From Sfchronicle · · 1m 10s
Billionaire Tax Could Cost California $39 Billion
Stanford economists warn Prop 40 billionaire tax might cost California $39 billion long-term.
In brief
Stanford economists warn Prop 40 billionaire tax might cost California $39 billion long-term. Stanford economists say California could lose $39 billion from a proposed billionaire tax due to wealthy residents leaving. Originally reported by Sfchronicle.
Prop 40 on ballot
Californians vote on a proposed billionaire wealth tax as Proposition 40.
Stanford economists report
Stanford University’s Hoover Institution economists say the tax would collect only $36 billion, not the $100 billion projected.
Wealth tax revenue drop
The tax would lose $30 billion to $40 billion in income tax revenue from wealthy residents leaving California.
Prop 40 details
Prop 40 would levy a one-time 5% wealth tax on people with at least $1 billion net worth living in California on Jan. 1, 2.026.
Billionaires leaving
Some billionaires have already left California before the Jan. 1, 2026 deadline.
Billionaire PAC funding
A billionaire-backed PAC has spent over $300 million to defeat Prop 40.
Zuckerberg stays

Meta CEO Mark Zuckerberg agreed to stay in California after a stock deal.
Long-term loss estimate
Stanford economists estimate a net loss of $39 billion if Prop 40 passes.
The main idea
Stanford economists say California could lose $39 billion from a proposed billionaire tax due to wealthy residents leaving.




