Calculation is client-side, income figures are never transmitted or stored.
How Georgia Child Support Is Calculated
- Determine each parent's monthly gross income, then combine both for total combined adjusted gross income.
- Look up the basic child support obligation from Georgia's official Schedule of Basic Obligations for that combined income and number of children.
- Each parent's pro rata share equals their income divided by combined income, applied to the basic obligation.
- If there is a court order for parenting time, apply the parenting time adjustment: each parent's court-ordered days with the child are raised to the power of 2.5 and cross-multiplied against the other parent's dollar share of the basic obligation — this can reduce the noncustodial parent's share to zero, or in some cases make the parent with more income owe more than the parent with less.
- Add each parent's pro rata share of work-related child care costs and health insurance premiums (Schedule D) to get the presumptive child support amount.
- Above $40,000/month combined adjusted gross income, courts determine support case-by-case rather than extending the table.
Georgia Child Support Worksheet Walkthrough
Example: combined adjusted gross income $5,000/month, 2 children, Parent A earns $3,000/mo (60% share), Parent B earns $2,000/mo (40% share) and is the noncustodial parent with 100 court-ordered parenting days/year (Parent B has 265).
- Basic child support obligation for $5,000 combined, 2 children: $1,341/month.
- Parent B (noncustodial)'s pro rata share before parenting time adjustment: 40% × $1,341 = $536.40/month.
- Parenting time adjustment (100^2.5 vs 265^2.5 cross-multiplied against each parent's dollar share) reduces this further because Parent B has meaningful court-ordered time with the child.
- Parenting time adjustment formula result: noncustodial parent's final guideline obligation is $108/month (down from the $536.40 pre-adjustment share, because Parent B has 100 court-ordered parenting days out of 365).
How This Calculator Works — Formula & Constants
Source: Georgia General Assembly — SB 454 (2026 session), amending O.C.G.A. § 19-6-15 · Calcul déterministe — no AI, no arbitrary estimate.
Constants used
| Constant | Value | Source |
|---|
Formula
base_obligation = schedule_lookup(combined_income, children)
share_B = parentB_income / combined_income
total_obligation = base_obligation + childcare_cost + health_insurance_cost
obligation_B = total_obligation × share_B
obligation_B = obligation_B × (1 - custody_credit(overnights))
Deterministic calculation based on Georgia's official guideline schedule table. Verify against Georgia's official calculator for a court-ready figure.
FAQ
How is child support calculated in Georgia?
Determine each parent's monthly gross income, then combine both for total combined adjusted gross income. Look up the basic child support obligation from Georgia's official Schedule of Basic Obligations for that combined income and number of children. Each parent's pro rata share equals their income divided by combined income, applied to the basic obligation. If there is a court order for parenting time, apply the parenting time adjustment: each parent's court-ordered days with the child are raised to the power of 2.5 and cross-multiplied against the other parent's dollar share of the basic obligation — this can reduce the noncustodial parent's share to zero, or in some cases make the parent with more income owe more than the parent with less. Add each parent's pro rata share of work-related child care costs and health insurance premiums (Schedule D) to get the presumptive child support amount. Above $40,000/month combined adjusted gross income, courts determine support case-by-case rather than extending the table.
What changed in Georgia child support law in 2026?
Senate Bill 454 replaced the old discretionary parenting-time deviation with a mandatory formula: each parent's court-ordered days with the child are raised to the power of 2.5 and cross-multiplied against the other parent's dollar share of the basic obligation (O.C.G.A. § 19-6-15(g), effective 2026-01-01). It also raised the income cap for the schedule table from $30,000 to $40,000/month combined adjusted gross income (effective 2024-07-01) and added a new low-income adjustment mechanism and table (effective 2026-01-01).
Does Georgia reduce child support for parenting time?
Yes, but only when there is a court order awarding parenting time — without one, the court determines support without this adjustment. When a court order exists, Georgia uses a mandatory power-of-2.5 formula rather than a simple overnight-credit table like some other states use; the adjustment can reduce the noncustodial parent's obligation to zero, or in some cases require the parent with more income to pay more than the parent with less.
What happens if combined income is above $40,000/month in Georgia?
Above $40,000/month in combined adjusted gross income, Georgia's official schedule doesn't provide a table value, and courts determine support case-by-case rather than automatically extending the formula. This cap was raised from $30,000/month effective 2024-07-01.
Is there a low-income adjustment in Georgia child support?
Yes. Effective 2026-01-01, Georgia added a low-income adjustment for parents with $3,950/month or less in individual adjusted gross income, applying a sliding percentage (19% for one child up to 28% for six children) of that parent's income, phased out as income rises within that range.
Methodology & Source
Formula model: income shares. Effective 2024-07-01, guideline version 2026-GA-v1, last reviewed 2026-07-12.
Official source: Georgia General Assembly — SB 454 (2026 session), amending O.C.G.A. § 19-6-15 (O.C.G.A. § 19-6-15).
Georgia courts can deviate for a low-income adjustment (parents at or below $3,950/month individual adjusted gross income, on a sliding 19-28% of income scale by number of children), high-income cases above the $40,000/month schedule cap, and other statutory deviations under O.C.G.A. § 19-6-15(i).
Guideline figures transcribed from the primary source above and cross-checked against Georgia's official calculator/worksheet for multiple test scenarios — see our verification methodology.