Ark. Code Ann. § 26-55-246: Posting price of fuel plus tax

Distributors and all other persons selling motor fuel may add the amount of the tax to the price of the motor fuel sold by them and shall state the rate of the tax separately from the price of the motor fuel on all price display signs, in letters or figures of the same size and color, sales or delivery slips, bills, and statements which advertise or indicate the price of motor fuel.