Wis. Admin. Code Department of Revenue Tax 2.09
Written requests for approval of substitute forms should be mailed to Wisconsin Department of Revenue, Processing Forms Approval, P.O. Box 8903, Madison, WI 53708-8903.
Section Tax 2.09 interpretss. 71.03(6) (a), 71.20(1), 71.24(1) and 71.44(1) (a), Stats.