Buchen is the seat of a local court (Amtsgericht), which belongs to the court circuit of Mosbach. Furthermore, in Buchen-Hainstadt is the headquarters of the regional office of the Archbishopric of Freiburg for the region of Odenwald-Tauber, to which belong the Deanery of Mosbach-Buchen and the home of the Bishop of Tauber.