Tag Archives: carbon tax

Who Cares About the National Debt?

By James Kwak

Not Greg Mankiw. Or, to be precise, not “Republicans.”

This past weekend Mankiw wrote a column for the Times laying out the arguments for a carbon tax. They are so well known and so obviously correct that I won’t bother repeating them. (A tradable permit system could work equally well, depending on how it is designed.)

In addition, many people think that the national debt is a serious long-term problem. A carbon tax (or a tradable permit system where permits are auctioned off) would obviously bring in revenue. In White House Burning, we estimated this at about 0.7–0.9 percent of GDP by the early 2020s (citing Metcalf, Stavins, and the CBO).

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