Gas Tax: A Way to Cut Fuel Consumption That Everyone Likes

... Except Politicians. From the NYTimes:

SUPPOSE a politician promised to reveal the details of a simple proposal that would, if adopted, produce hundreds of billions of dollars in savings for American consumers, significant reductions in traffic congestion, major improvements in urban air quality, large reductions in greenhouse gas emissions, and substantially reduced dependence on Middle East oil. The politician also promised that the plan would require no net cash outlays from American families, no additional regulations and no expansion of the bureaucracy.

As economists often remind their students, if something sounds too good to be true, it probably is. So this politician's announcement would almost surely be greeted skeptically. Yet a policy that would deliver precisely the outcomes described could be enacted by Congress tomorrow — namely, a $2-a-gallon tax on gasoline whose proceeds were refunded to American families in reduced payroll taxes.

Proposals of this sort have been advanced frequently in recent years by both liberal and conservative economists. Invariably, however, pundits are quick to dismiss these proposals as "politically unthinkable."

If its such a great idea, why is it considered political suicide to promote it? It turns out the Gas Tax Hike failed miserably ONCE in the past, back in the Carter administration:

Mr. Carter's opponents mounted a rhetorically brilliant attack on his proposal, arguing that because consumers would get back every cent they paid in gasoline taxes, they could, and would, buy just as much gasoline as before. Many found this argument compelling, and in the end, President Carter's proposal won just 35 votes in the House of Representatives.

The experience appears to have left an indelible imprint on political decision makers. To this day, many seem persuaded that tax-cum-rebate proposals do not make economic sense. But it is the argument advanced by Mr. Carter's critics that makes no sense. It betrays a fundamental misunderstanding of how such a program would alter people's opportunities and incentives.

In terms of energy consumption, encouraging less driving is probably the most important component of any energy saving program. See the comment of "Dave in MT" from an earlier post on this subject. It would be naive to think that either the Republicans or Democrats would propose a gas tax hike in an election year. Maybe NEXT year?

Some examples help to illustrate how the program would work. On average, a family of four currently consumes almost 2,000 gallons of gasoline annually. If all families continued to consume gasoline at the same rate after the imposition of a $2-a-gallon gasoline tax, the average family would pay $4,000 in additional gasoline taxes annually. A representative family with two earners would then receive an annual payroll tax refund of $4,000. So, if all other families continued to buy as much gasoline as before, then, this family's tax rebate would enable it to do so as well, just as Mr. Carter's critics claimed.

But that is not how things would play out. Suppose, for example, that the family was about to replace its aging Ford Explorer, which gets 15 miles per gallon. It could buy another Explorer. Or it could buy Ford's new Focus wagon, which has almost as much cargo capacity and gets more than 30 miles per gallon. The latter choice would save a whopping $2,000 annually at the pump. Not all families would switch, of course, but many would.