Utah Code Ann. § 31A-22-428
(2)
(a) Except as provided in Subsection (4), for the period beginning on the date of death and ending the day before the day described in Subsection (3)(b), interest under Subsection (1) shall accrue at a rate no less than:
(3)
(b) Interest accrues under Subsection (3)(a) beginning with the day that is 31 days from the latest of:
(ii) the day on which the insurer receives sufficient information to determine:
(iii) the day on which:
(4) A court of competent jurisdiction may require payment of interest from the date of death to the day on which a claim is paid at a rate equal to the sum of: