Motor Fuel Taxes

State Gasoline Tax Reports

Summary Report: Updated July 2008 to reflect changes since January 2008
Here is a summary report on gasoline and diesel taxes. This report is updated quarterly. API collects motor fuel tax information for all 50 states and compiles a report and chart detailing changes from the previous update and calculating a nationwide average – usually on a quarterly basis. API's chart reflects a weighted average for each state, meaning that any taxes which can vary across a state's jurisdiction are averaged according to the population of the local areas subject to each particular tax rate. Where appropriate, the weighted average also takes into consideration the typical percentages of premium, midgrade, and regular fuel purchased in each state. In states where taxes vary depending upon the price of the motor fuel (for example, where the tax rate is set as a percentage of the sales price rather than a cents per gallon method), the state average listed on the chart is a snapshot based upon the price of fuel (as reported by AAA) on the date the chart is updated.

As of July 1, 2008, the average amount of tax imposed on a gallon of gasoline sold in the United States was 49.4 cents per gallon, up 2.4 cents from the January 2008 report.  For diesel fuel, the national average amount of tax was 56.4 cents per gallon, up 2.8 cents from the January 2008 report.

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Gasoline Taxes

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