Legal·11 min read·LOS ANGELES
Are Prediction Markets Legal in California? (2026 Guide)
Yes. Prediction markets are legal in California because they are CFTC-regulated event contracts, not sports bets. Here's the full legal picture, what you can trade, and how to think about ongoing regulatory challenges.
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Sources & further reading
Every figure and legal claim on this page traces back to a primary source. These are the ones we checked, open them and verify us.
- Commodity Exchange Act (7 U.S.C. § 1 et seq.)
The federal statute that preempts state gambling law for event contracts.
- California Secretary of State
Official source for California ballot measures, propositions, and certified election results.
- California Attorney General: gambling in California
The state's own summary of what is and isn't legal wagering in California.
- CFTC: Commodity Futures Trading Commission
The federal regulator that authorizes and supervises every event-contract exchange we cover.
- CFTC designated contract markets registry
Official list of registered exchanges, where we verify a platform's DCM status.
Frequently asked questions
Are prediction markets legal in California?
- Yes. Prediction markets are legal in California because they operate as CFTC-regulated event contracts under federal commodities law, which preempts state gambling regulation. California residents can legally use Kalshi, Sleeper, Chalkboard, Novig, Rebet, Crypto.com, and other CFTC-regulated platforms.
Why isn't this the same as sports betting?
- Sports betting is regulated at the state level under gambling law. Prediction markets are regulated federally by the CFTC as event contracts, which are financial instruments. Different product, different regulator, different legal framework.
Did California legalize online sports betting?
- No. Propositions 26 and 27 both failed in November 2022. California has no legal online sports betting, and there is no active legislative effort to change that.
Can I use Kalshi from California?
- Yes. Kalshi is a CFTC-regulated Designated Contract Market available in 48 states plus D.C., including California. Sign up takes under ten minutes.
Can I use Polymarket from California?
- Polymarket is relaunching for US traders through its acquisition of a CFTC-licensed exchange. As the US product rolls out, it is legally available to California residents under federal commodities law.
What can I trade from California?
- Sports outcomes (including all World Cup 2026 markets), election results, economic data, Oscars and Emmys, crypto price targets, and more. Event contract coverage is broader than a traditional sportsbook.
Is this going to stay legal?
- The federal legal framework is settled enough that the major platforms operate openly today. Ongoing state-level challenges and future Supreme Court review could narrow the scope of sports contracts specifically, but a total shutdown of prediction markets is highly unlikely. Non-sports markets face minimal legal risk.
Do I pay California state tax on winnings?
- Yes. Gains from event contracts are taxable as ordinary income or capital gains depending on holding period and classification. Keep records and consult a tax professional for your specific situation.
What's the minimum age?
- 21+ across platforms. Each platform's exact age requirement is listed at sign-up.
Are offshore sportsbooks legal in California?
- No. Offshore sportsbooks operate outside US regulatory oversight and are not a legal option for California residents. CFTC-regulated prediction markets are the legal alternative.
Which prediction market platform has the highest rating for California residents?
- Polymarket is ranked as the top platform for California users due to its deep liquidity and wide range of markets. Upstate Crypto.com follows as the second choice for its regulatory compliance, while Kalshi is ranked third. Users should note that Kalshi provides 1099-B tax forms while Polymarket requires self-reporting.
Why were Propositions 26 and 27 relevant to prediction markets?
- Propositions 26 and 27 failed to pass in 2022, which meant online sportsbooks remained illegal in California. However, prediction markets utilize event contracts regulated by the CFTC at the federal level. This regulatory distinction allows Californians to legally trade event outcomes even though traditional sports betting apps cannot operate in the state.
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Next steps
Top platforms Californians are using:
Kalshi
The regulatory leader.
Sign up at KalshiCertain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 21+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
Rebet
Social-first peer-to-peer sports prediction. Travel-only: not available to California residents.
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