Optimal taxation, social contract and the four worlds of welfare capitalism

Drawing from the formal setting of the optimal tax theory (Mirrlees 1971), the paper identifies the level of Rawlsianism of some European social planners starting from the observation of real data and redistribution systems and uses it to build a metric that allows measuring the degree of (dis)similarity of the redistribution systems analyzed. It must be considered as a contribution to the comparative research on the structure and typology of the Welfare State. In particular we consider the optimal taxation model that combines both intensive and extensive margins of labor supply, as suggested by Saez (2002) in order to assess the degree of decommodification of seven European welfare systems. We recover the shape of the social welfare function implicit in tax-benefit systems by inverting the model on actual effective tax rates, as if existing systems were optimal according to some Mirrleesian social planner. Actual distributions of incomes before and after redistribution are obtained using a pan-European tax-benefit microsimulation model. Results are discussed in the light of standard classifications of welfare regimes in Europe. There appears to be a clear coincidence of high decommodification willingness and high Rawlsianism in the Scandinavian, social-democratically influenced welfare states (Denmark). There is an equally clear coincidence of low decommodification willingness and utilitarianism in the Anglo-Saxon liberal model (UK) and in the Southern European welfare states (Italy and Spain). Finally, the Continental European countries (Finland, Germany and France) group closely together in the middle of the scale, as corporatist and etatist.optimal income taxation ; tax-benefit policy ; microsimulation ; comparative social policy analysis ; welfare state models

Microsimulation as a tool for evaluating redistribution policies

During the last twenty years, microsimulation models have been increasingly applied in qualitative and quantitative analysis of public policies. This paper provides a discussion on microsimulation techniques and their theoretical background as a tool for the analysis of public policies with particular attention to redistribution and social policies. Basic principles in using microsimulation models and interpreting their results are analyzed, with particular emphasis on tax incidence, redistribution and poverty analysis. Social welfare analysis permitted by microsimulation techniques is also discussed. Finally, the paper points to limits of present approaches and directions for future research.microsimulation ; evaluation of public policies ; optimal taxation ; poverty and inequality

Optimal nonlinear labor income taxation in dynamic economies

The aim of this paper is to explore the characteristics of the optimal nonlinear labor income tax in dynamic economies with information asymmetries and human capital accumulation. We develop a dynamic optimal income tax model in which agent's productivity evolves over time according to two different factors: an exogenous component and a learning by doing process endogenous to the fiscal policy. The latter is determined by the government, maximizing in the initial period a social welfare function capturing some level of aversion to inequality. We characterize analytically the first order condition driving the optimal tax schedule in a model in which agents choose the consumption and labor supply patterns that maximize their lifetime utility function. We show that the inclusion of the endogenous evolution of productivities into the tax problem changes the results with respect to the static framework à la Mirrlees (1971). We find that the optimal tax strategy balances social marginal costs of increasing marginal tax rates with social marginal benefits of doing so.dynamic optimal income taxation ; private information ; learning by doing

Optimal taxation, social contract and the four worlds of welfare capitalism

Drawing from the formal setting of the optimal tax theory (Mirrlees 1971), the paper identifies the level of Rawlsianism of some European social planners starting from the observation of real data and redistribution systems and uses it to build a metric that allows measuring the degree of (dis)similarity of the redistribution systems analyzed. It must be considered as a contribution to the comparative research on the structure and typology of the Welfare State. In particular we consider the optimal taxation model that combines both intensive and extensive margins of labor supply, as suggested by Saez (2002) in order to assess the degree of decommodification of seven European welfare systems. We recover the shape of the social welfare function implicit in tax-benefit systems by inverting the model on actual effective tax rates, as if existing systems were optimal according to some Mirrleesian social planner. Actual distributions of incomes before and after redistribution are obtained using a pan-European tax-benefit microsimulation model. Results are discussed in the light of standard classifications of welfare regimes in Europe. There appears to be a clear coincidence of high decommodification willingness and high Rawlsianism in the Scandinavian, social-democratically influenced welfare states (Denmark). There is an equally clear coincidence of low decommodification willingness and utilitarianism in the Anglo-Saxon liberal model (UK) and in the Southern European welfare states (Italy and Spain). Finally, the Continental European countries (Finland, Germany and France) group closely together in the middle of the scale, as corporatist and etatist.Cet article veut contribuer au débat concernant la typologie d'Etat Providence (Esping-Andersen, 1990). Dans cette optique, on réfléchit àave; une théorisation formalisée s'appuyant sur la littérature de la redistribution optimale (Mirrlees 1971) pour une analyse comparée des Etats Providence européens qui puisse tester le degré de "démarchandisation" (c'est-àave;-dire le degré auquel les droits sociaux permettent aux personnes de conserver leurs moyens d'existence sans dépendre du marché) de plusieurs systèmes de redistribution européens en prenant en compte de façon explicite les contraintes d'efficacité auxquelles le planificateur social est soumis. Les résultats obtenus contribuent àave; une meilleure compréhension des implications économiques et sociales des politiques de redistribution

Sharing resources within the household: a multi-country microsimulation analysis of the determinants of intrahousehold "strategic weight" differentials and their distributional outcomes

Equal intra-household sharing is still assumed by the vaste majority of applied analyses in welfare economics. Few pieces of work have tried to depart from the equal sharing hypothesis, but their impact has been limited by lack of data or restricted application to special cases. This paper proposes a new framework to derive sharing rules based on individual bargaining power. The latter is defined for each household member as the share of resources gained by the household due to his/her presence. The causes of power differentials and their impact on income distribution are analysed in four EU countries presenting significantly different tax-benefit systems: Finland, Italy, Germany and the United Kingdom.intra-household sharing ; tax-benefit systems ; microsimulation

Tax-benefit revealed social preferences

This paper inverts the usual logic of applied optimal income taxation. It starts from the observed distribution of income before and after redistribution and corresponding marginal tax rates. Under a set of simplifying assumptions, it is then possible to recover the social welfare function that would make the observed marginal tax rate schedule optimal. In this framework, the issue of the optimality of an existing tax-benefit system is transformed into the issue of the shape of the social welfare function associated with that system and whether it satisfies elementary properties. This method is applied to the French redistribution system with the interesting implication that the French redistribution authority either has a rather low estimate of the labor supply elasticity or does not give positive social weights to the richest tax payers.social welfare function ; optimal income tax ; microsimulation ; optimal inverse problem

Strategic weight within couples: a microsimulation approach

Individual strategic weight plays an important role in the intra-household allocation of resources; however, empirical studies invariably find such weight difficult to define in a plausible and computable way, given the available data. This paper proposes a framework for the calculation of household members' strategic weight that can be easily computed using a microsimulation model. The index proposed for each member as the share of resources the household would lose should he or she abandon it. The causes of strategic weight differentials are analysed in four EU countries with significantly different employment structure and tax-benefit systems (Finland, Germany, Italy and the United Kingdom), using EUROMOD, an integrated EU-15 microsimulation model.individual strategic weight ; microsimulation ; tax-benefit systems

Education, redistributive taxation and confidence

We consider redistributional taxation between people with and without human capital if education is endogenous and if individuals differ in their perceptions about own ability. Those who see their ability as low like redistributive taxation because of the transfers it generates. Those who see their ability as high may also like redistributive taxation because it stops other people receiving education and increases the quasi rents on their own human capital. It is surprising that this rather indirect effect can overcompensate them for the income loss from taxation and make the overconfident want higher taxes than the less confident do. The results, however, turn out to be in line with empirical evidence on the desired amount of redistribution among young individuals.education ; redistribution ; confidence

Sharing resources within the household: a multi-country microsimulation analysis of the determinants of intrahousehold "strategic weight" differentials and their distributional outcomes

Equal intra-household sharing is still assumed by the vaste majority of applied analyses in welfare economics. Few pieces of work have tried to depart from the equal sharing hypothesis, but their impact has been limited by lack of data or restricted application to special cases. This paper proposes a new framework to derive sharing rules based on individual bargaining power. The latter is defined for each household member as the share of resources gained by the household due to his/her presence. The causes of power differentials and their impact on income distribution are analysed in four EU countries presenting significantly different tax-benefit systems: Finland, Italy, Germany and the United Kingdom.La répartition égalitaire des ressources à l'intérieur du ménage est l'hypothèse la plus communément employée dans l'économie du bien être. A ce jour, très peu de travaux ont tenté de la dépasser. Les résultats sont cependant limités du fait du manque de données appropriées ou du manque de généralité des modèles. Cet article propose un nouveau cadre d'analyse permettant de dériver la règle de partage à partir du pouvoir de négociation. Ce pouvoir est défini pour chaque composant du ménage comme la partie de ressources obtenue par le ménage grâce à sa présence. Les déterminants des différentiels de pouvoir et leurs impacts sur la distribution des revenus sont analysés pour quatre pays européens présentant des différences significatives en termes de systèmes de redistribution : Finlande, Italie, Allemagne et Royaume Uni

Discrete choice models of labour suppluy, behavioural microsimulation and the Spanish tax reform

In this paper, we demonstrate the potential of behavioural microsimulation models as powerful tools for the ex ante evaluation of public policies. The subject of our analysis is the impact of recent Spanish Income Tax reforms on efficiency and household and social welfare. We also analyze the likely effects of some basic income - flat tax and vital minimum - flat tax schemes. The analysis is carried out using a microsimulation model in which labour supply is explicitly taken into account. Instead of following the traditional continuous approach (Hausman 1981, 1985a, and 1985b), we estimate the direct utility function using the methodology proposed by Van Soest (1995). Our data come from a sample of Spanish individuals in the 1995 wave of the EC Household Panel. We show that in the Spanish case, the redistribution policies considered have only little impact on the efficiency of the economy. On the contrary, they strongly affect social welfare.microsimulation models ; evaluation of public policies