Do taxes change when the gas price goes up?

The sales taxes change. They are based upon a percent of sales, not cents per gallon. For each 13.3 cents the retail gas price goes up the sales taxes go up one cent with fuel not containing ethanol, and one cent for each 19 cent price change for fuel containing ethanol. With fuel price increases the state enjoys a nice windfall. They don't talk about that much. Sales tax on a $1 gas purchase is a bit less that 7 cents and a $2 gas purchase a bit bit less that 14 cents.