Indiana Code Title 5. State and Local Administration § 5-13-6-2

Sec. 2. In all cases where law provides that any state officer collects any fee for any service rendered or examination made, and the fee collected is appropriated to pay the salary, per diem, or the expenses of any state officer for rendering the service or making the examination, the state officer shall deposit the fees, under section 1 of this chapter, and the salary, per diem, and expenses on account of the services shall be paid out of the state treasury upon an account filed and approved as provided by law.  The salary, per diem, and expenses must not exceed the fees collected and paid into the state treasury unless otherwise provided by law.