Through tax evasion, through the labour-leisure choice or in other ways, taxpayers reduce the tax base in response to an increase in the tax rate. The process is commonly-believed to generate a humped Laffer curve with a revenue-maximizing tax rate well short of 100%. That need not be so. In the...

We study the optimal redistributive tax structure when the population can be disaggregated into tagged groups. We begin with the case in which the tag has no normative significance, but simply separates the population into identifiable groups with different distributions of ability-types. Under...

Using the standard nonlinear income taxation framework with heterogeneity of preferences, this paper examines the optimality of workfare as a screening tool. It is assumed that workfare does not serve as a human capital investment, participation is mandatory, and administrative costs are...

We examine whether minimum wages can fulfill a useful role as part of an optimal nonlinear income tax scheme. In this setting, governments cannot observe household abilities, only their incomes. Redistributing according to income, the government is constrained by a set of incentive constraints....

This paper studies the optimal Pigouvian tax for correcting pollution when the government also uses distortionary taxes to raise revenues. When preferences are quasilinear in leisure and additive, the Pigovian tax can be separated from the Ramsey revenue-raising tax. We characterize the...

With quasi-linear in leisure preferences, closed-form solutions for the marginal tax rates and the marginal utility of consumption under utilitarian and maxi-min objectives depend only on the skill distribution. Bunching induced by binding second-order incentive conditions also depends only on...

Using the Mirrlees optimal income tax model with a maxi-min social welfare function, we derive conditions for a decreasing marginal tax rate throughout the skill distribution, a strictly concave tax function in income and a single-peaked average tax schedule. With additive preferences and a...

Important as it is for public policy, there is still no consensus about the size of the revenue-maximizing tax rate at the top of the Laffer curve. The purpose of this essay is not to supply a correct rate, but to identify difficulties in doing so. 1) Estimates of the revenue-maximizing tax rate...

We examine how the introduction of self-control preferences influences the trade-off between two fundamental components of a public pension system: the contribution rate and its degree of redistribution. The pension regime affects individuals' welfare by altering how yielding to temptation (i.e....

This paper evaluates the efficiency of flow-through shares as an after-tax financing instrument. This instrument was designed to assist non-taxable mining and petroleum companies in benefiting from various tax incentives given to these sectors. Efficiency is measured here as the ratio of the...