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How is child support calculated in Georgia?

Federal & State Law Editorial TeamLast reviewed: 2026-04-30

Georgia child support is governed by O.C.G.A. § 19-6-15, a comprehensive Income Shares statute enacted in 2007.

1. Calculation Steps

  • Determine each parent's monthly gross income (§ 19-6-15(f)).
  • Combine gross incomes.
  • Find the Basic Child Support Obligation (BCSO) on the schedule in subsection (o) for the combined income and number of children.
  • Multiply by each parent's percentage share of combined income → Pro Rata Share.
  • Add the Presumptive Amount of each parent's share of work-related childcare and health insurance.
  • Apply allowed deviations (subsection (i)) — high income, low income, parenting time, alimony, child's extraordinary expenses, etc.
  • The non-custodial parent pays the final amount.
  • 2. Gross Income Definition (§ 19-6-15(f))

    Includes salaries, commissions, self-employment, bonuses, overtime, severance, recurring gifts, pensions, capital gains, Social Security disability/retirement, workers' comp, unemployment, fringe benefits reducing personal expenses, and imputed income for unemployed/underemployed parents (§ 19-6-15(f)(4)).

    3. Add-Ons (§ 19-6-15(h))

  • Work-related childcare
  • Health insurance premium for the child (parent's portion attributable to child)
  • Extraordinary educational expenses
  • Extraordinary medical expenses
  • 4. Parenting Time Deviation (§ 19-6-15(i)(2)(K))

    Georgia does not have a strict shared-parenting offset. Instead, the court may deviate from the presumptive amount based on parenting-time arrangements, with written findings.

    5. Duration (O.C.G.A. § 19-6-15(e); § 19-7-2)

    Support continues until the child:

  • Reaches age 18, OR
  • If still enrolled in secondary school, until graduation, but not past age 20.
  • For a permanently mentally or physically incapacitated adult child, support may continue under O.C.G.A. § 19-7-2.

    6. Modification (O.C.G.A. § 19-6-15(k))

    Modification requires a substantial change in either parent's income or financial status, or in the needs of the child. A petition cannot generally be brought within 2 years of a prior modification, except for specific exceptions (involuntary loss of income, etc.). Title IV-D agency reviews available every 3 years.

    7. Low-Income Deviation

    Available when the obligor would be left below self-support reserve.

    This is legal information, not legal advice.

    When to Talk to a Lawyer
    • You want a parenting-time deviation from presumptive amount
    • Income imputation for unemployment/underemployment is at issue
    • You need to modify within the 2-year window
    Related Statutes & Laws
    • O.C.G.A. § 19-6-15
    • O.C.G.A. § 19-7-2

    This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.