How High are Gas Taxes in Your State?

July 28, 2021

This map shows state gas tax rates as of July 2021, using recently released data from the American Petroleum Institute.

States levy gas taxes in a variety of ways, including per-gallon excise taxes collected at the pump, excise taxes imposed on wholesalers (which are passed along to consumers in the form of higher prices), and sales taxes that apply to the purchase of gasoline. The American Petroleum Institute accounts for these different approaches when it calculates the average tax rate on a gallon of gas in each state. These rates vary widely from state to state and can be seen in the map below.

2021 gas tax rates and 2021 state gas tax rankings. How much is gas tax rates in each state. Which state has the highest gas tax rate.

California pumps out the highest state gas tax rate of 66.98 cents per gallon, followed by Illinois (59.56 cpg), Pennsylvania (58.7 cpg), and New Jersey (50.7 cpg). The lowest state gas tax rates can be found in Alaska at 14.98 cents per gallon, followed by Missouri (17.42 cpg) and Mississippi (18.79 cpg).

While few taxpayers are cheerleading gas taxes, these systems embody the “benefit principle” of taxation relatively well. This public finance concept holds that the taxes a person pays should relate to the government services that person receives. In general, drivers benefit from the services that their gas tax dollars pay for, like road construction, maintenance, and repair. Because gas taxes connect drivers to the costs of road upkeep, they encourage efficient road use, which helps limit congestion and the wear and tear that comes from overuse.

However, the federal government and many states have not indexed their specific rates for inflation, leading the real value of gas tax revenue to fall behind infrastructure spending needs across the country. Gas taxes also face a narrowing base, as the improvement in vehicles’ fuel economy along with the growth in sales of electric vehicles distorts the tax’s connection to vehicle-driven externalities. One long-term solution would be to turn to a tax on vehicle miles traveled to ensure that those driving on the roads are paying for the roads, though this raises privacy concerns that have yet to be adequately resolved. In the short term, states that have not done so should index their gas taxes to inflation, creating a more stable revenue source to fund infrastructure maintenance and repair.

How does your state compare?

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A sales tax is levied on retail sales of goods and services and, ideally, should apply to all final consumption with few exemptions. Many governments exempt goods like groceries; base broadening, such as including groceries, could keep rates lower. A sales tax should exempt business-to-business transactions which, when taxed, cause tax pyramiding.

The average tax rate is the total tax paid divided by taxable income. While marginal tax rates show the amount of tax paid on the next dollar earned, average tax rates show the overall share of income paid in taxes.