Overview
- A new campaign-finance filing published Aug. 10–11 shows Sergey Brin gave an additional $20 million to Build a Better California, bringing his known spending against Prop 40 to just over $100 million.
- Proposition 40 would impose a one-time 5 percent tax on the net worth of roughly 200 California billionaires with most revenue earmarked for state health care programs.
- Build a Better California is using Brin’s donations to back competing ballot measures that would audit or restrict new special taxes and could limit or nullify Prop 40 before voters decide in November.
- Governor Gavin Newsom has publicly opposed Prop 40 and urged a national billionaire tax instead, while some tech moguls are relocating or restructuring residency to avoid the levy and others, like Nvidia’s Jensen Huang, have said they would accept paying it.
- The fight tracks broader fiscal stakes for California because reporters cite possible federal Medicaid funding cuts next year and it could drive legal and migration responses that change the state’s tax base and long-term revenue picture.