The following definitions apply throughout this chapter:
A person is considered to primarily rent equipment described in 532412 of the North American Industry Classification System Manual in effect on January 1, 2018, if the rental of the equipment generates the largest portion of the person's gross revenue and the person lists 532412 as the person's principal business activity code on the person's Indiana adjusted gross income tax return. In the case of a person who is an affiliate included in an Indiana consolidated or combined adjusted gross income tax return, the person may provide a copy of the federal Form 851 filed with the Internal Revenue Services that lists 532412 as the person's principal business activity code. For purposes of this chapter, the department may rely on the principal business activity code listed for the person on the person's Indiana adjusted gross income tax return of the federal Form 851, and the person may not apply any change to the listing on any amended return or subsequent return or federal form for purposes of this chapter without the approval of the department.
IC 6-6-15-2