony outcomes depend heavily on the specific judge, marriage duration, income disparity, marital fault, and each attorney's persuasiveness.
What is the self-support reserve for child support in South Carolina?
South Carolina's child support guidelines include a self-support reserve of $1,010.50 per month for the noncustodial parent. This amount represents the minimum income a parent needs for basic living expenses before child support is calculated. If paying the full guideline amount would reduce the noncustodial parent's income below this threshold, the court adjusts the support order accordingly. No equivalent self-support reserve exists for alimony calculations.
Can child support be waived in a South Carolina divorce agreement?
No, parents cannot waive child support in South Carolina. Child support is the child's right, not the parent's, and cannot be bargained away in settlement negotiations. Courts will reject any agreement purporting to waive or significantly reduce child support below guideline amounts without proper justification. Alimony, by contrast, can be waived entirely if both spouses agree, as it represents only the dependent spouse's personal right to financial support.
How are alimony and child support enforced differently in South Carolina?
Child support enforcement benefits from extensive federal programs unavailable for alimony. The South Carolina Department of Social Services can intercept tax refunds, suspend driver's licenses and professional licenses, deny passports, and pursue criminal prosecution for non-payment. Alimony enforcement relies primarily on contempt proceedings in Family Court, which can result in fines, jail time, and attorney's fees. Both obligations accrue interest (7.25% annually for child support) and cannot be discharged in bankruptcy.