How child support is calculated in Oklahoma
What decides the amount, where to get the real number, and the extra rules.
Checked against official sources: Oct 25, 2026.
Short answer
Oklahoma uses the income-shares model: both parents' incomes count, and each parent pays a share of the child's support. Support is figured from both parents' combined gross monthly income. The state schedule gives the total support for that income and number of children, and each parent pays his or her percentage share.
- Model
- Income shares
- Official calculator
- Official Oklahoma child support calculator
The official Oklahoma calculator
Support is figured from both parents' combined gross monthly income. The state schedule gives the total support for that income and number of children, and each parent pays his or her percentage share. Health insurance, child care and a parenting-time adjustment (121 or more overnights a year) can change the amount.
Law: 43 O.S. 118-119 (118B imputed income, 118D computation, 118E parenting time, 119 schedule)
We don't estimate Oklahoma's amount here: its formula uses both parents' incomes and other facts, and a home-made number could mislead you. The official tool gives the real starting number:
What goes into support in Oklahoma
Support is figured from both parents' combined gross monthly income. The state schedule gives the total support for that income and number of children, and each parent pays his or her percentage share. Health insurance, child care and a parenting-time adjustment (121 or more overnights a year) can change the amount.
Law: 43 O.S. 118-119 (118B imputed income, 118D computation, 118E parenting time, 119 schedule)
What the model means
In an income-shares state, both parents' incomes are added together. A table gives the support for that combined income, and each parent pays the share that matches their part of the income.
Every state must have one set of child support guidelines, review them at least every 4 years, and use the guideline amount unless a written finding says it would be unjust.
Law: 45 CFR 302.56
Health insurance in Oklahoma
Every new or changed order must include medical support: health insurance, cash medical support, or both. Insurance counts as reasonable in cost if the covering parent's share of the premium is no more than 5% of that parent's gross income.
Law: 43 O.S. 118F
The low-income rule in Oklahoma
The schedule starts at $50 a month for very low combined incomes. Income can be imputed at minimum wage for at least 25 hours a week when a parent is unemployed or underemployed.
State guidelines may not treat time in jail or prison as choosing not to work, when support is set or changed.
Law: 45 CFR 302.56(c)(3)
In nearby states
From income to an order in Oklahoma
Find the income numbers
Recent pay stubs and last year's tax return are the usual starting point.
Use the official tool
Get the guideline amount from Official Oklahoma child support calculator.
Include other costs
The child's health insurance and child care costs can change the amount.
Get an order
Only a court or the agency can set the amount. Open a case with Oklahoma Human Services, Child Support Services (CSS) ((405) 522-2273) · Apply online
Ask for free help
Ask for free help: Legal Aid Services of Oklahoma.
Where to get free help in Oklahoma
Questions about the Oklahoma guidelines
How does Oklahoma figure child support?
Support is figured from both parents' combined gross monthly income. The state schedule gives the total support for that income and number of children, and each parent pays his or her percentage share. Health insurance, child care and a parenting-time adjustment (121 or more overnights a year) can change the amount.
Does Oklahoma have an online support calculator?
What if the paying parent has a low income in Oklahoma?
The schedule starts at $50 a month for very low combined incomes. Income can be imputed at minimum wage for at least 25 hours a week when a parent is unemployed or underemployed.
How are medical costs shared in Oklahoma?
Every new or changed order must include medical support: health insurance, cash medical support, or both. Insurance counts as reasonable in cost if the covering parent's share of the premium is no more than 5% of that parent's gross income.
Keep reading about Oklahoma
Sources
- 43 O.S. 118-119 (118B imputed income, 118D computation, 118E parenting time, 119 schedule)
- OKDHS Child Support Services
- Application for Services Information
- Quadrennial Review
- Enforce a Child Support Order
- Paternity Establishment Process
- Oklahoma Statutes Title 43 (Legislature, complete title)
Last checked: Oct 25, 2026.