Thomas Piketty’s research while affiliated with Process Systems Enterprise Limited and other places

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Publications (160)


Social Inequality: Result of Political Corruption
  • Preprint
  • File available

June 2024

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186 Reads

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Nitin Kumar Bharti

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Lucas Chancel

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Anmol Somanchi

The research shared by the World Inequality Database reveals alarming statistics for the backward classes/Dalits and tribals. This research highlights the growing socioeconomic inequality in the country. According to the report, a staggering 88.4% of the country's total wealth is held by the upper castes, while the Other Backward Classes (OBCs) hold a mere 9.0%, and the Scheduled Castes (SC) and Scheduled Tribes (ST) have an even smaller share of only 2.6%. This stark disparity highlights the deep-rooted socioeconomic inequalities prevalent in the country. In 2013, the OBCs had a 17.3% share of the nation's wealth, but this figure drastically decreased to just 9% by 2022. This significant decline underscores the diminishing economic power of the OBCs over the past decade. Small and medium-sized businesses, often the backbone of local economies and a vital source of livelihood for many in these communities, are continuously declining. This decline is exacerbated by governmental policies that have not favoured these enterprises. Furthermore, agriculture, traditionally the primary occupation for a significant portion of the population, is increasingly becoming a losing proposition. Farmers are facing immense challenges due to unfavourable government policies, leading to widespread devastation in rural areas. These policies have not only failed to support the agricultural sector but have also contributed to the financial ruin of countless farmers. The combination of declining business opportunities and a struggling agricultural sector paints a grim picture for the economic prospects of OBCs, SCs, and STs. It is imperative that policies be re-evaluated and restructured to address these inequalities and provide meaningful support to these communities. Ensuring fair economic opportunities and promoting sustainable growth in both small businesses and agriculture are crucial steps toward achieving a more equitable distribution of wealth and reducing socioeconomic disparities.

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Predistribution versus Redistribution: Evidence from France and the United States

April 2024

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28 Reads

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26 Citations

American Economic Journal Applied Economics

We construct series of posttax income for France over the 1900–2018 period and compare them with US series. We quantify the extent of redistribution—the reduction from pretax to posttax inequality—and estimate the contribution of redistribution in explaining differences in posttax inequality. We find that differences in pretax inequality drive most of the differences in posttax inequality between France and the United States, and that changes over time in both countries are mostly due to changes in pretax inequality. We highlight that the concept of redistribution can be empirically misleading for judging how policies reduce inequalities. (JEL D31, H23, H24, H31, I38)


Epilogue: Democratizing Fiscal Europe

August 2023

Fiscal federalism refers to the division or distribution of fiscal powers between different levels of government. In the context of the European Union, it provides a framework to explore the foundations and evolution of the Union’s (limited) fiscal powers across different areas of EU competence. The European Union is often seen as a legislative giant on clay feet, and one of the principal reasons for this feebleness is the lack of a significant fiscal capacity at the Union level. In the long term, the current state of affairs may prove itself unsustainable, in light of the need to ensure the macroeconomic stability of the Euro area and of calls to transfer further redistributional tasks to the European level. The ongoing—and highly topical—discussion on greater fiscal union has taken place mostly within the realm of the EU’s Economic and Monetary Union (EMU). This discussion should, however, be seen as a part of a bigger picture and, in historical perspective, one that also takes into account the role of fiscal matters in other areas of EU competence. This edited volume brings together an international and distinguished group of scholars to analyse the different legal dimensions of fiscal federalism within the European Union, from the various aspects of the single market (free movement, banking union, state aid, tax) to the EU’s budget and EMU.


Rethinking capital and wealth taxation

August 2023

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31 Reads

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39 Citations

Oxford Review of Economic Policy

This paper reviews recent developments in the theory and practice of optimal capital taxation. We emphasize three main rationales for capital taxation. First, the frontier between capital and labour income flows is often fuzzy, thereby lending support to a broad-based, comprehensive income tax. Next, the very notions of income and consumption flows are difficult to define and measure for top wealth holders where capital gains due to asset price effects dwarf ordinary income and consumption flows. Therefore the proper way to tax billionaires is a progressive wealth tax. Finally, as individuals cannot choose their parents, there are strong meritocratic reasons why we should tax inherited wealth more than earned income or self-made wealth for which individuals can be held responsible, at least in part. This implies that the ideal fiscal system should also include a progressive inheritance tax, in addition to progressive income and wealth taxes. We then confront our prescriptions with historical experience. Although there are significant differences, we argue that observed fiscal systems in modern democracies bear important similarities with this ideal triptych.


Income and Wealth Inequality in Hong Kong, 1981–2020: The Rise of Pluto-Communism?

October 2022

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33 Reads

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5 Citations

The World Bank Economic Review

The objective of this paper is to better understand the evolution and institutional roots of Hong Kong's growing economic inequality and political cleavages. By combining multiple sources of data (household surveys, fiscal data, wealth rankings, national accounts) and methodological innovations, two main findings are obtained. First, he evidence suggests a very large rise in income and wealth inequality in Hong Kong over the last four decades. Second, based on the latest opinion poll data, business elites, who carry disproportionate weight in Hong Kong's Legislative Council, are found to be more likely to vote for the pro-establishment camp (presumably to ensure that policies are passed that protect their political and economic interests). This paper argues that the unique alliance of government and business elites in a partially democratic political system is the plausible institutional root of Hong Kong's rising inequality and political cleavages.





Twenty Years and Counting: Thoughts about Measuring the Upper Tail

March 2022

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52 Reads

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6 Citations

The Journal of Economic Inequality

This article first describes the main developments in measuring the upper tail of the income and wealth distributions over the last twenty years. Second, it points out some of the key methodological challenges and how better data could address them. Third, it discusses the academic and policy impacts of upper tail measurement.



Citations (55)


... More recently, the overall redistributive impact weakened, following large fiscal consolidation programs in the wake of the great recession, though EU countries reformed their automatic stabilisers and their tax policies to varying degrees with different effects on inequality (De Agostini et al. 2014or Nolan 2018. Bozio et al. (2024) analysed the role of redistribution as opposed to predistribution over the long run in the US and France using tax data, quantifying the extent of the reduction from market to posttax inequality-and highlighting that differences in market inequality drive most of the differences in post-tax inequality between France and the United States over time. ...

Reference:

What explains recent trends in income inequality in the European Union?
Predistribution versus Redistribution: Evidence from France and the United States
  • Citing Article
  • April 2024

American Economic Journal Applied Economics

... The sustainability of contemporary society is in danger of collapsing under the weight of a dual and interrelated crisis. While the social crisis dimension manifests itself in levels of inequality last seen in the 19th century (Piketty et al. 2023), the most discussed aspects of the ecological crisis are the climate (IPCC 2022) and biodiversity (IPBES 2022) emergencies. 'Sufficiency' has deservedly become a key term within sustainability science. ...

Rethinking capital and wealth taxation
  • Citing Article
  • August 2023

Oxford Review of Economic Policy

... Yet, it is interesting to try to identify the type of socialism that he defends because it helps to better understand some of the criticisms he has received. Certainly, he rejects both the authoritarian state socialism with central planification of the communist era (Piketty 2021;2022a, 167) and today's post-communist Chinese model, which he considers "an authoritarian mixed economy" or "a perfect digital dictatorship" (Piketty 2020, 606-611;2022a, 230-237). What he offers instead is a "participative socialism" (Piketty 2020, chapter WALRAEVENS / IDEOLOGIES AND UTOPIA VOLUME 16, ISSUE 1, SUMMER 2023 aa 17), or a decentralized, self-managed, democratic, ecological, and multicultural socialism for the 21 st Century (Piketty 2022a, chapters 7 and 10). ...

A propos de Capital et idéologie
  • Citing Article
  • October 2022

Revue de philosophie économique

... C'est aussi le signe de l'existence des inégalités de revenu qui, malheureusement, persistent dans de nombreux pays, surtout ceux en développement, au cours des dernières décennies (Dout & Kebalo, 2021). En 2021, les 10% les plus riches de la planète détiennent plus de 52% du revenu mondial, tandis que la moitié la plus pauvre n'en gagne que 8% (Chancel et al., 2022). Les inégalités de revenu génèrent des coûts énormes au point que si son aggravation ne fait pas l'objet d'un suivi rigoureux et qu'on ne lui trouve pas des remèdes efficaces, elle pourrait et selon leur niveau de revenu. ...

Rapport sur les inégalités mondiales 2022
  • Citing Book
  • April 2022

... W nowszych publikacjach można z kolei zauważyć, że badania nad nierównościami i ich wpływem na wzrost i rozwój gospodarczy koncentrują się na analizach poświęconych konkretnym uwarunkowaniom nierówności (Ćwiek, Trzcińska, 2022), makroekonomicznym zagadnieniom dotyczącym nierówności i ich przyczyn (Hussain, Greve, 2023), czy uogólnieniom badań konkretnych grup dochodowych (Piketty, Saez, Zucman, 2022). Ponadto liczne w literaturze są badania dotyczące wybranych krajów, jak np. ...

Twenty Years and Counting: Thoughts about Measuring the Upper Tail

The Journal of Economic Inequality

... First is that political campaigns can expand their boundaries because of boundary-spanning actors and strategies. The political landscape is characterized by an increasingly socially fragmented and politically polarized audience (Gethin et al., 2021) who distrust political and media institutions (Bennett and Livingston, 2020) and are increasingly perceptive to deceptive tactics such as bots and trolls (Semetko and Tworzecki, 2017). Official campaigns operate within the normative expectations of political campaigning, but the "unofficial" elements are what make these campaigns competitive and responsive to this changing political landscape. ...

1. Political Cleavages and Social Inequalities in Fifty Democracies, 1948–2020
  • Citing Chapter
  • December 2021

... The first fact is about the dynamics of global income inequality. Income inequality between all individuals around the world has been decreasing in the past three decades (Alvaredo et al., 2018;Chancel & Piketty, 2021;Lakner & Milanovic, 2015;Milanovic, 2021Milanovic, , 2024. 2 The second fact regards the evolution of the wealth-toincome ratio, which is a measure of an economy's capital intensity. This ratio has been increasing in several developed and developing countries over the past decades (Novokmet et al., 2018;Piketty, 2014;Piketty et al., 2019;Piketty & Zucman, 2014). ...

Global Income Inequality, 1820-2020: The Persistence and Mutation of Extreme Inequality
  • Citing Article
  • October 2021

Journal of the European Economic Association

... While partially congruent to the religious cleavage, this divide appears to have a strong socioeconomic dimension. This class cleavage differs significantly from that observed in other Muslim-majority countries studied, such as Pakistan where the secular left has historically been supported by low-income voters and by the poorer Sindhi ethnic group (Gethin et al. 2020). ...

Social Inequality and the Dynamics of Political and Ethnolinguistic Divides in Pakistan, 1970–2018
  • Citing Chapter
  • November 2021

... Emphasizing the role of party agency and strategy, one perspective sees new parties' issue-based challenges to the dominant position of mainstream parties as evidence of dissolving links between voters and parties and of growing party system fragmentation (e.g., Franklin 1992;Green-Pedersen 2007De Vries and Hobolt 2020). On the other hand, researchers working in the cleavage tradition and comparative political economy scholars alike highlight the role of long-term structural changes of the economy and society at large that give rise to fundamentally new conflicts across advanced democracies (e.g., Inglehart 1984;Kitschelt 1994;Kriesi et al. 2008;Bornschier 2010;Beramendi et al. 2015;Häusermann and Kriesi 2015;Hooghe and Marks 2018;Hall 2020;Gethin, Martínez-Toledano, and Piketty 2021;Kitschelt and Rehm 2023;Häusermann and Kitschelt 2024). ...

Political Cleavages and Social Inequalities in Fifty Democracies, 1948–2020
  • Citing Chapter
  • November 2021

... Representatividad política, edades y comportamiento electoral en las elecciones subnacionales ecuatorianas (2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018)(2019)(2020)(2021)(2022)(2023) análisis político n.º 109, Bogotá, julio-diciembre de 2024, pp. 207-226 Madrid, 2005;Birnir, 2007;Guzmán y Rodríguez-López, 2018;Ford y Jennings, 2020;Gethin, Martínez-Toledano y Piketty, 2022;Márquez y Martínez-Hernández, 2022). En estos clivajes se inscribe uno de estudio más reciente: la edad (Toro, 2008;Contreras y Navia, 2013;Corvalán y Cox, 2013;Contreras y Morales, 2014;Mackenna, 2015;Bargsted, Somma y Muñoz, 2019;Ford y Jennings, 2020;Bunker, 2021;Gethin, Martínez-Toledano y Piketty, 2022). ...

Brahmin Left Versus Merchant Right: Changing Political Cleavages in 21 Western Democracies, 1948-2020

Quarterly Journal of Economics