Thomas Piketty's widely-noted and bestselling book, Capital in the Twenty-First Century, does much to advance our empirical understanding of rising high-end wealth concentration, which is one of the central issues of our time. But its theoretical approach and policy recommendations differ...

Neither income, consumption, nor wealth is an "ideal" tax base, or one that plausibly identifies what one really should want to tax. Rather, they are best justified as imperfect stand-ins for some underlying (but unobservable) metric of inequality that may be relevant to distributive justice...

The current age of inequality is also an age of extensive tax and related public economics scholarship about inequality. Three prominent aspects of recent research especially stand out. The first concerns empirical measurement of economic inequality, as it has changed over time. The second...