Is There a Formula to Calculate Whether I Am Entitled to Receive Alimony or Whether I Will Be Required to Pay Alimony? This Child Support Guidelines Calculator is for informational purposes only and is not a guarantee of the amount of child support that will be ordered.The amount of child support that either parent may have to pay following a divorce is based on several factors, and one of those factors is alimony. Parents must financially support their child until the child turns 21 years old or is emancipated. Worksheets to calculate guideline amounts of maintenance and child support. Optional tools to help with calculations are below. If you are legally married and you are not living with your spouse and not already in the process of divorce, you can seek spousal support in Family Court. This worksheet takes into account the parents' combined income and the number of children being supported. Use the alimony calculator below to estimate spousal maintenance in Wisconsin. Family Support Program - Assists Ontario Works recipients to obtain child and spousal support payments through support orders and agreements.