TOTAL VOLUME:

$154.3b

24H VOL:

$219,029,434

24H TRANSACTIONS:

2,984,028,936

OPEN INTEREST:

$1,869,293,526

411,051

Markets across

40,408

events

MATCHED EVENTS:

4,377

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

BETA
Dashboards
Tour
All
Politics
California Retroactive Tax Prohibition Proposition
⌛Ending Soon
polymarket

Will California's Retroactive Tax Prohibition Proposition pass?

Jul 1, 2026, 6:27 PM EST - Nov 3, 2026, 11:59 PM EST
Total volume:
$234
Volume 24h:
$0N/A
Liquidity:
$93
63%
Open interest:
$99N/A

California Retroactive Tax Prohibition Proposition

 - Polymarket

California Retroactive Tax Prohibition Proposition - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Nov 3, 2026

Time left: 01d:08h:36m

California Retroactive Tax Prohibition Proposition

55%chance
Amount

$

Trade on
polymarket

Trade on Polymarket

At 92¢ buys you 109 shares | Odds: 55% Total Payout: $109 | Net Profit: $9 Multiplier: 1.09x | ROI: 9% APY not meaningful Low liquidity
You will be redirected to the platform to complete this trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

California Retroactive Tax Prohibition Proposition

Trade
55%
2%
Yes 92¢No 83¢
75¢
$93
$234
0%
34%
N/A
1d 8h 36m
Active
Total markets: 1

Description

Proposition 42 is a California ballot measure currently scheduled for voting on November 3, 2026. It would prevent retroactive taxes and new taxes on personal property, which would offset the proposed wealth tax in Proposition 40. This market will resolve to “Yes” if the specified ballot measure is approved by a majority of voters at the California statewide general election currently scheduled for November 3, 2026. Otherwise, this market will resolve to “No.” If voting on the specified ballot measure does not occur, or the results thereof are not known definitively, by March 31, 2027, this market will resolve to “No”. This market will resolve based on a consensus of credible reporting. If there is ambiguity, this market will resolve solely based on official information from the State of California, including the California Secretary of State (https://www.sos.ca.gov/).

Polymarket

Proposition 42 is a California ballot measure currently scheduled for voting on November 3, 2026. It would prevent retroactive taxes and new taxes on personal property, which would offset the proposed wealth tax in Proposition 40. This market will resolve to “Yes” if the specified ballot measure is approved by a majority of voters at the California statewide general election currently scheduled for November 3, 2026. Otherwise, this market will resolve to “No.” If voting on the specified ballot measure does not occur, or the results thereof are not known definitively, by March 31, 2027, this market will resolve to “No”. This market will resolve based on a consensus of credible reporting. If there is ambiguity, this market will resolve solely based on official information from the State of California, including the California Secretary of State (https://www.sos.ca.gov/).

Frequently asked questions

On Polymarket, the dashboard for the California tax proposition market tracks the current odds of the proposition passing or failing, represented as a percentage chance. It also displays the price history of the market, showing how the odds have changed over time. You can see the 24-hour volume traded, which currently stands at $20, and the total volume traded since the market opened, which is $234. This provides a clear picture of market sentiment and activity surrounding this important California vote.

Currently, prediction market odds offer a different perspective than traditional polling data on this California proposition. While polls often show a relatively close race, this market indicates a stronger likelihood of a particular outcome. It’s important to remember that polls capture stated preferences, while this market reflects what people are willing to put their money on. This difference can be significant, as prediction markets often incorporate more information and incentivize honest predictions. Examining both sources provides a more comprehensive understanding of the potential results.

On Polymarket, this market is priced through a continuous trading mechanism where users buy and sell shares representing their belief about the outcome of the California proposition. The price of these shares fluctuates based on supply and demand, effectively creating a real-time probability assessment. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The current implied probability of the top outcome, as reflected by the share price, is 54.5%. This dynamic pricing allows traders to express their views and profit if their predictions prove accurate, leading to a market-driven forecast.

This market resolves around Nov 4, 2026, with the outcome confirmed once the official results of the California election are verifiable from credible public reporting. The resolution will be based on the final vote count certified by the relevant election authorities. This ensures a transparent and objective determination of whether the proposition passes or fails. Traders will then be able to claim their winnings or adjust their strategies based on the final result of this important vote.

Several signals could significantly impact this market before Nov 4, 2026. Major endorsements from influential political figures or organizations could shift sentiment. Unexpected economic data releases related to California's fiscal health might also influence traders’ perceptions. Furthermore, any significant media coverage or public debates focusing on the proposition’s potential impact could drive trading activity. Finally, shifts in broader political trends or voter turnout projections could also lead to changes in the odds for this market.