Washington State gas tax is 43 cents now, and going up ANOTHER 46 cents iirc Jan. 1. (I might be off by a penny or two.)
Edit to my post. WA state gas tax is at 49 cents a gallon now. It is not clear what it might rise to as it is not a tax on the gasoline, but a carbon tax on the producer (Mobil, Exxon, Etc.) which they of course will pass onto the consumer.
Some watchdog group calculated it at 46 cents a gallon. But the state said something like that is a simplified calculation and there are many factors that will go into the tax and how companies may respond and reduce their taxes and it is all very complicated but they are pretty confident that it won’t be an additional 46 cents at the gas pump because they are experts.