Washington gas prices
Washington is one of the most expensive states for gas in the country. High state gas taxes, a Clean Fuel Standard, and a cap-and-trade carbon program all add significant costs on top of the base fuel price. Seattle drivers can pay 50 to 80 cents more per gallon than the national average.
The state does have several refineries in the Anacortes area near the Canadian border, which process crude from Alaska and Canada. But the regulatory costs offset this supply advantage. Washington's gas taxes are among the highest in the nation, and the carbon market has added another layer of cost since 2023.
Price history
Why is gas so expensive in Washington?
Three things stack up: high state gas taxes, the Clean Fuel Standard compliance costs, and the cap-and-trade carbon pricing program that started in 2023. Together these add significant per-gallon costs that push Washington near the top of the national price rankings.
Does Washington have its own refineries?
Yes. Several refineries in the Anacortes area near the Canadian border process crude from Alaska and Canada. They produce enough fuel for Washington and also supply Oregon. But regulatory costs on top of the base fuel price keep pump prices high.
Is gas cheaper in eastern Washington?
Not much. While eastern Washington avoids some of the reformulated fuel requirements, state taxes and carbon costs apply statewide. The price difference between Seattle and Spokane is usually only a few cents.