Proposition 40 Targets $1 Billion Fortunes With 5% One-Time Tax

California voters will decide in the upcoming midterms whether to impose a one-time tax of 5% on individual fortunes exceeding $1 billion. Proposition 40, if passed, would direct nine-tenths of the collected revenue to the state’s Medicaid program. The measure seeks to address funding needs in the public health system by tapping into the wealth of the state’s highest earners.

A group of Silicon Valley billionaires, including Google co-founder Sergey Brin, has spent over $333 million campaigning against the proposal. They warn that the tax will drive wealthy residents out of the state. The spending underscores the intensity of the debate surrounding wealth taxation in a key election year.

Proponents of the tax point to historical precedents where new levies, such as the income tax, initially faced resistance before becoming standard. The Supreme Court struck down an early income tax as unconstitutional in 1895, but the 16th Amendment ratified in 1913 normalized such collection. Advocates suggest that a wealth tax may follow a similar trajectory, becoming unremarkable within a decade if adopted now.

Critics argue that a one-time tax recovers value only after it has already been created and protected by legal structures. They contend that the origins of extreme wealth often rely on public financing. For instance, foundational technologies for the iPhone, including GPS and voice recognition, were funded by the Defense Advanced Research Projects Agency in the 1970s. Google’s search algorithm grew out of a National Science Foundation project at Stanford.

SpaceX, whose Nasdaq listing made Elon Musk the world’s first trillionaire in June, received $396 million from NASA for rocket and capsule development. The company later secured $1.6 billion to fly cargo to the space station and $2.6 billion to transport astronauts. Musk also spent $366 million supporting Republican causes during this election cycle.

The debate centers on how the government structures deals with private companies. In 2009, the Department of Energy issued $465 million in loan guarantees to Tesla and $500 million to Solyndra. Solyndra went bankrupt, leaving taxpayers with the loss, while Tesla repaid its loan nine years early, causing the government’s equity warrants to lapse. This dynamic illustrates how public risk is often socialized while rewards are privatized.

Policymakers are now exploring stricter conditions for public funding. The CHIPS and Science Act attached conditions to $52.7 billion in semiconductor funding, specifying plant locations and job creation. Similar terms are being considered for future investments in artificial intelligence, aiming to secure a return on public risk from the outset rather than relying on later redistribution.