Positional Preferences, Endogenous Growth, and Optimal Income- and Consumption Taxation

This paper analyzes the impact of positional preferences, exhibiting conspicuous consumption and conspicuous wealth, on optimal consumption- and income taxes, for an endogenous growth model with public capital. Positional preferences raise the endogenous growth rate if the elasticity of intertemporal substitution is larger than one. Even if labor supply is exogenous, the consumption externalities introduce distortions so long as preferences are wealth-dependent, and with or without the presence of conspicuous wealth. Consequently, optimal consumption- and income taxes differ from zero. Numerical simulations present the effects of fiscal policy on the balanced growth path and transitional dynamics.