Cal. Government Code § 11435.45

(a) The Department of Human Resources shall establish and charge fees for applications to take interpreter examinations and for renewal of certifications. The purpose of these fees is to cover the annual projected costs of carrying out this article. The fees may be adjusted each fiscal year by a percent that is equal to or less than the percent change in the California Necessities Index prepared by the Commission on State Finance. (b) Each certified administrative hearing interpreter and each certified medical examination interpreter shall pay a fee, due on July 1 of each year, for the renewal of the certification. Court interpreters certified under Section 68562 shall not pay any fees required by this section. (c) If the amount of money collected in fees is not sufficient to cover the costs of carrying out this article, the department shall charge and be reimbursed a pro rata share of the additional costs by the state agencies that conduct administrative hearings.