Privatizing profits and socializing losses with smoothly operating capital markets

We design a three periods two overlapping generations model to challenge some of the prevailing views regarding privatizing profits and socializing losses in an environment characterized by smoothly operating capital markets. The model has a secondary asset market impaired by adverse selection and moral hazard. An exogenous stochastic shock renders some assets toxic. In the basic setup a tax financed scheme which removes toxic assets exacerbates the moral hazard problem and worsens the resource misallocation. However, introducing a “search for yield” with dynamic spillover effects and/or considering a labor market with some friction makes intervention welfare improving.     

Household bargaining and the design of couples’ income taxation

This paper studies the design of couples’ income taxation when consumption and labor supply decisions within the couple are made by maximizing a weighted sum of the spouses’ utilities; bargaining weights are given but specific to each couple. Information structure and labor supply decisions follow the Mirrleesian tradition. However, while the household's total consumption is publicly observable, the consumption levels of the individual spouses are not observable. With a utilitarian social welfare function we show that the expression for a spouses’ marginal income tax rate includes a “Pigouvian” (paternalistic) and an incentive term. The Pigouvian term favors a marginal subsidy (tax) for the high-weight (low-weight) spouse, whose labor supply otherwise tends to be too low (high). The sign and the magnitude of the incentive term depends on the weight structure across couples. In some cases both terms have the same sign and imply a positive marginal tax for the low-weight spouse (who may be female) and a negative one for the high-weight spouse (possibly the male). This is at odds with the traditional Boskin and Sheshinski results. Our conclusions can easily be generalized to more egalitarian welfare functions. Finally, we present numerical simulations based on a calibrated specification of our model. The calculations confirm that the male spouse may well have the lower (and possibly even negative) marginal tax rate.     

Economic growth,corruption and tax evasion

In this paper, we explore tax revenues in a regime of widespread corruption in a growth model. We develop a Ramsey model of economic growth with a rival but non-excludable public good which is financed by taxes which can be evaded via corrupt tax inspectors. We prove that the relationship between the tax rate and tax collection, in a dynamic framework, is not unique, but is different depending on the relevance of the “shame effect”. We show that in all three cases — “low, middle and high shame” countries, the growth rate increases as the tax rate increases up to a threshold value, after which the growth rate begins to decrease as the tax rate increases. But, for intermediate tax rates, the rate of growth for “low shame” countries is lower than that of “uniform shame” countries which is, in turn, lower than that of “high shame” countries. This happens because the growth rate is more sensitive to variations of t in an honest country rather than in a corrupt country.     

Fixed-term employment contracts in an equilibrium search model

We develop a theoretical model of firm dynamics and unemployment and characterize equilibria with tenure dependent separation taxes. The model is a version of the Lucas and Prescott island model with undirected search. Two equivalent decentralizations are considered: one with spot labor markets and one with long-term employment relations. We model “temporary contracts” as the special case of a separation tax that only applies to workers with tenure higher than J. While in principle these contracts require a J-dimensional state space, equilibrium allocations solve a simple dynamic programming problem characterized by two-dimensional inaction set(s).     

Social Security Contributions and the Business Cycle

We investigate business cycle dynamics of social security contributions (SSC), by far the largest labor tax distortion in the OECD. In most countries, we find a negative covariation of SSC tax burdens with levels and growth of GDP at business cycle frequencies and lower. In detrended data, a decline of GDP of 1% is associated with a 0.05-0.2 percentage point increase in the aggregate SSC burden, measured as a fraction of the wage bill. For most countries, average marginal SSC rates exceed, but track average rates. Changes in average SSC tax burdens are largely due to adjustments in statutory tax schedules rather than cyclical shifts in earnings distributions. Our findings are consistent with Esping-Andersen's (1990) typology of social welfare states. In some countries, SSC rates co-move with measures of the “labor wedge” (Chari et al. 2007, Brinca et al. 2016).     

Micro-simulation and Normative Policy Evaluation: An Application to Some EU Tax Benefits Systems

In this work we explore the impact of alternative tax benefits systems on household welfare. The framework of our analysis is the theory of optimal taxation with the distribution of potential wages replaced by the distribution of household abilities. The latter has been calculated by inversion of the household's utility maximization problem. This methodology has then been implemented in order to compare the tax benefits systems of France and the United Kingdom. We have employed a behavioral micro‐simulation model that has been applied on samples extracted from the “Households Budget Survey 1989” of INSEE and from the “Family Expenditure Survey” of ONS.     

Second-best optimal taxation of capital and labor in a developing economy

As commercial integration reduces the reliance on foreign trade taxation, raising tax revenue has become a major concern for the governments of developing economies. This paper examines how the tax burden in a developing economy should be distributed between capital income and labor income. We study a two-sector model, where the traditional sector is “informal” and consequently cannot be taxed by the government. In this setup, we find that the optimal (second-best) tax structure in order to raise a certain amount of revenue requires to tax capital income at least as much as labor income, and possibly more.     

AN OPTIMAL TAX TREATMENT OF LEVIATHAN*

This paper constructs a model in which taxation and public expenditure decisions are made by two decision makers: a “benevolent planner,” who treats all consumers equally in the measurement of welfare; and a “Leviathan planner,” who places more weight on the utilities of “favored consumers.” The benevolent planner can restrict the Leviathan planner's power to tax, but cannot control the allocation of expenditures between desirable public goods and income transfers to favored consumers. Several types of tax restrictions are shown to be welfare-improving from the benevolent planner's viewpoint. These restrictions include a reduction in the size of the tax base, although administrative costs already prevent the Leviathan planner from taxing all commodities.     

A TALE OF TAX POLICIES IN OPEN ECONOMIES

To evaluate fiscal policy reforms for Euro‐area countries, this article develops and calibrates a small open economy model. Debt reduction reforms require higher tax rates in the short term in exchange for lower rates in the long term as the debt‐servicing burden falls. Using the capital income tax to implement such a policy leads to welfare gains; the consumption tax, a very small welfare gain; and the labor income tax, a welfare loss. Holding fixed the long‐run debt–output ratio, offsetting a lower capital income tax with either a higher labor income or consumption tax generally yields welfare gains.     

A Public Choice Approach to Strategic and Nonstrategic Environmental Policy

In this paper we take a public choice perspective on strategic environmental policy and international environmental agreements. We examine cooperative and noncooperative environmental policies under governments that are either welfare maximizers (“good dictators”) or tax revenue maximizers (“Leviathans”). We show that Leviathans can perform better in terms of welfare and that good dictators can set higher taxes. We then analyze international environmental agreements and show that the breakdown of environmental cooperation can indeed lead to a welfare gain for all signatory countries. Considering a delegation game between governments, we find that a Pareto‐superior Leviathan outcome can be the unique Nash equilibrium.     

The effects of tax reform on labor supply, tax revenue and welfare when tax avoidance matters

We examine how tax avoidance in the form of trade in well-functioning asset markets affects the study of labor supply. We discuss the implications for tax policy analysis, and we show that a failure to account for avoidance responses may lead to huge errors when analyzing how tax reform affects labor supply, tax revenue and the welfare cost of taxation. Our model may explain a number of otherwise hard to understand dimensions of taxpayer response.     

Time zones,shift working and international outsourcing

We build a trade model with two identical countries located in different time zones and one sector with intermediate differentiated goods produced in two successive stages. We introduce shift working disutility that raises night wage and firms that “virtually” outsource foreign labor. We found that firms only outsource if outsourcing costs are relatively low and shift disutility is high. When outsourcing occurs, it generates the highest level of welfare among production modes. Intermediate values of shift working disutility generate the lowest level of welfare. Outsourcing and domestic labor are substitutes at the firm level and complements at the economy level.     

Progressive Tax and Inequality in a Unionized Economy*

In this paper, we develop a heterogeneous-agent, endogenous growth model of a unionized economy with distinct progressive tax schedules on labor and capital income. With time preference heterogeneity, the effective labor force, balanced growth, and income inequality are endogenously determined, and these interact with each other. A reduction in the degree of progressive labor tax yields a “double-dividend” in terms of reducing income inequality and boosting economic growth, while capital income progressivity displays the usual growth–inequality trade-off. Particularly, the double-dividend effect becomes more pronounced when unionization is declined or trade unions become more wage-oriented, leading to the so-called “Cheshire cat” phenomenon.     

我国两税合并的社会经济福利效应分析

2007年年初国务院批准了合并内、外资企业的所得税,税率为25%,并从2008年1月1日起实施。外资企业在经历了20年的税收优惠政策之后,开始承担与国内企业相同的所得税税率。统一企业所得税率在自由竞争的经济环境中有增加社会福利的效应。但由于我国仍处在经济转型过程中,内资企业和外资企业在管理体制和运行机制上有很大的不同。因此,统一税率对我国总的社会福利的影响可能与西方发达国家的影响有所不同。文章通过对我国内外资企业生产方程的不同设定来反映内外资企业的不同特点并考察统一税率对我国劳动力配置、资本需求及社会整体福利可能带来的影响。用2004-2006年的统计数据进行了模拟计算,结果表明,两税合并短期内使我国社会整体福利略有下降,在考虑国有企业冗员的情况下,两税合并使社会福利在三种情形下分别下降0.18%、0.17%和0.13%;而考虑国有企业经理负责制时,两税合并使社会福利分别下降0.25%、0.21%和0.15%。但从长期看,两税合并最终会使我国的社会福利有所增加。     

STATUS QUO IN THE WELFARE ANALYSIS OF TAX REFORMS

The welfare analysis of tax reforms most often consists of comparing the post‐reform distribution of individual welfare with the pre‐reform distribution or possibly that obtained from another reform as if they were completely independent. Such an “anonymous” approach does not take into account “changes” in individual situations, generally the main source of contention in any tax reform debate. This paper proposes a welfare criterion that allows comparison of reforms while taking into account individual status quo—i.e. pre‐reform—situations. This is done by extending standard utilitarian social welfare criteria to the case where individual utilities depend on initial income and income change.     

ON THE DISTRIBUTIONAL CONSEQUENCES OF CHILD LABOR LEGISLATION*

This article studies the effects of child labor legislation on human capital accumulation and the distribution of wealth and welfare. We calibrate our model to U.S. data circa 1880 and find that the consequences of restricting child labor or providing tax‐financed education depend on the main source of individual household income. Households with significant financial assets unambiguously lose from government intervention, whereas high‐wage workers benefit most from a child labor ban, and low‐wage workers benefit most from free education. Introducing free education results in substantial welfare gains, whereas a child labor ban induces small welfare losses.     

Does work pay in France? Monetary incentives, hours constraints, and the guaranteed minimum income

This paper uses a representative sample of individuals on France's main welfare program (the Revenu Minimum d'Insertion, or RMI) to estimate monetary incentives for employment among welfare recipients. Based on the estimated joint distribution of wages and hours potentially offered to each individual, we compute potential gains from working in a very detailed manner. Relating these gains to observed employment, we then estimate a simple structural labor supply model. We find that potential gains are almost always positive but very small on average, especially for single mothers, because of the high implicit marginal tax rates embedded in the system. Employment rates are sensitive to incentives with extensive margin elasticities for both men and women usually below one. Conditional on these elasticities, simulations indicate that existing policies devoted to reducing marginal tax rates at the bottom of the income distribution, such as the intéressement earnings top-up program, have little impact in this population due to their very limited scope. The negative income tax (Prime pour l'emploi), seems to be an exception.     

Optimal fiscal decentralization: Redistribution and welfare implications

The literature has been inconclusive regarding the welfare effects of fiscal decentralization (FD), defined here as the extent to which local governments collect and spend local tax revenues. We present an original model to investigate formally the distributional and welfare implications of FD. In contrast to the standard approach that compares the implications of full FD with that of centralization, we consider that the central government chooses the level of FD to maximize welfare in a heterogeneous country. Noncooperatively, local governments choose their tax collection effort to maximize local utility. We show that an increase in the tax rate leads optimal FD to increase so as to compensate for the welfare loss from decreasing optimal local tax effort. Hence, welfare and income distribution improve in FD at its intermediate, rather than extreme, levels. We coin this result as the decentralization-Laffer curve. As regional spillovers increase, FD is less desirable as it deteriorates welfare and income distribution. This finding provides a novel support for the decentralization theorem and contributes to the fiscal policy debate.     

Revenue Recycling and the Welfare Effects of Road Pricing

This paper explores the interactions between taxes on work-related traffic congestion and pre-existing distortionary taxes in the labor market. A congestion tax raises the overall costs of commuting to work and discourages labor force participation. The resulting welfare loss in the labor market can easily exceed the Pigouvian welfare gain from internalizing the congestion externality. However, if congestion tax revenues are used to reduce labor taxes, the net impact on labor supply is positive, and this can raise the overall welfare gain from the congestion tax by around 100 percent. Nonetheless the optimal congestion tax still equals the Pigouvian tax.
JEL classification R 41; H 21; H 23