Why Silicon Valley is really talking about fleeing California (it’s not the 5%)

Silicon Valley is currently buzzing with anxiety over a proposed wealth tax in California, which many believe could drive billionaires out of the state. This concern stems not from the anticipated 5% tax rate, but rather from how the tax would apply to founders based on their voting shares, rather than their actual equity holdings. Take Larry Page, for instance. He owns about 3% of Google but controls roughly 30% of its voting power through a dual-class stock structure. Under the new tax proposal, he would be taxed on that 30%, which could translate into a staggering bill for a company valued in the hundreds of billions of dollars. One founder from SpaceX, who is developing grid technology, could face a tax debt during his Series B funding round that would essentially erase his entire stake in the company. David Gamage, a law professor at the University of Missouri and a key architect of the proposal, believes the reaction from Silicon Valley is exaggerated. He commented, "I don’t understand why the billionaires just aren’t calling good tax lawyers," suggesting that founders could defer taxes on their private stock until they are sold. He explained that in the event of a failed startup, there would be no tax owed, but a successful venture would require California to take a percentage of the eventual profits. However, tax experts argue that the process of determining valuations for startups is complex and fraught with uncertainty, making it difficult to gauge future worth accurately. Jared Walczak, a tax expert, noted that differing appraisals can lead to vastly different tax implications, and if the state disputes a valuation, it could penalize the individual responsible for it. Meanwhile, California's healthcare workers' union is advocating for the wealth tax as a means to recover funding for health services, especially following cuts made by previous federal legislation. They aim to raise around $100 billion from roughly 200 billionaires, with the tax retroactively applying to anyone residing in California as of January 1, 2026. The backlash against the proposal has been significant and spans across political lines, with a group of Silicon Valley elites forming a chat group titled "Save California" to coordinate their opposition. Figures such as David Sacks and Chris Larsen have publicly condemned the proposal, dubbing it "Communism" and poorly defined. In light of these developments, some billionaires are taking preemptive steps. Reports indicate that Larry Page has invested $173.4 million in Miami properties, while Peter Thiel's firm has leased office space in the city, signaling a potential shift away from California. Even Governor Gavin Newsom has voiced his opposition to the tax, stating his determination to thwart the initiative. "This will be defeated, there’s no question in my mind," he asserted, emphasizing his commitment to protecting the state's interests. Despite the pushback, the union remains resolute, with members like Debru Carthan arguing that the tax is necessary to keep emergency rooms operational and to safeguard patient lives. The initiative needs 875,000 signatures to make it onto the November ballot, where it would require a simple majority to pass.