Prediction Markets
in Arizona
Arizona is mostly open for prediction markets, with one caveat: Polymarket QCEX is currently restricted for Arizona residents while state litigation is pending. All other CFTC-regulated platforms (Kalshi, Robinhood, and PredictIt) are fully available. Sports betting launched in September 2021, and Arizona has the lowest flat income tax rate in the country at 2.5%. Prediction market winnings are taxed at that same 2.5% rate: a significant advantage for active traders compared to states like California (13.3%) or New York (10.9%).
Federal court blocked AG Kris Mayes from prosecuting Kalshi.
After Arizona AG Kris Mayes filed 20 misdemeanor counts against Kalshi in March 2026 over election and sports contracts, the CFTC sued the state in federal court. On May 5, US District Judge Michael Liburdi granted a preliminary injunction barring further enforcement, finding three independent grounds for federal preemption (field, conflict, and impossibility). Arizona is now the first state where the CFTC has won this argument, and the ruling is being cited in the agency's parallel suits against Minnesota, Illinois, Connecticut, and New York.
Read full coverage → Litigation scoreboard →Which platforms work in Arizona?
All categories available in Arizona: sports, economics, politics, weather, and crypto. No state-level restrictions. Kalshi weather markets including Phoenix heat records are particularly relevant for AZ traders.
Polymarket QCEX is restricted for Arizona residents while state litigation is pending. CFTC-licensed Kalshi, Robinhood, PredictIt, and Manifold all remain available.
Both Mana play-money and Sweepcash real-prize features available in Arizona.
CFTC no-action exemption. US politics-only, $850 per contract cap. Available in Arizona.
All prediction market contracts available: sports, economics, and political event contracts fully accessible in AZ.
AZ sports betting launched 2021 — prediction markets coexist
Arizona launched mobile sports betting in September 2021, just weeks after the state signed HB 2772. The market launched with 17 licensed operators: one of the largest opening-day rollouts of any US state. Arizona's sports culture (Suns, Cardinals, Diamondbacks, Coyotes, Arizona State, University of Arizona) drove rapid adoption, making AZ one of the top 10 sports betting states by handle within its first year.
CFTC-regulated prediction markets operate alongside Arizona's licensed sportsbooks without conflict. The Arizona Department of Gaming oversees sports betting; Kalshi's prediction market contracts fall under CFTC federal jurisdiction: separate regulatory lanes that have coexisted without state-level friction in Arizona.
AZ sports traders have full flexibility: FanDuel/DraftKings/BetMGM for spreads, props, and parlays (AZ-licensed sportsbooks); Kalshi for binary outcome contracts, economics, and political markets. No regulatory friction between the two frameworks in Arizona.
Arizona's 2.5% flat tax — the prediction market trader advantage
Arizona reduced its top income tax rate to 2.5% in 2023: the lowest flat income tax rate of any US state that has a state income tax. Prediction market winnings are ordinary income taxed at this rate.
On $10,000 of prediction market profit, an Arizona trader pays $250 in state taxes vs $1,330 in California (13.3%), $1,090 in New York (10.9%), or $499 in North Carolina (4.75%). A meaningful advantage for active prediction market traders.
State tax comparison: $10,000 prediction market profit
Kalshi issues a 1099-MISC for net profits. Report prediction market income on your AZ state return (Form 140) as ordinary income. Sports betting losses (FanDuel/DraftKings) are subject to the 2026 OBBBA 90% deductibility cap; Kalshi prediction market losses are not (they're commodity derivatives, not sports wagers).
Phoenix heat records: a unique angle for Arizona traders
Kalshi operates city-level temperature prediction markets, including Phoenix, which regularly sets national heat records. Arizona traders have a natural information advantage on local weather conditions, seasonal patterns, and heat wave timing that traders in other regions may not have.
- Will Phoenix hit 110°F+ this summer?
- Days above 105°F threshold contracts
- Monsoon season timing markets
- Record high temperature for the month
Local knowledge of Phoenix heat patterns, monsoon season dynamics, and valley geography creates genuine forecasting edge on Kalshi weather contracts: the same kind of edge that drives prediction market efficiency.
How Arizona compares
Nevada
Caution status: Nevada Gaming Control Board has flagged prediction markets. Kalshi sports contracts blocked in NV. Unlike AZ, Nevada has active regulatory risk.
Comparable open stateColorado
Open status, sports betting legal since 2020, all platforms available. Similar open status to AZ but higher flat tax rate at 4.4%.
Southeast contrastGeorgia
Open status with sports betting still illegal, but Kalshi sports contracts accessible under CFTC preemption. Different regulatory landscape from AZ.