15 AAC 55.171 (m) specifies how the average spot price for ANS at the US West Coast during a month is to be calculated for purposes of determining prevailing value. For the convenience of taxpayers and the public, the Tax Division calculates the average spot price each month and publishes the result on this web page. However, the Division does not guarantee the accuracy of these calculations, and in the event of a discrepancy between a calculation published here and the true average spot price as provided by the regulation, the provisions of the regulation control.

$ Per Barrel2013201220112010200920082007200620052004
January109.876111.87192.55779.335 39.01191.15951.52362.84641.12533.100
February112.757119.64796.78676.741 42.77694.42256.99859.26243.58933.660
March108.930122.678115.34179.45147.747 105.06359.00760.60750.63235.505
April104.576120.945120.86082.232 46.558 112.37063.91667.73749.74935.430
May110.546113.56774.231 58.234125.41264.75569.31646.77239.066
June98.063111.07975.664 69.797 133.77669.10969.50053.67436.729
July103.748114.46976.52964.530 132.87175.93073.10456.67139.440
August110.792106.94875.78371.523115.97673.83071.73862.40043.124
September111.937113.73675.266 69.200101.862 79.72062.33063.46742.707
October107.297110.83682.40674.27573.65084.77054.26860.36948.560
November105.235115.58083.928 76.52453.9492.98254.26156.10842.151
December107.305106.54689.747 75.11737.699 88.63858.13257.16936.658


In January 2013, Reuters, a pricing service, deleted several daily Alaska North Slope (ANS) published estimated spot prices. These prices were for “market holidays.” Reuters ordinarily does not publish ANS spot prices on “market holidays.” This resulted in 2 revisions to the ANS West Coast (WC) Average Spot Price posted on the Department of Revenue website. ANS WC Prevailing Value for January 2012 increased from $111.794 to $111.871 and ANS WC Prevailing Value for September 2012 decreased from $111.971 to $111.937. The Department is posting this change because this revision affects the 2012 production tax return due on March 31, 2013.