Worksheets to calculate guideline amounts of maintenance and child support. Optional tools to help with calculations are below.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. The New York government website offers an online calculator that can help you determine how much child support you will be responsible for. OCSS services include assistance with locating noncustodial parents, establishing parentage, establishing child support and medical support orders. New York Alimony or Maintenance Calculator that calculates alimony or maintenance payable based on a state formula. Once you input the income and deduction information, the Calculator will automatically figure out the guideline amount of spousal support. The first step in calculating child support is determining the parents' combined gross income. That is the purpose of child support. If your parents are separated or divorced, each parent should fill out the calculator with their own information.