Based on O.C.G.A. § 19-6-15 (Income Shares Model)
Georgia uses the Income Shares Model (defined in O.C.G.A. § 19-6-15). The philosophy is that the child should receive the same proportion of parental income that they would have received if the parents lived together.
Unlike other states that have an automatic formula for 50/50 custody, Georgia requires a specific Deviation.
If the non-custodial parent spends significant time with the child (e.g., nearly 50%), they must request a "Parenting Time Deviation" on Schedule E of the official worksheet. This is discretionary—meaning a judge or jury decides if the reduction is in the "best interest of the child." It is not guaranteed by math alone.
Gross income includes salary, wages, commissions, self-employment income, bonuses, overtime, severance pay, pension/retirement income, interest, dividends, trust income, capital gains, disability benefits, workers' comp, and unemployment benefits.
Generally, no. A new spouse's income is not included in the parent's gross income for calculating child support. However, it might be relevant if a parent claims they cannot pay support due to their own household expenses, but the new spouse is covering them.