Michigan Compiled Laws, Chapter 205. Taxation § 205.52c

Sec. 2c. (1) A seller of tangible personal property is engaged in the business of making sales at retail in this state if the seller meets either of the following conditions:

(2) This section applies regardless of whether the seller has a physical presence in this state or is presumed to be engaged in the business of making sales at retail in this state under section 2b.  1 This section does not eliminate or alter the obligation of a seller that has a physical presence in this state or is presumed to be engaged in the business of making sales at retail in this state under section 2b to remit the tax levied under this act.

(3) This section applies to transactions occurring on or after October 1, 2018.

(4) A person that is a marketplace facilitator under section 2d shall include sales by marketplace sellers on its marketplace and its direct sales in determining its gross receipts under subsection (1)(a) or its number of transactions under subsection (1)(b).

(5) A person that is a marketplace seller under section 2d  2 shall include its sales through a marketplace facilitator and its direct sales in determining its gross receipts under subsection (1)(a) or its number of transactions under subsection (1)(b).

(6) Notwithstanding anything else in this section, a seller that makes no sales at retail is not required to obtain a license under this act or file returns. A seller that makes both sales at retail and sales for purposes of resale shall obtain a license under this act, file required returns, and remit tax as required by this act.

(7) As used in this section: