Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 64N, § 2

State excise imposition; rate; payment. An excise tax is hereby imposed upon the sale of marijuana or marijuana products by a marijuana retailer to anyone other than a marijuana establishment at a rate of 10.75 per cent of the total sales price received by the marijuana retailer as a consideration for the sale of marijuana or marijuana products. The excise tax shall be levied in addition to state tax imposed upon the sale of property or services as provided in section 2 of chapter 64H of the General Laws and shall be paid by a marijuana retailer to the commissioner at the time provided for filing the return required by section 16 of chapter 62C of the General Laws.