We compare and contrast the CVAT and VIVAT approaches discussed in the preceding papers by McLure and Keen and Smith with the dual VAT originally discussed in our 1998 paper. We conclude that each of these approaches seems most suitable to different circumstances, but that none of them answers...

This paper examines the impact of changing the extent to which tax losses are refunded to firms in a model of imperfect competition. It proposes a particular collusive equilibrium in a repeated oligopoly with homogeneous quantity-setting firms. The industry sustains tacit collusion by using...