Alternative corporate tax systems differ in their ability to adapt to changes in the rate of inflation. Absent complete indexing of depreciation allowances, a tax system may use the expected inflation rate to set accelerated depreciation allowances in a way that minimizes the welfare loss from them is allocation of capital. This welfare loss is a nonlinear function of the assumed inflation rate, however, so the welfare loss at the expected inflation rate may be quite different from the expected welfare loss. We compute these two welfare concepts for each of three alternative corporate tax schemes in the U.S. and for two different relationships between inflation and interest rates. One important finding is that the Auerbach-Jorgenson first year recovery plan is not equivalent to indexing as is often claimed, if uncertainty about inflation implies uncertainty about the real after-tax discount rate.

This paper studies the effect of policy uncertainty on the formation of new activities in Romer's (1994) type of an economy, where productivity of labor increases with the number of capital goods. Adding a new capital good requires a capital specific set-up cost, invested prior to using the capital good. Agents are disappointment averse, putting greater utility weight on downside risk [as modeled by Gul (1991)]. Policy uncertainty is induced by the Disappointment aversion implies that investment, labor and capitalists' income drop at a rate proportional to the standard deviation of the tax rate. Hence, policy uncertainty induces first-order adverse effects, whereas policy uncertainty leads to second-order effects when consumers maximize the conventional expected utility. The adverse effects of policy uncertainty can be partially overcome by a proper investment policy. The paper interprets the tax concessions granted to multinationals as a commitment device that helps overcoming the adverse implications of policy uncertainty.

Abstract: This paper proposes a simple index of the welfare significance of uncertainty in the public goods resulting as policy outcomes. Our measure is the ex ante compensation an individual would require to accept an uncertain level of service compared to receiving the expected value of the distribution of possible values for that service. Our compensation measure is a function of the coefficient of relative risk aversion, the variance in the measure of environmental service associated with policy and relevant for the individual, and a set of conventional parameters that describe the properties of nonmarket benefit measures under conditions of certainty. We would expect that the inverse virtual price elasticity of the for the environmental service and the square of the coefficient of relative variation are the primary factors influencing the size of our compensation index

Presenting innovative modelling approaches to the analysis of fiscal policy and government debt, this book moves beyond previous models that have relied upon the assumption that various age-specific rates and policy variables remain unchanged when it comes to generating government expenditures and tax revenues. As a result of population ageing, current policy settings in many countries are projected to lead to unsustainable levels of public debt; Tax Policy and Uncertainty explores models that allow for feedbacks and uncertainty to combat this.