Ohio Child Support Guidelines: How Support Is Calculated

In Ohio, child support is calculated under the income shares model set out in Ohio Revised Code Chapter 3119: both parents' gross incomes are combined, a support amount is read off the state's Basic Child Support Schedule, and each parent pays their proportional share based on how much of the combined income is theirs. The amount can then be adjusted for things like how many overnights the child spends with each parent. Below is how the calculation actually works, what can change the number, and what to do next if you're dealing with a support case in Ohio.

How Ohio calculates the base child support amount

Ohio does not set support as a flat percentage of one parent's paycheck. Instead, under Chapter 3119, the court or Child Support Enforcement Agency (CSEA) adds both parents' gross incomes together, then looks up that combined figure on the Basic Child Support Schedule to find the total support obligation for the number of children involved. Each parent is then responsible for a share of that total in proportion to their share of the combined income.

Under Ohio Rev. Code § 3119.021, the schedule itself begins at a combined guideline income of $8,400 and rises in $600 increments up to a combined income of $300,000. If your combined income falls above or below the schedule's range, the calculation works differently and typically requires more individualized findings by the court.

What counts as "gross income"

Under Ohio Rev. Code § 3119.01, gross income is defined broadly. It includes earned and unearned income from essentially all sources, such as:

• Wages, salary, overtime, and bonuses
• Self-employment income
• Rents and dividends
• Pensions and retirement income
• Social Security benefits
• Workers' compensation
• Unemployment compensation

Gross income does not include means-tested public benefits, such as Ohio Works First, Supplemental Security Income (SSI), or SNAP food assistance. If you're not sure whether a particular source of money counts, ask your CSEA caseworker or the court before the hearing — don't guess.

Parenting time can lower the obligation

Ohio's guidelines build in a credit for shared parenting time. Under Ohio Rev. Code § 3119.051, if court-ordered parenting time equals or exceeds 90 overnights per year, the court or agency is required to reduce the paying parent's (the "obligor's") annual individual support obligation by 10 percent. That credit is not automatic and permanent — it can be eliminated if the obligor fails, without just cause, to actually exercise the parenting time that was ordered.

Separately, Ohio Rev. Code § 3119.231 requires the court to consider a deviation from the guideline amount whenever court-ordered parenting time exceeds 90 overnights. If parenting time reaches 147 overnights or more and the court decides not to deviate from the guideline amount, the law requires the court to put the supporting facts in its order explaining why. In practice, this means the more overnights written into your parenting time order, the more it can affect the final support number — so it's worth making sure your parenting time schedule is accurately reflected in what you give the court.

Minimum orders and low-income situations

Ohio sets a minimum child support order of $80 per month under Ohio Rev. Code § 3119.06. The court retains discretion to order less than that, or no support at all, in appropriate circumstances — for example, in cases involving very low income or other unusual facts. If you believe the guideline calculation doesn't fit your situation, you can raise that with the court or your CSEA caseworker, but it's the court's call.

Modifying an existing child support order

Child support orders in Ohio aren't necessarily set in stone. Under Ohio Rev. Code § 3119.79, if a recalculation of the guideline amount — using current incomes — comes out more than 10 percent higher or more than 10 percent lower than the existing order, that difference by itself counts as a "change of circumstance" that can support a modification. This is typically checked periodically or when a parent requests a review, often through the local CSEA. If your income, your co-parent's income, or the parenting time schedule has changed significantly since the last order, it may be worth requesting a review.

Getting help through your county CSEA

Every one of Ohio's 88 counties has a Child Support Enforcement Agency (CSEA), and its services are free. Parents apply through the Application for Child Support Services, administered by the Ohio Department of Job and Family Services. CSEA can help with locating a parent, establishing paternity, calculating and establishing a support order, and enforcing an existing order — you do not need a lawyer to open a CSEA case.

How support orders are enforced

Ohio's enforcement tools exist because Ohio, like every state, participates in the federal Title IV-D child support program. Under 42 U.S.C. §§ 654, 659, and 666, states that take federal funding for child support enforcement must adopt a standard set of enforcement tools, including:

• Automatic income withholding from paychecks
• License suspension for nonpayment
• Liens against property
• Garnishment of certain federal wages and benefits (the federal government has waived its own sovereign immunity for this purpose)

Unpaid child support can also be collected through federal tax refund offset (42 U.S.C. § 664), where a parent's federal tax refund is intercepted and applied to the arrears. And under the federal Bradley Amendment (42 U.S.C. § 666(a)(9)(C)), once child support accrues and becomes past due, it generally cannot be reduced or forgiven retroactively — a court can change support going forward, but not erase what's already owed.

If the other parent lives out of state

When parents live in different states, 28 U.S.C. § 1738B requires every state to enforce a valid child support order issued by another state, and it bars a second state from modifying that order except under narrow "continuing jurisdiction" rules. In practice, this works together with Ohio's adoption of the Uniform Interstate Family Support Act (UIFSA) so that only one state's order controls at a time, even if the parents move. If your case involves a parent who moved out of Ohio (or into Ohio from another state), tell your CSEA caseworker — interstate cases follow a different procedural path and your local CSEA can route the case correctly.

Child support and bankruptcy

Child support obligations are treated specially if a parent files for bankruptcy. Under 11 U.S.C. § 523(a)(5), a domestic support obligation like child support cannot be discharged (wiped out) in bankruptcy. Under 11 U.S.C. § 507(a)(1), it's also paid first — ahead of most other unsecured debts — if there are funds to distribute in a bankruptcy case. Property-settlement debts owed to an ex-spouse from a divorce decree are also generally non-dischargeable under § 523(a)(15). In short: a parent's bankruptcy filing does not erase a child support debt.

Time-sensitive: confirm current numbers before you rely on them

The Ohio child support statutes are periodically amended by the legislature, and the version of § 3119.01 referenced here carries an effective date of September 30, 2025. The dollar thresholds on the Basic Child Support Schedule ($8,400 starting point, $600 increments, $300,000 ceiling) and the $80 minimum order are the kind of figures that can be revised in future legislative sessions. Before you rely on any specific dollar figure in your own case, confirm the current numbers with your CSEA or check the current text of Chapter 3119 directly.

What you can do in Ohio

1. Open a case with your county CSEA if you don't already have a support order — services are free, and you apply through the Application for Child Support Services with the Ohio Department of Job and Family Services.
2. Gather proof of both parents' gross income — pay stubs, tax returns, self-employment records, and documentation of any other income sources — since the calculation depends on combined income.
3. Get your parenting time schedule in writing and accurate before the support order is calculated, since overnights at or above 90 per year can trigger the 10 percent credit, and overnights at or above 147 require the court to explain any decision not to deviate.
4. Ask about exclusions if part of your income comes from means-tested benefits like Ohio Works First, SSI, or SNAP — those generally shouldn't be counted as gross income.
5. Request a review if circumstances changed — if income or parenting time has shifted enough that a recalculation would come out more than 10 percent different from the current order, ask your CSEA about a modification review.
6. Tell your caseworker if a parent lives out of state so the case can be handled under the correct interstate (UIFSA) procedure rather than as a standard in-state case.
7. Keep paying while you seek a modification — because past-due support generally cannot be reduced retroactively, filing paperwork promptly matters more than waiting.

This article is general information about Ohio law, not legal advice for your specific situation — talk to a family law attorney or your local CSEA about your case.