By Thomas Piketty
Wealth inequality across three centuries
Subject
Themes
The distribution of wealth follows a structural logic that, left unchecked, drives capitalist economies toward extreme inequality. Two fundamental laws govern this process. The first establishes that the share of national income flowing to capital owners depends on the rate of return on capital multiplied by the capital/income ratio. The second shows that when growth slows, the capital/income ratio rises mechanically, because accumulated savings loom ever larger relative to annual output. Together, these laws explain why slow-growing societies tend toward domination by inherited wealth.
The distribution of wealth follows a structural logic that, left unchecked, drives capitalist economies toward extreme inequality. Two fundamental laws govern this process. The first establishes that the share of national income flowing to capital owners depends on the rate of return on capital…
Capital in the Twenty-First Century arrived in the English-speaking world in 2014 (the French original appeared in 2013) and immediately became one of the most discussed works of economics in decades. Its impact extended far beyond academic circles, reaching policymakers, journalists, and general…
The single most important analytical insight is that when the rate of return on capital (r) exceeds the rate of economic growth (g), wealth tends to concentrate in fewer hands over time. This relationship, expressed as r > g, is not a theoretical abstraction but a historical regularity confirmed by…
Progressive taxation, in which tax rates rise with income or wealth, is the most powerful tool ever deployed to reduce economic inequality. Its history reveals that the relatively equal societies of the mid-twentieth century were not natural outcomes of market forces but deliberate political…
The nature of capital has undergone a profound transformation over three centuries, shifting from agricultural land to a complex portfolio of housing, financial assets, and business equity. This metamorphosis has reshaped the social meaning of wealth, the mechanisms through which it is accumulated…
The return of inheritance as a dominant force in wealthy economies poses a fundamental challenge to the meritocratic ideal. If the most reliable pathway to prosperity is being born into a wealthy family rather than working hard or displaying exceptional talent, then the social contract on which…
The social state, built on progressive taxation and universal public services, represents the most successful institutional framework ever constructed for managing the tensions inherent in capitalist economies. Its emergence in the twentieth century, its achievements during the postwar decades, and…
The distribution of wealth stands as one of the most contested and consequential questions in modern political economy. At its core lies the relationship between income and capital: national income represents the total flow of wages, profits, rents, and other earnings in a given year, while capital…
The capital/income ratio follows a dramatic arc across the twentieth century and into the twenty-first. In Europe, the ratio stood at six to seven years of national income on the eve of the First World War, reflecting centuries of accumulation by aristocratic and bourgeois families. The period from…
Inequality takes two fundamentally different forms: inequality of labour income and inequality of capital ownership. While both contribute to the overall distribution of resources, they operate through distinct mechanisms and produce very different levels of concentration. Labour income, which…
The trajectory of wealth concentration across three centuries reveals a persistent structural tendency toward extreme inequality, interrupted only by the extraordinary upheavals of the twentieth century. In France, the top decile owned roughly 80 to 90 per cent of total wealth throughout the…
The rise of extreme income inequality since the 1970s has been most dramatic in the United States, where the share of national income captured by the top decile climbed from about 33 per cent in the late 1970s to nearly 50 per cent by 2010. This represents a return to levels of concentration not…
Inheritance, once thought to be a relic of aristocratic societies, is returning as a dominant force in twenty-first-century economies. The annual flow of bequests and gifts relative to national income traces a dramatic arc. In nineteenth-century France, inheritance flows ran at 20 to 25 per cent of…
Progressive income taxation stands as one of the most powerful instruments ever devised for reducing inequality. Its history is surprisingly short: before the First World War, tax systems in most countries relied on indirect taxes (customs duties, excise taxes, sales taxes) and flat-rate property…
The central policy proposal is a progressive global tax on capital, levied annually on the net wealth of individuals. Such a tax would apply at graduated rates: perhaps 1 per cent on fortunes above one million euros, 2 per cent above five million, and still higher rates on billionaire-level wealth.…
By Thomas Piketty
Subject
Themes
The distribution of wealth follows a structural logic that, left unchecked, drives capitalist economies toward extreme inequality. Two fundamental laws govern this process. The first establishes that the share of national income flowing to capital owners depends on the rate of return on capital multiplied by the capital/income ratio. The second shows that when growth slows, the capital/income ratio rises mechanically, because accumulated savings loom ever larger relative to annual output. Together, these laws explain why slow-growing societies tend toward domination by inherited wealth.