Asset Prices in the Presence of a Tax Authority

We are interested in the effect of capital income taxes upon security prices when investors face locally segmented stock markets and a global bond market. Therefore, we analyze an equilibrium model of an economy with binomial uncertainty, an exogenous risk-free interest rate and a representative stand-in household. In this setting, the pricing effect for domestic securities is shown to be a function in three determinants: the covariance between pre-tax payoffs of securities and the aggregated market portfolio, the exogenous pre-tax interest rate and the effect of taxation (and redistribution) on the aggregate welfare of the stand-in household. We find that taxation of capital income is non-distorting if tax proceeds are immediately redistributed within the cohort of capital market participants. If, however, taxation represents a policy tool to transfer wealth from capital market participants to non-market participants, the level of the statutory tax rate is reflected in equilibrium security prices and taxation affects households portfolio decisions, which in turn may affect investment decision of firms