Oklahoma child support calculator

How Oklahoma calculates child support

• Each parent’s gross monthly income is reduced by allowed deductions (employer FICA on self-employment income, support alimony and child support paid for others, court-ordered marital debt payments, and 75% of a hypothetical order for other children in the home) to give adjusted gross income.
• The combined adjusted income and the number of children give the base obligation from the statutory schedule (effective June 6, 2000), shared by income percentage.
• When each parent has at least 121 overnights a year, the base obligation is multiplied by 2, 1.75 or 1.5, each parent’s share is applied to the other parent’s time, and the two amounts are offset.
• Child care and the children’s health insurance premiums are shared by income. For children without insurance, cash medical support of $115 a child applies when the paying parent’s income is above 300% of the federal poverty guidelines, limited to 5% of income.

What the calculator asks

• How many children is the support for?
• Do all the children live on the same schedule?
• How many overnights a year do the children spend with you?
• How many of the children live with you?
• Your gross income per month
• How much of that is self-employment income?
• Court-ordered support alimony you actually pay from a prior case
• Court-ordered monthly payments you make on jointly acquired marital debt
• Court-ordered child support you actually pay for other children
• How many of your other children live with you more than half the time?
• The other parent’s gross income per month
• How much of the other parent’s income is self-employment income?
• Court-ordered support alimony the other parent actually pays from a prior case
• Court-ordered monthly payments the other parent makes on jointly acquired marital debt
• Court-ordered child support the other parent actually pays for other children
• How many of the other parent’s other children live with them more than half the time?
• Work or school-related child care you pay each month for these children
• Work or school-related child care the other parent pays each month
• Health insurance premium you pay each month for these children
• Health insurance premium the other parent pays each month for these children
• How many of these children have no health insurance (including children on SoonerCare)?
• Who applied for SoonerCare or other government health coverage for them?
• Is a child paid Social Security or veterans disability benefits because of a parent?
• Has the court ordered, or have you agreed to, fixed ongoing medical payments or visitation transportation costs?

It never asks for names, Social Security numbers or account numbers, and your answers are not saved.

What the estimate leaves out

• Social Security or veterans disability benefits paid for the child
• Ongoing medical payments and visitation transportation costs, when agreed or ordered
• Cases with combined income above $15,000 a month or more than six children (the court adds an amount)
• Uninsured medical expenses, which are divided by income share as they arise
• Deviations the court may order (43 O.S. 118H)

When a situation is outside what the calculator covers, it says so and points you to the official worksheet instead of guessing.

Official sources

• Oklahoma Statutes Title 43, sections 118–120, including the Schedule of Basic Child Support Obligations in section 119 (effective June 6, 2000)
• OKDHS Child Support Computation, form 03EN025E (3/23/2026)
• OKDHS Child Support Computation and Insurance Premium Worksheet Instructions, 03EN025I (3/13/2026), with the Cash Medical Income Guidelines Table effective May 1, 2025
• OKDHS Child Support Computation Excel calculator

Oklahoma Child Support Computation form and calculator (Oklahoma Human Services) →