Okla. Stat. tit. 43, § 43-118: Child support guidelines

A. There shall be a rebuttable presumption in any judicial or

administrative proceeding for the award of child support, that the

amount of the award which would result from the application of the

following guidelines is the correct amount of child support to be

awarded.

B. The Schedule of Basic Child Support Obligations assumes that

all families incur certain child-rearing expenses and includes in

the basic child support obligation an average amount to cover these

expenses for various levels of the parents' combined income and

number of children, comprised of housing, food, transportation,

basic public educational expenses, clothing, and entertainment.