Idaho Power Company v. Idaho State Tax Commission

Summary

The Idaho Supreme Court considered challenges by Idaho Power Company and Avista Corporation to the Idaho State Tax Commission’s assessments of operating property for tax years 2019 and 2020. The court held that the federal Railroad Revitalization and Reform Act did not preempt Idaho’s constitutional uniformity requirement and that genuine issues of material fact precluded summary judgment on the companies’ alternative equalization claim. The decision of the district court was affirmed in part and vacated in part.

Holdings

1. The 4-R Act does not broadly preempt Idaho's constitutional requirement that taxes on property in the same class be uniform. The Act preempts only taxation of railroad property that contradicts the Act, and it does not prevent Idaho from equalizing the Companies' operating-property assessments in accordance with the Idaho Constitution.
2. Property Tax Administrative Rule 131 does not apply to the equalization of centrally assessed operating property.
3. The district court properly denied the Commission's motion for summary judgment on the alternative claim because genuine issues of material fact remained regarding whether the Companies' operating-property assessments were erroneous and resulted in unconstitutional non-uniformity relative to other commercial property.
4. On remand, the district court must determine whether the Companies proved by a preponderance of the evidence that the Commission erred in failing to equalize the assessments of their operating property.

Questions Presented

1. Whether the federal Railroad Revitalization and Reform Act of 1976 preempts Idaho's constitutional requirement that taxation of operating property be proportional and uniform, thereby precluding the Companies' 4-R claim.
2. Whether Property Tax Administrative Rule 131 applies to the equalization of centrally assessed operating property.
3. Whether genuine issues of material fact precluded summary judgment on the Companies' alternative claim that their operating property was systematically over-assessed relative to other commercial property.
4. What burden of proof and standard the district court should apply on remand to the Companies' non-uniformity claims.

Disposition

reversed_and_remanded