Oklahoma Child Support
Calculator (2026)
Oklahoma uses an income shares model based on both parents’ gross monthly incomes. The basic obligation comes from the statutory §119 schedule ($50–$15,000/month combined, step lookup). Each parent pays a pro rata share.
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How Child Support Is Calculated in Oklahoma
Oklahoma calculates child support using the Income shares model on combined gross monthly income established under 43 O.S. §§ 118–119. This is a statutory formula that leaves limited room for judicial discretion on the base calculation amount, ensuring consistency and predictability for families across the state.
The Formula
Basic obligation from the §119 schedule based on combined gross monthly income and children. Each parent's share = pro rata; §118E offset applies at 121+ overnights.
The calculation begins with determining each parent's net disposable income, which includes virtually all sources of income minus taxes, mandatory payroll deductions, and certain hardship deductions. The court then applies the statutory formula using the time each parent has primary physical responsibility for the children and the applicable income allocation brackets.
Beyond the base formula amount, Oklahomarequires additional contributions for mandatory add-on expenses. These typically include childcare costs necessary for the custodial parent's employment or education, uninsured healthcare expenses for the children, and in some cases, educational and travel costs. These add-ons are split between parents in proportion to their respective incomes.
Primary statute: 43 O.S. §§ 118–119
Key Child Support Rules in Oklahoma
Statutory §119 schedule: $50–$15,000/month combined gross (step lookup; above $15,000 the court sets an additional amount).
Parenting time adjustment at 121+ overnights for the noncustodial parent (§118E): factors 2.0 (121–131), 1.75 (132–143), 1.5 (144+).
No support may be ordered against a parent with more than 205 overnights.
Health insurance and childcare allocated pro rata (§118F–G).
What Makes Oklahoma Child Support Unique
Oklahoma is an equitable distribution state — not community property.
Only "jointly-acquired" property is divided (43 O.S. §121(B)) — narrower than most equitable distribution states.
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Oklahoma Divorce Procedure at a Glance
Residency Requirement
6 months residency (43 O.S. § 102)
Mandatory Waiting Period
90 days with minor children (43 O.S. § 107.1, waivable); no statutory waiting period otherwise
No-Fault Ground
Incompatibility
State Income Tax
Three brackets, top 4.5% (TY2026, HB 2764)
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Frequently Asked Questions About Oklahoma Child Support
How is child support calculated in Oklahoma?
Oklahoma uses the Income shares model on combined gross monthly income under 43 O.S. §§ 118–119. Oklahoma uses an income shares model based on both parents’ gross monthly incomes. The basic obligation comes from the statutory §119 schedule ($50–$15,000/month combined, step lookup). Each parent pays a pro rata share.
What factors affect Oklahoma child support amounts?
Key factors include both parents' income, the number of children, custodial time share, mandatory add-on expenses (childcare, health insurance), and any applicable deductions. Statutory §119 schedule: $50–$15,000/month combined gross (step lookup; above $15,000 the court sets an additional amount).
Can Oklahoma child support be modified after the divorce?
Yes. Either parent can request a modification if there has been a material change in circumstances, such as a significant change in income, custody arrangements, or the needs of the child. The court will recalculate support using the same statutory formula.
What is the Oklahoma child support formula?
Basic obligation from the §119 schedule based on combined gross monthly income and children. Each parent's share = pro rata; §118E offset applies at 121+ overnights.
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Start My Free OklahomaEstimate →This tool provides educational estimates based on Oklahoma family law and does not constitute legal advice. Child support calculations are approximations of the statutory formula and may differ from court-ordered amounts. Consult a licensed Oklahoma family law attorney before making decisions. Primary statute: 43 O.S. §§ 118–119.