Complete Form ET-141 if it is claimed that the decedent was not domiciled in New York State at the time of death. Generally, you must file a New York State resident income tax return if you are a New York State resident and meet any of the following conditions.How to fill out the New York Estate Tax Domicile Affidavit Instructions? Use our Affidavit of Domicile form to verify the last home address of a deceased person to speed up the inheritance process. Gov or submit in-person at the NYC Comptroller's Office. Have mail forwarded to new home address. File a declaration of domicile in the new state, if permitted. Florida is among the states that provide for filing such a declaration.