California Voters to Decide on One-Time Billionaire Tax
The measure has split Democrats and labor unions ahead of the vote.
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The odds
Each tick is a source publishing on this story
Price data
| Time | Chance of yes |
|---|---|
| now | 96% |
| 4 Oct, 16:55 UTC | 96% |
| 4 Oct, 14:14 UTC | 95% |
| 3 Oct, 22:43 UTC | 99% |
| 3 Oct, 07:06 UTC | 95% |
| 2 Oct, 21:49 UTC | 96% |
| 29 Sept, 14:36 UTC | 99% |
| 28 Sept, 19:18 UTC | 95% |
| 26 Sept, 19:07 UTC | 96% |
| 26 Sept, 03:38 UTC | 97% |
| 25 Sept, 22:40 UTC | 97% |
| 25 Sept, 19:53 UTC | 95% |
| 23 Sept, 08:48 UTC | 94% |
The story so far
1 publisher has covered this in 1 article since 3 Oct 2026. NPR Politics published first, on 3 October at 11:47 UTC.
3 prediction markets price this story:
- Yes — the market puts it at 96%, with $20 traded in the last 24 hours, closing 3 Nov 2026. The market resolves to Yes if California holds an official one-time billionaire tax ballot initiative before November 5, 2026. Otherwise, it resolves to No. Readers often mistake any proposed legislation or campaign activity for the required official ballot vote.
- Before Jan 1, 2027 — the market puts it at 25%, with $1 traded in the last 24 hours, closing 1 Jan 2027. The outcome is Yes if California's 2026 billionaire tax becomes legally operative between now and January 1, 2027. It is No if the tax does not become legally operative within that window. Readers often mistake the news story about the campaign for proof that the tax is already in effect.
- In 2026 — the market puts it at 35%, with $25k traded in the last 24 hours, closing 3 Nov 2027. The market resolves to Yes if a specific one-time tax on billionaires appears on a California ballot and wins voter approval. It resolves to No if that initiative fails or does not appear on the ballot. Readers often mistake general billionaire taxes for this specific ballot measure.
Odds are the market's probability that the outcome happens, updated every few minutes. They are information about what traders expect, not a forecast we make and not investment advice.
Sources
Every article we clustered into this story. Headlines link to the publisher.
Markets on this story
- Kalshi Yes 96% −3
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- Kalshi Before Jan 1, 2027 25% −9
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- Kalshi In 2026 35%
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In this story
- California
- Democrats
- labor unions