This form is used in two ways – use this form if you are a parent who wants to apply for DOR's full child support enforcement services. To fill out the Worksheet you need to have income and expense information for both parents.Use the other parent's Financial Statement if you have it. 1. AGE, NUMBER, AND PARENTING OF CHILDREN. a. This Massachusetts Child Support Calculator uses the October 4, 2021 Massachusetts Child Support Guidelines, which are required for child support orders in MA.