How Child Support is Calculated in Ohio
Ohio uses an Income Shares model under Ohio Revised Code §3119. The state publishes a Basic Child Support Schedule (last updated 2019) covering combined gross incomes up to $336,467 per year. Each parent's share is proportional, and Ohio applies a 10% parenting time adjustment when the obligor has 90+ overnights.
Estimated Monthly Child Support in Ohio
Below are sample calculations using our Ohio formula. These figures assume the higher-earning parent pays support and exclude childcare or insurance add-ons.
| Your Income | Other Parent | 1 Child | 2 Children | 3 Children |
|---|---|---|---|---|
| $3,000/mo | $3,000/mo | ~$720 | ~$1,260 | ~$1,692 |
| $4,000/mo | $2,500/mo | ~$880 | ~$1,540 | ~$2,068 |
| $6,000/mo | $3,000/mo | ~$1,200 | ~$2,100 | ~$2,820 |
What Can Increase or Decrease Payments in Ohio?
- Each parent's gross monthly income from all sources
- The number of children covered by the order
- Health insurance premiums paid for the children
- Work-related childcare and daycare expenses
- How much overnight parenting time each parent has
- Any extraordinary medical, educational, or special-needs costs
How to File for Child Support in Ohio
- Open a case with Ohio's Department of Child Support Services (or the equivalent state agency).
- Provide proof of both parents' income — pay stubs, tax returns, or a financial affidavit.
- Submit a parenting plan or custody order showing each parent's overnight time.
- Attend a hearing or administrative review where a judge or referee finalizes the order.
Frequently Asked Questions — Ohio Child Support
Does Ohio use gross or net income?
Ohio uses gross income for the guideline calculation, then applies standardized deductions for taxes and existing support obligations.
What is Ohio's parenting time adjustment?
When the paying parent has at least 90 overnights per year, Ohio automatically applies a 10% reduction to the support amount.
Are childcare costs included separately in Ohio?
Yes. Work or education-related childcare is added to the basic obligation and split proportionally between the parents.
When does Ohio child support end?
Support ends at age 18, or up to 19 if the child is still in high school. Ohio does not require parents to fund college.