Sec. 4. (a) Except as otherwise provided by this subsection, if a court releases an accused on personal bond on the recommendation of a personal bond office, the court shall assess a personal bond fee of $20 or three percent of the amount of the bail fixed for the accused, whichever is greater. The court may waive the fee or assess a lesser fee if good cause is shown. A court that requires a defendant to give a personal bond under Article 45.016 may not assess a personal bond fee under this subsection.

(b) Fees collected under this article may be used solely to defray expenses of the personal bond office, including defraying the expenses of extradition.

(c) Fees collected under this article shall be deposited in the county treasury, or if the office serves more than one county, the fees shall be apportioned to each county in the district according to each county's pro rata share of the costs of the office.