In Edge v. State Farm, the state Supreme Court adopted the filed rate doctrine. The filed rate doctrine stands for the proposition that because an administrative agency is vested with the authority to determine what rate is just and reasonable, courts should not adjudicate what a reasonable rate might be in a collateral lawsuit. According to the court:
We find the policy reasons behind the filed rate doctrine persuasive. The filed rate doctrine preserves the stability, uniformity, and finality inherent in rates filed with the regulatory agency and what has been determined to be a reasonable rate by that agency. Cullum v. Seagull Mid-South, Inc., 907 S.W.2d 741, 745 (Ark. 1995). Accordingly, we hereby adopt the filed rate doctrine and, furthermore, we find it applicable in the insurance industry. Although not applicable in the present case, we also recognize there are several exceptions as set out above which may prevent its application.