Oklahoma Child Support Calculator (2026)
Oklahoma calculates child support under income-shares guidelines (43 O.S. § 119). Estimate the guideline amount below.
Income basis: combined gross monthly income of both parents.
Enter the income above to see the guideline estimate.
Simplified guideline estimate, interpolated from the official schedule — before health-insurance, childcare, and parenting-time adjustments. For the exact figure use the official Oklahoma calculator.
Your Case Details
Answer a few questions to see your estimated range.
Approximate gap between higher-earner and lower-earner.
Estimated Monthly Support
$840 — $1,560
State formulas vary significantly. This estimate uses national averages — your state's guidelines may produce a different number.
Editorially Reviewed — Content reviewed for accuracy using published legal research, government data, and verified court records. See our methodology
Reviewed by Leonard Goldberg, Editor · Last updated
Oklahoma uses the income-shares model: both parents' incomes are combined, the official schedule sets a basic support obligation, and each parent owes their proportional share (43 O.S. § 119). The calculator above interpolates the official schedule for a quick estimate — health-insurance, child-care, and parenting-time adjustments come on top.
How Oklahoma Calculates Child Support
Oklahoma uses the Income Shares model under 43 O.S. §§ 118-119: the parents' combined gross monthly income is looked up in the official Schedule of Basic Child Support Obligations to find a base 'Total Support Amount,' which is then split between the parents in proportion to each parent's share of the combined income (and adjusted for overnights, health-insurance premiums and work-related childcare). The dollar Schedule itself, printed under 43 O.S. § 119, is marked 'Eff. June 6, 2000' in the current official OKDHS publication; the surrounding guideline framework (parenting-time adjustment, medical-support hierarchy, credit for other children) was substantially rewritten in 2008, effective July 1, 2009 (43 O.S. §§ 118A-118I). 43 O.S. § 119.1 requires a legislative review of the guidelines and schedule at least once every four years.
Statutory basis: 43 O.S. § 119. Exact figure: official Oklahoma calculator.
Official Schedule — Excerpt
Basic support obligation at selected combined incomes (combined gross monthly income of both parents), from the official Oklahoma schedule:
| Combined income | 1 child | 2 children | 3 children |
|---|---|---|---|
| $3,300 | $532 | $771 | $908 |
| $5,000 | $654 | $943 | $1,105 |
| $7,500 | $868 | $1,249 | $1,462 |
| $10,000 | $1,097 | $1,537 | $1,807 |
Worked Example
Mother earns $2,000/month gross and Father earns $3,000/month gross — combined gross income of $5,000/month. For 2 children, the official Schedule (43 O.S. § 119) sets the Total Support Amount at $943/month. Father's share of combined income is 60% ($3,000 ÷ $5,000), so his presumptive base obligation as the paying parent is 60% × $943 = $565.80/month, before any overnight parenting-time credit or add-ons for health-insurance premiums and work-related childcare are applied.
When Courts Deviate From the Guideline
- Extreme economic hardship for either parent
- Extraordinary medical needs of a child living in the parent's home
- Children in foster care
- Extraordinary educational expenses for the child
- Extraordinary expenses for visitation/parenting-time travel
- Any other factor that makes application of the guideline amount unjust or inappropriate, provided the court makes written findings supporting the deviation (43 O.S. § 118H)
Frequently Asked Questions
Is there a cap on how much child support Oklahoma will order?
Yes. The official Schedule tops out at $15,000 in combined gross monthly income. Above that, the court starts from the $15,000-row amount (e.g., $1,961/month for two children) and adds whatever additional amount it finds appropriate based on the case (43 O.S. § 119).
What counts as income for Oklahoma child support?
Gross income includes essentially all earned income (wages, salary, commissions, military pay including BAH/BAS) and passive income (rent, pensions, trust income, Social Security retirement/disability benefits), from any source (43 O.S. § 118B). Excluded income includes TANF, SNAP, SSI, child support received for other children, adoption-assistance subsidies, foster-care payments for other children, and a child's own income.
How does shared custody or a lot of parenting time affect the amount?
Oklahoma applies a presumptive (not mandatory) parenting-time adjustment once the noncustodial parent's overnights reach roughly 121+ per year, using a variable multiplier that increases as overnights rise (per official OKDHS training materials on 43 O.S. § 118E); a custodial parent can even owe support if they have the child less than 60% of the time.
Until what age does child support last in Oklahoma, and does it cover college?
Support generally runs until the child turns 18, or until age 20 (or graduation, whichever is first) if the child is still enrolled full-time in high school at 18. Oklahoma does not require parents to pay for college; post-secondary support is only owed if the parents agree to it themselves.