An affidavit of domicile is a sworn statement signed before a notary public establishing the legal domicile of someone who has died. Domicile refers to the place you call home permanently.Your domicile is important for legal purposes such as paying taxes, voting, and claiming benefits. Country of domicile is the country where you make your permanent home. "Domicile" means a person's true, fixed and permanent home and place of habitation. An affidavit of domicile is a legal document that verifies the primary place of residency of someone after their death. You are a resident of Arizona if your domicile is in Arizona. Domicile is the place where you have your permanent home. 1. a dwelling place : place of residence : home 2. Law a : a person's fixed, permanent, and principal home for legal purposes