On November 1 of each year, the treasurer of each county shall determine those moneys in the special account that were not expended during the preceding fiscal year, and shall transfer those moneys into the general fund of the county. The board of supervisors may, by resolution, assign the treasurer's duty to determine the amount of money that was not expended to the auditor or another county officer. The county may retain an amount of that money equal to its administrative cost incurred pursuant to this section, and shall distribute the remainder pursuant to Section 1463. If the account becomes exhausted, the public entity ordering a test performed pursuant to this subdivision shall bear the costs of the test.
For purposes of this subdivision, "ability to pay" means the overall capability of the defendant to pay the additional penalty authorized by this subdivision, taking into consideration all of the following:
Ca. Pen. Code § 1463.14