Section R746-320-8 - Billing AdjustmentsA. Definitions -- 1. A "backbill" is that portion of a bill, other than a levelized bill, which represents charges not previously billed for service that was actually delivered to the customer before the current billing cycle.2. A "catch-up bill" is a bill based on an actual reading provided after one or more bills based on estimated or customer readings. A catch-up bill which exceeds by 50 percent or more the bill that would have been provided under a utility's standard estimation program is presumed to be a backbill.B. Notice -- The account holder may be notified by mail, by phone, or by a personal visit, of the reason for the backbill. This notification shall be followed by, or include, a written explanation of the reason for the backbill that shall be received by the customer before the due date and be sufficiently detailed to apprise the customer of the circumstances, error or condition that caused the underbilling, and, if the backbill covers more than a 24-month period, a statement setting forth the reasons the utility did not limit the backbill under Subsection R746-320-8(D).C. Limitations on Providing a Backbill -- A utility shall not provide a backbill more than three months after the utility actually became aware of the circumstance, error, or condition that caused the underbilling and the correct calculation to be used in the backbill has been determined. This limitation does not apply to fraud, theft of service, and denial of access to meter situations.D. Limitations of the Period for Backbilling --1. A utility shall not bill a customer for service provided more than 24 months before the utility actually became aware of the circumstance, error, or condition that caused the underbilling or that the original billing was incorrect.2. When there is customer fraud, theft of service, or denial of access to the meter, the utility shall estimate a bill for the period over which the fraud or theft was perpetrated or that denial of access occurred. The time limitations of Subsection R746-320-8(D)(1) do not apply to customer fraud or theft situations.3. In the case of a backbill for Utah sales taxes not previously billed, the period covered by the backbill shall not exceed the period for which the utility is assessed a sales tax deficiency.E. Payment Period and Interest -- A utility shall permit the customer to make arrangements to pay a backbill without interest over a time period at least equal in length to the time period over which the backbill was assessed. However, interest will be assessed at the rate applied to past due accounts on amounts not timely paid in accordance with the established arrangements. If the utility has demonstrated that the customer knew or reasonably should have known that the original billing was incorrect or in the case where there has been fraud or theft, interest will be assessed from the time the original payment was due.Utah Admin. Code R746-320-8