Section 323.623 - Appeals(1) Except as otherwise provided in ORS 323.500 to 323.645, any person aggrieved by an act or determination of the Department of Revenue or its authorized agent under ORS 323.500 to 323.645 may appeal to the Oregon Tax Court in the time and manner provided in ORS 305.404 to 305.560. These appeal rights shall be the exclusive remedy available to determine the person's liability for the taxes imposed under ORS 323.500 to 323.645.(2) An appeal to the Oregon Tax Court under ORS 323.500 to 323.645 stays proceedings to collect any unpaid tax unless the tax court believes the collection of the tax will be jeopardized by delay or otherwise orders collection proceedings to continue.