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. The Calculator is designed to calculate the amount of Child Support up to the statutory amount, but you can adjust the amount of the cap. To calculate alimony or spousal support you will need the following information: Your gross yearly income. Gross income is income before taxes. New York Alimony or Maintenance Calculator that calculates alimony or maintenance payable based on a state formula. Can you afford spousal support? Our calculator helps calculate what amount you'll be paying your ex-spouse, including child support payments and alimony. Monthly Child Support Calculator.