PayPal Mafia’s Peter Thiel makes one of his biggest donations to California group in Silicon Valley that is fighting …

PayPal co-founder Peter Thiel has donated $3 million to a California business group leading the fight against a proposed billionaire wealth tax. In December 2025, the venture capitalist contributed to the California Business Roundtable, a Sacramento-based lobbying group that represents large employers and corporate interests. The donation positions Thiel as one of the earliest and most prominent financiers of an emerging campaign to stop the 2026 Billionaire Tax Act before it reaches voters.

A New York Times report cited a public disclosure to claim that the $3 million contribution is the first seven-figure cheque publicly tied to opposition to the billionaire tax proposal.