Taxation and Long-Run Growth

Lutz Hendricks ()

No 96/2, Working Papers from Arizona State University, Department of Economics

Abstract: A number of recent papers have investigated the growth effects of tax reforms in the context of neoclassical growth models where growth is due to human capital accumulation. Stokey and Rebelo (1995) show that the predicted growth effects disagree to a striking extent and are highly sensitive to the choices of several parameters about which little evidence exists. The purpose of this paper is to argue that the question should be reconsidered in the context of a life-cycle framework instead of the infinite horizon model used previously. Since human capital is not heritable, the infinite horizon case can no longer be derived as a reduced form of an altruistically linked dynasty of finitely lived individuals. Moreover, modeling agents as infinitely lived hides a fundamental asymmetry between human and physical capital: Since human capital cannot be sold or decumulated, agents must primarily use physical capital holdings to smooth consumption over the life-cycle and in particular to finance retirement consumption. As a consequence, changes in factor taxation mostly affect the stock of physical but not that of human capital. Correspondingly, our simulation results show that changes in flat rate factor taxation have little impact on long-run growth. In marked contrast to the previous literature, this result is remarkably robust to changes in the calibration and even to variations in the way human capital accumulation and intergenerational transfers are modeled. This strongly suggests that the large growth effects of taxation found previously overstate the true effect, perhaps by an order of magnitude. Much smaller effects are consistent with the observed stability of the U.S. growth trend in spite of dramatic increases in income tax rates after World War II.

Keywords: Economic growth; taxation; human capital. (search for similar items in EconPapers)
JEL-codes: O41 (search for similar items in EconPapers)
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Working Paper: Taxation and Long-Run Growth (1999)
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