ORS 305.775: Interest on amount of refund in certain cases.

If an appeal from or petition for certiorari to review a decision of the Supreme Court of Oregon, holding a tax law or any part thereof invalid, is taken to the Supreme Court of the United States and that court does not reverse or modify the decision of the Supreme Court of Oregon, the refund of the invalid taxes shall include interest on the amount paid at the rate of six percent from the date of the last decision of the Supreme Court of Oregon in the matter to the date of filing with the Secretary of State of the report and list of taxpayers entitled to the refunds as required by ORS 305.770.