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The Window Tax: A Tale of Excess Burden

For economists, the \”excess burden\” of a tax refers to the idea that the cost of a tax isn\’t just the amount of money collected–it\’s also the ways in which taxpayers alter their behavior because the tax has changed their incentives. A moderately well-known classroom and textbook example is the \”window tax,\” first imposed in England in 1696 by King William III, and not definitively repealed until 1851. The excess burden of the window tax was that lower-income people ended up living in rooms with few or no windows.

Wallace E. Oates and Robert M. Schwab review the history of the window tax and provide actual estimates of how it affected the number of windows per house in their article, \”The Window Tax: A Case Study in Excess Burden,\” which appeared in the Winter 2015 issue of the Journal of Economic Perspectives (where I have toiled in the fields as Managing Editor since 1987). The article popped back into my mind earlier this week when I learned that Oates, a highly distinguished economist based at the University of Maryland since 1979, died last week.  One of Oates\’s specialties was the area of local public finance, and his 1972 book on Fiscal Federalism,  is a classic of that subfield.

Here are some facts about the historical window tax, courtesy of Oates and Schwab.

Oates and Schwab work with a mix of data on the number of windows in a sample of houses in Shropshire and economic theory about household behavior when confronted with taxes to generate an admittedly rough estimate that on average, collecting a certain amount of money through the window tax created an excess burden–in terms of the costs of living in a place with fewer windows–equal to an additional 62% of the value of the tax.

Oates and Schwab ask why the window tax lasted so long, give its many problems, and offer an appropriately cynical answer: \”Perhaps the lesson here is that when governments need to raise significant revenue, even a very bad tax can survive for a very long time.\”

I didn\’t know Oates personally, but I had one other job-related interaction with him back. Along with his work in local public finance, Oates was also well-known as an environmental economist. His 1975 book, The Theory of Environmental Policy (written with William Baumol) was highly influential in setting the direction of what at the time was a fairly new and growing field. In 1995, Oates was a co-author in one of the most downloaded and cited exchanges the JEP has ever published on the subject of what is sometimes called the \”Porter hypothesis.\”

Michael Porter made the argument–bolstered by a large number of case studies, that when environmental goals are set in a strict way, but firms are allowed flexibility in how to achieve those goals in the context of a competitive market environment, firms often become quite innovative in meeting those environmental goals. Indeed, Porter argued that in a substantial number of cases, the innovations induced by the tough new environmental rules save enough money so that the rules end up imposing no economic costs at all. In the Fall 1995 Journal of Economic Perspectives, Michael E. Porter and Claas van der Linde make their case in \”Toward a New Conception of the Environment-Competitiveness Relationship,\” (9:4, 97-118). The authorial team of Karen Palmer, Wallace E. Oates, and Paul R. Portney respond in \”Tightening Environmental Standards: The Benefit-Cost or the No-Cost Paradigm?\” (9:4, 119-132). Oates and his co-authors took the position that while the costs of complying with environmental regulations do often turn out to be lower than industry predictions that were made when the rule was under discussion, it goes too far to say that environmental rules usually or generally don\’t impose costs. I wrote about some more recent evidence on this dispute in \”Environmental Protection and Productivity Growth: Seeking the Tradeoff\” (January 8, 2015).