Carbon Leakage, the Green Paradox and Perfect Future Markets

Policies of lowering carbon demand may aggravate rather than alleviate climate change (green paradox). In a two-period three-country general equilibrium model with finite endowment of fossil fuel one country enforces an emissions cap in the first or second period. When that cap is tightened the extent of carbon leakage depends on the interaction of various parameters and elasticities. Conditions for the green paradox are specified. All determinants of carbon leakage resulting from tightening the first-period cap work in opposite direction when the second-period cap is tightened. Tightening the second-period cap does not necessarily lead to the green paradox.carbon leakage, green paradox, emissions cap

Corrective Taxation for Curbing Pollution and Promoting Green Product Design and Recycling

In this paper we consider a competitive economy with flows of materials from extraction via recycling to landfilling which exhibits distortions due to pollution, external landfilling costs and inefficient product design. The allocative impact of tax-subsidy policies aiming at internalizing the distortions are analyzed when the pertinent tax-subsidy rates were successively raised from zero toward their efficiency restoring levels. Promoting recyclability by greening the product design stimulates recycling as expected. But it also increases primary material extraction and - possibly - the total waste flow, and it reduces the recycling ratio.Green design, pollution, recycling, material

Labor Markets and Capital Tax Competition

Ogawa et al. (2006) analyze capital tax competition in a fixed-wage approach and show that the original results of Zodrow and Mieszkowski (1986) are not preserved in the presence of unemployment. In the present paper we challenge this view and investigate capital tax competition for some arbitrary institutional setting of the labor market. We find that if the labor market is characterized by some efficient bargaining solution, the results of Zodrow and Mieszkowski (1986) are preserved.capital tax competition, unemployment, efficient bargains

Efficient Management of Insecure Fossil Fuel Imports through Taxing (!) Domestic Green Energy?

A small open economy produces a consumer good, green and black energy, and imports fossil fuel at an uncertain price. Unregulated competitive markets are shown to be inefficient. The implied market failures are due to the agents’ attitudes toward risk, to risk shifting and the uniform price for both types of energy. Under the plausible assumptions that consumers are prudent and at least as risk averse as the producers of black energy, the risk can be efficiently managed by taxing emissions and green energy. The need to tax (!) green energy contradicts the widespread view that subsidization of green energy is an appropriate means to enhance energy security in countries depending on risky fossil fuel imports.price uncertainty, black energy, green energy, fossil fuel

Interjurisdictional Spillovers, Decentralized Policymaking and the Elasticity of Capital Supply

This paper points to the important role which the elasticity of aggregate capital supply with respect to the net rate of return to capital plays for the efficiency of policymaking in a decentralized economy with mobile capital and spillovers among jurisdictions. In accordance with previous studies, we show that under the assumption of a fixed capital supply (zero capital supply elasticity) the decentralized policy choice is optimal. If the capital supply elasticity is strictly positive, however, capital tax rates are inefficiently low in the decentralized equilibrium.decentralized policymaking, spillovers, capital supply elasticity

Increases in Risk and the Welfare State

According to many observers, the world is currently getting riskier along many of its dimensions. In this paper we analyse how the welfare state, i.e., social insurance that works through redistributive taxation, should deal with this trend. We distinguish between risks that can be insured by the welfare state and such than cannot (background risks). Insurable risks can be reduced either by individual self-insurance or, through pooling, by social insurance. Both ways are costly in terms of income foregone. We show: (i) Self-insurance will be higher the more costly is the welfare state and the larger are background or insured risks. (ii) Full risk coverage by the welfare state can only be optimal in a costless welfare state. (iii) The optimal size of the welfare state is larger the higher are the risks that it cannot insure. The impact of the size of risks that can be insured is, however, unclear.welfare state, background risks, social insurance

Corporate Income Taxation of Multinationals in a General Equilibrium Model

This paper contributes to the discussion on Separate Accounting versus Formula Apportionment in the corporate income taxation of multinational enterprises (MNEs). The innovation of the analysis is that we consider a general equilibrium tax competition model with an endogenously determined world interest rate. Under the principle of Separate Accounting, it turns out that corporate tax rates may be inefficiently low or high, while under Formula Apportionment corporate tax rates are always inefficiently low. These results are true independent of whether the number of countries is small or large. They reverse the insights obtained by previous studies under the assumption of an exogenously given world interest rate.corporate income tax, Separate Accounting, Formula Apportionment

Pricing the Ecosystem and Taxing Ecosystem Services: A General Equilibrium Approach

In an integrated dynamic general equilibrium model of the economy and the ecosystem humans and wildlife species compete for land and prey biomass. We introduce a competitive allocation mechanism in both submodels such that economic prices and ecosystem prices guide the allocation in the economy and in the ecosystem, respectively. We distinguish the scenarios of an open accessible habitat and a privately owned habitat. In both scenarios efficiency requires different corrective taxes/subsidies to internalize consumption services externalities. In the case of an open access habitat additional sources of inefficiency are the divergence of prices for biomass and land in both subsystems. Finally, we determine values of all components of the ecosystem in an efficient steady state with special emphasis on the role and the interplay of ecosystem and economic prices.land, biomass, ecosystem services

Tax-Competition with Involuntary Unemployment

In the present paper we extend the classical tax-competition framework of Zodrow and Mieszkowski (1986) by modelling involuntary unemployment and by allowing for labour taxation as a second source of public funds. For a large class of production functions (including CES), it turns out that tax competition is characterized by underprovision of public goods, and by positive taxes on both labour and capital. We thus conclude that the results of Zodrow and Mieszkowski survive some important and substantial modifications of the framework, and are thus more general than recently suggested elsewhere.tax competition, capital and labour taxation, involuntary unemployment, efficient bargains

Efficient CO2 Emissions Control with National Emissions Taxes and International Emissions Trading

In a group of countries like the European Union all countries seek to achieve their national CO2 emissions target by a joint emissions trading scheme covering some part of their economies (trading sector) and by a national emissions tax in the rest of their economies (nontrading sector). Applicable are also emissions taxes overlapping with the trading scheme that can either be freely chosen or are inert. Welfare-maximizing governments determine tax rates and the tradable-permits budget. It is shown that efficiency requires not to levy overlapping emissions taxes and to set the tax rate in the nontrading sector equal to the permit price. In the small-country case emissions control turns out to be efficient if tax rates in the trading sector are flexible. Otherwise it is second-best to violate cost effectiveness and to choose an excessive endowment of tradable permits. If countries are large and optimal tariffs cannot be applied, emissions taxes or subsidies (!) are shown to serve as a perfect surrogate; efficiency cannot be attained unless there is a central authority mandating cost effectiveness and banning overlapping taxes. Fiscal externalities are specified and the countries’ welfare in the large and small country case is compared.emissions taxes, emissions trading, international trade