Like in many other countries, wealth inequality has increased in Switzerland over the last fifty years. By providing new evidence on cantonal top wealth shares for each of the 26 cantons since 1969, we show that the overall trend masks striking differences across cantons, both in levels and...

We present a new data set we built based on Swiss rich lists going back to 1989. We show, among other things, that 60% of the super-rich are heirs-a fraction twice as large as in the US-and that wealth mobility at the very top has declined significantly. We find that top 0.01% wealth shares are...

We estimate the ratio of private wealth to national income, βpt, for Switzerland from 1900 to 2020. Our results indicate that over the 20th century, βpt did not follow a U-shaped pattern as in most European countries. Instead, its was exceptionally stable at around 500%. We argue that this...

We use a novel rich-list data set to estimate the sensitivity of the location choice of superrich foreigners to a special tax regime, under which wealthy foreigners are taxed on their living expenses, rather than their true income and wealth. We are the first to evaluate this controversial Swiss...

We collect, digitize, and supplement the Swiss rich list for the years 1989-2020 published in the "BILANZ" business magazine to gain new insights on the structure and dynamics of top wealth in Switzerland. Using this data allows us study the super-rich in Switzerland in ways that were not...

We develop a unifying framework for optimal income taxation in multi-activity economies with general production technologies. Agents are characterized by an N-dimensional skill vector that captures intrinsic abilities in N activities. The private return to each activity depends on individual...

We develop a framework for optimal taxation when agents can earn their income both in traditional activities, where private and social products coincide, and in rent-seeking activities, where private returns exceed social returns either because they involve the capture of pre-existing rents or...

This paper studies optimal dynamic tax policy under the threat of political reform. A policy will be reformed ex post if a large enough political coalition supports reform; thus, sustainable policies are those that will continue to attract enough political support in the future. We find that...

We show that the Diamond and Mirrlees (1971) linear tax model contains the Mirrlees (1971) nonlinear tax model as a special case. In this sense, the Mirrlees model is an application of Diamond-Mirrlees. We also derive the optimal tax formula in Mirrlees from the Diamond-Mirrlees formula. In the...

How are optimal taxes affected by the presence of superstar phenomena at the top of the earnings distribution? To answer this question, we extend the Mirrlees model to incorporate an assignment problem in the labor market that generates superstar effects. Perhaps surprisingly, rather than...