Utah Code § 75A-8-121: Termination of custodianship.

The custodian shall transfer in an appropriate manner the custodial property to the minor or to the minor's estate upon the earlier of:

(1) the minor's becoming 21 years old with respect to custodial property transferred under Section 75A-8-105 or 75A-8-106;

(2) the minor's attainment of majority under the laws of this state with respect to the custodial property transferred under Section 75A-8-107 or 75A-8-108; or

(3) the minor's death.