How is child support calculated in Ohio?

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Ohio   child support   is governed by   R.C. Chapter 3119   and uses an   Income Shares   model based on a statewide schedule. The current schedule was overhauled by   HB 366   effective   March 28, 2019  .    1. The Income Shares Schedule (R.C. § 3119.021)   The schedule shows combined gross incomes from $8,400 up to   $336,467   annually, with corresponding presumptive support obligations by number of children. Above the cap, the court determines support   case-by-case   based on the needs and standard of living of the children.    2. Basic Calculation   1. Determine each parent's   gross income   (R.C. § 3119.01(C)(12)) — wages, self-employment, commissions, royalties, dividends, severance, pensions, unemployment, workers' comp, gifts, etc. 2.   Combine   gross incomes. 3. Look up the basic obligation on the   Schedule   (R.C. § 3119.021). 4. Add   add-ons   (childcare and health insurance under § 3119.30). 5. Each parent owes a   pro rata share  ; the non-residential parent's share becomes the order.    3. Parenting Time Adjustment (R.C. § 3119.051)   When the obligor has court-ordered parenting time of   90 or more overnights   per year, the obligor receives an   automatic 10% reduction  . Additional deviations are allowed for extended parenting.    4. Health Insurance & Cash Medical (R.C. § 3119.30)   The order must designate which parent provides health insurance, and the cost is allocated.   Cash medical support   of approximately $388.70/year per child (indexed) is added when no insurance is provided.    5. Duration (R.C. § 3119.86)   Support continues until the child: - Reaches age   18   if no longer attending high school, OR -   Graduates from high school   but not past age   19  , OR - Becomes emancipated through marriage, military, or self-support.  A   mentally or physically disabled   adult child may receive lifelong support if disabled before age 18.    6. Modification (R.C. § 3119.79)   A modification is warranted when guideline recalculation produces a   change of 10% or more   from the existing order. The agency can also conduct a   36-month administrative review  .    7. Self-Sufficiency Reserve (R.C. § 3119.06)   For obligors below 116% of the federal poverty level, a reduced minimum applies — typically   $80/month  .  This is legal information, not legal advice.