[reg45]

If gasoline goes from $4.00 per gallon to $2.00 per gallon then the states and cities with sales taxes will see their revenues decline. LOL

[thackney]

Many of the gasoline taxes are a fixed rate per gallon. Some use percentage but it is a lesser portion of all the taxes.

http://www.api.org/oil-and-natural-gas-overview/industry-economics/~/media/Files/Statistics/State-Motor-Fuel-Excise-Tax-Update-Oct-2014.pdf