Tax @PwC @PwC_UK | International Research Fellow @OxfordTax | Former @OECDtax | Mum | Views are my own. RT does not mean endorsement.

London
Joined June 2020
Replying to @mattyglesias
I don't agree with this kind of nihilistic take. Truth is a process. Everything is contested by someone. In the US Vs Europe, some truth has emerged. Everyone agreed the US is growing faster and so is US productivity. Everyone agreed tech prices are dropping and that complicates things. You can see how many large companies Europe has and how many the US, how much we innovate. And yes, there are some crucial disagreements, but we can understand what they hinge on after the conversation.
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We stopped everything to write an answer (link below) to Paul Krugman's two posts of today (one informal, one with a simple model) arguing that Europe is broadly not falling behind the United States. The change measured by the Draghi report, he argues, is mostly due to growth in the technology industry, which has distorted GDP numbers without actually leading to higher standards of living. We should believe our eyes when we walk around France and walk around Mississippi. Krugman is wrong. The measures he uses understate European stagnation. This matters enormously. Divergence with the United States is the strongest evidence for reform in Europe. 1. The growth numbers Krugman compares the United States, France, and Germany at purchasing power parity in current prices. On that measure, France's and Germany's position relative to America has been roughly constant since 2000. But current price comparisons miss productivity gains in sectors where prices fall. If America produces twice as much software while the price of each unit halves, the value of American software output looks unchanged even though the volume has doubled. Most economists therefore use constant prices, which fix the base-year PPP level and apply each country's real output growth on top of it. American output growth has concentrated in tech, where prices have fallen tremendously as productivity rises. In terms of the volume of things produced, America has pulled away from Europe. 2. Is it all the tech industry? Krugman concedes this tech divergence but says it is not welfare-relevant. The American growth lead is an accounting artefact of measuring more iPhones at base-year prices, not a sign that Americans are actually richer, because Europeans buy the same iPhones at the same world prices. This is not the right way to think about the world today, as an earlier Paul Krugman would have argued. His model assumes tradable goods, interchangeable workers, marginal-cost pricing, and no profits. Each assumption fails. Most of what households buy is non-tradable: housing, healthcare, childcare, education. When American tech firms bid workers from haircutting to coding, American haircut wages rise. Germany has no growing tech sector to do the bidding, so German wages stay flat. Technology is not priced at marginal cost. Apple's margins are around 40 percent. Anthropic's inference margins are at 70 percent. The major platforms enjoy network effects, switching costs, and lock-in that hold prices well above what a competitive market would deliver. A large share of the productivity gains in technology stays as profit. A lot of the value of American technology dominance shows up in equity, not in wages. Apple, Microsoft, Nvidia, Alphabet, Meta, and Amazon together are worth $21 trillion, more than the entire combined stock market value of all European stock markets. Around 60 percent of US equity is held by American households. The median French or Spanish household holds almost no equity. The median employee at Meta, a company with almost 80,000 employees, earned $388,000 in 2025. This advantage is not going to go away. Krugman's own 1991 paper, cited in his Nobel prize, showed that comparative advantage in modern industries is produced by increasing returns to scale, specialized labor markets, supplier networks and the agglomeration of suppliers, workers, and ideas in particular places. Once an industry concentrates somewhere, the concentration is self-reinforcing. Europe is being pushed away from the next round of technology industries (AI!). 3. What about inequality? Another retort is that GDP per capita hides substantial inequality, and so even if America is rich on average, this is mostly due to the super wealthy. But despite the US's high pre-tax income inequality, it also achieves higher median incomes than Europe, in part because of such a high base, and in part because it actually redistributes more than many European countries. The cleanest comparison is median equivalised disposable household income: income after cash taxes and transfers, adjusted for household size and purchasing power. According to the OECD's 2021 numbers, the median American earns 30 percent more than the median Dutchman, about 31 percent more than the median German, and about 52 percent more than the median Frenchman. 4. What about hours worked? Krugman points out that while American GDP per person is higher, most of this is because Americans work more. For this divergence to be an hours worked story, Americans must work more relative to Europeans now than they did in 2000. The opposite has happened. Birinci, Karabarbounis, and See in a 2026 NBER paper show that about half of the American-European hours gap that existed in the 1990s has reversed by the end of the 2010s. Americans work fewer hours per person than they did in 2000, while most Europeans work more. 5. Is America not a bad place to live? Walk around Alabama and France: surely the former cannot be substantially richer than the latter? American cities often have poorer centres and richer suburbs or exurbs. European cities preserve richer and more attractive historic cores. A visit to a city as a tourist in America compared with a city in France will leave one having seen different spots on the income distribution. Americans in Europe go to the nicest and richest European cities. Rather than a walking around test, do a driving around test. Go to the periphery of any modern American city and see a level of new-built material wealth that is extremely uncommon in Europe, with thousands of enormous four- or five-bedroom homes. In the South, in places like Nashville and Austin, drive around the downtowns to see hundreds of luxury apartment buildings springing from the ground. This construction boom is replicated virtually nowhere in Europe today. The other question is generational. Housing often costs more in Europe than in the United States, despite the quality of the housing stock generally being much better. Europe has nice city cores but these are inaccessible to young Europeans. Consider the salaries available to entry-level workers. The starting pay for a London police officer is $57,000. In Washington, DC, $75,000. The entry-level Deloitte consultant job in Madrid pays around €28,000, roughly $33,000 per year. In Charlotte, the entry-level Deloitte job pays $63,000. There are many things to dislike about life in America. But relative to 25 years ago, the gap in material wealth has shifted dramatically in America's favor. siliconcontinent.com/p/europ…
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Giorgia Maffini retweeted
This isn’t right, conceptually and empirically/politically. Economics’ caution is about interpersonal comparisons of utility, but once you state a social objective (even mildly inequality-averse), redistribution is straightforwardly justified. And liberal democracies do redistribute, including toward children; when they don’t do enough, it’s typically a political choice, not “economists preventing it.”
In economics, we cannot say that the marginal utility of providing milk to kids is more than that of a rich person enjoying an extra bid of caviar. Isn't this sociopathic? This lack of morality is designed to prevent redistribution. Sam Bowles, @UMassEcon
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Giorgia Maffini retweeted
Vacancy: Course Administrator for the MSc in Taxation @Oxford_MScTax Do you have brilliant organisational skills? Can you produce accurate work to deadlines? Have you got a proven track record of experience in an administrative role? 👀⬇ Job Details (corehr.com)
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🚨 The final application deadline for September 2022 entry onto the @Oxford_MScTax is next Tuesday (1 March 2022) Full details can be found here: ox.ac.uk/admissions/graduate… Apply today #MScTax #taxation #tax #studytax
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Giorgia Maffini retweeted
Last spaces available for tomorrow’s webinar on Environment Tax with the superstars in environmental tax policy and economics. Will Tax and the Environment be the next fiscal challenge? Registrations: lnkd.in/eE6WGGxb Helen Miller Kurt Van Dend…lnkd.in/eMVWDyK7
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Giorgia Maffini retweeted
No cliche's, no BS, just insightful commentary & analysis from @MaffiniG and @rescobarstack on the global tax reform plan of @OECDtax and @G20Governments Watch and learn! @IBFD_on_Tax
Perspectives from the United States and Europe on the historic agreement for a two-pillar solution to tackle the tax challenges arising from digitalization. Bob Stack and Dr Giorgia Maffini share their views with @JusticeTwo (IBFD) youtu.be/rASrBd9XDvo link.ibfd.org/3rbTQ22
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139 members of the Inclusive Framework on #BEPS are negotiating a solution on the #tax challenges arising from digitalisation. Statement coming soon. ⤵️
The #BEPS Inclusive Framework meeting is underway to discuss the #tax challenges arising from the digitalisation of the economy. Stay tuned for the outcomes at the end of the meeting.
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Giorgia Maffini retweeted
Delighted to confirm that our policy paper (with @MaffiniG), is out today in the British Tax Review. So, for those who thought globalisation and digitalisation created big problems for CIT, read on. There is a storm brewing in PIT. Our problems are just starting👇
🚨 As promised - *new paper*: @MaffiniG and I are delighted to announce our new policy paper on "The Impact of Digitalisation on Personal Income Taxes" In the last years we have been concentrating on the impact of digitalisation on CIT, and to lesser extent, VAT 🧵
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Great opportunity
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Giorgia Maffini retweeted
@MaffiniG, @iremguceri and I are working on a new project on this. It follows on from our policy paper, which will be out in a couple of weeks. Details here 👇 xitter.cf/delaFeriaR/status/1387…
🚨 As promised - *new paper*: @MaffiniG and I are delighted to announce our new policy paper on "The Impact of Digitalisation on Personal Income Taxes" In the last years we have been concentrating on the impact of digitalisation on CIT, and to lesser extent, VAT 🧵
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Teaser : loooooong awaited Communication of the Commission on business taxation to be released tomorrow. Big news coming up ! #FairTaxation #Taxes @EU_Taxud
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According to our latest #data measuring the price of CO2-emissions from energy use in 44 OECD and G20 countries, around 6⃣0⃣% of #carbon emissions face no price at all. Take a deep dive into🆕 #OECD data on taxes and tradeable permits for carbon emissions ⤵️
#Carbonpricing through #taxes is one of the most effective tools for reducing CO2-emissions from #energy use. 📗🔍 See our 🆕 Effective Carbon Rates report for the latest stats & trends ➡️ oe.cd/ECR2021 #ClimateAction #ECR
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Giorgia Maffini retweeted
🚨 As promised - *new paper*: @MaffiniG and I are delighted to announce our new policy paper on "The Impact of Digitalisation on Personal Income Taxes" In the last years we have been concentrating on the impact of digitalisation on CIT, and to lesser extent, VAT 🧵
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This is private to disclosure, but tonight I’m crying myself to sleep. #SarahEverard was my age. She walked a junction I’ve walked many times. I cry for her stolen life; for the outpouring of stories from woman. And I cry for the horrific events of tonight. I am so disillusioned.
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Following the Budget announcement, Michael Devereux sets out what will be the likely impact on corporate investment, and İrem Güçeri examines how beneficial the new loss carry-back provisions will be. Read their blogs at oxfordtax.sbs.ox.ac.uk/blogs #Tax #CorporateTax #Budget2021
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