Child support · OK
Oklahoma child support calculator
The 43 O.S. § 119 schedule, the 121-overnight adjustment with its three multipliers, and the add-ons, on your two gross incomes.
Rules read on official Oklahoma pages on · Checked by Radif Partners · How we calculate
- Model
- Income shares
- Income counted
- Adjusted gross
- Shared parenting
- No fixed formula
- 1 child, $5,000 / $3,000
- $566
- a month, rules of June 6, 2000
In Oklahoma a parent earning $4,000 a month gross, with the other parent at $2,000, owes about $703 a month for two children under the schedule of 43 O.S. § 119, before child care and medical support. The schedule is read on combined gross income in $50 rows, each row applying from its amount up, and it has not been rewritten since June 6, 2000. Time with the paying parent changes nothing until 121 overnights a year. From that night the combined amount is multiplied by 2, then 1.75 from 132 nights and 1.5 from 144, and each parent's share is weighted by the other parent's time: at 144 nights the same parent pays $430. A parent with more than 205 overnights never pays support, and the adjusted figure can never exceed the unadjusted one.
Guideline child support in Oklahoma, per month
$566
$6,788 a year
| Combined gross monthly income | $8,000 |
| Schedule amount, 1 child | $905 |
| Paying parent’s share of income | 62.5% |
Estimate under the Oklahoma guideline as published, from the incomes you enter. Deviations, imputed income, other children and the judge's findings can change the order. How this is calculated.
Three multipliers, then a hard stop at 205
Section 118E of Title 43 is built in steps. Below 121 overnights, nothing. Between 121 and 131 the combined amount doubles before being split, because two homes each carry rent, food and transport; the factor falls to 1.75 up to 143 nights and to 1.5 from 144 on. Each parent's slice of the multiplied amount is then multiplied by the share of the year the children spend with the other parent, and the two results are offset. The adjustment is presumptive but not automatic: a court may refuse it when the extra nights do not create extra spending.
| Overnights with the paying parent | Monthly support, two children |
|---|---|
| 120 | $703 |
| 121 | $703 |
| 131 | $649 |
| 132 | $563 |
| 143 | $507 |
| 144 | $430 |
| 182 | $266 |
For this family the first band does nothing: doubling the amount and weighting it by time gives more than the unadjusted $703, and the statute caps the result at the unadjusted figure. The savings arrive when the multiplier drops. At 132 nights the order falls to $563, at 144 to $430. The steps are uneven, so a parenting plan a few nights below a band edge can cost real money every month. Section 118E also treats exercising fewer nights than ordered as a material change, and the court can turn the support underpaid into a judgment.
An old schedule with an odd cell
The table runs from a first line of $50 for any number of children to $15,000 of combined income, where two children cost $1,961. Above that the court adds an amount of its own choosing to the $15,000 figure, and the calculator stops at the top line. Very low incomes all land on the floor: $400 and $200 with three children give $33 a month for the paying parent.
Reading the statute line by line turns up two cells that break the pattern. At $11,300 the three-child column shows $1,898, below the $1,984 printed for $11,250 and far from the $1,993 of $11,350. The Oklahoma Human Services spreadsheet computes about $1,989 for that cell, which suggests a transposed digit. The calculator copies the statute as published; a family in that income band may want the worksheet checked.
Who runs the numbers
Oklahoma Human Services, Child Support Services, publishes the computation form and an Excel calculator. For the way neighboring states handle shared time, compare Texas and Kansas.
The Oklahoma guideline this calculator applies
| Rule | Oklahoma |
|---|---|
| Model | Income shares, combined gross monthly income schedule (43 O.S. § 119) |
| Income counted | Adjusted gross income: gross income minus the deductions the guideline allows. |
| Official schedule | $50 to $15,000 of combined income a month, 289 rows |
| Shared parenting | No overnight formula in the calculator (see the rule below) |
| In force since | June 6, 2000 |
Monthly support for one paying parent, the other parent without income
| Paying parent’s monthly income | 1 child | 2 children | 3 children | 4 children |
|---|---|---|---|---|
| $2,000 | $366 | $531 | $626 | $691 |
| $3,000 | $505 | $733 | $864 | $955 |
| $4,000 | $580 | $837 | $982 | $1,085 |
| $5,000 | $654 | $943 | $1,105 | $1,222 |
| $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 |
| $12,500 | $1,272 | $1,778 | $2,091 | $2,311 |
| $15,000 | $1,372 | $1,961 | $2,305 | $2,548 |
| $20,000 | $1,372 | $1,961 | $2,305 | $2,548 |
How the amount is set. The schedule heading reads 'If Combined Gross Monthly Income is equal to or above' each row amount (43 O.S. § 119(A)), so the row at or below the income applies. Rows run $650 to $15,000 in $50 steps, preceded by a $50 row. source
Income. Gross income = earned and passive income from any source (43 O.S. § 118B); self-employment income is net of ordinary and reasonable expenses with a 7.65% deduction. Adjusted gross income adds Social Security paid to the child on the parent's account and deducts support alimony actually paid in a prior case and the deduction for other qualified children (43 O.S. § 118A(1), § 118C). Imputed income may be minimum wage for not less than 25 hours per week (43 O.S. § 118B).
Above the table. Above $15,000 combined gross monthly income: the amount for $15,000 plus an additional amount determined by the court (43 O.S. § 119(B)). More than six children: amount for six plus an amount set by the court (43 O.S. § 119(C)).
Parenting time. Parenting time adjustment when the noncustodial parent has at least 121 overnights a year (43 O.S. § 118E(A)(1)). The combined base obligation is multiplied by 2 (121-131 overnights), 1.75 (132-143) or 1.5 (144 or more), split by income shares, each share multiplied by the other parent's percentage of overnights (overnights/365) and offset; the higher owes the difference (§ 118E(D)(2)-(5)). No support is payable by a parent with more than 205 overnights, and the result may not exceed the unadjusted amount (§ 118E(D)(5)). The adjustment is presumptive, not mandatory (§ 118E(C)).
Child care and health care. Actual annualized child care costs for employment, job search or school are allocated in the same proportion as base support and added to the order (43 O.S. § 118G). Health coverage is reasonable in cost if the child's pro rata premium does not exceed 5% of the responsible parent's gross income; cash medical support may not exceed the lesser of the pro rata share of actual medical expenses or 5% of the obligor's gross monthly income (43 O.S. § 118F(D) and the cash medical provision of § 118F). Child care and medical support are added to base support (43 O.S. §§ 118F, 118G); transportation costs between homes may be divided by income (43 O.S. § 118D(G)).
Low incomes. No separate self-support reserve in the statute; the schedule's first row sets $50 per month for any number of children below $650 combined income (43 O.S. § 119(A)). A deviation may not seriously impair the obligee's ability to provide basic necessities for the children (43 O.S. § 118H(A)).
When support ends. Support runs until 18; a child regularly enrolled and attending high school full time is supported until graduation or age 20, whichever comes first, with no further order needed (43 O.S. § 112(E)). Support for an adult disabled child is possible under 43 O.S. § 112.1A. source
The state also runs its own official child support calculator; use it, or the court's worksheet, for a filing.
Worth knowing in Oklahoma
- Oklahoma's schedule is based on combined gross (not net) income and was last amended in 2000 (Laws 2000, c. 345, emerg. eff. June 6, 2000) (43 O.S. § 119). source
- The Senate and House Judiciary Committees must review the guidelines and schedule at least every four years using data from the Title IV-D program in the Department of Human Services (43 O.S. § 119.1). source
- The parenting time adjustment uses a sliding multiplier (2, 1.75 or 1.5) by overnight band starting at 121 overnights (43 O.S. § 118E(D)(2)). source
- Child support is computed the same way whether custody is designated sole or joint (43 O.S. § 118D(E)); in split custody each parent's obligation is computed and the larger pays the difference (§ 118D(D)). source
- Oklahoma Human Services Child Support Services publishes an official Excel child support computation calculator and form 03EN025E. source