California Code, Revenue and Taxation Code - RTC § 34015

(a) Unless otherwise prescribed by the department, the cannabis excise tax imposed by Section 34011.2 is due and payable to the department quarterly on or before the last day of the month following each quarterly period of three months. On or before the last day of the month following each quarterly period, each cannabis retailer shall file a return for the preceding quarterly period with the department using electronic media prescribed by the department. Returns shall be authenticated in a form or pursuant to methods as may be prescribed by the department.

(b) The department may require every person engaged in the cultivation, distribution, manufacturing, or retail sale of cannabis or cannabis products, or any other person required to be licensed pursuant to Division 10 (commencing with Section 26000) of the Business and Professions Code to file, on or before the 25th day of each month, a report using electronic media prescribed by the department with respect to the person's inventory, purchases, and sales during the preceding month and any other information as the department may require to carry out the purposes of this part. Reports shall be authenticated in a form or pursuant to methods as may be prescribed by the department.

(c) The department may examine the books and records of any person licensed, or required to be licensed, pursuant to Division 10 (commencing with Section 26000) of the Business and Professions Code, as it may deem necessary in carrying out this part.

(d) This section shall become operative on January 1, 2023.