How the California Wealth Tax Would Work — and Why Every Billionaire in Los Angeles Is Watching

When you first hear it, the pitch seems almost soft. a five percent one-time tax. over a period of five years. targeted exclusively at individuals with a net worth of over $1 billion. It’s difficult to imagine many regular Californians crying in a state where the price of a two-bedroom in Santa Monica can rival the GDP of a small nation. Nevertheless, the topic of “what does this actually mean for me” keeps coming up at dinners in Palo Alto and Bel Air.

Formally known as the One-Time Wealth Tax for State-Funded Health Care Programs Initiative, the proposal will go on the November 2026 ballot after SEIU-UHW collected almost twice as many signatures as needed. On paper, the math is simple. Apply 1% annually for five years to the global net worth of a California billionaire as of December 31, 2026, excluding personally held real estate. The total revenue, according to backers, is about $100 billion. Some Berkeley economists who don’t typically support billionaires are among the critics who claim that figure is wishful thinking.

It’s not just the rate that makes the tax unique. It’s the layout. Instead of capturing wealth as it is earned, the initiative aims to capture wealth as it exists. That may sound technical, but keep in mind how Silicon Valley wealth is created: founders own massive, concentrated stakes in businesses they won’t sell. Mark Zuckerberg is not paid like a billionaire. Sergey Brin doesn’t either. They are hardly ever affected by the state’s income tax, which is precisely the gap the drafters are attempting to fill.

The Tax Foundation has expressed concern that, in some circumstances, the effective rate may rise significantly above 5%, particularly in relation to dual-class share structures and privately held businesses whose valuations are uncertain. Although the drafters believe that these concerns are exaggerated—Galle and Gamage have released rebuttals—the concern still exists in boardrooms. The total cost of compliance, including appraisers and penalties, might be greater than the actual tax.

And there’s the silent movement that has already started. Prior to the January 1 deadline, at least six known billionaires relocated. Real estate agents in Lake Tahoe report a noticeable increase in the number of buyers entering Nevada, attracted more by the lack of a state income tax than by the lake itself. It was dubbed a real estate boom by Forbes. It’s referred to as something more cynical by locals. As you watch this happen, you begin to question whether the tax will actually pay for what it says it will or if it will just change where the wealthy spend their winters.

The political map is more disorganized than anticipated. In Los Angeles, Bernie Sanders organized a rally in support of the tax. Ro Khanna, whose district includes a large portion of the venture capital industry, is in favor of it, but he is currently up against a major obstacle financed by some of his own voters. Governor Newsom describes it as detrimental. Tom Steyer, a billionaire himself, is in favor of it. It is opposed by populist firebrand Katie Porter. This situation lacks a clear ideological boundary.

Something has already changed, whether or not the tax is approved. Specific addresses, specific founders, and specific tax bills have replaced abstract opinion pieces in the discussion of wealth in California. The billionaires aren’t observing out of interest. They are keeping an eye on things because they will be affected in one way or another.