Methodology
To determine the highest and lowest gas taxes in every state, 24/7 Wall St. reviewed data on average state gas taxes as of April 2023 from business tax compliance platform IGEN. State gas taxes do not include the federal gas tax of 18.4 cents per gallon. Supplemental data on the average price of regular gas by state came from AAA and is current as of April 11, 2023. Data on motor fuel consumption and the number of licensed drivers used to calculate annual motor fuel consumption per licensed driver by state came from the Federal Highway Administration and is for 2021.
The gas tax rate ranges at the state level from $0.09 to $0.61 per gallon. It should be noted that in the case of Iowa, due to the variance in local taxes, the effective state tax rate ranges from $0.24 per gallon to $0.30 per gallon. For the purposes of this story, we averaged that range.
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