Domicile refers to the place you call home permanently. Your domicile is important for legal purposes such as paying taxes, voting, and claiming benefits."State of legal residence" (SLR) and "domicile" mean the same thing, namely your true, fixed, and permanent abode. Domicile is one of those words that courts and lawyers toss around and expect people to understand. In fact, its meaning can be tricky. In the context of U.S. immigration, it means the country where you live, work, pay taxes, and intend to remain for the foreseeable future. Basically the terms "domicile" and "legal residence" refer to the same place – the state you consider your permanent home. The common question is, "What does domicile mean? This guide will explain how to prove domicile when filling out Form I-864 ("Affidavit of Support"). Consular processing support without the high price tag.