California's Billionaire Tax (Prop 40) & SEIU-UHW's Ballot Leverage
SEIU-UHW president Dave Regan's 48-initiative leverage machine, Emmanuel Saez & Gabriel Zucman's Section 5033(c)(3)(C) voting-control valuation trap, the California Supreme Court fast-lane challenge, and why wealth taxes survive in Norway and Switzerland but failed in France.
Eve's take
David: Who is behind California's Proposition 40 billionaire tax — and how does Section 5033(c)(3)(C) value private startup founders?
Proposition 40 on California's November 3, 2026 ballot imposes a one-time 5% tax on the worldwide net worth of anyone who was a California resident on January 1, 2026 with $1 billion or more — roughly 250 people holding $2 trillion in wealth, with 90% earmarked for Medi-Cal and 10% for food assistance and education. Sponsored by SEIU-UHW president Dave Regan (who has filed up to 48 ballot initiatives since 2012 as an attrition and bargaining weapon against dialysis chains and hospitals) and drafted by UC Berkeley economist Emmanuel Saez alongside Brian Galle, David Gamage, and Darien Shanske, it pits Bernie Sanders, Ro Khanna, and the California Democratic Party against Gavin Newsom, every major Democratic gubernatorial candidate, and a $300M+ opposition war chest led by Sergey Brin's $102 million.
The viral claim that Prop 40 taxes '10x voting shares at 10x' is a misreading of a real, deliberate mechanism: Section 5033(c)(3)(C). Publicly traded companies (including dual-class shares at Meta or Alphabet) are valued at December 31, 2026 market price. For privately held companies, however, ownership is presumed to be not less than your share of voting control, applied to GAAP book value plus 7.5 times average annual book profits — meaning a startup founder with 10% economic equity and 60% voting control is taxed as owning 60% of the company, while appraisers face personal penalties up to 4% of any discrepancy if the Franchise Tax Board disagrees.
David: What happens in the California Supreme Court if Prop 40 passes — and how does it compare to wealth taxes in Norway, Switzerland, Spain, and France?
Even if Prop 40 clears voters (polling at 46%–43%), it enters a self-built constitutional fast lane: facial challenges must be filed in Sacramento Superior Court within 60 days, decided by April 1, 2027, and ruled on by the California Supreme Court by November 1, 2027, with former US Solicitor General Elizabeth Prelogar already retained by the opposition to attack its retroactivity, Due Process, and dormant Commerce Clause apportionment defects — plus a potential conflict if Brin's Prop 42 passes with more votes.
For Regan, Prop 40 is classic leverage (he offered Newsom to drop it for a 2% legislative tax); for Saez, the precedent is the product. Across Norway (~1% above ~$150k), Switzerland (0.1%–1% by canton), Spain, and France (which repealed its ISF financial wealth tax in 2017 after losing an estimated €60B in capital flight to collect €5B), the international lesson is clear: wealth taxes survive when they are low, narrow, and predictable, and break when they try to do retrospective, state-valued redistribution at scale.
An AI's opinion, not a fact. Linked phrases open the episode at the moment Eve said it.
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Where it came up
Recording Session 2 · Oct 24, 2026 · 4 moments
California High-Speed Rail & the Billionaire Tax
Prop 40's 5% structure, coalitions & $300M+ opposition
David: Tell me about California's billionaire tax — who is behind it, who is for it, who is against it, and what's the language?
Eve: Proposition 40 is a one-time 5% tax on anyone who was a California resident on January 1, 2026 with $1B+ net worth — about 250 people and $2T in wealth. Sponsored by SEIU-UHW and drafted by Berkeley's Emmanuel Saez and tax professors, it's opposed by Gavin Newsom and over $300M in opposition spending led by Sergey Brin's $102M.
Section 5033(c)(3)(C) & the private startup valuation trap
David: Tell me the financial details on how Prop 40 counts voting shares and values private companies.
Eve: Section 5033(c)(3)(C) presumes your ownership percentage in a privately held company is not less than your share of voting rights, valued at GAAP book value plus 7.5 times profits, with appraisers facing up to a 4% penalty if the Franchise Tax Board disagrees. Publicly traded shares are excluded and valued at market price.
The California Supreme Court fast-lane & Elizabeth Prelogar
David: Tell me about the California Supreme Court challenge to Prop 40.
Eve: Prop 40 requires facial constitutional challenges to be filed in Sacramento Superior Court within 60 days, with a ruling by April 1, 2027 and a California Supreme Court decision by November 1, 2027. The opposition has already retained former US Solicitor General Elizabeth Prelogar to challenge it on Due Process, Commerce Clause apportionment, and retroactivity.
Norway, Switzerland, Spain & France vs. Prop 40
David: Does anyone do wealth taxes well?
Eve: Norway (~1%) and Switzerland (0.1%–1% by canton) run stable recurring wealth taxes, while France repealed its ISF financial wealth tax in 2017 after collecting €5B a year at an estimated €60B cost in capital flight. Wealth taxes survive when they're low, narrow, and predictable — and die when they try to be redistributive at scale like Prop 40.