Just in time for Tax Day, here's a small reminder of the way a few cents per gallon can impact the way that we drive. That's right: the dreaded state and federal excises that contribute to the "gas tax."

Everyone is entitled to an opinion about the price of fuel, but the numbers don't lie. The state with the highest gasoline tax is Pennsylvania, at 70 cents per gallon. That's 21.15 cents higher than the national average of 48.85 cents

But, wait: Doesn't California seem to have the highest fuel prices? According to calculations by the American Petroleum Institute, the Golden State ranks second-highest, with a fuel excise of 65.98 cents per gallon, followed by New York's 62.86 cents per gallon. California's high rate, along with other neighboring states, does help the API's "West" region earn the highest average gasoline tax in the country, at 59.34 cents per gallon.

And if you're buying diesel fuel in the Keystone State, the per-gallon tax is 89.7 cents—also the most expensive in the nation. Alternatively, the state with the least expensive cost of diesel is Alaska, at 36.2 cents. That's quite a few tanks of Texas Kombucha, even in the most efficient diesel-powered cars.

The five states with the lowest gasoline surcharges are Alaska, New Jersey, South Carolina, Oklahoma, and Missouri, in ascending order. The API calculates the total fuel surcharge as the combined effect of state and federal taxes, per gallon.

The U.S. may not have the highest gas prices in the world, but a survey of the taxes paid here shows how small amounts can really add up.

You can read the whole study here.

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