Arun is an Associate Professor in the Economics Department at the University of Warwick. He is also a Research Fellow at the Institute for Fiscal Studies, a Visiting Fellow at the International Inequalities Institute, Research Associate of the CAGE Research Centre, CESifo Research Affiliate, and Inequalities theme leader at the Warwick Behaviour Spotlight. From 2020-22 (creation to abolition) he was a member of the Department for Education Skills and Productivity Board.
Arun studies issues of inequality, tax compliance, and tax design, with a focus on those with high incomes or wealth. He is a Commissioner at the Wealth Tax Commission. He also works on issues of environmental taxation, economic development, migration, and tax in low- and middle-income countries.
Arun is co-chair of the Discover Economics campaign, aiming to increase the diversity of people who study and work in economics. He is also on the Editorial Board of the Economics Observatory.
Top Flight: How responsive are top earners to tax rates?
Using administrative data on the universe of UK taxpayers we study the responsiveness of top earners to tax rates. We leverage two large tax reforms affecting top earners – one in the UK and one in France – to determine the scale of both emigration and immigration responses. Our setting allows us to examine heterogeneity in response by income level and by ex ante probability of migration, for both natives and migrants. We develop a model that rationalises these results, and structurally estimate model parameters to infer the long run stock and migration elasticities.
(coauthored with Cesar Poux, LSE III and Andy Summers, LSE Law)
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