Environmental and tax policies and the optimal provision of clean and dirty public goods are analysed within the context of a second-best framework of optimal taxation. Households consume both clean and dirty commodities. Degradation of the natural environment occurs due to the consumption of...

This paper reviews recent developments in the study of the so-called "double dividend", i.e. the possibility of improving the environment and, at the same time, reducing the distortions of the tax system through revenue-neutral green taxes. Recent modeling advances are considered at both the...

This paper considers buyer power in the presence of upstream competition to supply a homogeneous product. A likely consequence of upstream competition is that each supplier is uncertain of its final output, because it does not know how many downstream buyers will select it as a seller. We...

This Paper investigates how the formation of larger buyers affects a supplier's profits and, by doing so, his incentives to undertake non-contractible activities. We first identify two channels of buyer power, which allows larger buyers to obtain discounts. We subsequently examine the effects of...

This paper analyses the sources of buyer power and its effect on sellers’ investment in quality improvements. In our model retailers make take-it-or-leave-it offers to a producer and each of them obtains its marginal contribution to total profits (gross of sunk costs). In turn, this depends on...

This Paper analyses the impact of retail mergers on product variety. We show that a merging firm may want to enhance its buyer power vis a vis suppliers by delisting products and committing to a ‘single-sourcing’ purchasing strategy. Anticipating this, suppliers will strategically choose to...

This Paper provides a conceptual framework of multilateral bargaining in a bilaterally oligopolistic industry to analyse the motivations for horizontal mergers, technology choice, and their welfare implications. We first analyse the implication of market structure for the distribution of...

We challenge the view that the presence of powerful buyers stifles suppliers' incentives to innovate. Following Katz (1987), we model buyer power as buyers' ability to substitute away from a given supplier and isolate several effects that support the opposite view, namely that the presence of...

This Paper re-examines the impact of capital income taxes on the incentive to invest in the presence of risk. Specifically, it challenges a well-known claim in the literature that such a tax can leave incentives ‘basically unaffected’ because the tax liability is offset by a reduction in the...

This paper proposes a methodology for computing effective average tax rates using national accounts and revenue statistics, and applies it to construct time-series of tax rates for the seven largest industrialized countries. The resulting tax rates are consistent with available estimates of...