(a) A seller who receives or collects tax holds the amount received or collected in trust for the benefit of this state and has a fiduciary duty to remit to the comptroller the amount of tax received or collected.
(b) A seller shall furnish the purchaser with an invoice, bill of lading, or other documentation as evidence of the number of gallons received by the purchaser.
(c) A seller who receives a payment of tax may not apply the payment of tax to a debt that the person making the payment owes for diesel fuel purchased from the seller.
(d) A person required to receive or collect a tax under this chapter is liable for and shall pay the tax in the manner provided by this chapter.
Official text of the Texas Tax Code as published by the Texas Legislative Council.