As of September 3, 2026, Polymarket prices “Billionaire one-time wealth tax passes in California election 2026?” at 28% YES with $3.7M traded. 3 tracked wallets hold a position here; the dominant side is NO.
California's Initiative 25-0024 would levy a one-time 5% tax on billionaire wealth, but markets give it just 28% to pass in November.
Whether a billionaire one-time wealth tax passes in California election now rests with voters after the measure cleared signature-gathering to qualify for the November 2026 ballot. Formally Initiative No. 25-0024, the "2026 Billionaire Tax Act" was filed by SEIU-United Healthcare Workers West and would impose a one-time 5% tax on the net wealth of any California resident worth more than $1 billion. The levy would apply retroactively to billionaires who were state residents as of January 1, 2026, with 90% of revenue directed to health care programs and the remaining 10% to education and food assistance. California is home to roughly 200 billionaires, more than any other state. [Desert Sun, Jun 18]
The initiative, appearing on ballots as Proposition 40, has exposed divisions within the state Democratic Party even after party leaders formally endorsed it. Supporters argue the tax would offset cutbacks tied to Trump administration reductions in health care and food assistance funding, while opponents warn it would undercut long-term state tax revenues and drive high earners out of California. A Los Angeles Times poll published August 14, 2026 found Californians split on the proposal, with the electorate simultaneously souring on a separate voter ID requirement. Tech billionaires have already qualified two counter-initiatives designed to blunt the wealth tax. [LA Times, Aug 14]
Legal and political headwinds remain substantial as the campaign intensifies, with billionaire-funded groups signaling they are ready to spend heavily to defeat the vote. Advisors caution that even if a billionaire one-time wealth tax passes in California election results this fall, retroactive application and constitutional challenges could delay or reshape enforcement. Ballotpedia lists the measure among several qualifying for the November statewide ballot, and analysts expect the contest over whether the billionaire one-time wealth tax passes in California election to become one of the cycle's costliest initiative fights. [Ballotpedia, Aug 3]
See which tracked wallets hold this market (entries, size, P&L), the models’ fair value and entry targets — and get an alert within a minute when they trade.
Unlock PRO — $29/mo6/7 models agree on NO, fair value 19c vs market 28c. BUY NO at 28c — models see 9c of upside.
| Model | Says | Fair Value estimated fair price | Confidence |
|---|---|---|---|
| MATH PIN Model | NO | 98c | — |
| MATH Compound Signal | NO | 63c | — |
| AI Claude Analysis | NO | 80c | 70% |
| AI DeepSeek Quant | NO | 80c | 72% |
| AI Grok Contrarian | YES | 48c | 41% |
| AI Gemini Flash | NO | 75c | 75% |
| AI Kimi Macro | NO | 88c | 78% |
6 of 7 models estimate NO fair value above market (63–98c vs 72c). Kimi Macro leads with 78% confidence.
Models estimate fair value of NO at 81c — market prices it at 72c. 9-point gap supports NO.
Smart money is uniformly positioned on NO, with entries clustered in the 55c-63c range, signaling conviction that the tax will not pass. The lack of any YES entries among tracked wallets suggests informed traders see limited probability of passage, and the dominant NO side likely reflects institutional or high-conviction capital. This one-sided positioning implies continued downward pressure on YES unless new catalysts emerge.
| Wallet | Category | Side | Amount | P&L | |
|---|---|---|---|---|---|
| 0x8152..da | Smart | NO | $3.0K | +25% | |
| 0x44c1..c1 | MM | NO | $24.3K | +22% | |
| 0xde7b..4b | MM | NO | $2.5K | +31% |
All tracked NO positions are in profit, with entries ranging from 55c to 63c against a current YES price of 28c (implying NO at 72c). This deep profitability suggests strong support for NO at current levels, as holders have significant cushion and may resist selling unless price moves further against them. The absence of profitable YES positions indicates no trapped longs defending higher prices, reducing upside pressure on YES.
Polymarket prices YES at 28c with $3.7M in total volume. Our model estimates fair value at 19c. Significant 9-point gap — model sees NO as substantially mispriced.
| Platform | YES Price | Volume |
|---|---|---|
| Polymarket | 28c | $3.7M |
| Our Model | 19c | — |