Are Prediction Markets Legal in California?

Status in California as of October 3, 2026

Platform	Status	Why (source)	Welcome offer in California
Kalshi	Available, dispute pending	Kalshi accepts California residents; California has taken no enforcement action against the platforms, but Kalshi has switched off its markets on three tribes' lands after a Sep 16, 2026 Ninth Circuit ruling, and the Ninth Circuit's Aug 28, 2026 Nevada ruling binds California's federal courts. (source (opens in a new tab))	Valid: Trade $25 and Get $25!
Polymarket US	Available, dispute pending	Polymarket US accepts California residents; California has taken no enforcement action against the platforms, but Kalshi has switched off its markets on three tribes' lands after a Sep 16, 2026 Ninth Circuit ruling, and the Ninth Circuit's Aug 28, 2026 Nevada ruling binds California's federal courts. (source (opens in a new tab))	Valid: Deposit $10 get a $25 Trading Bonus!
ProphetX	Available, dispute pending	ProphetX accepts California residents; California has taken no enforcement action against the platforms, but Kalshi has switched off its markets on three tribes' lands after a Sep 16, 2026 Ninth Circuit ruling, and the Ninth Circuit's Aug 28, 2026 Nevada ruling binds California's federal courts. (source (opens in a new tab))	Valid: Trade $50, Earn $75!
OG (by Crypto.com)	Available, dispute pending	OG accepts California residents; California has taken no enforcement action against the platforms, but Kalshi has switched off its markets on three tribes' lands after a Sep 16, 2026 Ninth Circuit ruling, and the Ninth Circuit's Aug 28, 2026 Nevada ruling binds California's federal courts. (source (opens in a new tab))	Valid: Trade $25 Get $50 in Rewards! (New users only)
Novig	Available, dispute pending	Novig accepts California residents; California has taken no enforcement action against the platforms, but Kalshi has switched off its markets on three tribes' lands after a Sep 16, 2026 Ninth Circuit ruling, and the Ninth Circuit's Aug 28, 2026 Nevada ruling binds California's federal courts. (source (opens in a new tab))	Valid: Deposit $10 Get $50 in Trade Credits!
Rebet	Not offered	Rebet is a sweepstakes app, not a CFTC-regulated exchange; its sweepstakes rules exclude California. (source)	Not valid here

What changed (newest first)

• Sep 24, 2026 — Kalshi tells court it disabled its markets on three California tribes' lands. Bloomberg Tax reported that Kalshi told a federal court it had voluntarily disabled its prediction market content on the lands of three California tribes following the Ninth Circuit ruling of September 16. Source: Bloomberg Tax (opens in a new tab)
• Sep 16, 2026 — Ninth Circuit sides with two California tribes in case against Kalshi. In Blue Lake Rancheria v. Kalshi, the Ninth Circuit partly reversed the denial of a preliminary injunction, finding the two tribes likely to succeed on claims that Kalshi sports event contracts offered on their lands violate the Indian Gaming Regulatory Act. Source: U.S. Court of Appeals for the Ninth Circuit (opinion, No. 25-7504) (opens in a new tab)
• Sep 11, 2026 (federal) — Crypto.com asks Supreme Court to review Ninth Circuit ruling (No. 26-344). Source: Supreme Court of the United States, docket No. 26-344 (opens in a new tab)
• Sep 10, 2026 (federal) — Kalshi seeks Ninth Circuit rehearing; Robinhood petitions Supreme Court. Source: Sports Betting Dime (opens in a new tab)
• Sep 2, 2026 (federal) — New Jersey asks U.S. Supreme Court to review Kalshi preemption ruling. Source: New Jersey Office of the Attorney General (opens in a new tab)
• Aug 28, 2026 (federal) — Ninth Circuit rules for Nevada regulators in Kalshi case. Source: U.S. Court of Appeals for the Ninth Circuit (opinion, No. 25-7516) (opens in a new tab)
• Aug 13, 2026 — Class action filed in California federal court over DraftKings Predictions. A proposed class action, Andrio v. DraftKings Inc. and GUS III LLC (U.S. District Court for the Central District of California, Southern Division, No. 8:26-cv-02199, filed Aug 13, 2026), alleges DraftKings offers illegal sports betting through its prediction market product and seeks damages, restitution and an order blocking it in the state. Source: Event Horizon (quoting SBC Americas) (opens in a new tab)
• Aug 13, 2026 — Picayune Rancheria dropped from tribal lawsuit against Kalshi. Trade press reported that the court approved a stipulation dismissing the Picayune Rancheria of the Chukchansi Indians from the tribal lawsuit and appeal against Kalshi, leaving two tribes as plaintiffs. Source: Sports Betting Dime (opens in a new tab)
• Jun 12, 2026 — California Attorney General joins multistate brief against Kalshi. Attorney General Rob Bonta joined a coalition of 37 attorneys general in a Sixth Circuit brief supporting Ohio's authority to enforce its gambling laws against Kalshi. Source: California Attorney General (opens in a new tab)
• Mar 27, 2026 — Governor Newsom extends insider-betting ban for state officials to prediction markets. Governor Gavin Newsom issued an executive order extending existing bans on state officials profiting from inside knowledge so that they cover prediction markets. Source: Office of the Governor of California (opens in a new tab)
• Mar 18, 2026 — California lawmakers announce bill on prediction market ads to minors. Assemblymembers Mia Bonta and Pilar Schiavo announced a bill that would bar fantasy sports and prediction market apps from advertising to minors or letting them use the services, according to a press brief. Source: CDC Gaming (brief) (opens in a new tab)
• Nov 10, 2025 — Federal judge denies California tribes' bid to block Kalshi on tribal lands. U.S. District Judge Jacqueline Scott Corley denied a preliminary injunction sought by three California tribes that would have required Kalshi to stop offering sports event contracts on their lands. Source: CDC Gaming (brief) (opens in a new tab)

Why California Is the Highest-Stakes Prediction Market State

Three things make California uniquely combustible:

1. The country's largest tribal gaming economy. California tribes operate 60+ casinos generating $9B+ annually. Federal CFTC sports contracts directly threaten the exclusive gaming compacts that fund tribal governments, schools and health programs.
2. No competing legal sports betting market. Unlike New Jersey or Massachusetts (where state-licensed sportsbooks see Kalshi as a competitor), California has no legal online sportsbook revenue to protect. The fight is purely sovereignty + IGRA-based.
3. Sheer market size. California has 39M residents. If the tribes succeed in blocking sports event contracts here, it would cut Kalshi's addressable US sports-trading population by roughly 12%.

What California Residents Can Trade Right Now

• Game lines, spreads, totals, player props, and futures.
• Politics: 2026 California gubernatorial race (Newsom successor), House of Representatives control, US Senate, ballot propositions, 2028 presidential primary.
• Macroeconomics: Federal Reserve rate decisions, monthly CPI, GDP, recession probability.
• Crypto: Bitcoin and Ethereum price brackets, ETF flow contracts, regulatory event markets.
• Climate: California-specific markets including wildfire acreage, drought conditions, Sierra snowpack.
• Entertainment: Oscars, Grammys, Emmys, box office.

California-specific market depth is notable on Kalshi: California gubernatorial and ballot-proposition contracts routinely trade $1M+ open interest, more than any other state-political category.

Best Prediction Market Platforms for California Residents

Full sports catalog (NFL, NBA, MLB, NHL, college, golf, MMA, soccer), politics (CA-specific markets), macro, crypto, climate, entertainment. CFTC Designated Contract Market. $10 minimum deposit. Currently the primary target of California tribal litigation.

Routes prediction-market volume through Kalshi. Best for existing Robinhood brokerage users who want event contracts in the same app. Zero commission.

Polymarket US — Available in California following the QCX acquisition. Strongest crypto and political market depth. Funds in US dollars.

Because DraftKings does not hold a California sportsbook license (none exist), it can offer sports event contracts to CA residents — the same dynamic as Texas and Florida. 100% first-trade match up to $25.

FanDuel Predicts — Same dynamic as DraftKings: sports contracts available statewide because no FD California sportsbook exists. Backed by Flutter's $200–300M 2026 prediction-markets investment commitment.

Smaller catalog than Kalshi.

OG.com (Crypto.com's prediction brand) — Sports-forward platform available in California. Lower per-contract fees than Kalshi on high-volume sports markets.

Sleeper Picks — Fantasy-style prop markets, limited California catalog.

Rebet — Not available in California.

Novig — Peer-to-peer sports exchange, available in California: deposit $10, get $50 in trade credits with code RANKPREDICTS. Not currently licensed in California.

Chalkboard — Sports-only prop platform. Not currently available in California.

Eligibility Checklist for California Residents

• 18+ (federal CFTC standard — note this is lower than the 21+ used at California tribal casinos).
• US-issued government ID and SSN for KYC.
• Funding from a US bank account or debit card.
• California address verified by geolocation. (Note: prediction-market platforms use IP + payment-rail geolocation, not the GPS-based geolocation that licensed sportsbooks require.)

Tax Treatment for California Prediction Market Gains

• Federal: taxable, but the IRS↗ (opens in a new tab) hasn't issued guidance on event contracts; tax professionals argue for gambling income, capital gains or Section 1256 (60/40). Consult a tax professional.
• California state: California has the highest state income tax in the country (up to 13.3%). Gains are taxed as capital gains or ordinary income at the state level.

Local Sports Angle: What California Fans Can Trade

California has more major-league sports franchises than any other US state: Lakers, Warriors, Clippers, Kings, Suns adjacent (Los Angeles Lakers, LA Clippers, Sacramento Kings, Golden State Warriors), Rams, 49ers, Chargers, Raiders adjacent, Dodgers, Giants, Padres, Angels, A's, Sharks, Ducks, Kings (NHL), and several MLS teams.

This makes California one of the highest-value states in the US for sports event contract trading: deep liquidity, no licensed-sportsbook competition.

What could change the status

Dates we are watching: Nevada's responses to the Robinhood and Crypto.com Supreme Court petitions are now due November 13 and 16, 2026 (both extended in October), and Kalshi's response to New Jersey's petition is due November 9, 2026 (deadlines can be extended); the earliest the Supreme Court could act on the petitions is a conference in December 2026 or January 2027 (our estimate, not a scheduled date); the Ninth Circuit has not yet decided Kalshi's request for a rehearing by the full court; the Blue Lake Rancheria case is back in the federal district court after the Ninth Circuit's September 16, 2026 ruling. We re-check this page when any of these happen and log the change above.

Sources

• Front Office Sports: 'Purely Gaming': Inside the Tribal Fight Against Prediction Markets (opens in a new tab)
• Tribal Business News: Tribes warn CFTC move on sports prediction markets (opens in a new tab)
• Fortune: Kalshi's fight over sports betting is hurtling toward the Supreme Court↗ (opens in a new tab)
• Covers: California Prediction Markets — Best Sites & Legal Platforms 2026 (opens in a new tab)

Prediction markets in other states

• Alaska
• California
• Colorado
• Connecticut
• Florida
• Hawaii
• Illinois
• Kansas
• Maryland
• Massachusetts
• Minnesota
• Nebraska
• New Hampshire
• New Jersey
• New York
• North Dakota
• Oregon
• Pennsylvania
• Rhode Island
• Texas
• Utah
• Vermont
• Virginia
• Washington
• Wyoming
• Alabama
• Arizona
• Arkansas
• Delaware
• Georgia
• Idaho
• Indiana
• Iowa
• Kentucky
• Louisiana
• Maine
• Michigan
• Mississippi
• Missouri
• Montana
• Nevada
• New Mexico
• North Carolina
• Ohio
• Oklahoma
• Puerto Rico
• South Carolina
• South Dakota
• Tennessee
• Washington DC
• West Virginia
• Wisconsin

§ References & Sources

1. Commodity Futures Trading Commission (CFTC) (opens in a new tab)— U.S. federal regulator
2. CFTC Designated Contract Markets list (opens in a new tab)— CFTC
3. 26 U.S. Code § 1256 — Section 1256 contracts marked to market (opens in a new tab)— Cornell Law / U.S. Code
4. IRS Form 6781 — Gains and Losses From Section 1256 Contracts (opens in a new tab)— Internal Revenue Service
5. National Council on Problem Gambling — 1-800-GAMBLER (opens in a new tab)— NCPG

Frequently asked questions

Are prediction markets legal in California?

We don't give legal verdicts, but here is the status as of October 3, 2026: Kalshi, Polymarket US, ProphetX, OG and Novig: Available, dispute pending. California has taken no enforcement action against the platforms, but Kalshi has switched off its markets on three tribes' lands after a Sep 16, 2026 Ninth Circuit ruling, and the Ninth Circuit's Aug 28, 2026 Nevada ruling binds California's federal courts. Nationally, federal appeals courts are split on sports event contracts, all at the preliminary-injunction stage, and three Supreme Court petitions are pending; none has been granted.

Can I use Kalshi in California?

Status as of October 3, 2026: Available, dispute pending. Kalshi accepts California residents; California has taken no enforcement action against the platforms, but Kalshi has switched off its markets on three tribes' lands after a Sep 16, 2026 Ninth Circuit ruling, and the Ninth Circuit's Aug 28, 2026 Nevada ruling binds California's federal courts. Kalshi's welcome offer (Trade $25 and Get $25!) applies to California residents. Kalshi's minimum age is 18; we recommend 21+.

What has California done about prediction markets?

California has taken no enforcement action against the platforms, but Kalshi has switched off its markets on three tribes' lands after a Sep 16, 2026 Ninth Circuit ruling, and the Ninth Circuit's Aug 28, 2026 Nevada ruling binds California's federal courts. Most recent entries in our timeline: Sep 24, 2026: Kalshi tells court it disabled its markets on three California tribes' lands; Sep 16, 2026: Ninth Circuit sides with two California tribes in case against Kalshi; Aug 13, 2026: Class action filed in California federal court over DraftKings Predictions. Each entry above links to its source.

What could change the status in California?

Dates we are watching: Nevada's responses to the Robinhood and Crypto.com Supreme Court petitions are now due November 13 and 16, 2026 (both extended in October), and Kalshi's response to New Jersey's petition is due November 9, 2026 (deadlines can be extended); the earliest the Supreme Court could act on the petitions is a conference in December 2026 or January 2027 (our estimate, not a scheduled date); the Ninth Circuit has not yet decided Kalshi's request for a rehearing by the full court; the Blue Lake Rancheria case is back in the federal district court after the Ninth Circuit's September 16, 2026 ruling. We re-check this page when any of these happen and log the change above.