Ohio Child Support Calculator

Estimate your Ohio child support obligation using the 2024 Income Shares Model, the method Ohio courts use under Ohio Revised Code §3119.021. Enter both parents' incomes, the number of children, parenting time, and healthcare and childcare costs to see an estimate and a breakdown of how the obligation is determined. This tool is for estimation only — your final order is set by the court.

How Ohio Calculates Child Support

Ohio uses the Income Shares Model, which is built on the idea that children should receive the same proportion of parental income they would have if the parents lived together. The calculator combines both parents' gross annual incomes, looks up the basic support obligation on Ohio's statutory schedule (which covers combined incomes from $8,400 to $300,000), and then divides that obligation between the parents in proportion to their share of the combined income.

What You'll Need

  • Parenting arrangement — sole, shared, or split.
  • Number of children in this case.
  • Gross annual income for each parent.
  • Other children each parent supports (a 10% credit per child applies, up to a 50% maximum).
  • Adjustments — child health-insurance premiums and work-related childcare costs.
  • Parenting time — the number of overnights each parent has.

Step by Step

  1. Parent & child details — choose your parenting arrangement and number of children.
  2. Income — enter each parent's gross annual income.
  3. Adjustments — add health-insurance premiums, childcare costs, and credits for other children.
  4. Results — review your estimated monthly obligation and the breakdown showing how it was calculated.

Key Ohio Rules This Calculator Applies

  • Minimum support: Ohio's minimum order is $80 per month ($960 per year) under ORC §3119.06.
  • Parenting-time adjustment: a 10% reduction applies when a parent has 90 or more overnights in a shared-parenting arrangement.
  • Cash medical support: estimated at $388.70 per year per child.
  • Income range: the statutory schedule covers combined annual incomes from $8,400 to $300,000.

Frequently Asked Questions

How accurate is this child support estimate?
The calculator applies Ohio's 2024 Income Shares Model (ORC §3119.021) to your inputs, so it gives a close estimate and a breakdown of how the number is reached. Your final order is determined by the court and may differ based on deviations and case-specific factors.
What is the minimum child support in Ohio?
Ohio's minimum order is $80 per month ($960 per year) under ORC §3119.06, though courts can adjust based on circumstances.
Does parenting time lower child support?
It can. A 10% reduction applies when a parent has 90 or more overnights per year in a shared-parenting arrangement.
What information do I need to use the calculator?
You will need each parent's gross annual income, the number of children, your parenting arrangement and overnights, any other children each parent supports, and adjustments such as child health-insurance premiums and work-related childcare costs.

Reviewed by Stephanie Green, Esq. · Managing Partner, Gavvl Law · Last updated June 5, 2026

Call +1-844-694-2885 or email support@gavvl.com.