The actual reductions are dependent on the Current Agricultural Use Value (CAUV) which is placed upon the land. Major factors affecting the value are soil type, soil region and land capability class. Agricultural commodity prices and production costs also enter in the CAUV value. The resulting CAUV value replaces the appraised value; the tax value is set at 35 percent of the CAUV value. The CAUV values are readjusted on a three-year cycle by the State Tax commissioner to account for changing agricultural production costs and commodity prices