Utah Code § 20A-11-505.7
§ 20A-11-505.7. Separate account for contributions for registered political party -- Anonymous contributions to registered political party or county political party.
(1) A registered political party shall deposit a contribution received in one or more separate campaign accounts in a financial institution. (2) A registered political party may not deposit or mingle a contribution received into a personal or business account. (3) A registered political party or county political party may not expend a contribution for political purposes or a political issues expenditure if the contribution: (a) is cash or a negotiable instrument; (b) exceeds $50; and (c) is from an unknown source.