Oklahoma Child Support Calculator

How Oklahoma Calculates Child Support

Oklahoma first combines your and the other parent's gross monthly incomes to determine a total support amount, as if you were still living together. Your final responsibility is then calculated based on your percentage share of that combined income.

Understanding OK's Shared Custody Rules

When a parent has the child for at least 121 overnights per year, a special shared parenting time adjustment is used. This formula increases the basic child support obligation by 50% to cover duplicated costs in two households, and then credits each parent for the amount of time they spend with the child.

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Oklahoma Child Support FAQs


At what age does child support end in OK?

In Oklahoma, child support typically ends when a child turns 18. However, if the child is unmarried and still attending high school full-time, the support obligation continues until the child graduates or turns 19, whichever occurs first.



How is child support calculated if one parent is unemployed in OK?

If a parent is voluntarily unemployed or underemployed, a judge can 'impute' income to them. This means calculating support based on what they *could* be earning, often assuming a full-time, minimum-wage job at the very least, considering their skills and job history.



How do I modify a child support order in OK?

You can request a modification if there has been a 'material change in circumstances.' In Oklahoma, this is legally presumed if a new calculation shows the child support amount would change by 20% or more from the existing order.



Does OK child support cover college expenses?

No, a court cannot order a parent to pay for college expenses in Oklahoma, as the legal obligation for support ends at age 18 (or 19 if still in high school). Parents may voluntarily agree to share college costs in a separate, enforceable agreement.



How does OK handle health insurance and childcare costs?

The costs of health insurance premiums and work-related childcare are added on top of the basic child support obligation. These expenses are typically divided between the parents in proportion to their share of the combined gross monthly income.