Billionaires Launch Ad Blitz Against California Wealth Tax

The campaign against the measure, led by groups such as Building a Better California and Californians Against Wasteful Spending and Higher Taxes, relies on aggressive messaging that sidesteps the involvement of the billionaires funding the effort. Instead, their broadcast spots highlight opposition from teachers' unions and Governor Gavin Newsom. While Brin’s organization is reportedly prepared to spend over $90 million on ballot initiatives this cycle, proponents of the tax—led by the Service Employees International Union-United Healthcare Workers West—are opting for a grassroots strategy of door-knocking and digital outreach to counter the financial disparity.

Escalating the rhetoric, a group backed by Thiel recently released an online advertisement featuring AI-generated caricatures of Senator Bernie Sanders and other supporters seizing personal property from citizens. Independent analysts have flagged the content as fundamentally misleading. The ad claims the tax would apply to ordinary residents and require detailed asset reporting, whereas the language of Proposition 40 limits the levy to individuals with $1 billion or more in assets. Proponents note that under the proposed law, most Californians would simply confirm their eligibility by checking a box, debunking the 'everyone tax' narrative deployed by opponents.