Not even Nobel Prize winners can save the ‘billionaire tax’

Read the original at New York Post ↗
New York Post · collected 2026-10-09 · by Adam Michel

Quick Summary

A group of six Nobel Prize-winning economists recently signed a letter supporting Proposition 40 in California, which proposes a one-time 5% tax on billionaires' wealth. The article argues that this initiative is misguided, citing historical failures of similar taxes and questioning the accuracy of claims about its potential revenue generation. It also disputes the effectiveness of the tax in retaining wealthy individuals within the state, highlighting instances where prominent figures have already moved out to avoid taxation.
Written locally by qwen2.5:14b on 2026-10-09, using this article's own text rather than the other coverage of the same event (that is the story summary below).

AI analysis runs on qwen2.5:14b, locally

Story summary

Six Nobel Prize-winning economists recently signed a letter urging Californians to pass Proposition 40, which proposes a one-time 5% tax on the state's billionaires' net worth, calling it "the first-ever tax on billionaire wealth enacted anywhere in the world." However, this claim is inaccurate as twelve European countries have imposed annual net wealth taxes since the 1990s, though most of these were repealed due to low revenue generation and high administration costs. The letter also incorrectly states that California billionaires paid income tax equal to just 1.6% of their wealth gains, which opponents argue is misleading. Critics suggest that the need for multiple Nobel laureates to support such a measure indicates its controversial nature and potential flaws.

Written for “Billionaire Tax Debate” on 2026-10-09, grounded in this article and the 0 other(s) covering the same event.
Why this leaning score
The model judged this article politically coded and scored it -0.65, but every quote it verified points right, so the score is not published.
Written under an earlier scoring contract, which gave a paragraph rather than checkable quotes. Re-analysing this article replaces it.
Leaning score withheld for article 67439: score contradicts its own evidence · logged 2026-10-09

Signals How these are calculated →

Claims extracted
36
claim-shaped sentences
Uncertain
17%
6 of 36 hedged
Leaning
withheld
no quote in the article backed the model's score
Correction & hedging signals
67.4
corrections and hedging in what we collected; not a measure of accuracy
Outlets on this story
1
Politics
Narrative spread
1
articles carrying this framing
Analyzed 2026-10-09 · how these are computed

Story

📰 Billionaire Tax Debate
Politics · 1 article(s) covering the same event.

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Compared with similar articles

Nothing to compare against. No article is close enough to this one for the pipeline to have linked or judged the pair.

Publisher

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Who wrote this

Adam Michel
1 article(s) here · 1 carrying a prediction
🔮 If the idea really were that good, you wouldn’t need more than one Nobel laureate to make the case.
The only article under this byline in the corpus.

Topics

California Californians European Prop. 40 Proposition 40

Subjects

California GPE · 7× European NORP · 2× Medi-Cal ORG · 2× Sergey Brin PERSON · 2× Americans NORP · 1× Biden PERSON · 1× Californians NORP · 1× Legislative Analyst’s Office ORG · 1× US Treasury ORG · 1× the Golden State GPE · 1×

Narrative

That’s why when a Biden-era US Treasury study estimated tax payments by wealth, the results showed the wealthiest Americans paid total tax rates of almost 60% of annual income, the highest of any group.
framing: assertive · carried by 1 article(s) · first seen 2026-10-09
🔮 If the idea really were that good, you wouldn’t need more than one Nobel laureate to make the case.
2026-10-09 · New York Post
Not even Nobel Prize winners can save the ‘billionaire tax’ · assertive framing

Claims (36 extracted, 6 hedged)

You can usually tell a controversial idea like the “billionaire tax” is bad when proponents start trotting out teams of Nobel Prize winners to defend it. asserted
proponents → tell → it
If the idea really were that good, you wouldn’t need more than one Nobel laureate to make the case. asserted
you → need → case
The “tell” is when they quote half a dozen, as if there were a Nobel Prize for groupthink. asserted
they → quote → groupthink
Six Nobel Prize-winning economists recently signed a letter urging Californians to pass Proposition 40, the one-time 5% tax on the wealth of the state’s billionaires. asserted
economists → win → billionaires
The letter is wrong about everything, from the history of wealth taxes to the proceeds California can expect the tax to provide. asserted
tax → expect → proceeds
The letter calls Prop. 40 “the first-ever tax on billionaire wealth enacted anywhere in the world.” asserted
letter → call → world
Governments have taxed billionaires’ net wealth for decades. asserted
Governments → tax → decades
Twelve European countries imposed annual net wealth taxes in the 1990s. asserted
countries → impose → 1990s
They raised very little revenue, cost a lot to administer, pushed investment out of their countries, and were politically unpopular. asserted
They → raise → countries
All but three of the European wealth taxes have been repealed. asserted
All → repeal → taxes
The letter claims that California billionaires paid income tax equal to just 1.6% of their wealth gains. uncertain
billionaires → claim → gains
It is income taxes paid divided by an increase in estimated asset values, much of it unrealized. asserted
much → pay → it
We don’t tax gains on paper. asserted
We → tax → paper
If we did, homeowners would have to pay a tax every year that their home went up in value, even if they were still living in it. asserted
they → do → it
The wealthy actually pay heavy taxes. asserted
wealthy → pay → taxes
That’s why when a Biden-era US Treasury study estimated tax payments by wealth, the results showed the wealthiest Americans paid total tax rates of almost 60% of annual income, the highest of any group. asserted
Americans → ’ → group
California’s nonpartisan Legislative Analyst’s Office does not endorse that number, estimating that the tax could raise “tens of billions,” while also reducing state income-tax revenues on an ongoing basis as wealthy taxpayers move away. uncertain
taxpayers → endorse → basis
The Nobel laureates assert that “it is unlikely any significant number of billionaires successfully cut ties with the Golden State” before the Jan. 1, 2026, effective date of the tax. asserted
number → assert → tax
But Sergey Brin, Larry Page, Peter Thiel, Don Hankey, Travis Kalanick, Steven Spielberg, and David Sacks all reportedly left before the cutoff. uncertain
Brin → leave → cutoff
Stanford University economists Joshua Rauh and Benjamin Jaros found that nearly 30% of the expected taxable wealth left California before the measure even qualified for the ballot. asserted
measure → find → ballot
California may dispute some of these moves, but taxpayers will also dispute the tax’s legality. uncertain
taxpayers → dispute → legality
The Nobel laureates’ letter says Prop. 40 would help offset “massive funding cuts” to California’s Medicaid (Medi-Cal) program. asserted
. → say → program
But the so-called “cuts” actually save the state money by adding work or volunteer requirements to receive government health benefits. asserted
cuts → call → benefits
In real terms, federal subsidies to California are projected to decline slightly from their pre-pandemic high over the next decade. asserted
subsidies → project → decade
But even after the “cuts,” a Hoover Institution analysis concluded that “federal spending on Medi-Cal will be 50% higher in 2034 than in 2019.” asserted
spending → conclude → 2019
And rising billionaire wealth does not demonstrate these taxpayers have “extraordinary” political power, as the letter’s authors claim. uncertain
authors → rise → power
Billionaires do own media properties and fund political campaigns, but spending on either side of the political aisle often cancels itself out. asserted
spending → own → itself
The authors point out that Sergey Brin has spent $100 million against Prop. 40. asserted
Brin → point → .
Yet Tom Steyer spent more than $220 million of his own money running for governor on a platform that included the wealth tax. asserted
that → spend → tax
More fundamentally, rising billionaire wealth is not evidence that anyone else has been made poorer. asserted
anyone → rise → ?
Wealth at the top is overwhelmingly ownership of productive businesses, not piles of money stolen from the rest of the economy. asserted
Wealth → steal → economy
Roughly three-quarters of the assets of the richest 0.1% are ownership stakes in businesses that employ workers, produce goods and services, and finance new investment. asserted
that → employ → investment
Strip away the Nobel credentials, and the letter’s case rests on a series of claims that don’t hold up. uncertain
that → strip → claims
Prestigious signatures don’t change the arithmetic. asserted
signatures → change → arithmetic
Californians deciding on Prop. 40 should weigh the evidence. asserted
Californians → decide → evidence
And on the evidence, the likeliest result is not a windfall for health care spending, but a smaller tax base and a higher tax bill that falls on everyone who stays. asserted
who → fall → everyone
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