Pollution Externalities in a Model of Endogenous Fertility and Growth

An endogenous growth model with human capital formation, pollution caused by production of consumption goods, and endogenous fertility decisions made by altruistic agents with infinite horizons is presented. Consequences for optimal policy of modelling fertility as an explicit decision variable are examined. Because ordinary lump-sum transfers to individuals are no longer neutral, either revenue from a pollution tax must be redistributed to dynasties (working as an implicit tax on child births), or lump-sum transfers must be supplemented with an explicit fertility tax. Alternatively, the government can avoid distortions of the fertility decisions by maintaining an appropriate public debt. When abatement is highly productive, it can be optimal to subsidize fertility in order to increase total production.     

Environmental Tax Reform in a Small Open Economy With Structural Unemployment

The paper examines the effects of an environmental tax reform in a small open economy with decentralised wage bargaining, monopolistically competitive firms and equilibrium unemployment. There is a tradable and a non-tradable sector and all firms use labour as well as an imported polluting factor of production (energy). A key result is that a tax on energy, recycled to reduce the payroll tax, reduces unemployment if there is a tradable sector wage premium. However, even if energy taxes may boost employment, welfare will not necessarily improve. Numerical simulations suggest that energy taxes in general provide an environmental dividend but also reduce real GDP.     

Dynamic fiscal policies and unemployment in a simple endogenous growth model

This paper analyzes the growth and employment effects of dynamic fiscal policies in an overlapping generations model with endogenous growth and imperfect labour markets. With balanced-budget policies, the modelled closed economy grows at a constant rate which is higher, the lower are the labour tax rate and the unemployment rate. Constant-flow budget policies are not feasible, while government Ponzi games are feasible only if economic agents have implausibly high savings rates. Furthermore, while constant-stock fiscal policies are sustainable, an increase in the debt-to-capital ratio is accompanied by higher taxes, a rise in unemployment and lower economic growth. JEL Classification E24 · J51 · H63 · O41     

Labor tax reform, unemployment, and search

A key obstacle to reducing payroll taxes in many industrialized and transition countries is the direct revenue loss to the government that it implies. This paper studies a simple and practical labor tax reform of reducing a payroll tax and increasing a progressive wage tax that keeps the marginal tax wedge unchanged. Such a strategy increases employment, reduces the equilibrium unemployment rate, and increases public revenue as long as workers do not have all the bargaining power in wage negotiations. Moreover, welfare rises if workers’ bargaining power is sufficiently large to exceed a critical value determined by the second-best Hosios condition.      

Environmental taxation and the double dividend: A reader's guide

There has been considerable debate as to whether the revenue-neutral substitution of environmental taxes for ordinary income taxes might offer a double dividend: not only (1) improve the environment but also (2) reduce certain costs of the tax system. This paper articulates different notions of double dividend and examines the theoretical and empirical evidence for each. It also connects the double-dividend issue with principles of optimal environmental taxation in a second-best setting.A weak double-dividend claim-that returning tax revenues through cuts in distortionary taxes leads to cost savings relative to the case where revenues are returned lump sum-is easily defended on theoretical grounds and (thankfully) receives wide support from numerical simulations. The stronger versions contend that revenueneutral swaps of environmental taxes for ordinary distortionary taxes involve zero or negative gross costs. Theoretical analyses and numerical results tend to cast doubt on the strong double-dividend claim, although the theoretical case is not air-tight and the numerical evidence is mixed.     

Social Security,Unemployment, and Growth

The paper develops an overlapping generations model that highlights interactions between social security, unemployment and growth. The social security system has two components: old age pensions and unemployment insurance. Pensions have a direct effect on economic growth. Both pensions and unemployment benefits influence equilibrium unemployment caused by wage bargaining. Since unemployment deteriorates growth, both types of social security have an indirect negative effect on growth.JEL Code: E24, H55, J51     

Is sustainable growth optimal?

This paper analyzes sustainable growth in a stochastic environment, with human extinction as a possible outcome. The basic constraint of sustainability is that consumption never decreases over an infinite horizon, which requires that the probability of extinction be maintained at zero. We show that this problem can be examined in a standard optimal-growth model. Under certain conditions, the solution of this problem is a corner solution with probability of survival equal to one, at the cost of economic growth. These conditions depend on the initial development level and on the elasticity of utility with respect to consumption. In some circumstances, which depend on the social discount rate, optimal-growth paths do not exist. In these situations, the sustainable-growth concept has a clear autonomy with respect to the usual optimality criterion.     

Environmental Tax Competition in the Presence of Multinational Firms

We study the design of environmental policy in a two country model with an imperfectly competitive polluting industry. We show that when the firms are multinational, non-cooperative policy design leads to too severe emission taxation regardless of the mode of competition. The reason is twofold. First, when firms are multinational, changes in environmental policy do not influence the market shares of the firms. Second, when designing their policies, national governments ignore profits accruing to foreign shareholders of multinational firms.     

Environmental regulation and the location of polluting industries

Does international tax competition in the environmental field lead to undesirably low levels of environmental regulation and to unacceptable disruptions of environmental quality? The paper tries to answer this question in a noncompetitive partial-equilibrium framework. There is one firm that wishes to establish a plant in one ofn countries. The paper shows that tax competition may lead to emission taxes that are either too low or too high. They may be so high that the investment is not undertaken, although this would be optimal if the countries cooperated. On the other end of the spectrum, a scenario in which taxes are driven to zero becomes possible if there are substantial transfrontier pollution effects.     

Unemployment,Government Spending and the Laffer Effect*

The paper studies the effects of income tax rate changes in a general equilibrium model with frictional unemployment. Laffer curve effects, by which a tax rate reduction may increase the level of government spending or its share in output, are shown to be possible under certain conditions. These are the presence of unemployment benefit payments, government budget balance through fiscal spending adjustment and limited quantitative importance of labour reallocation costs. Endogenous government spending acts as a fiscal accelerator if the fiscal burden of unemployment benefit payments is large, but reduces the employment effects of tax rate cuts if it is low.     

Entropy,environment, and endogenous economic growth

This paper investigates the proper modeling of the interaction between economic growth and environmental problems, summarizes under which conditions unlimited economic growth with limited natural resources is feasible, and describes how sustainable growth can be achieved. It synthesizes the results from various environmental endogenous growth models.The physical dimension and the value dimension of economic activity have to be treated as conceptually distinct. Accumulation of natural variables is bounded due to biophysical laws (notably, the entropy law). However, economic value may grow through the substitution of reproducible human inputs for natural inputs. The properties of knowledge, which is the primary human input, do not contradict unlimited new knowledge creation.     

中国现行环境保护税费政策评析及建议

环境保护是政府公共服务的一个重要领域。改革开放以来,中国采取了一系列与环境相关的税收和收费政策,取得了积极效果。但是,随着经济的快速增长,现行政策愈来愈难以适应现实需求。我国应设立单独的环境税,完善现行收费政策。     

Consumption Taxation and Endogenous Growth in a Model with New Generations

This article studies the implications of consumption taxation on capital accumulation in a one-sector endogenous growth model with finite horizons. A tax on consumption, when tax revenues are lump-sum rebated to consumers, redistributes income between living generations and future, still unborn, generations, and therefore depresses aggregate consumption and raises saving, stimulating capital accumulation and economic growth. If however the resources from taxation are used for financing unproductive public spending, the effect of the consumption tax on the endogenous growth rate disappears as no intergenerational redistribution of income occurs. Finally, a consumption tax hike accompanied by a compensatory reduction of public debt increases long-run economic growth and reduces the consumption-output ratio. Our results on consumption taxation differ substantially from those obtained within the endogenous growth literature.     

Cyclical fiscal policy,credit constraints,and industry growth

What are the effects of cyclical fiscal policy on industry growth? We show that industries with a relatively heavier reliance on external finance or lower asset tangibility tend to grow faster (in terms of both value added and of labor productivity growth) in countries that implement fiscal policies that are more countercyclical. We reach this conclusion using Rajan and Zingales׳s (1998) difference-in-difference methodology on a panel data sample of manufacturing industries across 15 OECD countries over the period 1980–2005.     

Taxation, Public Policy, and Dynamics of Unemployment

This paper provides an overview of the key issues relating to taxation, public policy and the dynamics of unemployment.It takes issue with the widely held view that generous social insurance schemes and the associated highpayroll taxes have been the major cause of the high unemployment rates which have persisted in Europe over thepast 15 years. It puts forward a framework for a theory of adjustment, based on the portfolio theory of the riskaverse firm and the efficiency wage theory of labor markets. This is used to explain why in the onset of a downturn,the hiring rate may lag the layoff rate, thus giving rise to rising unemployment rates. It is also shown to provideguidance as to policies which enhance the ability of firms to bear risks and which reduce costs of hiring and firing.The paper argues that while policies which increase severance or layoff costs may be well intended they mayactually serve to exacerbate the magnitude of employment fluctuations. Similarly, unemployment compensation,which is designed to ease the burden on those who are unemployed, may lead to higher levels of equilibriumunemployment. These programs can be restructured in ways which simultaneously ease the short-run burden ofthose thrown into unemployment, while reducing the adverse impact of these programs on the unemployment rate.     

确定情形下的货币、利率与内生经济增长

通过对消费和资本投入施加预付现金约束,在内生经济增长框架（AK模型）下建立了一个封闭的货币经济体,并构建了以利率为核心的分析框架。研究表明,在确定情形下,利率的改变会影响代理人的消费与投资,并进而对价格和经济总体的消费与投资产生影响,货币当局可以通过利率以间接控制货币供给;当货币供给变化时,经济总体的消费与投资等变量也会发生变化,货币不是中性的;通过比较最优利率政策与Friedman法则,发现两者惟一的区别仅在于最初期利率的不同。     

Shareholder taxation and aggregate dividend payout: Evidence from the tax reform act of 1986

The effect of shareholder taxation on corporate dividend policy is a major controversy in financial economics. The Tax Reform Act of 1986 eliminated the statutory tax disadvantage of dividends versus long-term capital gains for individual shareholders. Using aggregate time series data I find evidence that corporate dividend payout has become more generous in the period after tax reform.     

Tax Rate Uncertainty, Investment Decisions, and Tax Neutrality

This article deals with the effects of tax rate uncertainty (TRU) on individual investment behavior. We show that under risk neutrality as well as under risk aversion, increased TRU has an ambiguous impact on investment, depending on the investment project's structure of cash flows and depreciation deductions. Although the investment effects are small the popular view that tax policy uncertainty depresses real investment is rejected. Further, tax neutrality in the light of tax policy uncertainty is defined more precisely. Neutrality results for the Johansson-Samuelson tax and the cash flow tax that are known from certainty are confirmed under TRU.