The purpose of this article is to integrate the class of preferences developed by Gul and Pesendorfer into the theory of optimal redistributive taxation with heterogenous consumers and asymmetric information. The consumers are inclined to over-spend on a commodity for which they experience temptation (TP good). Resisting that temptation gives rise to a utility cost. This cost provides two novel motives for influencing the consumption and labor supply choices; improving the welfare (by reducing the utility cost of exercising self-control) and providing the government with a novel channel via which tax policy can be used to relax a binding self-selection constraint. The welfare motive implies a positive tax on the TP good, as well as a positive (negative) marginal labor income tax rate if the consumer's marginal valuation of leisure exceeds (falls short of) the marginal valuation of leisure that arises if the consumer would succumb to the temptation. We use iso-elastic and logarithmic utility functional form specifications to exemplify when the self-selection channel may lead to higher/lower commodity and marginal labor income taxes.

Tax systems raise large amounts of revenue for funding public sector's activities, and tax/transfer policy, together with public provision of education, health care, and social services, play a crucial role in treating the symptoms and the causes of poverty. The normative analysis is crucial for tax/transfer design because it makes it possible to assess separately how changes in the redistributive criterion of the government, and changes in the size of the behavioural responses to taxes and transfers, affect the optimal tax/transfer system. Optimal tax theory provides a way of thinking rigorously about these trade-offs. Written primarily for graduate students and researchers, this volume is intended as a textbook and research monograph, connecting optimal tax theory to tax policy. It comments on some policy recommendations of the Mirrlees Review, and builds on the authors work on public economics, optimal tax theory, behavioural public economics, and income inequality. The book explains in depth the Mirrlees model and presents various extensions of it. The first set of extensions considers changing the preferences for consumption and work: behavioural-economic modifications (such as positional externalities, prospect theory, paternalism, myopic behaviour and habit formation) but also heterogeneous work preferences (besides differences in earnings ability). The second set of modifications concerns the objective of the government. The book explains the differences in optimal redistributive tax systems when governments - instead of maximising social welfare - minimise poverty or maximise social welfare based on rank order or charitable conservatism social welfare functions. The third set of extensions considers extending the Mirrlees income tax framework to allow for differential commodity taxes, capital income taxation, public goods provision, public provision of private goods, and taxation commodities that generate externalities. The fourth set of extensions considers incorporating a number of important real-word extensions such as tagging of tax schedules to certain groups of tax payers. In all extensions, the book illustrates the main mechanisms using advanced numerical simulations.

This guideline provides updated global, evidence-informed recommendations on the intake of free sugars to reduce the risk of NCDs in adults and children, with a particular focus on the prevention and control of unhealthy weight gain and dental caries. The recommendations in this guideline can be used by policy-makers and programme managers to assess current intake levels of free sugars in their countries relative to a benchmark. They can also be used to develop measures to decrease intake of free sugars, where necessary, through a range of public health interventions. Examples of such interventions and measures that are already being implemented by countries include food and nutrition labelling, consumer education, regulation of marketing of food and non-alcoholic beverages that are high in free sugars, and fiscal policies targeting foods and beverages that are high in free sugars. This guideline should be used in conjunction with other nutrient guidelines and dietary goals, in particular those related to fats and fatty acids (including saturated fatty acids and trans-fatty acids), to guide development of effective public health nutrition policies and programmes to promote a healthy diet.

Based on the findings of a commission chaired by James Mirrlees, this volume presents a coherent picture of tax reform whose aim is to identify the characteristics of a good tax system for any open developed economy, assess the extent to which the UK tax system conforms to these ideals, and recommend how it might be reformed in that direction.

Optimal tax design attempts to resolve a well-known trade-off: namely, that high taxes are bad insofar as they discourage people from working, but good to the degree that, by redistributing wealth, they help insure people against productivity shocks. Until recently, however, economic research on this question either ignored people's uncertainty about their future productivities or imposed strong and unrealistic functional form restrictions on taxes. In response to these problems, the new dynamic public finance was developed to study the design of optimal taxes given only minimal restrictions on the set of possible tax instruments, and on the nature of shocks affecting people in the economy. In this book, Narayana Kocherlakota surveys and discusses this exciting new approach to public finance. An important book for advanced PhD courses in public finance and macroeconomics, The New Dynamic Public Finance provides a formal connection between the problem of dynamic optimal taxation and dynamic principal-agent contracting theory. This connection means that the properties of solutions to principal-agent problems can be used to determine the properties of optimal tax systems. The book shows that such optimal tax systems necessarily involve asset income taxes, which may depend in sophisticated ways on current and past labor incomes. It also addresses the implications of this new approach for qualitative properties of optimal monetary policy, optimal government debt policy, and optimal bequest taxes. In addition, the book describes computational methods for approximate calculation of optimal taxes, and discusses possible paths for future research.

Behavioral economics questions the basic underpinnings of economic theory, showing that people often do not act consistently in their own self-interest when making economic decisions. While these findings have important theoretical implications, they also provide a new lens for examining public policies, such as taxation, public spending, and the provision of adequate pensions. How can people be encouraged to save adequately for retirement when evidence shows that they tend to spend their money as soon as they can? Would closer monitoring of income tax returns lead to more honest taxpayers or a more distrustful, uncooperative citizenry? Behavioral Public Finance, edited by Edward McCaffery and Joel Slemrod, applies the principles of behavioral economics to government's role in constructing economic and social policies of these kinds and suggests that programs crafted with rational participants in mind may require redesign. Behavioral Public Finance looks at several facets of economic life and asks how behavioral research can increase public welfare. Deborah A. Small, George Loewenstein, and Jeff Strnad note that public support for a tax often depends not only on who bears its burdens, but also on how the tax is framed. For example, people tend to prefer corporate taxes over sales taxes, even though the cost of both is eventually extracted from the consumer. James J. Choi, David Laibson, Brigitte C. Madrian, and Andrew Metrick assess the impact of several different features of 401(k) plans on employee savings behavior. They find that when employees are automatically enrolled in a retirement savings plan, they overwhelmingly accept the status quo and continue participating, while employees without automatic enrollment typically take over a year to join the saving plan. Behavioral Public Finance also looks at taxpayer compliance. While the classic economic model suggests that the low rate of IRS audits means far fewer people should voluntarily pay their taxes than actually do, John Cullis, Philip Jones, and Alan Lewis present new research showing that many people do not underreport their incomes even when the probability of getting caught is a mere one percent. Human beings are not always rational, utility-maximizing economic agents. Behavioral economics has shown how human behavior departs from the assumptions made by generations of economists. Now, Behavioral Public Finance brings the insights of behavioral economics to analysis of policies that affect us all.

Argues that public finance--the study of the government's role in economics--should incorporate principles from behavior economics and other branches of psychology.