Utah Code Ann. § 31A-19a-203
(1)
(a) Except as provided in Subsections (4) and (5), every authorized insurer and every rate service organization licensed under Section 31A-19a-301 that has been designated by any insurer for the filing of pure premium rates under Subsection 31A-19a-205(2) shall file with the commissioner the following for use in this state:
(b) An insurer shall file its rates by filing:
(ii) either of the following to be applied to pure premium rates that have been filed by a rate service organization on behalf of the insurer as permitted by Section 31A-19a-205:
(B)
(c) Every filing under this Subsection (1) shall state:
(e) A rate filing is considered filed when it has been received:
(2)
(d) If the insurer does not provide the necessary supporting information within 45 calendar days of the date on which the commissioner mailed notice under Subsection (2)(c), the rate filing may be:
(ii) returned to the insurer as:
(3) At the request of the commissioner, an insurer using the services of a rate service organization shall provide a description of the rationale for using the services of the rate service organization, including the insurer's:
(4)
(6)
(7)