We construct a dynamic, general equilibrium model of tax evasion where agents choose to report some of their income. Unreported income requires using a payment method that avoids recordkeeping - cash. Trade using cash to avoid taxes is the theoretical measure of the "shadow economy" from our...

This paper considers the environmental policy and welfare implications of a merger between environment firms (i.e., firms managing environmental resources or supplying pollution abatement goods and services). The traditional analysis of mergers in Cournot oligopolies is extended in two ways....

In this partial equilibrium and static model, the impact of environmentalism on two countries' environmental policies is presented. First, the only (indirect) way environmentalists influence the choice of pollution taxes is through a negative term in the welfare function in Home. It is defined...