This paper provides general and empirically implementable sufficient statistics formulas for optimal nonlinear tax systems in the presence of preference heterogeneity. We study unrestricted tax systems on income and savings (or other commodities) that implement the optimal direct-revelation...

People have long debated whether state-run lotteries exploit the poor or are a win-win that generates enjoyment and government revenues. We study socially optimal lottery design in an optimal taxation framework with biased consumers and estimate sufficient statistics for optimal policy. Lottery...

We incorporate a general model of frictions into the bunching-based elasticity estimator. This model relies on fewer parameters than the conventional approach, replacing bunching window bounds with a single "lumpiness parameter," while matching rich observed bunching patterns such as...

The prominent but unproven intuition that preference heterogeneity reduces re-distribution in a standard optimal tax model is shown to hold under the plausible condition that the distribution of preferences for consumption relative to leisure rises, in terms of first-order stochastic dominance,...

A common objection to "sin taxes"--corrective taxes on goods like cigarettes, alcohol, and sugary drinks, which are believed to be over-consumed--is that they fall disproportionately on low-income consumers. This paper studies the interaction between corrective and redistributive motives in a...

Calculating the welfare implications of changes to economic policy or shocks requires economists to decide on a normative criterion. One approach is to elicit the relevant moral criteria from real-world policy choices, converting a normative decision into a positive inference, as in the recent...

A common objection to "sin taxes"--corrective taxes on goods that are thought to be overconsumed, such as cigarettes, alcohol, and sugary drinks--is that they often fall disproportionately on low-income consumers. This paper studies the interaction between corrective and redistributive motives...

Taxes on sugar-sweetened beverages are growing in popularity and have generated an active public debate. Are they a good idea? If so, how high should they be? Are such taxes regressive? People in the U.S. and some other countries consume remarkable quantities of sugar-sweetened beverages, and...

Economists typically check the robustness of their results by comparing them across plausible ranges of parameter values and model structures. A preferable approach to robustness--for the purposes of policymaking and evaluation--is to design policy that takes these ranges into account. We modify...

An influential result in modern optimal tax theory, the Atkinson and Stiglitz (1976) theorem, holds that for a broad class of utility functions, all redistribution should be carried out through labor income taxation, rather than differential taxes on commodities or capital. An important...