Strategic Voting for Noncooperative Environmental Policies in Open Economies

In this paper, we construct a political-economy model of strategic environmental policymaking with different degrees of product differentiation and different market structures, and examine how strategic voting decisions are affected by the choice of environmental policy instruments (tax or standard). We show that in a Cournot market structure, voters elect tax-setting policymakers who are more green than themselves when product differentiation and/or environmental externalities are more prominent. In a Bertrand market structure, they elect more green tax-setting policymakers than themselves. On the other hand, they elect standard-setting policymakers who are less green than themselves. The results confirm the advantage of the overall use of emission tax over that of emission standard regarding the welfare effect of strategic voting.     

Maximum‐revenue versus Optimum‐welfare Export Taxes: a Delegation Game*

In the Eaton and Grossman (1986 ) Bertrand duopoly model of strategic export taxes, both countries may be better off if they both delegate to policymakers who maximize tax revenue rather than welfare. However, both countries delegating to policymakers who maximize tax revenue is not a Nash equilibrium unless the degree of product substitutability is sufficiently high. For a wide range of values for the degree of product substitutability, the game is a prisoner's dilemma where both countries are better off delegating to policymakers who maximize tax revenue but both will delegate to policymakers who maximize welfare in the Nash equilibrium.     

Voluntary Environmental Agreements vs. Emission Taxes in Strategic Trade Models

The purpose of the paper is to narrow the gap between the widespread use of voluntary agreements and research on the rationale of such approaches. A topical example are voluntary agreements of many industries to reduce carbon dioxide emissions because of global warming. If the industry anticipates that taxes and fees will be introduced in the coming years, it seems rational to act in advance in order to mitigate the tax levels.The conventional approach in strategic trade and tax models was to look at a two-stage game where governments set taxes first and then firms react. In such a policy regime the government is concerned about the international competitiveness of its firms and sets taxes below marginal damages. In this paper, we consider a policy regime with a reversed timing. Firms commit themselves in the face of emission taxes to abatement efforts and to lower levels of the environmentally intensive output. Then the government introduces the tax. Under this timing of strategies the tax is equal to marginal damage. Firms waive profit and reduce output in order to use less of the polluting input. The reward for this behavior will be a less strict use of policy instruments and hence lower abatement costs in the near future.     

Global environment and dynamic games of environmental policy in an international duopoly

This paper examines a differential game model of international pollution control in which polluting oligopolists compete in a third country market. Two alternative policy instruments (emission taxes and command-and-control regulations) are considered. A tougher emission policy in the home country enhances the foreign firm’s competitiveness because of the static “rent-shifting” effect. The foreign country also enjoys a future improvement of the global environmental quality by “free riding” on the home country’s emission reduction effort. Because of these strategic effects, the levels of environmental policy determined in the noncooperative policy game are distorted away from the socially optimal level. Moreover, the emission tax game produces a more distortionary outcome than that in the command-and-control game; it generates more pollution and lower welfare.      

Tax Competition in Vertically Differentiated Markets with Environmentally Conscious Consumers

This paper analyses the effects of tax competition on environmental product quality, pollution and welfare in a two-country, vertically differentiated, international duopoly, in which consumers are environmentally conscious. The firm in each country chooses first the environmental quality of its product (which reflects the emissions generated in the production process) and then the price. In equilibrium one country will be more polluted than the other because firms choose different levels of environmental quality of their products. We find that a country’s optimal commodity tax is higher if the domestic firm is the more polluting supplier. Furthermore, non-cooperative commodity tax rates are inefficiently high in equilibrium. This is because, in this framework with environmentally aware consumers, commodity taxes affect the choice of firms regarding their emissions. Therefore, a domestic tax reduction not only raises the profits of the foreign firm but also lowers its emission levels, resulting in higher welfare for the other country. We also analyse the optimal cooperative and non-cooperative commodity and emission taxes with border tax adjustments. With these two policy instruments available, commodity taxes are higher.     

Tax Competition, Capital Mobility, and Public Good Provision Within a Trading Block

The authors examine a two–country general–equilibrium model of a two–country trading block where governments through tax policies attract mobile capital and provide an imported public consumption good. Within this framework the authors examine, among other things, how preferences over the public good and the size (population) of a country affect the Nash or cooperative equilibrium values of income tax rates in the two countries. The analysis identifies sufficient conditions under which (i) the Nash/cooperative equilibrium income tax rates are strategic substitutes or complements, and (ii) the Nash equilibrium income tax rates may be greater than the cooperative rates.     

Which border taxes? Origin and destination regimes with fiscal competition in output and emission taxes

This paper posits a two-stage game in tax regime and tax rates to study the property of second-best emission and output taxes in a two-country world with an atmospheric externality. It shows that (i) either the destination–destination or the origin–origin tax regime may constitute the subgame perfect Nash equilibrium of this game; (ii) either regime may Pareto-dominate the other; (iii) it is possible to have a prisoner's dilemma game where the origin–origin regime Pareto-dominates but the choice of the destination regime is the dominant strategy for each country. Other results include (iv) under origin–origin regime: the output tax is used for fiscal competition; the emission tax is set at a rate equal to the (national) marginal social damage of emissions; and public goods are provided suboptimally. (v) Under destination–destination regime: the output tax is ineffective as an instrument for fiscal competition; the emission tax is used not only for combating pollution but also for tax competition; the tax is set at a rate below the (national) marginal social damage of emissions; emissions are pushed above their closed-economy level; the provision of public goods are optimal.     

Competition Policy as Strategic Trade with Differentiated Products

The paper analyzes how countries use competition policy as a tool for strategic trade. In the model, two countries export to a third country. Each exporting country is endowed with a set of differentiated products. Each government chooses the number of exporters for its country and the products that each exporter sells in the first period, and a tax policy in the second period. Firms choose prices or quantities independently in the third period. In the unique subgame‐perfect equilibrium, both countries group all their products within a single firm—the “national champion policy.” We study the implication of different assumptions about the timing of the game.     

Endogenous timing in private and mixed duopolies with emission taxes

This paper examines an endogenous timing game in product differentiated duopolies under price competition when emission tax is imposed on environmental externality. We show that a simultaneous-move (sequential-move) outcome can be an equilibrium outcome in a private duopoly under significant (insignificant) environmental externality, but this result can be reversed in a mixed duopoly. We also show that when environmental externalities are significant, public leadership yields greater welfare than private leadership, and that public leadership is more robust than private leadership as an equilibrium outcome. Finally, we find that privatization can result in a public leader becoming a private leader, but this worsens welfare.     

A Cournot Mechanism for Pollution Control under Asymmetric Information

The contribution of this paper is to show that a simple nonlinear tax can achieve a long-run socially optimal level of pollution without the regulator knowing marginal abatement costs. Firms are charged their differential contribution to total damages, evaluated at the upper margin of current emissions. This induces a Cournot game in pollution levels. We show that the Nash equilibrium exists, corresponds to the socially optimal long-run output and emission levels and number of firms, is stable, and can be reached by iterative computations where conjectures are formed using a linear estimator based on past emission levels.     

Dynamic Games of Environmental Policy in a Global Economy: Taxes versus Quotas

The effects of environmental policy on the global environment as an international public good with a stock externality and national welfare are examined in a model with trade in a polluting commodity. The welfare effects of environmental policy, decomposed into terms of trade, abatement cost, and environmental damage effects, induce governments to adopt a strategic use of their policy measures. In the absence of international cooperation on environmental policy, it is demonstrated that the emission tax game brings about larger strategic distortions than the emission quota game.     

Leadership in Public Good Provision: A Timing Game Perspective

We address in this paper the issue of leadership when two governments provide public goods to their constituencies with cross‐border externalities as both public goods are valued by consumers in both countries. We study a timing game between two different countries: before providing public goods, the two policymakers non‐cooperatively decide their preferred sequence of moves. We establish conditions under which a first‐ or second‐mover advantage emerges for each country, highlighting the role of spillovers and the complementarity or substitutability of public goods. As a result, we are able to prove that there is no leader when, for both countries, public goods are substitutable. When public goods are complements for both countries, each of them may emerge as the leader in the game. Hence a coordination issue arises. We use the notion of risk‐dominance to select the leading government. Finally, in the mixed case, the government for whom public goods are substitutable becomes the leader.     

Strategic Environmental Policy under Free Entry of Firms

With direct trade barriers banned, governments may be tempted to use indirect policy tools to interfere with trade, such as environmental taxes. The author uses a model of an endogenous market structure, where the number of firms is determined by a zero-profit condition in one country but is exogenously given in the other country, to show that a government harboring a fixed number of firms fails to affect aggregate supply, and therefore has little scope for improving domestic environmental quality (if pollution is transboundary). Moreover, owing to the absence of a terms-of-trade effect, it diverts from the classical strategic tax rule. The author argues that both governments arguably fix their equilibrium emission taxes "too low," meaning that tax competition plausibly leads to "ecological dumping."     

Firms' financial choices and thin capitalization rules under corporate tax competition

Thin capitalization rules have become an important element in the corporate tax systems of developed countries. This paper sets up a model where national and multinational firms choose tax-efficient financial structures and countries compete for multinational firms through statutory tax rates and thin capitalization rules that limit the tax-deductibility of internal debt flows. In a symmetric tax competition equilibrium, each country chooses inefficiently low tax rates and inefficiently lax thin capitalization rules. We show that a coordinated tightening of thin capitalization rules benefits both countries, even though it intensifies competition via tax rates. When countries differ in size, the smaller country not only chooses the lower tax rate but also the more lenient thin capitalization rule.     

ENDOGENOUS TIMING AND STRATEGIC CHOICE: THE COURNOT‐BERTRAND MODEL

Cournot establishes a Nash equilibrium to a duopoly game under output competition; Bertrand finds a different Nash equilibrium under price competition. Both treat the strategic choice variable (output versus price) and the timing of play as exogenous. We investigate Cournot‐Bertrand models where one firm competes in output and the other competes in price in both static and dynamic settings. We also develop a general model where both the timing of play and the strategic choice variables are endogenous. Consistent with the conduct of Honda and Scion, we show that Cournot‐Bertrand behaviour can be a Nash equilibrium outcome.     

A spatial tax harmonization model

Policies to harmonize value-added tax rates are controversial in the European Union. This paper formulates a multi-country model over a one-dimensional space as a non-cooperative Nash game, in which each country aims at maximizing its tax revenue, subject to the constraint that its tax rate lies within a given common band. Then we examine the effects of changes in the common band on tax rates, tax revenues and the number of cross-border shoppers at Nash equilibrium. We also analyze the effects of geographical variation in country size and location.     

How Profit Shifting May Increase the Tax Burden of Multinationals: A Simple Model with Discrete Investment Choices

This paper models a Stackelberg tax setting game between two revenue‐maximizing countries which compete for the location of a single production plant owned by a multinational firm. We introduce the possibility of profit‐shifting activities by the multinational firm and investigate how a change in the costs of profit shifting affects equilibrium tax rates, revenue, and the tax burden of the multinational firm. We show that in most cases, tax rates of the two countries will be higher under profit shifting than without. If the costs for profit shifting are not too low, the strategic adjustment of profit tax rates will typically harm the multinational firm.     

Trade Liberalization and Environmental Regulation on International Transportation

Incorporating pollution emissions from international transportation into a model of strategic trade and environmental policies, we investigate the effect of trade liberalization and environmental regulation on national welfare and the environment. Our model includes imperfectly competitive markets for international transportation and final products. We find that trade liberalization may reduce each country's welfare unless some level of environmental regulation on international transportation is in place. When international trade is liberalized initially, a mutual increase in the common emission tax rates may improve each country's welfare. However, when international trade is highly protected initially, imposing an emission tax may reduce welfare.     

Tax Rate Harmonization,Renegotiation, and Asymmetric Tax Competition for Profits with Repeated Interaction

This paper analyzes a model of corporate tax competition with repeated interaction and with strategic use of profit shifting within multinationals. We show that international tax coordination is more likely to prevail if the degree of asymmetry in terms of productivity differences between countries is smaller, or if concealment costs of profit shifting are larger when the tax authorities adopt grim‐trigger strategies. Allowing for renegotiation in the tax harmonization process requires more patient tax authorities to implement tax harmonization as a weakly renegotiation‐proof equilibrium. In this case, we find somewhat paradoxical situations where higher costs of profit shifting make tax harmonization less sustainable.     

Does a Recession Call for Less Stringent Environmental Policy? A Partial-Equilibrium Second-Best Analysis

This paper analyses second-best optimal environmental policy responses to real and financial shocks in a two-period partial equilibrium model with heterogeneous firms, an environmental externality, and credit constraints. We show that, to alleviate credit constraints and encourage investment, the second-best optimal emission tax falls short of marginal emission damages. The optimal response to shocks depends on how the shock affects the size of the environmental and credit market failures and the effectiveness of the tax in alleviating these market failures. Under mildly restrictive assumptions on functional forms, the optimal response to a (persistent) negative productivity shock or a tightening of credit is to reduce the emission tax. Our results are informative for how climate change policy should optimally change with the business cycle.