Idaho Code § 39-254

All amounts payable to local registrars under the provisions of this chapter shall be paid by the respective treasurers of the incorporated city or county in which the registration district is situated out of the general fund of such incorporated city or county, upon certification by the state registrar. The state registrar shall certify to the auditors of the various counties and cities, not less than semiannually, or at such other regular times as may be deemed expedient, the names of the local registrars and the amounts due each at the rates fixed by the board by regulations promulgated pursuant to section 39-251, Idaho Code.