Worksheets to calculate guideline amounts of maintenance and child support. Optional tools to help with calculations are below.Does Texas Have an Alimony Calculator? Unlike with child support, Texas doesn't have a formula for calculating spousal maintenance. New York uses a formula as a guideline for setting alimony payments, but courts can exercise considerable discretion in ordering alimony. Specific factors are determined in calculating spousal support in New York including income of both parties and the duration of marriage. Maintenance, or spousal support, is crucial when major life changes occur within family dynamics. Use our Texas maintenance calculator. In this article, learn about how spousal maintenance is ordered, the requirements to be eligible for spousal maintenance, and other important information. Step 2: Input Data into the Calculator.