MT · Polymarket US · Checked Oct. 21, 2026
Is Polymarket US legal in Montana?
The short answer
Polymarket US does not publish a list of states where it is unavailable, and we found no court order, regulator action or Polymarket US notice that stops it from serving Montana as of Oct. 22, 2026.
Montana has not named Polymarket US in a public action we have found, but it has acted against other prediction markets (enforcement, no lawsuit).
Federal appeals from Montana go to the Ninth Circuit, which ruled for the states on Aug. 28, 2026.
Availability: Polymarket App Terms & Conditions (ISV Front End), effective October 22, 2026 (embedded at polymarket.us/tos), checked Oct. 22, 2026. A summary of public actions, not legal advice.
Cite this page
Bluebook
Is Polymarket US Legal in Montana?, Prediction Market Laws (last updated Oct. 22, 2026), https://predictionmarketlaws.com/platforms/polymarket/montana.
APA
Prediction Market Laws. (2026, October 22). Is Polymarket US Legal in Montana?. https://predictionmarketlaws.com/platforms/polymarket/montana
What Montana has done about Polymarket US
No public action by Montana names Polymarket US. Montana has taken 6 other actions on prediction markets: see prediction market law in Montana.
Court cases
We track no case between Polymarket US and Montana.
The legal backdrop in Montana
- State status
- Enforcement, no lawsuitState officials have sent cease-and-desist letters or taken other enforcement steps, but we found no active litigation.
- Online sports betting
- Retail onlyLottery-run sports betting; the app works only at authorized licensed locations.
- Federal appeals court
- Ninth CircuitRuled for the states.
- Who regulates
- Montana Lottery (Sports Bet Montana); Montana DOJ Gambling Control Division; Montana Attorney General
- Laws and bills
- None specific to prediction markets
Using Polymarket US in Montana
- Minimum age
- 18
- Identity checks
- Polymarket US requires date of birth, a phone number confirmed by text code, legal name, residential address and Social Security number. Most users are verified automatically; others may be asked for a government-issued ID and a selfie check. KYC must be completed before depositing or trading, and the terms require KYC, AML and sanctions screening. Source
Other platforms in Montana
- 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 PredictsOffered
- UnderdogOffered
- PrizePicksOffered
- Fanatics MarketsNot offered
Questions people ask
- Is Polymarket US legal in Montana?
- Polymarket US does not publish a list of states where it is unavailable, and we found no court order, regulator action or Polymarket US notice that stops it from serving Montana as of Oct. 22, 2026. Montana has not named Polymarket US in a public action we have found, but it has acted against other prediction markets (enforcement, no lawsuit). This summarises public actions; it is not legal advice.
- Has Montana sued Polymarket US or ordered it to stop?
- Not that we have found. We have no cease-and-desist letter, state lawsuit, court order or settlement in Montana that names Polymarket US, as of Oct. 21, 2026.
- How old do you have to be to use Polymarket US in Montana?
- 18. That is Polymarket US's minimum age, and it lists no different rule for Montana.
- Is sports betting legal in Montana?
- Retail only. Lottery-run sports betting; the app works only at authorized licensed locations.
- Which court will decide whether Montana can regulate Polymarket US?
- Federal appeals from Montana 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.