Fiscal Policy in an Endogenous Growth Model with Human Capital Accumulation

In this paper we present an endogenous growth model with physical and human capital accumulation and study the effects of labor and capital income taxation on the transitional dynamics to the balanced path. Our results amount to an extension of those in Caball\'{e} and Santos (1993) and offer conditions on the parameters in the model to characterize the three growth cases (normal growth, exogenous growth and paradoxical growth). We show that parameters on preferences, technologies and depreciation rates, as well as fiscal policy parameters, are relevant to determine qualitatively the dynamic behavior of the economy. We also offer a measure of the inefficiency derived from the taxation of capital earnings. The associated welfare cost is closely related to the short-run behavior of human capital investment, which characterizes the three possible growth cases.