Worksheets to calculate guideline amounts of maintenance and child support. Optional tools to help with calculations are below.Basic Calculation: DETERMINE WHICH FORMULA APPLIES BY CHECKING THE BOXES BELOW: QUESTION A: Will child support be paid for childrenof the marriage? 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. In this video, learn how to calculate maintenance (alimony) in New York. Mainteance in New York is calculated pursuant to a formula. Calculate spousal or domestic partner support; Figure out how long the support may last and how it may affect your taxes; Prepare court forms. Missing payments increase your amount owed. Use Arrears calculator to figure out balance. Alimony, often called spousal support, is a court-ordered monthly payment from one divorced spouse to the other.