Vardan Khachatryan
Polymarket in Arizona
Not available for sports contracts.
- Sports contracts
- Not available
- Other contracts
- Available
- Regulator
- CFTC: offers US trading through Polymarket US (QCX LLC), a CFTC-designated contract market it acquired in 2025
- Rulings and actions in Arizona
- None on record
- Legal sports betting
- Online and retail since 2021
- Arizona action against Polymarket
- None published
- Federal appeals court
- Ninth Circuit: ruled against Kalshi on August 28, 2026
- Last change
- September 14, 2026
Each entry on this page links the ruling or report it rests on. Nothing here is legal advice.
Open Polymarket USWhy Polymarket is legal in Arizona
Polymarket reaches Americans through Polymarket US. It runs on QCX LLC, which the CFTC designated a contract market on July 9, 2025.
That is the same federal status Kalshi relies on. In November 2025, the CFTC also let brokers carry customer accounts on the exchange.
This is a comeback. In January 2022, the CFTC fined Polymarket $1.4 million for offering event contracts without registering.
Polymarket's position is the one Kalshi takes. It says prediction markets are regulated “under a federal framework, not a patchwork of state rules.”
Arizona has not gone after Polymarket in court. Its fight is with Kalshi, and the ruling in that fight protects every CFTC-regulated exchange.
What you can trade on Polymarket from Arizona
Politics, economics, crypto, culture and weather. You must be 18 or over and pass its ID checks.
Sports are the gap. Our records show Polymarket US lists no sports contracts in Arizona, so no Cardinals, Suns or Diamondbacks markets.
Polymarket has not published a state list, and we found no statement explaining the gap. Check the app from Arizona before you fund.
Politics is open, and this year's governor's race is the big local market. Arizona charged Kalshi over that kind of contract: Arizona governor odds.
How Polymarket US works for Arizona traders
Each contract is a yes-or-no question. It pays $1 if the answer is yes and nothing if it is no.
The price reads as a probability. At 60¢, traders put the chance at about 60%.
Take an economics contract at 60¢, since sports are off the menu here. You buy 100 contracts for $60.
Polymarket US charges takers 0.0695 × contracts × price × (1 − price). On this trade that is $1.67, rounded to the cent.
If the answer is yes, you collect $100, a $38.33 profit. If it is no, you are out $61.67.
Resting orders that others fill pay no fee. Our Polymarket fees guide has every rate.
What Arizona has said about Polymarket
Nothing in public, as far as we can find. The Department of Gaming's September 2025 notice named Kalshi, Crypto.com and Robinhood, not Polymarket.
The March 2026 criminal charges name only Kalshi's two companies. The CFTC's April suit against Arizona does not mention Polymarket.
One trade outlet, Yogonet, reported in December 2025 that Arizona had sent Polymarket a cease-and-desist letter. We found no copy.
Arizona's view of the whole industry is clear, though. “Offering or selling event contracts to persons located within Arizona without a license” violates state law, the department says.
The federal injunction that covers Polymarket in Arizona
Polymarket is not a party to Arizona's court fight. It still benefits from the result so far.
On May 5, 2026, Judge Michael Liburdi granted the CFTC an injunction in Phoenix. It bars Arizona from enforcing its gambling laws over contracts on CFTC-regulated exchanges.
Liburdi held that federal law likely “preempts state gambling laws” as applied to derivatives on CFTC-regulated markets. The Ninth Circuit later reasoned the other way.
The order covers “any criminal or civil enforcement actions” and even subpoenas. It names no exchange, so it reaches Polymarket US as much as Kalshi.
Arizona appealed on July 6. After the Ninth Circuit ruled against Kalshi in Nevada's case, Arizona asked to lift the injunction for sports contracts.
The CFTC opposed that on September 24 as premature. The Ninth Circuit has not ruled.
What could change Polymarket's status in Arizona
The first thing is the injunction. If the Ninth Circuit lifts it for sports, Arizona could enforce its gambling laws against any exchange's sports contracts.
That would hit Polymarket less than Kalshi, since Polymarket lists no sports here now. Under Arizona's own proposal, its other contracts would stay covered.
The second is Polymarket itself. It could switch sports on in Arizona, and we would update this page if it did.
The third is the Supreme Court. The circuits are split, and New Jersey has asked the Court to decide. Our litigation tracker follows each case.
Polymarket in Arizona: timeline
Every change to Polymarket's position in Arizona, newest first. Each entry links the record behind it.
How Polymarket compares to sports betting in Arizona
Arizona has legal sports betting, so Polymarket's gap is easy to fill. Sportsbooks here have taken bets online and in person since 2021.
The Department of Gaming licenses them: up to 10 pro teams and event hosts and up to 10 tribes. Bettors must be 21.
Those books pay the state 8% of retail and 10% of mobile revenue, $42.7 million in 2024. Polymarket US pays no Arizona fee.
So an Arizonan who wants a Cardinals position has licensed options. Polymarket's pitch here is everything else, from elections to the economy.
The oversight differs. Sportsbooks answer to the state. Polymarket US answers to the CFTC, and the state says that is not enough.
Other prediction market apps in Arizona
Polymarket is not alone. Eight of the 15 apps we rank list no sports contracts in Arizona. Kalshi and five others do.
Here is where each app we rank stands in Arizona. For the full picture, see prediction markets in Arizona and whether Kalshi is legal in Arizona.
| App | Status in Arizona | More |
|---|---|---|
| Kalshi | Contested for sports and election contracts, with no restriction in force | Is Kalshi legal in Arizona? |
| Gemini Predictions | Available, sports included | Gemini Predictions review |
| OG | Not available | OG review |
| Interactive Brokers | Available; it lists no sports contracts anywhere | Interactive Brokers review |
| Robinhood | Available, sports included | Robinhood review |
| ProphetX | Available, sports included | ProphetX review |
| Coinbase | Available, sports included | Coinbase review |
| Webull | Available, sports included | Webull review |
| Novig | Not available | Novig review |
| DraftKings Predictions | Available, but not for sports contracts | DraftKings Predictions review |
| Fanatics Markets | Not available | Fanatics Markets review |
| FanDuel Predicts | Available, but not for sports contracts | FanDuel Predicts review |
| PrizePicks | Not available | PrizePicks review |
| Underdog Predict | Not available | Underdog Predict review |
How to use Polymarket in Arizona
Download the Polymarket US app and sign in with Google or Apple. It checks your name, date of birth and address, and may ask for ID.
Fund it by debit card, bank transfer or wire. Wires have a $1,000 minimum, and withdrawals go back the way the money came.
Arizona taxes income at a flat 2.5%, and trading profits count. Federal tax applies too.
Before you fund it, read our Polymarket review and our Kalshi vs Polymarket comparison.