Domicile refers to the place you call home permanently. Your domicile is important for legal purposes such as paying taxes, voting, and claiming benefits.This means the county where the Decedent lived and considered their primary home address before they died. Domicile is a fancy word for the place where you live. Whether it's a mansion on 5th Avenue or a tee-pee in the desert, if you live in it, it's your domicile. Domicile is a legal term used to refer to the permanent or legal address (place or country) of an individual. Simply put, your domicile is your home—the state you consider your permanent place of residence. A domicile is a place you claim as your permanent home, and it affects the laws, benefits and taxes that apply to you. 1. a dwelling place : place of residence : home 2. Law a : a person's fixed, permanent, and principal home for legal purposes