The Hidden Wealth of Nations: The Scourge of Tax Havens by Gabriel Zucman, translated from the French by Teresa Lavender Fagan, with a foreword by Thomas Piketty University of Chicago Press, 129 pp., $20.00 The Price We Pay a film directed by Harold Crooks, inspired by Brigitte Alepin’s 2010 book La Crise fiscale qui vient (The Coming Fiscal Crisis)

In some circles, “redistribution” of wealth has become a dirty word, and recent efforts to make the tax system more progressive have run into serious political resistance, above all from Republicans. But whatever your political party, you are unlikely to approve of the illegal use of tax havens. As it turns out, a lot of wealthy people in the United States, Europe, and elsewhere have been hiding money in foreign countries—above all, Switzerland, Luxembourg, and the Virgin Islands. As a result, they have been able to avoid paying taxes in their home countries. Until recently, however, officials have not known the magnitude of that problem.

But people are paying increasing attention to it. A vivid new documentary, The Price We Pay, connects tax havens, inequality, and insufficient regulation of financial transactions. The film makes a provocative argument that a new economic elite—wealthy managers and holders of capital—is now able to operate on a global scale, outside the constraints of any legal framework. In a particularly chilling moment, it shows one of the beneficiaries of the system cheerfully announcing on camera: “I don’t feel any remorse about not paying taxes. I think it’s a marvelous way in life.”

Gabriel Zucman, who teaches at the University of California at Berkeley, has two goals in his new book, The Hidden Wealth of Nations: to specify the costs of tax havens, and to figure out how to reduce those costs. While much of his analysis is technical, he writes with moral passion, even outrage; he sees tax havens as a “scourge.” His figures are arresting. About 8 percent of the world’s wealth, or $7.6 trillion, is held in tax havens. In 2015, Switzerland alone held $2.3 trillion in foreign wealth. As a result of fraud from unreported foreign accounts, governments around the world lose about $200 billion in tax revenue each year. Most of this amount comes from the evasion of taxes on investment income, but a significant chunk comes from fraud on inheritances. In the United States, the annual tax loss is $35 billion; in Europe, it is $78 billion. In African nations, it is $14 billion.

The fractions of wealth held abroad are highly variable. In Europe, it is about 10 percent. In African and Latin countries, it is much higher—between 20 percent and 30 percent. In Russia, it is a whopping 52 percent. It follows that while tax havens hit wealthy nations hardest in absolute terms, they can have especially destructive effects on poorer or developing countries, because such a high percentage of their money is offshore. Zucman does not explain why this is so, but…