Oklahoma Administrative Code
Title 710 - Oklahoma Tax Commission
Chapter 1 - Administrative Operations
Subchapter 5 - Practice and Procedure
Part 5 - ADMINISTRATIVE PROCEEDINGS RELATED TO TAX PROTESTS
Section 710:1-5-42 - Appeals from orders of the Oklahoma Tax Commission

(a) If a taxpayer is aggrieved by any order, ruling, or finding of the Tax Commission, the taxpayer may appeal therefrom directly to the Oklahoma Supreme Court. The appeal must be perfected within thirty (30) days of the mailing of the order by filing a petition in error with the clerk of the Supreme Court of the State of Oklahoma and by filing a designation of the record with the Secretary of the Tax Commission at the same time the petition in error is filed.

(b) In lieu of an appeal to the Supreme Court, any taxpayer aggrieved by a final order of the Tax Commission assessing a tax or an additional tax or denial of a claim for refund may opt to file an appeal for a trial de novo in the district court of Oklahoma County or the county in which the taxpayer resides. An appeal for trial de novo in district court must be filed in the district court within thirty (30) days of the mailing of the Tax Commission order. A district court order resulting from such a trial shall be appealable directly to the Supreme Court of Oklahoma by either the taxpayer or the Tax Commission. Such appeal shall be taken in the manner and time provided by law for appeal to the Supreme Court from the district court in civil actions. The provisions of this subsection shall be applicable for tax periods beginning after January 1, 2014. Provided, if the order applies to multiple tax periods which begin before and after January 1, 2014, the appeal provided by this subsection shall be available to the aggrieved taxpayer.