Income levels used for child support


I know we went by gross income and it came up pretty close to what the DSS came back to us with. To my knowledge they don’t figure in dividends and interest


In using the NC child support calculators, what gross income figure is used? Total Gross earnings i.e before taxes 401K’s pre tax insurance etc or Total w2-gross earnings? Also how do you calculate interest or other dividends gotten from investments, etc when those are join income items in the case when one parent is remarried?