(1) A general rate increase filing is a tariff change that would:

(a) Increase the company's gross annual revenue from activities regulated by the commission by three percent or more.

(b) Restructure tariffs so that the gross revenue generated by any customer class would increase by three percent or more.

(2) The following tariff changes are not considered general rate increase filings even though the request may meet one or more criteria identified above:

(a) Filings for collection of per-customer pass-through surcharges and taxes imposed by the jurisdictional local government based on the current year customer count either as a specified dollar amount or percentage fee amount.

(b) Filings by existing auto transportation companies for the implementation of new transportation services.

(3) The commission may require that any filing to increase rates for any customer class, or to restructure rates, is subject to the additional requirements of WAC 480-30-426.