Activity: Wealth tax quiz

Activity: Wealth share quiz

Lecture handout: Inequality*

Key readings:

  • Saez, E., and Zucman, G., 2020, “The Rise of Income and Wealth Inequality in America: Evidence from Distributional Macroeconomic Accounts” Journal of Economic Perspectives, 34(4):3-26
  • Kopczuk, W., and Zwick, E., 2020, “Business Incomes at the Top” Journal of Economics Perspectives, 34(4):27-51,

Many consider inequality to be a key social problem, and yet economics is all about delving beyond intuitions. Do we have good data on what has happened to inequality over time? What type of inequality matters? Is there an important trade-off to consider when confronting inequality? The answers to these questions may be controversial, but they are relevant and important.

Imagine trying to answer the following question:

A study by Gimpelson and Treisman (“Misperceiving inequality“, NBER Working Paper 21174) found that:

  • In 29 of the 40 countries a majority of respondents who ventured a guess guessed wrong.
  • In 29 countries, the leading choice attracted fewer than 50 percent of those who guessed.
  • In almost three quarters of countries, most respondents who thought they could identify the general pattern of inequality got it wrong.

As Sam Bowman has argued,

loads of the objections people have to inequality, if there is any truth to them, are probably actually objections to perceptions of inequality, which may be more driven by media coverage than reality. If that’s true, then trying to reduce inequality in fact is a waste of time — you should try to get the media to talk about it less instead

I’ve often seen students link to this graph:

On initial inspection this graph looks highly dubious:

  • The selection of countries is suspicious (why exclude countries that have more income inequality than the US, and why include Finland but not Singapore?)
  • The “Index of health and social problems” looks arbitrary and prone to manipulation

However I’ve not been able to find the actual source yet. I assume it comes from ‘The Spirit Level‘, which I believe has been quite firmly debunked.

Oxfam are also reknowned for using dodgy statistics. For example:

Aside: Sometimes I’m asked what I really think about inequality. Really? That the there is no ethical basis for being concerned about inequality per se.  In fact, the best argument to take it seriously is because low educated and xenophobic natives, who have hit the jackpot in where to be born, hold civilised (i.e. cosmopolitan) society to ransom by threatening extremism of various sorts and civil disorder unless their concerns are met. Ideally, we prevent all that from happening by ensuring nominal income stability and productivity growth. But there’s no moral basis for “equalising” arbitrary distributions. Our moral concerns should be focused on eradicating poverty and destitution; and ensuring a competitive market economy that rewards wealth creation and limits rent seeking. If forcing Charles Koch to emigrate improves your metrics of success, then I demur.

For more on Mr Beast see this twitter thread and this interview with Joe Rogan:

The lecture tried to show the link between economic growth and rising living standards for the general public.

This is also something that Dracula noticed when he encountered a “normal” modern house:

I’ve been a nobleman for 400 years. I’ve lived in castles and palaces among the richest people of any age. Never….never! Have I stood in greater luxury than surrounds me now. This is a chamber of marvels. There isn’t a king, or queen or emperor that I have ever known or eaten who would step into this room and ever agree to leave it again. I knew the future would bring wonders. I did not know it would make them ordinary.

A key point from the lecture is that when assessing inequality it is important to look at consumption (or living standards) as well as income and wealth. In this post Scott Sumner makes the case for why the only sensible way to look at inequality is through consumption.

A universal basic income is a policy programme that provides all citizens with a specified amount of money irrespective of need. This Vox article provides a good summary of different examples of how they work in practice.

In January 2022 a group of high net worth individuals signed a petition to campaign for a wealth tax. Here is an overview and discussion of a wealth tax:

Here is a debrief about the wealth tax quiz. Recently, Norway increased their wealth tax to 1.1%. According to a report in The Guardian, “More than 30 Norwegian billionaires and multimillionaires left Norway in 2022… This was more than the total number of super-rich people who left the country during the previous 13 years, it added. Even more super-rich individuals are expected to leave this year because of the increase in wealth tax in November, costing the government tens of millions in lost tax receipts… Many have moved to Switzerland, where taxes are much lower”

Here is a KPMG report on how Switzerland treats Cryptocurrencies as part of its wealth tax.

Here is the reason I’m concerned about the link between inequality as a public policy issue and central bank digital transformation:

I largely share Martin Wolf’s (2023, p. 283) criticisms of a universal basic income (UBI) in that by being so intentionally ill targeted it creates too much of a waste of limited public funding – “A UBI at a high enough level to render targeted assistance to those who are vulnerable, needy, and deserving would be unaffordable, while a UBI  that is affordable would benefit many people who do not need the money and fail to benefit important services and people who need more than they have now.” I prefer a moderate income tax with generous allowances and incentive compatible welfare payments.

We can think of the state as an “insurer of last resort”, with its access to taxation permitting favourable terms for mitigating risk (p. 274). By being able to compel people it also avoids the “adverse selection” problem that befells individuals in particular need. This helps to explain the main economic justification for a well functioning welfare state (p. 276):

  • Incomplete private insurance
  • Incomplete capital markets

Note thought that improving the market in those two areas would reduce the need for widespread social protection.

For an overview of the debate surrounding the role of slavery in the rise of the West see:

📻  Recommended audio:
  • Claudia Goldin on Inequality“, Conversations with Tyler, Oct 6th 2021 – this conversation focuses on gender inequality and the labour market in particular, and although some of the discussion is aimed at graduate students they pose some excellent questions to reflect on.
  • Thomas Piketty on the politics of equality“, Conversations with Tyler, April 20th 2022 – Tyler challenges Piketty on some of the political economy arguments relating to progressivism and does a good job putting Piketty’s work into a history of economic thought perspective.
🎥 Recommended film:

You can see the trailer to Parasite here:


I also recommend the 2021 BBC series Chloe. As this Guardian review demonstrates, some viewers can actively root for despicable behavioural if it’s presented as a commentary on inequality.

Finally, if you like the plot device from Parasite, with people appearing from underground captivity, confronting a confusing situation as a result of odd costumes, leading to violence and mayhem… then I recommend Emir Kusturica’s Underground (1995):

Learning Objectives: Survey the latest empirical work on inequality and relate this to wider social issues.

Cutting edge theory: Assessment of a wealth tax

Focus on diversity: Thomas Sowell has written extensively on topics such as race and inequality. In this interview he discusses the myths of economic inequality.