The relative efficiency of market-based environmental policy instruments with imperfect compliance

We study how the relative cost efficiency of three market-based instruments—emission taxes, tradable permits and output taxes—is influenced by the combination of accounting for incomplete compliance and pre-existing labor taxes. First, accounting for violations makes the policy instruments less effective so that environmental damages have to be larger to justify a policy. Secondly, including fines in a second-best setting provides a new means of collecting government revenues and of lessening existing tax distortions. We show that the relative position of grandfathered tradable permits vis-à-vis emission taxes improves considerably when incomplete compliance is incorporated in a second-best setting. A simple AGE model illustrates the results.      

The marginal cost of public funds is one at the optimal tax system

This paper develops a Mirrlees framework with skill and preference heterogeneity to analyze optimal linear and nonlinear redistributive taxes, optimal provision of public goods, and the marginal cost of public funds (MCF). It is shown that the MCF equals one at the optimal tax system, for both lump-sum and distortionary taxes, for linear and nonlinear taxes, and for both income and consumption taxes. By allowing for redistributional concerns, the marginal excess burden of distortionary taxes is shown to be equal to the marginal distributional gain at the optimal tax system. Consequently, the modified Samuelson rule should not be corrected for the marginal cost of public funds. Outside the optimum, the marginal cost of public funds for distortionary taxes can be either smaller or larger than one. The findings of this paper have potentially important implications for applied tax policy and social cost–benefit analysis.     

Gender-based and couple-based taxation

In this paper, I explore the optimal taxation of singles and couples in an economy with bargaining couples. The government is concerned with the redistribution of income from individuals with high utility to individuals with low utility, recognizing that some individuals live in couple households where resources are unevenly distributed. I analyze how redistributive linear income taxes, which depend on either gender or household composition (or both) impact the distribution of utility within and across households. An interesting implication arising from the interaction between the model elements is that even though between-group lump-sum transfers always favor women, when the bargaining power of men is high, women are subject to a higher tax rate; this in contrast to previous analyses of gender-based taxation. My quantitative analysis demonstrates that the welfare effects of gender-based taxation are sizable and even larger when taxes depend on the composition of the household.     

Monetary Policy in a Forward-Looking Input–Output Economy

This paper examines the implications for monetary policy of sticky prices in both final and intermediate goods in a New Keynesian model. Both optimal policy under commitment and discretionary policy under simple loss functions are studied. Household utility losses under alternative loss functions are compared; additionally, the robustness of policy performance to model and shock misperceptions and parameter uncertainty is examined. Targeting inflation in both consumer and intermediate goods performs better than targeting inflation in one sector; targeting price levels of both final and intermediate goods performs significantly better. Moreover, targeting price levels in both sectors yields superior robustness properties.     

Assessing the maintenance of savings sufficiency over the first decade of retirement

The goal of securing adequate resources in retirement dominates the ongoing debate regarding social security reforms designed to accommodate the demographic transformation and to provide minimum income security to retired workers. Policy proposals concerned with the implication of future public sector costs emphasize greater individual responsibility for meeting retirement resource goals. Proposals seeking minimum living standards imply expansion of public fiscal liabilities. We contribute to this discussion by examining the extent to which a cohort of US retirees were able to meet resource adequacy standards at the time of retirement, and to maintain initial levels of resources over the first decade of retirement. We compare annuitized wealth, including social security and pension wealth, to two adequacy standards—a household’s preretirement earnings (reflecting the goal of maintaining preretirement consumption) and the US poverty threshold (reflecting the goal of meeting minimum consumption standards). We analyze the relationship of individual characteristics to changes in resource adequacy over time, and identify the characteristics of those who gain and lose resources over the first decade of retirement. Finally, we simulate the effects on adequacy and public sector benefit costs of four social insurance policy proposals. This research was partially supported by a grant from the Social Security Administration. Additional support was provided by the Institute for Research on Poverty, the Graduate School and the Center for Demography and Ecology all at the University of Wisconsin-Madison. Conclusions represent those of the authors alone and not of the funding agencies.     

Household Production and the Design of the Tax Structure

This paper amalgamates two topical issues in the economics ofcommodity taxation: the general case for non-uniformity, andthe tax treatment of commodities that are either inputs to householdproduction or close substitutes for household produced goods.Assuming a redistributive objective and that the government canimplement a non-linear income tax system and linear commoditytaxes we investigate if the existence of household productiongenerates a natural case for non-uniform commodity taxation.Four main results are reported. First, when the set of commoditiesis partitioned into consumption goods and input goods, and commoditytaxes are restricted to being within-group uniform, the compositecommodity theorem can be used to characterize the optimal commoditytaxes. Secondly, sufficient conditions for within-group uniformcommodity taxes to be fully optimal are derived. Thirdly, weargue that an input good should be taxed at a higher rate thangeneral consumption if and only if the degree of complementarityin household production (between the input good and a time-input)is larger than the degree of complementarity in consumption (betweengeneral consumption and the household produced good). Finally,we show that under simple normality, a market substitute forthe household-produced good should be taxed at a lower rate thangeneral consumption. The intuition for the last two results isthat the suggested pattern of taxation discourages ``do-it-yourself'behaviour, which relaxes the self-selection problem.     

On the International Dimension of Fiscal Policy

This paper analyzes the international dimension of fiscal policy in a small open economy framework. We consider the case in which the government finances its spending by levying distortionary taxes and issuing state‐contingent debt. While in a closed economy taxes are essentially invariant, in an open economy taxes can be as volatile as output. This is because the presence of a terms of trade externality introduces efficient fluctuations in the consumption–leisure wedge driven by movements in the real exchange rate. As a result, the optimal fiscal rule suggests that taxes should be varied to replicate these fluctuations.     

Ramsey meets Thünen: the impact of land taxes on economic development and land conservation

Land taxes can increase production in the manufacturing sector and enhance land conservation at the same time, which can lead to overall macroeconomic growth. Existing research emphasizes the non-distorting properties of land taxes (when fixed factors are taxed) as well as growth-enhancing impacts (when asset portfolios are shifted to reproducible capital). This paper furthers the neoclassical perspective on land taxes by endogenizing land allocation decisions in a multi-sector growth model. Based on von Thünen’s observation, agricultural land is created from wilderness through conversion and cultivation, both of which are associated with costs. In the steady state of our general equilibrium model, land taxes not only may reduce land consumption (associated with environmental benefits) but may also affect overall economic output, while leaving wages and interest rates unaffected. When labor productivity is higher in the manufacturing than in the agricultural sector and agricultural and manufactured goods are substitutes (or the economy is open to world trade), land taxes increase aggregate economic output. There is a complex interplay of conservation policy, technological change and land taxes, depending on consumer preferences, sectoral labor productivities and openness-to-trade. Our model introduces a new perspective on land taxes in current policy debates on development, tax reforms as well as forest conservation.     

The cost of capital and optimal financing policy in a dynamic setting

This paper revisits the Modigliani–Miller propositions on the optimal financing policy and cost of capital in a dynamic setting. In an environment without taxes and bankruptcy costs, the results are generally consistent with the Modigliani–Miller Propositions 1 and 2. However, the first proposition should be presented and interpreted more carefully, as given firm characteristics, there is only one optimal capital structure. Thus, a firm’s capital structure is relevant. A relaxation of assumptions about either taxes or bankruptcy costs leads to conclusions that are generally different from those in Modigliani and Miller (1958). The model predicts that leverage and sales-to-capital ratios decrease but firm size and capital stock increase with the subjective discount factor of the firm’s manager if there are taxes and bankruptcy costs. The empirical analysis supports these predictions.     

Optimal commodity taxation with duty-free shopping

International travellers are frequently offered the opportunity to purchase a certain quantity of goods duty-free. Individuals differ in their opportunities to benefit from duty-free shopping, and we focus on the implications of these differences for optimal commodity taxation within a version of the optimal tax model of Mirrlees (Review of Economic Studies, 38, 175–208, 1971). We show how duty-free alters the constraints on the use of commodity taxes to reduce the distortionary costs of income taxation or to reflect externalities. Beyond characterising optimal taxes in the duty-free regime, we discuss conditions under which allowing duty-free would increase or reduce social welfare.      

Pareto-improving bequest taxation

Altruistic parents may transfer resources to their offspring by providing education, and by leaving bequests. We show that in the presence of wage taxation, a small bequest tax may improve efficiency in an overlapping-generations framework with only intended bequests, by enhancing incentives of parents to invest in their children’s education. We also calculate an optimal mix of wage and bequest taxes with alternative parameter combinations. In all cases, the optimal wage tax rate is clearly higher than the optimal bequest tax rate, but the latter is generally positive when the required government revenue in the economy is sufficiently high. If educational investment is partly unobservable for the government, these results qualitatively hold also when allowing for education subsidies.     

Pawns and queens revisited: public provision of private goods when individuals make mistakes

This paper analyses the optimal tax policy and public provision of private goods when the government is paternalistic and has a redistributive objective. When individuals only differ with respect to their income-earning abilities, the publicly-provided goods should be overprovided, relative to the decentralised optimum, if society’s marginal valuation of them exceeds the individual valuation and if these goods are complements to labour supply. However, when the individuals also differ in terms of their valuation of the publicly-provided good, this simple conclusion does not hold. Optimal marginal income tax rates are shown to differ from the standard rules if publicly-provided goods and labour supply are related.      

Optimal Fiscal and Monetary Policy in Customer Markets

We present a model in which some goods trade in “customer markets” and advertising facilitates long‐lived relationships. We estimate the model on U.S. data and find a large congestion externality in the pricing of customer market goods. This motivates the analysis of optimal policy. Under a complete set of taxes, fiscal policy eliminates the externalities with large adjustments in tax rates on customer markets goods, while labor tax volatility remains low. Constraining the instruments to the interest rate and labor tax, the optimal labor tax displays large and procyclical fluctuations, but monetary policy is little changed compared to a model with no customer markets.     

Correspondence between lifetime minimum wealth and utility of consumption

We establish when the two problems of minimizing a function of lifetime minimum wealth and of maximizing utility of lifetime consumption result in the same optimal investment strategy on a given open interval O in wealth space. To answer this question, we equate the two investment strategies and show that if the individual consumes at the same rate in both problems—the consumption rate is a control in the problem of maximizing utility—then the investment strategies are equal only when the consumption function is linear in wealth on O, a rather surprising result. It then follows that the corresponding investment strategy is also linear in wealth and the implied utility function exhibits hyperbolic absolute risk aversion.      

Laffer effect, gross substitution, marginal cost of public funds and the level property of public good provision

This paper examines the Laffer effect in the Ramsey tax-model with linear consumption taxes and a representative consumer. It is assumed that the private goods and the public good are weakly separable. It is demonstrated that if all of the private goods are weak gross complements to each other, then the Laffer effect does not exist, in other words, higher tax rates can always achieve more tax revenue. In contrast, if all of the private goods are strict gross substitutes, then the Laffer effect does exist. Moreover, if all of the private goods are weak gross substitutes, then the government cannot fully acquire the leisure endowment through taxes on consumption goods. We also show that gross substitution works to raise the marginal cost of public funds.     

Optimal fiscal and monetary policy in an economy without capital

This paper is concerned with the structure and time-consistency of optimal fiscal and monetary policy in an economy without capital. In a dynamic context, optimal taxation means distributing tax distortions over time in a welfare-maximizing way. For a barter economy, our main finding is that with debt commitments of sufficiently rich maturity structure, an optimal policy, if one exists, is time-consistent. In a monetary economy, the idea of optimal taxation must be broadened to include an ‘inflation tax’, and we find that time-consistency does not carry over. An optimal ‘inflation tax’ requires commitment by ‘rules’ in a sense that has no counterpart in the dynamic theory of ordinary excise taxes. The reason time-consistency fails in a monetary economy is that nominal assets should, from a welfare-maximizing point of view, always be taxed away via an immediate inflation in a kind of ‘capital levy’. This emerges as a new possibility when money is introduced into an economy without capital.     

Tax-tariff reform with costs of tax administration

As is broadly recognised, the straightforward application of the Diamond–Mirrlees (1971) production efficiency theorem implies that when lump-sum taxation is not available, then it is optimal for the government in a small open economy to rely on taxes on the net demand of households rather than on border taxes to finance its resource requirements. However, the theorem does not hold when taxation is associated with administrative costs. The present paper explores the implications for optimal taxation and for desirable directions of tax-tariff reform of taking into account the costs of tax administration in countries at different levels of economic development. The paper clarifies the reasons for, and lends support to, the criticism by Stiglitz (Presentation to Congress of International Institute of Public Finance, Prague, 2003) of the IMF and the World Bank’s recommendation to developing countries to adopt VAT to replace border taxes.      

Optimal investment and production decisions and the value of the firm

We explore the effects of uncertainty on a firm that can respond by modifying its investment or production schedule (or both simultaneously) to variations in output price. Investment may increase capacity and/or reduce costs. We consider a firm with finite resources.Our model uses option theory instead of the more traditional net present value framework. One of the early papers using this approach is Brennan and Schwartz (1985) in which an investment project to extract a finite natural resource is valued. In that paper, the value of the firm is a function of two state variables, the finite resource to be extracted (output to be produced in the future) and the commodity spot price. In order to maximize firm value, the manager can respond by modifying one control variable, the production level. In our model we handle instead three state variables (spot price, resources, accumulated investment) and two control variables (production rate and investment rate), and solve numerically.We obtain both the value and the optimal policy of a firm that has investment projects that increase capacity and/or reduce costs and illustrate optimal policies as resources and available investments decrease over the life of the firm. Firms may start by only investing, then invest and produce, to end only producing.We thank Scott Wo, the referee and the editor for their comments and suggestions. Cortázar and Lowener acknowledge the financial support from FONDECYT and FONDER.     

Shadow-Pricing Interpretation of the Pigovian Rule for the Optimal Provision of Public Goods: A Note

The Pigovian rule for the optimal public goods provision with distortionary taxation is given a new interpretation. It relates the Pigovian rule to project evaluation rules in terms of shadow prices. Our formula for the Pigovian rule is compared with that given by existing literature for cases in which commodity taxes are set optimally to articulate the implications of their results. This approach also renders a clear insight on the nature of resource allocation and income redistribution effect involved in the public goods provision in a heterogeneous-consumers economy.     

An evasive topic: theorizing about the hidden economy

This paper reviews some central issues that arise in theorizing about tax evasion decisions and the hidden economy. It starts from the Allingham and Sandmo (J. Public Econ. 1:323–338, 1972) modeling of the tax evasion decision as a choice under uncertainty based on expected utility maximization and risk aversion. It goes on to discuss alternative specifications of the taxpayer’s preferences with particular regard to the explanation of the extensive margin, i.e. the decision on whether or not to engage in tax evasion. It extends the model to the case of variable labor supply with work in both official and black labor markets. It then considers the application of the theory to taxes on wealth and income from capital, indirect tax evasion, and smuggling. It also includes a consideration of general equilibrium effects and of the problems that evasion causes for the theory of optimal income and commodity taxes. It concludes with a brief discussion of the implications of tax evasion for economic policy in the welfare state.