Wiesbaden
Finanzamt Wiesbaden
Abraham-Lincoln-Park 3, 65189 Wiesbaden
Send a written request with two copies to get German tax residence confirmed, and phone before any visit.
Use the appropriate official foreign or German form. Identify the treaty country and requested period or date, and prepare two copies. Check any additional foreign-use certification separately. Keep your current tax correspondence available for enquiries.