The child support worksheet is the calculation form that shows all of the inputs used to determine Arizona child support and produces the presumptive monthly amount. Both parents' gross incomes, parenting time days, medical insurance costs, childcare costs, and other required inputs go into the worksheet.

The worksheet is only as accurate as the information entered. Every input must be documented and current. An incorrect income figure or a wrong parenting time day count produces an incorrect result.

When there is a dispute about a child support input the worksheet may need to be run with competing figures to show the court the range of possible outcomes.