C.R.S. § 39-28.8-304

(1) Every retail marijuana cultivation facility shall file a return with the department each month. The return, which shall be upon forms prescribed and furnished by the department, shall contain, among other things, the total amount of unprocessed retail marijuana sold or transferred during the preceding month and the tax due thereon. (2) Every retail marijuana cultivation facility shall file a return with the department by the twentieth day of the month following the month reported and with the report shall remit the amount of tax due. (3) and (4) Repealed.