We are an out of state prime contractor who will be performing construction services for an owner building a restaurant in the state of Utah. We normally withhold 5-10% retention from the payments to our subcontractors and the owners we work for withhold the same from payments made to our company. Must the owner have a separate account for our retainage that earns interest for the duration of the project and will we, in turn, have to maintain a separate account for the retainage we hold from payments to our subcontractor?