A Declaration of Domicile is a document you file with the court to show that you currently live in Florida and intend to remain living in Florida. If you need to file a Declaration of Domicile, a legal document that helps establish Florida residency, we're here to help!How do I prove my address in Palm Beach County? Today we will discuss some details about domicile planning in Florida. In short, a "domicile" refers to the state where you pay taxes. Filing a Declaration of Domicile is one of the simplest and most effective ways to demonstrate your intent to establish residency in Florida. According to Florida Statutes §222.17, the Affidavit of Domicile must be filed with the clerk of the circuit court in the area where you intend to reside.