The well-know Johansson-Samuelson Theorem proves that, in partial equilibrium, comprehensive income taxation with a uniform tax rate is neutral in terms of investment decisions, if fiscal depreciation allowances coincide with economic depreciation. In this article we show that this result does...

We analyze Auerbach´s (1991) proposal of a retrospective capital gains tax, which is equivalent to an accrual tax on an ex ante basis. Using a continuous-time model with stochastic interest rates and serially correlated asset returns, we prove that such an equivalence still holds. This means...

In this article, we analyze a state-contingent tax on capital gains. We start by focusing on Auerbach's (1991) retrospective capital gains tax device. Although this system is equivalent to an accrual method from an ex-ante perspective, it is not on an ex-post basis. As recognized by Auerbach,...

We study the optimal consumption and portfolio for an agent maximizing the expected utility of his intertemporal consumption in a financial market with: (i) a riskless asset, (ii) a stock, (iii) a bond as a derivative on the stochastic interest rate, and (iv) a longevity bond whose coupons are...

In a recent article Davidson, Lawrence and Wilson propose a model showing that, in the presence of distortionary taxations and goods of different quality, tax evasion can be an optimal device. Here, we show that this result, although quite interesting, cannot be generalised to a framework where...