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. New York Alimony or Maintenance Calculator that calculates alimony or maintenance payable based on a state formula. The formula uses the parties' incomes and salary, as well as whether or not child support is being paid to perform a calculation. Figuring out the numbers during your divorce can add a lot of stress to an already stressful time. This maintenance calculator can help. Child support obligations will be calculated using something called the "Income Shares Method". DO NOT fill out the rest of this form unless the judge tells you complete it. In the new law, child support is determined using a shared income model.