Oklahoma Statutes, prohibits any retailer to advertise or hold out or state to the public or to any customer, either directly or indirectly, that the sales tax imposed under Oklahoma Statutes, will be absorbed or assumed by such retailer, or that such tax will be paid by the vendor for the consumer or user. [See: 68 O.S. § 1361(D) ]
Okla. Admin. Code § 710:65-1-5