4. Every distributor or wholesaler shall be liable to pay the tax when it has sold or otherwise disposed of the tobacco product to the retail dealer or consumer. The retail dealer or consumer shall be given an invoice, receipt or other statement or memorandum stating that the tax has been paid or will be paid by the distributor or wholesaler.
The director may provide by regulation that the tax upon tobacco products, sold to a retail dealer or consumer who pays the distributor or wholesaler in installments, may be paid and the return filed on the amount of each installment.