Massachusetts cities and towns take a set amount off the property tax on the home you live in if you are a veteran with a qualifying disability or decoration, or the spouse, surviving spouse or Gold Star parent of one. Eight separate clauses of the statute set the amount, ranging from $400 to a full exemption. You can only receive one exemption in a fiscal year, and if you qualify under more than one clause you get the one worth the most.
Apply through the assessor in the Massachusetts city or town where the property is, not through a state office. You have to apply again every year.
Your discharge paperwork, your VA disability rating or award documentation, proof that you occupy the property as your domicile, and proof of the Massachusetts residency period you are relying on.