The Seattle Times: Oregonians test taxing by the mile, not gallon

“New, more fuel-efficient cars have eaten into gas tax revenue. Furthermore, many gas tax rates — including Oregon’s 30-cent levy — have not kept up with inflation. In Oregon, the effective tax rate will fall to less than 24 cents per gallon in inflation-adjusted terms within 10 years, according to the Institute on Taxation and Economic Policy, a nonpartisan think tank. That decline would basically undo the state’s 6-cent increase in 2009, ITEP noted.”

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