This page will help you calculate the figures a New York judge would consider in determining how much should be paid in maintenance and child support. Worksheets to calculate guideline amounts of maintenance and child support.Optional tools to help with calculations are below. New York Alimony or Maintenance Calculator that calculates alimony or maintenance payable based on a state formula. Use this worksheet when one parent (or a third party) has primary physical custody of all of the children for whom support is being determined. This Child Support Guidelines Calculator is for informational purposes only and is not a guarantee of the amount of child support that will be ordered. This calculator determines the value of child support to be paid based on income, days the children spend in your custody, and other child-related expenses. Calculators cannot determine your right to alimony. DETERMINE WHICH FORMULA APPLIES BY CHECKING THE BOXES BELOW: QUESTION A: Will child support be paid for childrenof the marriage? Child Support Calculator.