America’s runaway inequality has an engine: our unjust tax system.

Even as they became fabulously wealthy, the ultra-rich have seen their taxes collapse to levels last seen in the 1920s. Meanwhile, working-class Americans have been asked to pay more. The Triumph of Injustice presents a forensic investigation into this dramatic transformation, written by two economists who revolutionized the study of inequality. Eschewing anecdotes and case studies, Emmanuel Saez and Gabriel Zucman offer a comprehensive view of America’s tax system, based on new statistics covering all taxes paid at all levels of government. Their conclusion? For the first time in more than a century, billionaires now pay lower tax rates than their secretaries.

Blending history and cutting-edge economic analysis, and writing in lively and jargon-free prose, Saez and Zucman dissect the deliberate choices (and sins of indecision) that have brought us to today: the gradual exemption of capital owners; the surge of a new tax avoidance industry; and the spiral of tax competition among nations. With clarity and concision, they explain how America turned away from the most progressive tax system in history to embrace policies that only serve to compound the wealth of a few.

But The Triumph of Injustice is much more than a laser-sharp analysis of one of the great political and intellectual failures of our time. Saez and Zucman propose a visionary, democratic, and practical reinvention of taxes, outlining reforms that can allow tax justice to triumph in today’s globalized world and democracy to prevail over concentrated wealth.

Emmanuel Saez is professor of economics and director of the Center for Equitable Growth at the University of California, Berkeley. His research focuses on tax policy and inequality from both theoretical and empirical perspectives. With Thomas Piketty, he has constructed long-run historical series of income inequality in the United States that have been widely discussed in public debate. He received his PhD in economics from MIT in 1999. He was awarded the John Bates Clark Medal of the American Economic Association in 2009 and a MacArthur Fellowship in 2010.

Gabriel Zucman is professor of economics and public policy at the University of California, Berkeley. His research analyzes the accumulation and distribution of wealth through global and historical perspectives. He received his PhD in economics from the Paris School of Economics in 2013. He was awarded the Bernácer Prize in 2018 and a Sloan Research Fellowship in 2019. He is the author of The Hidden Wealth of Nations: The Scourge of Tax Havens, which has been translated into eighteen languages.