(1)

(a) Except as otherwise provided in subsection (1)(b) of this section, on and after July 1, 2017, all retail sales of marijuana upon which the retail marijuana sales tax is imposed pursuant to section 39-28.8-202 are exempt from taxation under part 1 of this article 26 by the state or by any special district or other limited purpose governmental entity that was not levying sales tax on retail sales of marijuana under part 1 of this article 26 before July 1, 2017. Notwithstanding any other law to the contrary, any special district or other limited purpose governmental entity that was levying sales tax on retail sales of marijuana under part 1 of this article 26 before July 1, 2017, retains its authority to continue levying sales tax upon retail sales of marijuana under this article 26.

(b) Any metropolitan district that levies sales tax as authorized by section 32-1-1106 (1), health assurance district that levies sales tax as authorized by section 32-19-112 (1), or health service district that levies sales tax as authorized by section 32-19-112 (1) may levy sales tax on retail sales of marijuana upon which the retail marijuana sales tax is imposed pursuant to section 39-28.8-202 regardless of whether or not the district was levying sales tax on such sales before July 1, 2017.

(b) Any metropolitan district that levies a general uniform sales tax as authorized by section 32-1-1106 (1), health assurance district that levies a general uniform sales tax as authorized by section 32-19-112 (1), or health service district that levies a general uniform sales tax as authorized by section 32-19-112 (1) may levy its general uniform sales tax on retail sales of marijuana upon which the retail marijuana sales tax is imposed pursuant to section 39-28.8-202 regardless of whether or not the district was levying any sales tax on such sales before July 1, 2017.

(2) The governing body of any special district or limited purpose governmental entity that was levying sales tax upon retail marijuana sales before July 1, 2017, and the governing body of any metropolitan district, health assurance district, or health service district that is authorized by subsection (1)(b) of this section to levy sales tax on retail marijuana sales shall determine whether the levying of such sales tax complies with the Colorado constitution and applicable decisions of the Colorado supreme court and Colorado court of appeals and, if the governing body of any such special district or limited purpose governmental entity determines that additional voter approval is required to levy sales tax upon retail sales of marijuana, the special district or limited purpose governmental entity shall not resume levying sales tax upon such sales until voter approval is obtained.

(2) The governing body of any special district or limited purpose governmental entity that was levying sales tax upon retail marijuana sales before July 1, 2017, and the governing body of any metropolitan district, health assurance district, or health service district that is authorized by subsection (1)(b) of this section to levy a general uniform sales tax on retail marijuana sales shall determine whether the levying of such sales tax complies with the Colorado constitution and applicable decisions of the Colorado supreme court and Colorado court of appeals and, if the governing body of any such special district or limited purpose governmental entity determines that additional voter approval is required to levy sales tax upon retail sales of marijuana, the special district or limited purpose governmental entity shall not resume levying sales tax upon such sales until voter approval is obtained.