Montana Sports Betting
Sports betting is legal in Montana, but only through Sports Bet Montana, the sportsbook run by the Montana Lottery. You must be 18 and inside one of about 568 licensed, geofenced locations to place a bet, in person or on the app. Online casinos are not legal. This guide covers Sports Bet Montana, prediction markets, and what each option means for hedged sign-up offers.
Montana Sportsbooks and Prediction Markets
Every sportsbook, prediction market and sweepstakes book that accepts players here, with how each is regulated and whether it limits winning bettors.
ProphetX
BroThrow
Kalshi
NoVigNoVig
Polymarket USStatuses come from our sportsbook records and the regulator's list. Check the regulator before depositing if anything has changed.
Montana Sportsbook Promos
Listed in the order to claim them. The order changes with your starting bankroll.
Approximate value is what each offer converts to when you bet both sides, at the odds available when we checked. Actual returns depend on offer availability, market conditions, and individual execution.
Notes: Signup with promo code "DHO".
Notes: bet105 is an offshore crypto only sportsbook.
Notes: If your first bet on BroThrow loses they will reimburse you up to $10.
Notes: Kalshi is a CFTC regulated prediction market, not a traditional sportsbook.
OzoonNotes: 5x Rollover requirement. Any wagers using deposited funds or bonus funds prior to bonus completion are subject to a max of 50% of deposited amount.
Sportsbetting.agNotes: Verify the promo code for the 50% deposit match is applied before making your first deposit.
Sportsbetting.ag has restrictions on using Free Bets that reduces their value to ~50%. Learn more in our Sportsbetting.ag review.
- Football, Basketball, Soccer & Tennis Free Bets can only be used on spreads and totals to max odds of +150.
- Baseball and Hockey Free Bets can only be used on Moneylines and Totals to max odds of +150.
- Baseball and Hockey Free Bets are restricted to a maximum wager of $500 per event.
- MMA Free Bets can only be used on Moneylines to max odds of -200 for the favorite and +150 for the underdog.
NoVigNotes: Use Promo Code "DHO100" for 100% off your first purchase up to $100 off. Can only choose one of the two NoVig Offers.
NoVigNotes: Use Promo Code "DHO" for 50% off your first purchase of $25. Can only choose one of NoVig's two offers.
BetOnlineNotes: Verify the promo code for the 50% deposit match is applied before making your first deposit.
BetOnline has restrictions on using Free Bets that reduces their value to ~50%. Learn more in our BetOnline review.
- Football, Basketball, Soccer & Tennis Free Bets can only be used on spreads and totals to max odds of +150.
- Baseball and Hockey Free Bets can only be used on Moneylines and Totals to max odds of +150.
- Baseball and Hockey Free Bets are restricted to a maximum wager of $500 per event.
- MMA Free Bets can only be used on Moneylines to max odds of -200 for the favorite and +150 for the underdog.
BetUSNotes: 125% Sign-Up Bonus up to $2,000 on your first, second and third deposits.
- Minimum deposit: $100
- 100% Sports Bonus – up to $2,500
- 14X Rollover on Sports
- 25% Casino Bonus – up to $625
- 30X Rollover on Casino Games for Release and Cash out.
- Max cash out for Casino Bonus is $2,500
- 7-Days Expiry
Lucky RebelNotes: 10x Rollover requirement. Any wagers using deposited funds or bonus funds prior to bonus completion are subject to a max of 50% of deposited amount.
BovadaNotes: The 75% match on a $1,000 deposit is available when using crypto to deposit, and a promo code is required. The rollover is 5x on sports.
MyBookieNotes: 10x rollover requirement on the deposit and bonus results in a total wager requirement of $30,000.
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Notes: Polymarket.com is a prediction market, not a traditional sportsbook.
Notes: Polymarket US is a CFTC regulated prediction market, not a traditional sportsbook.
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Prediction Markets in Montana
Status: contested. Last verified October 2, 2026.
Prediction markets such as Kalshi and Polymarket US are regulated federally by the Commodity Futures Trading Commission. Montana's Gambling Control Division says Kalshi's event contracts are illegal gambling and illegal sports wagering under state law. It sent Kalshi cease-and-desist letters on March 26, 2025, and April 6, 2026. Read the 2025 letter
Kalshi sued Montana officials in federal court in April 2026. On September 17, 2026, both sides asked the court to dismiss the case. Under the stipulation, Montana officials will not enforce against Kalshi until the Ninth Circuit resolves Kalshi's rehearing petition in KalshiEX v. Assad, the Nevada case decided August 28, 2026, and must give 30 days' written notice before acting. Read the stipulation
Montana is in the Ninth Circuit, which ruled for Nevada against Kalshi, so Kalshi's position in Montana may change quickly. Prediction markets matter for matched betting because they do not limit winning traders. Check each app for current availability in Montana before you deposit.
This section is for informational and educational purposes only. It does not constitute legal advice.
Online Casinos in Montana
Online casinos are not legal in Montana. State law says online casinos "constitute internet gambling and therefore are prohibited." Section 23-5-112, MCA
In 2025, Montana also banned sweepstakes casinos that pay out any form of currency, with the law taking effect October 1, 2025. SBC Americas report
Montana Sports Betting Law and Timeline
- 2019: The Legislature passed House Bill 725 (Chapter 284, Laws of 2019), which made sports wagering a lawful activity when run by the state lottery. Session law text, Section 23-7-104, MCA
- March 11, 2020: Sports Bet Montana went live. The Montana Lottery says betting runs on a mobile app and machines in licensed, geofenced locations only. Montana Lottery presentation to the Legislature, KTVH report. Current locations are listed on the Lottery's retailer map.
- March 26, 2025: The Montana Department of Justice Gambling Control Division sent Kalshi a cease-and-desist letter saying its event contracts are illegal gambling and illegal sports wagering in Montana. Cease-and-desist letter
- October 1, 2025: Montana's ban on online and sweepstakes casinos (SB 555) took effect. SBC Americas report, Section 23-5-112, MCA
- April 6, 2026: The Gambling Control Division sent Kalshi a second cease-and-desist letter. Kalshi sued Montana officials in federal court on April 12, 2026 (KalshiEX LLC v. Knudsen). Kalshi complaint
- September 17, 2026: Kalshi and Montana filed a joint stipulation to dismiss the case. Montana officials agreed not to take enforcement action against Kalshi until the Ninth Circuit resolves Kalshi's rehearing petition in KalshiEX v. Assad, and to give 30 days' written notice before any later action. Joint stipulation
Offshore and unlicensed betting
Montana law explicitly targets offshore operators. Section 23-5-162, MCA, says a person who knowingly operates "any type of illegal internet gambling site within the state's borders, including operating an online gambling site in the state through licensed or unlicensed offshore sources," faces felony liability: a fine of up to $50,000, up to 10 years in prison, or both. Advertising for or soliciting people to join an illegal gambling enterprise is also a crime under Section 23-5-154. Section 23-5-162, MCA, Section 23-5-154, MCA
We found no Montana statute that names a separate offence for a bettor who places a wager with an offshore site. The law is general: "Except as specifically authorized by statute, all forms of public gambling, lotteries, and gift enterprises are prohibited," and sports wagering is only lawful through the state lottery. Section 23-5-151, MCA, Section 23-7-104, MCA
This section is for informational and educational purposes only. It does not constitute legal advice. Availability of sportsbooks and promotions varies by state and may change. Verify current offerings before signing up.
Montana Sports Betting FAQ
Is sports betting legal in Montana?
Yes, but only through Sports Bet Montana, run by the Montana Lottery. Bets must be placed at a licensed location, in person or on the app while inside that location.
How old do you have to be to bet on sports in Montana?
You must be 18 or older to place a sports bet in Montana.
Can you bet in Montana if you live in another state?
Montana law only covers wagers placed in Montana, and mobile bets must be made inside a licensed, geofenced location. Residency is not part of that rule, so check Sports Bet Montana's account terms before you sign up.
Is Kalshi legal in Montana?
It is contested. Montana's Gambling Control Division says Kalshi's event contracts are illegal gambling. In September 2026 the state agreed not to enforce against Kalshi until the Ninth Circuit finishes reviewing the Nevada case. Check the Kalshi app for current availability in Montana.
Is online gambling legal in Montana?
Sports betting through Sports Bet Montana is legal at licensed locations. Online casinos are not, and since October 1, 2025, sweepstakes casinos that pay out currency are banned too.
Can you use a credit card at Montana sportsbooks?
No. Montana law says wagers may be bought only with cash, check, or debit card and may not be bought on credit.
Is it legal to use offshore sportsbooks in Montana?
Operating an offshore gambling site in Montana is a felony under Section 23-5-162, MCA. The law does not name a separate offence for bettors, but it bans all public gambling not authorized by statute, and the only authorized sportsbook is Sports Bet Montana.
Before You Start
Nearby State Guides
Sign-up offers only work where you are physically located. If you spend time across a state line, each state's guide lists what you can claim there.
