Oklahoma Child Support Calculator
Oklahoma's child support guidelines are an income-shares model in Title 43 of the Oklahoma Statutes, §§ 118 to 119. Both parents' gross incomes are combined and matched to the Schedule of Basic Child Support Obligations, which has been in force since June 2000. This calculator follows the Oklahoma Human Services Child Support Computation form, including the parenting time adjustment and the shares of child care and health insurance.
Earned and passive income before taxes, less any deductions you qualify for
Earned and passive income before taxes, less any deductions you qualify for
Out of 365; the parenting time adjustment starts at 121 for the parent with fewer
Shared by income share
Shared by income share
Cost for the children in this case only; shared by income share
Cost for the children in this case only; shared by income share
Estimated monthly child support
Parent A (pays support)
Annual amount
Who pays
| Step | Amount |
|---|---|
| Combined monthly gross income | $8,000.00 |
| Parent A income share 62.5% of combined income | 0.63 |
| Base monthly obligation (§ 119 schedule) | $905.00 |
| Parent A's share of the base obligation | $565.63 |
| Monthly child support Parent A pays | $565.63 |
This is a guideline estimate under 43 O.S. §§ 118 to 118I, 119 for informational purposes only — it is not legal advice and not a substitute for the official worksheet or a family-law attorney. Courts can deviate from guideline amounts based on statutory factors, and inputs like income determination or imputed income are ultimately decided by the court.
Oklahoma child support at a glance
| Model | Income shares (monthly gross income) |
| Schedule range | Up to $15,000 combined monthly income |
| Parenting time adjustment | From 121 overnights a year |
| Adjustment factors | 2 at 121–131, 1.75 at 132–143, 1.5 at 144 or more |
| No support paid above | 205 overnights |
| Schedule in effect since | June 2000 |
Gross income and the schedule
Gross income includes earned and passive income from almost any source; means-tested benefits, child support received for other children and the child's own income are excluded. Courts may subtract alimony paid in a prior case, ordered marital debt payments and amounts for other children; this calculator takes income as entered. Combined income is matched to the row at or below it in the schedule, which starts at $50 for combined income under $650 and rises in $50 steps to $15,000. Above $15,000 a month ($180,000 a year) the $15,000 amount applies plus any amount the court adds.
Parenting time adjustment
When the parent with fewer overnights has at least 121 a year, the combined obligation is multiplied by a factor (2 at 121–131, 1.75 at 132–143, 1.5 at 144 or more overnights). Each parent's income share of that amount is multiplied by the other parent's percentage of the 365 overnights, and the larger result is reduced by the smaller. The result can never be more than the amount without the adjustment, and a parent with more than 205 overnights pays no child support. The adjustment is presumptive, so a court can refuse it when the extra time does not bring extra spending.
Child care and health insurance
Work, job search and school-related child care and the premium for the children's health coverage are divided in proportion to income and added to the base obligation. The paying parent is credited for what they pay directly. Coverage is reasonable in cost when the share of the premium does not exceed a set percentage of the covering parent's gross income; without reasonable coverage the court orders cash medical support, which this calculator does not compute.
Frequently asked questions
Does Oklahoma use gross or net income for child support?
Gross income. Wages, self-employment profit, bonuses, rent, interest, pensions, Social Security and unemployment benefits all count. Self-employed parents deduct the employer share of FICA, and courts can deduct prior alimony actually paid, ordered marital debt payments and support for other children.
How many overnights change child support in Oklahoma?
121 overnights a year. From there the combined obligation is multiplied by a factor that falls as time rises (2 at 121–131, 1.75 at 132–143, 1.5 at 144 or more overnights) and the parents' shares are cross-multiplied by time. With equal time and equal incomes, support is $0.
Who pays child support with 50/50 custody in Oklahoma?
Usually the parent with the higher income, because after the cross-multiplication that parent owes the larger amount. The difference is paid as support, and a parent with more than 205 overnights never pays.
What if combined income is above $15,000 a month?
The schedule stops at $15,000 of combined monthly income ($180,000 a year). Above it, support is the amount for $15,000 plus an additional amount set by the court. The same applies to more than 6 children, using the six-child column.
Has the Oklahoma child support schedule changed recently?
No. The schedule in 43 O.S. § 119 has been in effect since June 2000. The Legislature's Judiciary Committees review it at least every four years, and Oklahoma Human Services has proposed extending it above $15,000 for a future session.
What does this calculator leave out?
Self-employment tax, deductions for prior alimony, marital debt and other children, imputed income, Social Security or veterans benefits paid for the child, ongoing medical and visitation transportation costs, cash medical support, split and third-party custody, and deviations. Oklahoma Human Services publishes the official computation form and an Excel calculator.