Oklahoma child support calculator

Oklahoma follows the income-shares model. The idea is that a child should receive the same proportion of parental income they would have if the parents lived together. Both parents’ gross monthly income is combined and applied to the statutory schedule, and each parent is responsible for the share that matches their percentage of the combined income. The noncustodial parent pays their share to the other.

The heart of the calculation is the Schedule of Basic Child Support Obligations in 43 O.S. § 119 — for each number of children (one to six) and each level of combined gross monthly income, the schedule gives the total support the two parents together owe. It runs from $650 up to $15,000 combined per month in $50 increments.

To the base obligation Oklahoma adds work-related child care and the children’s health-insurance premium (a cash medical support obligation), which are shared in proportion to income. The combined figure is the total obligation, split by income share. When combined income is below $650/month the schedule bottoms out and Oklahoma sets a minimum order.

When the noncustodial parent has the children for more than 120 overnights a year, 43 O.S. § 118 applies a parenting-time adjustment that reduces the base obligation to reflect the shared cost of two households. Because that needs the exact overnight count, this calculator computes the standard obligation before any parenting-time adjustment.

It combines both parents’ income, looks up the 43 O.S. § 119 schedule, adds child care and health insurance, and splits the total by income share. It does not compute gross income from your pay stubs, run the parenting-time adjustment, apply the minimum-order rules in detail, add extraordinary expenses, or apply a deviation the court may order. For a figure you can file, use the Oklahoma Child Support Services calculator or consult an attorney.