This calculator calculates the alimony as identified in MGL Chapter 208 Section 53b: "Except for reimbursement alimony or circumstances warranting deviation. These forms are effective October 4, 2021.To get an understanding of how much Massachusetts alimony you should likely pay or receive, simply fill in the information on the link here. Calculate your potential alimony payments with help from the tools on our Massachusetts divorce attorneys' website. See how parenting time affects the total. The amount of alimony should generally be no more than the receiving spouse needs or 30–35 percent of the difference between the parties' gross incomes. We have updated our online calculator below. An auto-calculating version created in Microsoft Excel is also available for download. Mavrides Law, home of Boston's best divorce laywers, offers both a free alimony calculator and child support calculator on their website. Unlike many other states, Massachusetts does not provide an official, online calculator for child support.