Billionaires Spent $378 Million to Kill California's Prop 40 Tax

Photo: Tony Webster / Wikimedia Commons / CC BY-SA 2.0

California voters have rejected Proposition 40, the one time billionaire tax, and the Associated Press has confirmed the final shape of it... 52.8 percent no, 47.2 percent yes. The measure would have placed a one time 5 percent tax on the net worth of California residents worth more than $1 billion, roughly 200 people, who lived in the state on January 1, 2026. Supporters, led by the healthcare workers union SEIU United Healthcare Workers West, said it would have raised about $100 billion for healthcare and education.

Now look at the money that killed it, because that is the real story. Ultra wealthy opponents poured $378.4 million into defeating the measure, according to CalMatters tally. The yes side raised $33.5 million. That is more than eleven to one. Google cofounder Sergey Brin alone gave $102 million to a committee he founded to oppose the tax... one man spent three times what the entire campaign for the tax raised, to protect a 5 percent one time levy on people worth over a billion dollars.

Let that ratio sit for a minute. Two hundred billionaires were asked to pay once, at 5 percent, into healthcare and education for millions of Californians. They would have remained billionaires afterward, every single one of them. Instead, they spent $378 million to make sure the question never even got close, flooding the state with a campaign that money bought and regular voters could not match. Money won again, and it was not subtle about it.

The unions behind Prop 40 saw the loss coming and vowed to try again in 2028 if Californias Legislature fails to deliver a real solution for healthcare funding strained by federal cuts. That fight is not over, and it should not be. Prop 42, a countermeasure that would prohibit future wealth taxes, was trailing in the count as results firmed up, which means even the billionaires lock in measure may fail. The door is bruised, not closed.

Why it matters reaches far beyond California. This was the first real test in the country of taxing extreme wealth directly, in the richest state, with labor behind it, in a midterm year when Democrats won almost everything else on the map. It still lost, because the other side could outspend the entire yes campaign with the loose change of one fortune. If $378 million can buy a veto in California, voters everywhere should understand exactly what unlimited money in politics is purchasing... a country where the richest people alive simply do not have to contribute like everyone else.

What happens next is the Legislature, and then 2028. Lawmakers in Sacramento now own the healthcare funding hole they said the tax was needed to fill. Democrats nationally should study this race hard... the yes side was outspent eleven to one and still took 47.2 percent, which means the idea itself is popular and the money is the obstacle. Taxing the rich is the whole ballgame, and California just showed both the path and the price of walking it.

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