The Department of Revenue in its discretion may, on petition by any interested person, issue a declaratory ruling with respect to the applicability to any person, property or state of facts of any rule or statute enforceable by it. The department shall prescribe by rule the form, content and procedure for submission, consideration and disposition of such petitions. Full opportunity for hearing shall be afforded to interested parties. A declaratory ruling shall bind the department and all parties to the proceedings on the state of facts alleged, unless it is altered or set aside by a court. A ruling shall be subject to review in the Oregon Tax Court and Supreme Court in the manner provided by ORS § 305.445. [Formerly 306.710; 1989 c.414 § 2]