How Ohio Calculates Child Support

Ohio uses the income shares model to calculate child support, which is based on the principle that children should receive the same proportion of parental income they would have received if the parents had remained together. The calculation is governed primarily by ORC 3119.02 through 3119.04 and relies on a statutory schedule that links combined parental income to a presumed child support obligation.

Understanding how Ohio calculates child support is important whether you are establishing a new order, seeking a modification, or simply trying to anticipate what your obligation or entitlement will be.

The Income Shares Model

Ohio’s income shares model works by combining both parents’ gross incomes, determining the total child support obligation from a statutory schedule, and then allocating that obligation between the parents in proportion to their respective incomes. The parent who is not the residential parent (the obligor) pays their share to the other parent (the obligee).

Step-by-step overview

1. Determine each parent’s gross income
2. Combine the gross incomes to find combined gross income
3. Look up the basic child support obligation on the statutory schedule based on combined gross income and number of children
4. Add applicable adjustments (cash medical support, childcare costs)
5. Allocate the total obligation between parents based on each parent’s share of combined income
6. Apply any applicable deviations

Gross Income Definition

Under ORC 3119.01(C)(7), gross income for child support purposes is broadly defined and includes:

• Wages, salaries, bonuses, and commissions
• Self-employment income (gross receipts minus ordinary and necessary business expenses)
• Overtime pay, tips, and shift differentials
• Interest and dividend income
• Rental income
• Social Security benefits (including disability)
• Workers’ compensation benefits
• Unemployment compensation
• Pensions and retirement benefits
• Spousal support received from the other parent or a prior relationship
• Trust income
• Any other income or potential income

Imputed income

If a parent is voluntarily unemployed or underemployed, the court may impute income to that parent based on their earning capacity. The court considers the parent’s education, work history, skills, and local job market conditions. Ohio courts have consistently held that a parent cannot avoid child support obligations by choosing not to work or by taking a lower-paying job without a legitimate reason.

Self-employment income

For self-employed parents, the court examines the parent’s gross receipts and deducts ordinary and necessary business expenses. The court may scrutinize claimed expenses to ensure they are genuine business costs and not personal expenses disguised as business deductions. Depreciation and other non-cash expenses may be added back to income for child support purposes.

The Basic Child Support Schedule

Ohio’s basic child support schedule, found in ORC 3119.021, provides the presumed child support obligation based on the parents’ combined gross income and the number of children. The schedule covers combined incomes from approximately $6,600 per year up to $336,467 per year (adjusted periodically).

For example, if the parents’ combined annual gross income is $80,000 and there are two children, the schedule specifies a total annual obligation. That obligation is then split between the parents according to each parent’s percentage of the combined income.

If the combined income exceeds the schedule’s maximum, the court has discretion to set the support amount for income above the cap based on the needs and standard of living of the children.

Cash Medical Support

In addition to the basic child support obligation, the court orders cash medical support to cover the children’s health insurance costs. Under ORC 3119.30, the court determines the cost of health insurance coverage for the children and allocates that cost between the parents proportionally.

If a parent provides health insurance for the children through an employer, the additional cost attributable to the children (the difference between single coverage and family or parent-plus-children coverage) is factored into the calculation.

Childcare Costs

Work-related childcare costs are added to the basic child support obligation before the total is allocated between parents. Under ORC 3119.05, if either parent incurs childcare expenses due to employment, job training, or education leading to employment, those costs are included in the total obligation and shared proportionally.

Parenting Time Adjustment

Ohio provides a parenting time adjustment for the obligor parent who exercises significant parenting time. Under ORC 3119.051, if the obligor has court-ordered parenting time of 90 or more overnights per year, the court applies a 10% reduction to the obligor’s child support obligation.

This adjustment recognizes that a parent who has the children for a substantial portion of the year incurs direct costs (food, utilities, activities) during those parenting periods. The adjustment is not automatic in all cases — the court has discretion to apply it when the parenting time order provides for at least 90 overnights.

Note that this is a modest adjustment. Even with equal (50/50) parenting time, the higher-earning parent will still typically owe child support to the lower-earning parent under Ohio’s formula.

Deviation Factors

The amount calculated under the statutory schedule is a presumed obligation. The court may deviate from this amount if it determines that the presumed amount would be unjust or inappropriate. Under ORC 3119.23, the court may consider the following deviation factors:

• Special or unusual needs of the children (medical, educational, extracurricular)
• Other court-ordered obligations of either parent (support for other children, for example)
• Extended parenting time and associated costs
• The obligor’s financial resources and earning ability
• The standard of living the children would have enjoyed if the marriage had continued
• The physical and emotional condition of the children
• The educational needs and opportunities of the children
• The responsibility of each parent for the support of others
• Benefits received by either parent from remarriage or shared living arrangements
• Federal, state, and local taxes
• The child’s own income or resources
• Any other relevant factor

If the court deviates from the presumed amount, it must state in writing its findings of fact supporting the deviation.

Minimum Child Support Order

Ohio law establishes a minimum child support order of $80 per month. Even if the calculation produces a lower amount based on the obligor’s income, the court will generally order at least $80 per month unless doing so would be unjust or inappropriate.

The Role of the CSEA

Ohio’s Child Support Enforcement Agencies (CSEAs) play a central role in the child support system. Each county has a CSEA that can:

• Calculate child support using the statutory worksheet
• Establish child support orders through an administrative process (without going to court)
• Collect and distribute child support payments
• Enforce child support orders through wage withholding, tax intercepts, license suspension, and other mechanisms
• Review existing orders and recommend adjustments every 36 months (or upon request)

Parents can request that the CSEA conduct an administrative review of an existing child support order to determine whether a modification is warranted. If the recalculated amount differs from the current order by more than 10%, the CSEA will recommend a modification.

How Support Is Paid

Ohio requires most child support to be paid through income withholding. The obligor’s employer deducts the support amount from the obligor’s paycheck and sends it to the Ohio Child Support Payment Central (OCSPC), which distributes the funds to the obligee. This system reduces the risk of non-payment and creates a clear record of payments.

Self-employed obligors or those without a traditional employer may make payments directly to OCSPC.

What to Do Next

Ohio’s child support calculation involves multiple components — gross income determination, the statutory schedule, adjustments for medical support and childcare, parenting time credits, and potential deviations. The result can vary significantly depending on how income is defined, whether imputation is applied, and whether the court finds grounds for deviation.

For a broader understanding of child support principles, see our national guide on how child support is calculated. If you are interested in Ohio’s spousal support framework, our article on spousal support factors in Ohio covers that topic.

To get a clear picture of your specific child support situation, schedule a free consultation with an Ohio family law attorney who can run the calculations and explain your options.