Oregon Revised Statutes Revenue and Taxation § 310.040

If after a tax levy has been made by any county court or board of county commissioners and before the extension of the levy upon the tax rolls, the necessity for any item contained in the budget upon which the levy is based is eliminated by act of the Legislative Assembly, the county court or board of county commissioners shall by appropriate order reduce the amount of the levy by the amount of such item. Thereupon the levy shall be extended upon the rolls as so reduced.