(a) Except as provided by Subsection (c), each deposit made in the county treasury must be made on a deposit warrant. The deposit warrant authorizes the county treasurer to receive the amount stated in the warrant. The warrant must state the purpose for which the amount is received and the fund to which it is to be applied.
(b) The county treasurer shall keep the original deposit warrant. The county treasurer shall provide the county clerk or the county auditor with duplicate deposit warrants or a written report of all deposit warrants received that contains detailed information about each warrant. On the request of a person making a deposit, the county treasurer may provide a duplicate deposit warrant to the person. If the county has a county auditor, the auditor shall enter the amount in the auditor’s books, charging the amount to the county treasurer and crediting the person who deposited the amount. The treasurer may receive money only through this procedure except as provided by Subsection (c).

(c) In a county with more than 2.2 million inhabitants, the county clerk is relieved of all duties under Subsections (a) and (b). In any other county that has the office of county auditor, the commissioners court by order may relieve the county clerk of all duties under Subsections (a) and (b). If the county clerk is relieved of duties, the county treasurer shall receive all deposits that are made in the county treasury. The county treasurer shall provide the county auditor with duplicate warrants or a written report of all warrants that contains detailed information about each warrant. On the request of a person making a deposit, the county treasurer may provide a duplicate warrant to the person. The county auditor shall prescribe a system, not inconsistent with this subsection, to be used by the county treasurer for receiving and depositing money.