President and CEO @taxfoundation. Work hard. Work smart. Work together.
Baltimore, MD
Joined May 2008
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Taxes for my enemies, subsidies for my friends. Enemies and friends get decided by the political winds.
Daniel Bunn retweeted
Nice summary of research on wealth taxes in practice from @adamnmichel: adamnmichel.substack.com/p/e…
Daniel Bunn retweeted
This is a must read from the @TaxFoundation. High taxes have consequences. taxfoundation.org/data/all/s…
Daniel Bunn retweeted
The fresh calls for a windfall tax on banks in response to HSBC’s higher profits are both predictable and misguided. Six quick points... 🧵
1⃣ UK banks are already more heavily taxed than other businesses, thanks to the 3% surcharge on corporation tax and the additional levy on their balance sheets...
Daniel Bunn retweeted
In a recent NYT debate, Paul Kedrosky claimed that 80% of Anthropic revenues come from 8 companies. He claimed Meta alone makes up 10%.
As Azeem Azhar pointed out, this concentration was declining over time and we'd have an answer in the S-1.
The S-1 tells us:
"No single customer represented more than 10% of our revenue for the nine months ended September 30, 2026. Approximately 79% of our revenue came from customers outside of our top five customers for the three months ended September 30, 2026, up from approximately 64% for the three months ended March 31, 2026."
So that resolves it. Concentration is below the levels Kedrosky warned of, and falling.
nytimes.com/2026/10/16/opini…
sec.gov/Archives/edgar/data/…
Daniel Bunn retweeted
»The UK’s tax problems are “not really about revenue; it’s about structure,” said Alex Mengden, economist at the Tax Foundation, noting that the overall best performers were those with broader bases and lower distortions.«
Why is it getting harder to raise taxes in the UK? ft.trib.al/3ksWMQ2
Daniel Bunn retweeted
As a former contributing writer to the AP Stylebook, I'll make a ruling here: it should be "Dans Sullivan" like Surgeons General. Like Attorneys General, or courts martial. xitter.cf/migold/status/21147937…
Daniel Bunn retweeted
The US ranks 17th in the @TaxFoundation's 2026 International Tax Competitiveness Index taxfoundation.org/internatio…
I think it's time we all recognize that we've been living in the era of Peak Daniel since about 40 years ago.
Hilarious data investigation by @andrewvandam into why Alaska has so many Dan Sullivans washingtonsun.com/national/d…
Daniel Bunn retweeted
Wyden just updated his data center tax bill.
There's more definition around things @GS_Watson, @DiSalvoPhD, and I had questions on (e.g., who's a "small" data center operator).
And still MANY unanswered Qs: tax rate, how bright the lines are between AI and non-AI usage, etc.
My first post @TaxFoundation, with @GS_Watson & @DiSalvoPhD: Sens. Warner and Wyden proposed new, targeted tax increases on data centers.
While aimed at voter concerns, each proposal would make the tax code more complex and less neutral, and could drive AI investment overseas.
Daniel Bunn retweeted
"Yet the finding that [the China Shock] caused one in four manufacturing jobs lost from 1990 to 2007 has not aged well. Neither has the populist turn against free trade that began around the time of the original research" 🔥 economist.com/finance-and-ec…
Daniel Bunn retweeted
Have your own economic forecast and budget policy forecast and want to simulate it using a CBO-consistent model that goes from 1901 to 2056 and handles all the interactions in policy and economics in a CBO-style manner? Check out the fiscal explorer. econvitals.org/tools/fiscal-…
The context for this piece is US policy, but the same lessons apply in the UK. The corporate income tax exists and windfall profits are part of that tax base even without a special separate levy called a "windfall profits tax" (which the UK already has).
taxfoundation.org/blog/big-o…
Nope, that’s not how taxes and price works. The price is determined by demand and supply.
Companies charge the highest price they can given demand. A tax levied on *profits* does not affect a company’s cost ie supply.
Taxes on *windfall* profits (like oil and gas) are the most efficient kind of tax there is.
Readers added context they thought people might want to know
Corporate profit taxes do not directly shift marginal costs but empirical studies show partial pass-through into higher consumer prices. Windfall taxes on oil and gas have deterred investment and production in practice despite theoretical efficiency on rents.
dadun.unav.edu/server/api/cor…
ecb.europa.eu/pub/pdf/scpwps…
taxfoundation.org/blog/big-oil-p…
scottishfinancialreview.com/2025/09/03/win…
Daniel Bunn retweeted
An F15 Strike Eagle from Seymour Johnson AFB in Goldsboro flies through colorful Linville Gorge near the highest elevations in the Blue Ridge. These jets on practice runs fly just over our rooftops in Blowing Rock, shortly before descending into the gorge. Photo by Max Renfro!
Daniel Bunn retweeted
OECD加盟国の税制競争力ランキング。日本は38カ国中28位（消費税は5位、法人税は36位）。
強み：消費税の低い税率と広い課税ベース
弱み：法人税の高い税率と遅い減価償却と厳しい欠損金控除制限と中途半端な国外所得免税
🎉 The 2026 rankings are in! How competitive is your country’s tax code?
See how your country compares with our new interactive tool: hubs.ly/Q04BspXV0
The structure of a country’s tax code is a determining factor of its economic performance. A well-structured tax code is easy for taxpayers to comply with and can promote economic development while raising sufficient revenue for a government’s priorities. In contrast, poorly structured tax systems can be costly, distort economic decision-making, and harm domestic economies.
The International Tax Competitiveness Index gives a comprehensive overview of how OECD countries’ tax codes compare, explains why certain tax codes stand out as good or bad models for reform, and provides important insight into how to think about tax policy.
Daniel Bunn retweeted
Since several have asked, raising the SocSec payroll tax rate to 17% from 12.4% would fill the 75-year shortfall and prevent insolvency.
It would also be the kind of middle-income tax increase that neither party favors.
ssa.gov/OACT/solvency/provis…
