The Knowledge Tax

63 Pages Posted: 20 Jan 2015 Last revised: 18 Dec 2015

See all articles by Michael Simkovic

Michael Simkovic

University of Southern California Gould School of Law; University of Southern California - Marshall School of Business

Date Written: February 23, 2015


Government subsidies to higher education have recently become a hot button political issue. But what if the federal government doesn’t actually subsidize higher education, but rather, taxes it?

This article gauges efficient investment levels based on marginal rates of return relative to other investments. Labor economists struggle to explain why the rates of return to higher education have remained much higher than the rates of return to other investments. This article proposes a novel explanation: distortionary taxation.

Economic theory suggests that when investments that are substitutes for one another are taxed inconsistently, investors are less likely to choose the investment option that is taxed more heavily. Unfavorable tax treatment of higher education relative to other forms of investment could create an undersupply of educated labor. This distortion would increase pretax returns to education and reduce economic growth and social welfare.

Part I of this article reviews empirical evidence linking higher education to increased earnings and economic growth, and considers student responsiveness to financial incentives. Part II explains why the unusually high rates of return to higher education may indicate underinvestment. Part III presents a mathematical model illustrating the link between tax rates and rates of return. Part IV reviews optimal tax theory and the distortion problem. Part V contrasts taxation of favored investments with taxation of higher education. Part VI considers policy implications.

Keywords: labor economics, human capital, tax, taxation, optimal tax, distortion, economic growth, investment, higher education, post-secondary education, misallocation of capital, tuition, student loan, student loans, amortization, deduction, earnings premium, payroll tax, income tax, capital gains

JEL Classification: D01, D61, D91, D92, E24, E22, E62, H2, H21, H31, H4, H52, I2, J24, J44, K34

Suggested Citation

Simkovic, Michael, The Knowledge Tax (February 23, 2015). 82 University of Chicago Law Review 1981 (2015), Available at SSRN: or

Michael Simkovic (Contact Author)

University of Southern California Gould School of Law ( email )

699 Exposition Boulevard
Los Angeles, CA 90089
United States

University of Southern California - Marshall School of Business ( email )

701 Exposition Blvd
Los Angeles, CA California 90089
United States

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