These guidelines are based on the combined gross incomes of the parents, giving consideration to the costs of child care, health care coverage and other unique expenses that may be required. (siplfirm.com)
Under the income shares formula, child support is based on a percentage of the combined income of both parents. (info.legalzoom.com)
The court then calculates the combined gross monthly income of the parents. (divorcefirm.net)