Okla. Admin. Code § 710:65-7-3
Sales tax is paid by the consumer/user to the vendor as trustee for the state. Any person required to collect sales tax as a trustee for the state will be held personally liable for the sales tax due.
The decision as to whether an individual is personally liable for sales tax shall be made on an "individual case" basis. The standard to be applied is that of determining liability for payment of federal withholding tax pursuant to the Internal Revenue Code of 1986, as amended, or regulations promulgated pursuant to same. Once it is finally determined that a person is liable , a tax warrant which has the force and effect of a judgment or lien will be filed against that person individually for the full amount of the liability, i.e. tax, interest and penalty. [ See: 68 O.S. § 253 ]
Okla. Admin. Code § 710:65-7-3