Unlike child support calculations in Michigan, there is no set formula that judge must use to calculate the amount and duration of spousal support. 1.01. Supplemental Material.1.01(A) This supplement contains the Michigan Child Support Formula's most current economic data and supporting materials. The amount of child support is calculated using the Michigan Child Support Formula which takes a variety of different things into account. Child Support Michigan uses a formula to calculate child support based on each parent's income, the number of children, and other factors. No statutory formulas control the amount of spousal support in Michigan. The court has discretion in determining the amount and length of any payments awarded. Bring the form to your court hearing along with the completed Uniform Child Support Order. No information is available for this page. There isn't one answer when it comes to the calculation of spousal support in Macomb County, Michigan.