"State of legal residence" (SLR) and "domicile" mean the same thing, namely your true, fixed, and permanent abode. To establish a new domicile, you need 1) a physical presence, and 2) a truthful, concurrent, intent of making the new state your permanent place of abode.In fact, its meaning can be tricky. Simply put, your domicile is your home—the state you consider your permanent place of residence. The exact definition of legal domicile varies from state to state. An affidavit of domicile is a sworn statement signed before a notary public establishing the legal domicile of someone who has died. An affidavit of domicile is a legal document that certifies the residence of a deceased person.