Statement to support a domicile change. The statement must include detailed information about the domicile change.Most users should use Affidavit of Domicile (MPC 485). If you need to save a partially filled-out form, you may choose to use the alternative form:. If required to file, a copy of the income tax return you filed with any other state. Use our Affidavit of Domicile form to verify the last home address of a deceased person to speed up the inheritance process. Prepare and file a Massachusetts income tax return and mark it as "FINAL RETURN. According to the Secretary of State's office - citizen information service, there is no formal procedure for establishing a legal residence in Massachusetts. Do I need to file a New York State tax return? How do I know if I am a resident of New York State for income tax purposes?