As Colby Cosh points out, you can find all sorts of economists to explain why a properly constructed and applied carbon tax is the least harmful way to reduce carbon output, but Canadians typically focus on the “tax” part and not the claimed environmental efficiency benefits:
In yesterday’s Financial Post, the Calgary economist Jack Mintz asked the question “Why are carbon taxes so unpopular?”, pointing out that plenty of countries and jurisdictions have commitments to climate progress and energy efficiency but that few use this particular policy instrument. I guess Jack wouldn’t have had much of a column if he had just adopted the spirit of an auto mechanic explaining a breakdown to a naive car owner and jabbed directly at the problem. “See that word ‘taxes’? There’s your problem right there.”
And, truly, it is not quite as simple as that. But, as Mintz suggests, it is a big part of the difficulty. As a means of helping reduce carbon output, carbon taxes are competing with subsidies and regulations. Pervasive carbon taxes are, as a general principle, a less costly way of eliminating freely exhaled carbon, pound for pound or ton for ton.
If the tax is well designed, you are slapping a uniform unit price directly onto the thing you are trying to prevent; and you are leaving people and businesses to make decentralized judgments, based on their knowledge of their own circumstances, about whether to avoid the tax, and when, and how to do it. Even though the initial level of the tax must be something of a guess, you can adjust it by arbitrarily small increments until you have eliminated just as much carbon output as you wish to.
Economists will recognize that last paragraph as a grocery list of the relative advantages of carbon taxation. But voters are predisposed to hate taxes, and are very sensitive to their size and their side effects. They may not like government subsidies for windmills or carbon-capture schemes or certain species of light bulb either; but subsidies can usually be sold on the basis of local job creation or business incubation, and they can be — let’s face it, inevitably are — adjusted for maximum electoral benefit.
For my part, I don’t disbelieve the economists on the efficiency arguments … I just don’t trust the government to design and implement such a tax without rigging the system to benefit favoured corporations, regions, and donors.
