Has Arizona sued Kalshi or ordered it to stop?

Yes. July 21, 2026: The Ninth Circuit stayed Arizona's appeal of the injunction (No. 26-4281), in which Kalshi and Crypto.com's exchange (NADEX) are appellees or intervenors, until it decided the related Nevada appeals. May 5, 2026: The court granted the federal government a preliminary injunction barring Arizona's criminal and civil enforcement of its gambling and election-betting laws against event contracts on CFTC-registered exchanges. April 10, 2026: Judge Michael Liburdi issued a temporary restraining order halting Arizona's enforcement against Kalshi; the scheduled arraignment was called off. April 8, 2026: Judge Liburdi denied Kalshi's own motion for a TRO and preliminary injunction, relying mainly on the Anti-Injunction Act; Kalshi appealed in May (9th Cir. No. 26-2978), and that appeal is stayed. March 17, 2026: The attorney general filed a 20-count misdemeanor criminal information in Maricopa County Superior Court against KalshiEX LLC and Kalshi Trading LLC, covering sports and election contracts. May 21, 2025: The Arizona Department of Gaming sent KalshiEX and its CEO a cease-and-desist letter saying Kalshi was accepting unlawful wagers.

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

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

Is sports betting legal in Arizona?

Legal online. Mobile and retail sports betting is legal and regulated by the Arizona Department of Gaming.

Which court will decide whether Arizona can regulate Kalshi?

Federal appeals from Arizona 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.

AZ · Kalshi · Checked Oct. 21, 2026

Is Kalshi legal in Arizona?

No restriction found Arizona: In litigation

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 Arizona as of Oct. 22, 2026.

Arizona has 11 public actions on record that name Kalshi. The latest (Sept. 14, 2026): Arizona moved in the Ninth Circuit to summarily vacate the injunction as to sports-event contracts and remand the election-contract issues; no ruling had been reported.

Federal appeals from Arizona 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 Arizona

Cite this page

Bluebook

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

APA

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

What Arizona has done about Kalshi

Sept. 14, 2026
Other development
Arizona moved in the Ninth Circuit to summarily vacate the injunction as to sports-event contracts and remand the election-contract issues; no ruling had been reported.
Source: DeFi Rate legal tracker (snapshot)
Sept. 4, 2026
Other development
After the Ninth Circuit's Aug. 28 ruling for Nevada, Arizona told the court it would seek summary vacatur of the injunction as to sports contracts and a remand on election contracts.
Source: Arizona status report, 9th Cir. No. 26-4281
July 21, 2026
Court order
The Ninth Circuit stayed Arizona's appeal of the injunction (No. 26-4281), in which Kalshi and Crypto.com's exchange (NADEX) are appellees or intervenors, until it decided the related Nevada appeals.
Source: Justia docket, 9th Cir. No. 26-4281
June 12, 2026
Other development
The Arizona attorney general joined a 37-state amicus brief in the Sixth Circuit (KalshiEX LLC v. Schuler) supporting Ohio's authority to apply its gaming laws to Kalshi.
Source: California Attorney General (coalition press release)
May 5, 2026
Court order
The court granted the federal government a preliminary injunction barring Arizona's criminal and civil enforcement of its gambling and election-betting laws against event contracts on CFTC-registered exchanges.
Source: Arizona status report, 9th Cir. No. 26-4281 (Sept. 4, 2026)
April 10, 2026
Court order
Judge Michael Liburdi issued a temporary restraining order halting Arizona's enforcement against Kalshi; the scheduled arraignment was called off.
Source: Courthouse News (AP)
April 8, 2026
Court order
Judge Liburdi denied Kalshi's own motion for a TRO and preliminary injunction, relying mainly on the Anti-Injunction Act; Kalshi appealed in May (9th Cir. No. 26-2978), and that appeal is stayed.
Source: InGame
April 2, 2026
Other development
The United States and the CFTC sued Arizona in federal court, arguing the Commodity Exchange Act preempts state enforcement against CFTC-registered exchanges.
Source: Action Network prediction market lawsuit tracker
March 17, 2026
Criminal charges
The attorney general filed a 20-count misdemeanor criminal information in Maricopa County Superior Court against KalshiEX LLC and Kalshi Trading LLC, covering sports and election contracts.
Source: SBC Americas
March 2026
Operator lawsuit
Kalshi sued Arizona gaming officials and the attorney general in federal court (KalshiEX LLC v. Johnson), arguing federal law preempts state gambling law.
Source: SBC Americas
May 21, 2025
Cease-and-desist
The Arizona Department of Gaming sent KalshiEX and its CEO a cease-and-desist letter saying Kalshi was accepting unlawful wagers.
Source: Kalshi/CFTC motion for TRO and PI, D. Ariz. CV-26-01715 (ECF 49)

All 15 actions in Arizona

Court cases

Commodity Futures Trading Commission v. JohnsonU.S. Court of Appeals for the Ninth Circuit, 26-4281Pending
KalshiEX, LLC v. JohnsonU.S. Court of Appeals for the Ninth Circuit, 26-2978Pending
United States v. State of ArizonaU.S. District Court for the District of Arizona, 2:26-cv-02246Injunction granted
State of Arizona v. Kalshi (criminal prosecution)Arizona state court (not identified in sources reviewed)Charged
KalshiEX LLC v. JohnsonU.S. District Court for the District of Arizona, 2:26-cv-01715On appeal

The legal backdrop in Arizona

State status: In litigationThe state and a prediction market operator are actively in court, and no order blocking the operator is in force.
Online sports betting: Legal onlineMobile and retail sports betting is legal and regulated by the Arizona Department of Gaming.
Federal appeals court: Ninth CircuitRuled for the states.
Who regulates: Arizona Department of Gaming; Arizona Attorney General's Office
Laws and bills: None specific to prediction markets

Using Kalshi in Arizona

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 Arizona

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 PredictionsSports blocked
FanDuel PredictsSports blocked
UnderdogNot offered
PrizePicksNot offered
Fanatics MarketsNot offered

Questions people ask

Is Kalshi legal in Arizona?: 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 Arizona as of Oct. 22, 2026. Arizona has 11 public actions on record that name Kalshi. The latest (Sept. 14, 2026): Arizona moved in the Ninth Circuit to summarily vacate the injunction as to sports-event contracts and remand the election-contract issues; no ruling had been reported. This summarises public actions; it is not legal advice.
Has Arizona sued Kalshi or ordered it to stop?: Yes. July 21, 2026: The Ninth Circuit stayed Arizona's appeal of the injunction (No. 26-4281), in which Kalshi and Crypto.com's exchange (NADEX) are appellees or intervenors, until it decided the related Nevada appeals. May 5, 2026: The court granted the federal government a preliminary injunction barring Arizona's criminal and civil enforcement of its gambling and election-betting laws against event contracts on CFTC-registered exchanges. April 10, 2026: Judge Michael Liburdi issued a temporary restraining order halting Arizona's enforcement against Kalshi; the scheduled arraignment was called off. April 8, 2026: Judge Liburdi denied Kalshi's own motion for a TRO and preliminary injunction, relying mainly on the Anti-Injunction Act; Kalshi appealed in May (9th Cir. No. 26-2978), and that appeal is stayed. March 17, 2026: The attorney general filed a 20-count misdemeanor criminal information in Maricopa County Superior Court against KalshiEX LLC and Kalshi Trading LLC, covering sports and election contracts. May 21, 2025: The Arizona Department of Gaming sent KalshiEX and its CEO a cease-and-desist letter saying Kalshi was accepting unlawful wagers.
How old do you have to be to use Kalshi in Arizona?: 18. That is Kalshi's minimum age, and it lists no different rule for Arizona.
Is sports betting legal in Arizona?: Legal online. Mobile and retail sports betting is legal and regulated by the Arizona Department of Gaming.
Which court will decide whether Arizona can regulate Kalshi?: Federal appeals from Arizona 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.