How the Oklahoma child support calculator works
This Oklahoma child support calculator follows 43 O.S. § 118D and the OKDHS Child Support Computation form.[1][2]
- Gross income: earned and passive income; self-employment income net of reasonable expenses and 7.65% for the employer share of FICA.
- Adjusted gross income: subtract prior-case alimony and support actually paid, and an allowance for other children living in the home.
- Base obligation: the schedule row at or below combined adjusted gross income, for the number of children.
- Shares: each parent’s percentage of combined income.
- Add-ons: work-related child care and the children’s health insurance premium, shared by income.
- Parenting time: from 121 overnights, the shared parenting adjustment.[1]
The Oklahoma schedule
The § 119 schedule gives the base obligation for combined adjusted gross income from $650 to $15,000 a month; the minimum is $50, and above $15,000 the court may add to the top amount.[1]
| Combined adjusted income | 1 child | 2 children | 3 children | 4 children |
|---|---|---|---|---|
| $2,000 | $366 | $531 | $626 | $691 |
| $4,000 | $580 | $837 | $982 | $1,085 |
| $6,000 | $732 | $1,054 | $1,234 | $1,364 |
| $8,000 | $905 | $1,303 | $1,526 | $1,686 |
| $10,000 | $1,097 | $1,537 | $1,807 | $1,996 |
| $12,000 | $1,251 | $1,741 | $2,049 | $2,264 |
| $15,000 | $1,372 | $1,961 | $2,305 | $2,548 |
Two cells of the statute’s schedule break the sequence (3 children at $11,300 and $14,250); this calculator uses the values in the OKDHS calculator, $1,989 and $2,241.[1][3]
Shared parenting adjustment: 121 overnights
When the noncustodial parent has at least 121 overnights a year, the combined base obligation is multiplied by 2.0 (121–131 overnights), 1.75 (132–143) or 1.5 (144 or more), divided by income share, and each parent’s share is multiplied by the other parent’s percentage of overnights; the result cannot exceed the unadjusted amount.[1]
| Parent B’s overnights | Factor | Estimated support |
|---|---|---|
| 80 | none | $658.20 |
| 121 | × 2 | $589.07 |
| 132 | × 1.75 | $457.58 |
| 144 | × 1.5 | $338.12 |
| 182 | × 1.5 | $166.80 |
Insurance, cash medical and deviations
Health insurance counts as reasonable in cost at up to 5% of the responsible parent’s gross income, and its children’s portion is shared by income; uninsured medical costs are also shared.[2] Courts can deviate only with findings, and support abates when the paying parent is incarcerated for 180 days or more.[1]
Official Oklahoma resources
Oklahoma Human Services publishes the computation form, instructions and an Excel calculator.[4]
- OKDHS Guidelines and Computation
- Oklahoma Human Services Child Support Services
- Oklahoma Statutes Title 43
Neighboring states: the Texas child support calculator, the Arkansas child support calculator and the Colorado child support calculator.
An estimate, not an order. The court decides the amount. Not legal advice; see our legal disclaimer.
Frequently asked questions
How is child support calculated in Oklahoma?
Both parents’ adjusted gross incomes are combined, the § 119 schedule gives the base obligation, child care and insurance are added, and the noncustodial parent pays their income share.
How many overnights reduce child support in Oklahoma?
121 or more for the noncustodial parent triggers the shared parenting adjustment; a parent with more than 205 overnights pays nothing.
What is the minimum child support in Oklahoma?
The schedule starts at $50 a month for combined incomes below $650.
Does Oklahoma use gross or net income?
Gross income, adjusted for alimony and support paid in other cases and for other children in the home.