Has California sued Kalshi or ordered it to stop?

Yes. Oct. 8, 2026: The Ninth Circuit's mandate was entered in the district court, which set a case-management conference for October 21, 2026. Sept. 16, 2026: A unanimous Ninth Circuit panel (No. 25-7504; Judges Murguia, McKeown and Paez) reversed the denial of a preliminary injunction on the IGRA claim, finding the tribes likely to succeed, and remanded for the other injunction factors without itself ordering an injunction; it affirmed dismissal of the tribes' Lanham Act claim. November 2025: Judge Jacqueline Scott Corley denied the tribes' motion for a preliminary injunction (month only reported); the tribes appealed.

How old do you have to be to use Kalshi in California?

18. That is Kalshi's minimum age, and it lists no different rule for California.

Is sports betting legal in California?

Not legal. No legal sports betting; LSR lists California among states without it.

Which court will decide whether California can regulate Kalshi?

Federal appeals from California go to the Ninth Circuit, which ruled for the states on Aug. 28, 2026. 3 petitions now ask the U.S. Supreme Court to settle the question nationally.

CA · Kalshi · Checked Oct. 21, 2026

Is Kalshi legal in California?

No restriction found California: No public action found

The short answer

Kalshi does not publish a list of states where it is unavailable, and we found no court order, regulator action or Kalshi notice that stops it from serving California as of Oct. 22, 2026.

California has 5 public actions on record that name Kalshi. The latest (court order, Oct. 8, 2026): The Ninth Circuit's mandate was entered in the district court, which set a case-management conference for October 21, 2026.

Federal appeals from California go to the Ninth Circuit, which ruled for the states on Aug. 28, 2026.

Availability: Kalshi Help Center: Signing Up as an Individual (updated March 10, 2026), checked Oct. 22, 2026. A summary of public actions, not legal advice.

Follow California

Cite this page

Bluebook

Is Kalshi Legal in California?, Prediction Market Laws (last updated Oct. 22, 2026), https://predictionmarketlaws.com/platforms/kalshi/california.

APA

Prediction Market Laws. (2026, October 22). Is Kalshi Legal in California?. https://predictionmarketlaws.com/platforms/kalshi/california

What California has done about Kalshi

Oct. 8, 2026
Court order
The Ninth Circuit's mandate was entered in the district court, which set a case-management conference for October 21, 2026.
Source: DeFi Rate legal tracker
Sept. 16, 2026
Court order
A unanimous Ninth Circuit panel (No. 25-7504; Judges Murguia, McKeown and Paez) reversed the denial of a preliminary injunction on the IGRA claim, finding the tribes likely to succeed, and remanded for the other injunction factors without itself ordering an injunction; it affirmed dismissal of the tribes' Lanham Act claim.
Source: InGame
June 12, 2026
Other development
Attorney General Bonta joined a 37-state amicus brief in the Sixth Circuit supporting Ohio's authority to apply its gaming laws to Kalshi.
Source: California Attorney General press release
November 2025
Court order
Judge Jacqueline Scott Corley denied the tribes' motion for a preliminary injunction (month only reported); the tribes appealed.
Source: Action Network prediction market lawsuit tracker
July 22, 2025
Tribal action
Three tribes sued Kalshi and Robinhood in the Northern District of California, alleging sports contracts offered on their lands violate IGRA and their compacts.
Source: DeFi Rate legal tracker

All 6 actions in California

Court cases

Blue Lake Rancheria, et al. v. Kalshi, Inc., et al.U.S. District Court for the Northern District of California (on remand from the U.S. Court of Appeals for the Ninth Circuit), 3:25-cv-06162-JSC (N.D. Cal.); 25-7504 (9th Cir.)Remanded

The legal backdrop in California

State status: No public action foundWe found no public enforcement, litigation or enacted law. Pending bills may still be listed on the state's page.
Online sports betting: Not legalNo legal sports betting; LSR lists California among states without it.
Federal appeals court: Ninth CircuitRuled for the states.
Who regulates: California Attorney General (Department of Justice); California Gambling Control Commission
Laws and bills: 3 on record

Using Kalshi in California

Minimum age: 18
Identity checks: Kalshi requires legal name, date of birth and a residential address (no commercial addresses or PO boxes) that match a government ID. It asks for a live in-app photo of a driver's license or passport. It may also ask for proof of address, employment information or source of funds. It may request a Social Security number at any point after signup, which it uses for identity verification and tax reporting; an SSN is not required to deposit. (Help articles updated June 30 and August 25, 2026.) Source
Tax forms: Kalshi says users who meet IRS reporting thresholds get Form 1099-INT (interest), 1099-MISC (credits and rewards), 1099-B (proceeds from crypto transfers) and 1099-DA (digital asset reporting from ZeroHash). The forms appear under Tax Info in the Account tab, and some are emailed through Zenwork. Kalshi gives no dollar thresholds or issue dates. Trading profit-and-loss statements are in the documents tab (help article updated June 22, 2026). SourceWhat the platform says it reports; not tax advice.

Other platforms in California

KalshiNo restriction found
Polymarket USNo restriction found
Gemini PredictionsNo restriction found
RobinhoodNo restriction found
Crypto.comNo restriction found
CoinbaseNo restriction found
WebullNo restriction found
DraftKings PredictionsOffered
FanDuel PredictsOffered
UnderdogOffered
PrizePicksOffered
Fanatics MarketsOffered

Questions people ask

Is Kalshi legal in California?: Kalshi does not publish a list of states where it is unavailable, and we found no court order, regulator action or Kalshi notice that stops it from serving California as of Oct. 22, 2026. California has 5 public actions on record that name Kalshi. The latest (court order, Oct. 8, 2026): The Ninth Circuit's mandate was entered in the district court, which set a case-management conference for October 21, 2026. This summarises public actions; it is not legal advice.
Has California sued Kalshi or ordered it to stop?: Yes. Oct. 8, 2026: The Ninth Circuit's mandate was entered in the district court, which set a case-management conference for October 21, 2026. Sept. 16, 2026: A unanimous Ninth Circuit panel (No. 25-7504; Judges Murguia, McKeown and Paez) reversed the denial of a preliminary injunction on the IGRA claim, finding the tribes likely to succeed, and remanded for the other injunction factors without itself ordering an injunction; it affirmed dismissal of the tribes' Lanham Act claim. November 2025: Judge Jacqueline Scott Corley denied the tribes' motion for a preliminary injunction (month only reported); the tribes appealed.
How old do you have to be to use Kalshi in California?: 18. That is Kalshi's minimum age, and it lists no different rule for California.
Is sports betting legal in California?: Not legal. No legal sports betting; LSR lists California among states without it.
Which court will decide whether California can regulate Kalshi?: Federal appeals from California go to the Ninth Circuit, which ruled for the states on Aug. 28, 2026. 3 petitions now ask the U.S. Supreme Court to settle the question nationally.