The Prediction Markets

California wealth tax defeats opposing propositions?

Closes
Nov 4, 2026, in 12 days
Traded
$1K
Venues
Polymarket
Prices updated
6 min ago
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What the markets expect

Yes 15%

Only Polymarket lists this market, so there is no second price to compare.

Yes 15%No 85%

Odds by venue

Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue, the oldest 6 min ago. Ages are as of when this page was built.

  • Polymarket
Yes
15%
Polymarket 15%polled, 6 min agoBest Yes 16¢ on Polymarket, $100 pays $625 (6.25x)
Polymarket
Contract
Yes
Last price
15%
As of
Polled 6 min ago
Buy Yes
16¢
Sell Yes
14¢
$100 on Yes pays
$625 (6.25x)
Volume
$1K
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: sos.ca.gov

How the odds have moved

The leading outcome on both venues, with the consensus between them. Hover for exact values.

  • Yes

Order books

Each venue’s resting orders for the Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Top of book

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

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Cover Yes and No across venues

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.04 × price × (1 − price) per share (politics rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "California wealth tax defeats opposing propositions?". Yes leads at 15%. $1K has traded across 1 outcome on Polymarket. The market is expected to resolve by Nov 4, 2026.

Propositions 40, 41, and 42 are California ballot measures currently scheduled for voting on November 3, 2026. Proposition 40 would apply a one-time 5% wealth tax on the assets of roughly 200 California billionaires, to be paid over five years. Proposition 41 would audit new tax spending and ban new taxes from being exempt from the state spending cap. Proposition 42 would prevent retroactive taxes and new taxes on personal property. Under the California Constitution, Article II, Section 10, subdivision (b), “if provisions of two or more measures approved at the same election conflict, the provisions of the measure receiving the highest number of affirmative votes shall prevail.” Therefore, if either Proposition 41 or 42 receive a higher number of affirmative votes than Proposition 40, its proposed wealth tax would not take effect. This market will resolve to “Yes” if Proposition 40 is approved by a majority of voters and receives more valid affirmative votes than both Proposition 41 and Proposition 42 individually at the specified election. Otherwise, this market will resolve to “No”.

 If any of the specified ballot measures are renumbered, the renumbered ballot measure will count as its successor for the purposes of this market. If Proposition 40 is not approved by a majority of voters at the specified election, this market will resolve to "No". The combined totals of valid affirmative votes received by both Propositions 41 and 42 will have no bearing on resolution of this market. This market will only consider the individually received totals of valid affirmative votes by both Propositions 41 and 42 for resolution. If Proposition 40 is approved by a majority of voters and voting on Proposition 40 happens at a different time than voting on both Propositions 41 and 42, this market will resolve to “Yes”. If Proposition 40 is approved by a majority of voters and is only challenged by one of Propositions 41 or 42 on the same ballot, this market will resolve according to whether Proposition 40 receives more valid affirmative votes than the opposing measure appearing on the same ballot. If Proposition 40 defeats the opposing measures on the same ballot, but is later made ineffective by a court decision or subsequent ballot measure, that will have no bearing on resolution of this market. If voting on Proposition 40 does not occur, or the results thereof are not known definitively, by July 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/).

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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