This paper examines the optimal response of monetary and fiscal policy to a decline in aggregate demand. The theoretical framework is a two-period general equilibrium model in which prices are sticky in the short run and flexible in the long run. Policy is evaluated by how well it raises the...

We highlight and explain eight lessons from optimal tax theory and compare them to the last few decades of OECD tax policy. As recommended by theory, top marginal income tax rates have declined, marginal income tax schedules have flattened, redistribution has risen with income inequality, and...

The workhorse model of optimal taxation strongly recommends tagging, but its use in policy is limited. I argue that this puzzle is a symptom of a more fundamental problem. Conventional theory neglects the diverse normative criteria with which, as extensive evidence has shown, most people...

Robust support for corporate income taxation is a puzzle for standard tax theory because the tax's incidence is uncertain and unreliable. We propose a resolution: if the corporate tax is seen as a benefit-based tax, its normative appeal depends on the correspondence between its incidence 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...

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...

Empirical research suggests that parents' economic resources affect their children's future earnings abilities. Optimal tax policy therefore treats future ability distributions as endogenous to current taxes. We model this endogeneity, calibrate the model to match estimates of the...

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,...

This paper uses U.S. local areas as a laboratory to test whether the Great Recession depressed 2015 employment. In full-population longitudinal data, I find that exposure to a 1-percentage-point-larger 2007-2009 local unemployment shock caused working-age individuals to be 0.4 percentage points...

This paper tests whether the 2003 dividend tax cut--one of the largest reforms ever to a U.S. capital tax rate--stimulated corporate investment and increased labor earnings, using a quasi-experimental design and U.S. corporate tax returns from years 1996-2008. I estimate that the tax cut caused...