Gasoline Tax is collected from every State in the United States. The US Federal government collects 18.4 cents on every gallon of gasoline. State and Local government also collect their own gas tax. The average gas tax in the United States is 49.9 cents per gallon (April 2014)
In Tennessee, gas tax is 39.8 cents per gallon of unleaded gasoline. Tennessee is ranked 37th in terms of gasoline tax in the United States.