This form must be used to identify a Decedent's surviving spouse, children and heirs at law. If a taxpayer or spouse has passed away, you need to enter the date of death of the taxpayer or spouse in the Federal Basic Info section of the program.Section 15A: Death of registered owner of motor vehicle; presumption of joint ownership in surviving spouse. A surviving spouse in Massachusetts has a right to receive a certain portion of your estate no matter what your will says. 1. Complete this application. 2. Go to an authorized Massachusetts insurance agent and have them fill out, stamp and sign an RMV-1. In this guide of Massachusetts inheritance laws, we break down intestate succession, probate, taxes, what makes a will valid and more. You may be eligible to reduce all or a portion of the taxes assessed on your domicile if you meet the qualifications for one of the personal exemptions. Please fill out and complete the enclosed application, making sure to state your legal residence as well as your property location. How do I remove a deceased spouse from my deed in Massachusetts?