Worksheets to calculate guideline amounts of maintenance and child support. Optional tools to help with calculations are below.New York uses a formula as a guideline for setting alimony payments, but courts can exercise considerable discretion in ordering alimony. Basic Calculation: DETERMINE WHICH FORMULA APPLIES BY CHECKING THE BOXES BELOW: QUESTION A: Will child support be paid for childrenof the marriage? New York courts use standardized guidelines to arrive at a suggested amount of spousal maintenance. Judges can deviate from the amount when appropriate. Specific factors are determined in calculating spousal support in New York including income of both parties and the duration of marriage. To calculate alimony or spousal support you will need the following information: Your gross yearly income. Gross income is income before taxes. A child support calculator helps you estimate what you might pay or receive.