Mich. Comp. Laws § 333.27601

Sec. 601. (1) A tax is imposed on each provisioning center at the rate of 3% of the provisioning center's gross retail receipts. By 30 days after the end of the calendar quarter, a provisioning center shall remit the tax for the preceding calendar quarter to the department of treasury accompanied by a form prescribed by the department of treasury that shows the gross quarterly retail income of the provisioning center and the amount of tax due, and shall submit a copy of the form to the department. If a law authorizing the recreational or nonmedical use of marihuana in this state is enacted, this section does not apply beginning 90 days after the effective date of that law. (2) The taxes imposed under this section shall be administered by the department of treasury in accordance with 1941 PA 122, MCL 205.1 to 205.31, and this act. In case of conflict between the provisions of 1941 PA 122, MCL 205.1 to 205.31, and this act, the provisions of this act prevail.