Calculate your potential alimony payments with help from the tools on our Massachusetts divorce attorneys' website. See how parenting time affects the total.Enter your income and marriage date to calculate the amount and duration of general term MA alimony for your case. Includes post-tax report. We have updated our online calculator below. An auto-calculating version created in Microsoft Excel is also available for download. In Massachusetts, child support is based on the non-custodial parent's gross weekly income and the number of children to be supported. Section II of Massachusetts child support guidelines covers factors the parties and the Court must consider when determining child support. This calculator calculates the alimony as identified in MGL Chapter 208 Section 53b: "Except for reimbursement alimony or circumstances warranting deviation. Use the Massachusetts Child Support Calculator to estimate your child support obligations quickly and accurately.