Unrelated business income.

Every corporation subject to a tax on unrelated business income under s. 71.26 (1) (a), if that corporation is required to file for federal income tax purposes, shall furnish to the department a true and accurate statement on or before the date on which the corporation is required to file for federal income tax purposes, not including any extension, under the Internal Revenue Code. The requirements about manner, form, and subscription under sub. (1) apply to statements under this subsection.