New Graphics: State Gas Taxes at Historic Lows, and Dropping


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There are few areas of policy where lawmakers’ shortsightedness is on display as fully as it is with the gasoline tax.  Now, with a series of twenty six new charts from the Institute on Taxation and Economic Policy (ITEP), you can see the impact of that shortsightedness in most states as shareable graphs.

Overall, state gas taxes are at historic lows, adjusted for inflation, and most states can expect further declines in the years ahead if lawmakers do not act.  Some states, including New Jersey, Iowa, Utah, Alabama, and Alaska, are levying their gas taxes at lower rates than at any time in their history.  Other states like Maryland, Oklahoma, Massachusetts, Missouri, Tennessee, Arkansas, and Wyoming will approach or surpass historic lows in the near future if their gas tax rates remain unchanged and inflation continues as expected.

These findings build on a 50-state report from ITEP released last month, called Building a Better Gas Tax.  ITEP found that 36 states levy a “fixed-rate” gas tax totally unprepared for the inevitable impact of inflation, and twenty two of those states have gone fifteen years or more without raising their gas taxes.  All told, the states are losing over $10 billion in transportation revenue each year that would have been collected if lawmakers had simply planned for inflation the last time they raised their state gas tax rates.

View the charts here, and read Building a Better Gas Tax here.

Note for policy wonks: Charts were only made in twenty six states because the other twenty four do not publish sufficient historical data on their gas tax rates.  It’s also worth noting that these charts aren’t perfectly apples-to-apples with the Building a Better Gas Tax report, because that report examined the effect of construction cost inflation, whereas these charts had to rely on the general inflation rate (CPI) because most construction cost data only goes back to the 1970’s.  Even with that caveat in mind, these charts provide an important long-term look at state gas taxes, and yet another way of analyzing the same glaring problem.

Example:

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