Maine Sports Betting Promos & Bonuses: Best Offers for Sept. 2026

Maine has officially launched legal online sports betting, with the big kickoff coming on Nov. 3, 2023. According to the legislation, Maine sports betting can welcome up to four online sportsbooks, one for each native tribal group. Only two have launched so far: Caesars and DraftKings. These platforms bring their standard bonuses and promos to the state.
This page is your go-to source for all the latest ME sportsbook promos. We'll explain all the best bonuses and give you a heads-up on other potential deals. Plus, you'll get insights into how we weigh different sportsbook promos and some extra resources to keep you ahead of the game.
#1 RATED
Trade $25, Get $35 in Bonus Funds

Certain limitations apply. The offer is available to new users only, subject to the terms and conditions specified by Kalshi. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.

Features
  • Low minimum deposit
  • Legal sports trading in most states
  • Exclusive welcome offer
Claim $35
Terms and conditions:
  • All states + DC (excluding Nevada and Washington).
  • Must be 18+
  • Create and verify your Kalshi account.
  • Deposit at least $10 or more.
  • Trade $25+ worth of event contracts with seven days of registering.
  • Receive $35 in bonus funds.
  • Bonus funds cannot be cashed out, must be used to make additional trades.
Features
#2
Deposit $10, Get $50 Trading Bonus

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading involves high risk and may result in loss of your entire investment. See polymarket.us/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated derivatives exchange and clearing organization.

Features
  • Fast withdrawals
  • Sports trading available
  • Good mix of markets
Claim $50
Terms and conditions:
  • All states + DC, must be 18+.
  • Create and verify your Polymarket account.
  • Deposit $10 or more and receive $50 in bonus funds.
  • Bonus funds cannot be cashed out, must be used to make additional trades.
Features
#3
Deposit $10, Get $25 in Trade Credits

Terms and conditions apply.

Features
  • Responsive mobile app
  • Peer to peer trading
  • CFTC approved
Claim $25
Terms and conditions:
  • 21+; new Novig users only.
  • Use the Novig promo code SBRBONUS to qualify.
  • Make a first deposit of $10 or more.
  • Collect $25 in Trade Credits.
  • Some market and pricing restrictions apply to Trade Credits.
  • Trade Credits cannot be applied partially or used on Make Orders.
Features
#4
Trade $50, Get $75

Terms and conditions apply.

Features
  • New prediction market
  • First trade bonus
  • Now available nationwide (excl. NV)
Claim $75
Terms and conditions:
  • 18+; new users only.
  • Use the ProphetX promo code SBR to qualify.
  • Make $50 or more worth of trades within 30 days.
  • Collect $75 in bonus funds (three $25 increments).
  • Unused bonus funds expire 45 days after receipt.
  • Bonus funds can only be used to make additional trades and cannot be withdrawn as cash.
Features
#5
50% First Deposit Match, up to $1,000

Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply.  Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit http://www.ncpgambling.org . NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369) 

Features
  • Quick withdrawals
  • Customer support 24/7
  • Excellent mobile app
Claim $1,000
Terms and conditions:
  • Sign up as a new Underdog customer with the promo code SBRBONUS.
  • Get your first deposit matched 50%, up to $1,000 in bonus funds.
  • Min. deposit is $10.
  • Must be 18+ (21+ in select states).
  • This promotional offer is ongoing.
  • Bonus funds cannot be cashed out directly; must be used to make additional predictions.
  • In CT, HI, ID, IA, LA, ME, MT, WA only: Max. 25% deposit match, up to $250.
Features
#6
Trade $5, Get $100 in Predicts Bonuses

Terms and conditions apply; select states only. 

Features
  • Live in all 50 states + DC
  • New Prediction Market
  • Low-risk bonus
Terms and conditions
  • 18+; new customers only.
  • Bonus available in 18 states ((AK, AL, CA, DE, FL, GA, HI, ID, MN, ND, NE, NM, OK, RI, SC, SD, TX, or UT)
  • Must deposit $5 or more.
  • Must make a $1+ trade every day, for five straight days.
  • Collect $20 in Prediction Bonus Funds each day.
  • Bonus funds cannot be withdrawn as cash.
  • Bonus funds expire 24 hours after receipt
Features
#7
Up to $100 Trade Match

Terms and conditions apply. 

Features
  • Top rewards
  • Great Bonuses
  • Referral Options
Terms and condtions
  • New Gemini customers only.
  • 50% first trade match up to $100 in Predict Cash.
  • Predict Cash cannot be withdrawn or transferred. Must be used to make trades.
  • 18+ in most states; terms and conditions apply.
Features
#8
Trade $10, Get $10

Campaign period: Extended. The promotion expires seven days after account verification, and only events settled within this seven-day window are eligible. Each qualifying trade must be worth at least $10 and have a probability below 80%. Trades at or above 80% probability will not count. Trades are counted only after they have settled, and trades placed using rewards are not eligible.

Features
  • Prediction market
  • Sports trading available
  • Margin trading available
Terms and conditions:
  • Campaign Period: Extended
  • The promotion expires 7 days after account verification. Only events settled within this 7-day window are eligible.
  • Each qualifying trade must be worth at least $10.
  • Only trades with probabilities below 80% qualify.
  • Trades at or above 80% probability will not be counted.
  • Trades are only counted once they have settled.
  • Trades placed using rewards will not be counted.
Features
#9
Trade $10, Get $20

Trading in futures involves the risk of loss and is not suitable for every investor.

Features
  • CFTC Registered
  • 33+ million users
  • Award winning app
Claim $20
Plus500 Terms and Conditions
  • 18+ (21+ where required); new users only.
  • Use the Plus500 promo code SBRBONUS.
  • Make a first trade of $10 or more.
  • Receive $20 in Bonus Funds.
  • Bonus funds cannot be cashed out directly or transferred.
Features
#10
$50 Sign Up Bonus

Terms and conditions apply.

Features
  • Supports more than 250 cryptocurrencies
  • Secure trading platform
  • Predict sports, politics, pop culture
Crypto.com Review

Crypto.com is a trusted cryptocurrency exchange and an emerging prediction market platform that offers event contracts on sports, elections, economics, and pop culture. Use fiat cash or crypto to make trades and get paid in real time. 

Features
#11
Spend $10, Get $50

Terms and conditions apply. 

Features
  • New prediction market
  • Great mobile app
  • Variety of sports markets
Claim $50
Terms and conditions:
  • Spend $10, Get $50 in Bonuses
  • Full prediction market now live in nine states
Features

21+ only. Please Gamble responsibly. Gambling problem? CALL 1-800-GAMBLER or 1-800-MY-RESET (Available in the US).

Book logo
Trade $25, Get $35 in Bonus Funds

All Maine sportsbook promo codes and bonuses

Maine's sports betting legislation allows up to four online sportsbooks. The rules stipulate that each of the state's four federally recognized tribes (the Penobscot, Passamaquoddy, Miโ€™Kmak Nation, and Maliseetcan) can partner with one online operator. So, each tribe can roll out a single online betting operator.

Interestingly, three of the tribes have partnered with Caesars Sportsbook. The Passamaquoddy ended up partnering with DraftKings just days before legal sports betting launched.

What does this mean for Maine sports betting? We are currently looking at a Caesars and DraftKings duopoly. Industry big boys like FanDuel, BetMGM, and BetRivers may still vie for a spot. If they do try, they will have to flip one of the three tribes who have already chosen Caesars or attempt to replace DraftKings entirely. 

Representatives of the Sports Betting Alliance, which boasts names like FanDuel, DraftKings, and Fanatics, hinted in June 2023 that they might skip Maine altogether. They suggested that the costs of licensing and revenue sharing would outweigh the benefits. However, with the market's potential, it's hard to imagine them ignoring it entirely. Obviously, DraftKings eventually shifted its position and entered the Maine market on Day One.

The final confirmation for Maine sportsbooks revealed only Caesars and DraftKings opening their virtual doors to customers. 

*Confirmed to have already partnered with a Maine tribe for legal online sports betting.

Betting Site ๐Ÿ† Welcome Bonus โญ Promo Code โœ…
Kalshi logo Kalshi
Trade $25, Get $35 in Bonus Funds Certain limitations apply. The offer is available to new users only, subject to the terms and conditions specified by Kalshi. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
Polymarket logo Polymarket
Deposit $10, Get $50 Trading Bonus 18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading involves high risk and may result in loss of your entire investment. See polymarket.us/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated derivatives exchange and clearing organization.
NoVig logo NoVig
Deposit $10, Get $25 in Trade Credits Terms and conditions apply.
ProphetX logo ProphetX
Trade $50, Get $75 Terms and conditions apply.
Underdog logo Underdog
50% First Deposit Match, up to $1,000 Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply.  Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit http://www.ncpgambling.org . NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369) 

DraftKings Maine welcome offer 👑

DraftKings is one of just two sportsbooks available in Maine. It brings a spend $5, get $150 in Bonus Bets (paid within 14 days) offer. You won't need a DraftKings promo code to activate this offer.

Additionally, new users can claim a 20% deposit bonus, up to $1,000.

DraftKings is regularly considered one of the best sportsbooks in the country, so Maine users can count themselves lucky to have it as an option. It boasts a premier mobile app, competitive betting odds and markets, and frequent ongoing promotions for existing users. 

For a more comprehensive rundown on their welcome bonus, other promotions, and features, check out our DraftKings sportsbook review.  

GAMBLING PROBLEM? CALL 1-800-GAMBLER or 1-800-MY-RESET, (800) 327-5050 or visit http://gamblinghelplinema.org (MA). 

Please Gamble Responsibly. 888-789-7777/visit http://ccpg.org (CT), or visit http://www.mdgamblinghelp.org (MD), 1-800-981-0023 (PR).

21+ and present in most states. (18+ DC/NH/PR/WY). Void in CAN. Eligibility restrictions apply. On behalf of Boot Hill Casino (KS). Pass-thru of per wager tax may apply in IL. 1 per new DraftKings customer. $5+ first-time bet req. Max. $150 issued as non-withdrawable Bonus Bets. Stake removed from payout. Reward issued as $50 in Bonus Bets every 7 days via click-to-claim for 14 days. Bonus Bets and click-to-claims expire 7 days (168hrs) after issuance. Terms: http://sportsbook.draftkings.com/promos . Ends 10/18/26 at 11:59 PM ET. Sponsored by DK.


Caesars Maine welcome offer 🏛

Caesars is the only other legal online sportsbook to launch in Maine. Its welcome offer is different from DraftKings' and is one of the most unique in the nation. The sportsbook is offering new users a bet $1, and get ten 100% Profit Boost Tokens just for placing a wager of $1. New users must use promo code GODYW to be eligible for the promo. A minimum deposit of $10 is required, and the Profit Boosts expire 14 days after receipt.

Caesars does occasionally switch up its deal. If it decides to change its Maine sign-up bonus, we'll let you know. In the meantime, you should check out our detailed Caesars review or our Caesars Sportsbook promo code page to learn more about this new Maine sportsbook.

Maine sports betting promos summary

๐Ÿš€ ME apps launch date Nov. 3, 2023
โžก๏ธ Legal betting age 21+
 โ–ถ๏ธ Sports betting apps 2 (Up to four allowed)
๐Ÿ’ฐ  Best ME bonus DraftKings - Spend $5, Get $150 in Bonus Bets
โ”  Do ME promos require codes? Sometimes
โ”  Can you withdraw bonus funds? Only after 1x playthrough
๐Ÿ–ฅ๏ธ Remote registration Yes
๐Ÿ“ฑ  Online sports betting Yes
๐ŸŽฐ Retail sports betting Yes
๐ŸŽฐ Online casinos No
๐Ÿƒ  Online poker No
๐ŸŽฎ eSports betting No
๐Ÿ† Daily fantasy sports Yes
โ„น๏ธ Gambling addiction counseling Yes
โ˜Ž๏ธ Problem gambling hotline 1-800-GAMBLER
๐Ÿ”” Maine Regulator Maine Gambling Control Unit

How we rate and review sports betting promotions

Evaluating sportsbook welcome promotions isn't the same as rating the books themselves. It demands a much more nuanced approach. Some promotions are often designed to look more appealing than they are, so it takes a seasoned hand to sift through the fine print and discern the actual value of each offer. 

Some bonuses are barely distinguishable from one another at face value. It's tempting, and indeed mostly advisable, to claim as many as possible. Even still, knowing which Maine sportsbook promos have the most actual value is also an important factor. 

Here's how we break it down:

True value over sheer size

The biggest bonus isn't necessarily the best. We dig deeper to understand the genuine potential of a promotion. For example, a hefty bonus with restrictive conditions might not hold up against a moderate, flexible one.

Validity period

A bonus's validity period can affect your betting strategy. For instance, a seven-day window might limit you to betting on a single week of NFL games, whereas a 14-day period offers you the flexibility to bet over two weekends. We weigh in on these timelines for better planning.

Minimum deposit or qualifying wager 

We evaluate the initial financial commitment needed to unlock a bonus. Whether it's a minimum deposit or a specified wager amount, this factor can determine the accessibility of a bonus for different types of bettors.

Odds limitations 

Some bonuses may restrict the odds you can bet on, either too high or too low. We scrutinize these limitations to ensure bettors get a good range of betting options that align with common betting strategies.

Market restrictions

Can the bonus be applied across all sports markets or only specific ones? A versatile bonus, applicable across various sports and events, usually offers better value.

Transparency 

The terms and conditions should be clear and easy to understand. We give higher ratings to promotions with transparent terms that donโ€™t hide behind any confusing jargon.

Types of Maine sports betting sign-up offers and bonuses

Across the nation, sportsbooks typically oscillate between a few primary types of welcome bonuses. While the deposit matching bonus was once prevalent in online sports betting, it has now largely moved to online casinos. That leaves two dominant types of Maine sports betting promos for bettors to tap into:

First bet offer

Essentially, this promo acts as a cushion for your initial bet. For example, you place a first bet for $50 on a Monday Night Football game, and your team doesn't come through. The sportsbook will then give you a bonus bet, often equivalent to your original wager, allowing you a "second chance" to bet and potentially win.

Some of the best March Madness betting promos fall into this category.

Bet and Get

As it says on the label, all you have to do to earn this bonus is make a qualifying bet. The initial wagering requirements are usually small, often just $5 or $10. Win or lose, you'll be credited some bonus bets.

These bonuses are great for a couple of reasons. First, they come with an extremely low initial risk. Second, they allow you to get a feel for the sportsbook as you use the bonus bets over the next week or two. And lastly, they provide you with a great chance to boost your bankroll without depositing more money.

Referral bonus

The promotions don't end once you've claimed a new customer bonus. Many of the best sportsbooks in Maine also offer generous referral bonuses. 

Convince a friend to sign up and deposit using a unique download link, and you'll get a decent chunk of bonus bets or cashback as a thank-you present. You can check out our picks for the best sportsbook referral bonuses.

Latest Maine sports betting news

Legal sports betting has arrived in Maine! The launch happened on November 3, 2023, at 9:00 a.m. local time. 

The state's four indigenous tribes hold the exclusive rights for online wagering. Caesars Sportsbook, in alliance with three Maine tribes, was the first to confirm their launch in the state. DraftKings followed shortly afterward as the second Maine sportsbook. They were the only two operators who launched in Maine on the first day of legal sports betting.

While online platforms are expected to drive the most revenue, the Waterville, Sanford, and Cumberland retail venues will provide a great secondary betting option.

Here's a brief rundown of the latest Maine legal online betting updates:

July 2026

-DraftKings updates its sportsbook welcome bonus in Maine. New users now get $150 in bonus bets (paid out over 14 days) when they make a first bet of $5 or more.

Sports to bet on with Maine bonuses

It will come as no surprise to see a rather extensive list of major professional and amateur sports available to Maine bettors; here are the marquee sports on which they'll be able to wager:

NFL ๐Ÿˆ

Sports in these parts don't get much more marquee than football โ€“ and the sheer number of NFL betting opportunities will make Maine residents dizzy with delight. Every major sports betting site offers hundreds of wagering plays for every regular season and playoff game โ€“ culminating in a veritable buffet (yum!) of betting options for the Super Bowl.

NCAA Football ๐Ÿˆ

It might not have the same prestige as the NFL โ€“ or the number of betting markets, for that matter โ€“ but college football is still one of the most popular sports in North America from a wagering standpoint. Maine bettors have access to a 1-2 punch of basic betting markets (moneyline, spread, and O/U) and various team and other prop plays.

NBA ๐Ÿ€

What do Maine bettors do when the last football pass of the season has been thrown? Pivot to basketball, of course! Based on how enormous the NBA prop markets have become for the majority of major players in the U.S. sports betting space, Maine wagerers have plenty of choice when it comes to the hardcourt, including some of the best NBA betting sites on the market. 

NCAA Basketball ๐Ÿ€

Maine's representation in the Division I men's basketball scene is sparse โ€“ as in, the Maine Black Bears are the only program in the state above Division III. And yet, there's little doubt that bettors from the Pine Tree State will flock in droves to their betting apps once the NCAA hoops season gets rolling โ€“ and in even greater numbers for March Madness, of course. Unfortunately, Maine state law somewhat limits in-state college sports betting.

MLB โšพ

Those summer months can be l-o-n-g โ€“ but only if you aren't a baseball fan. Maine residents who favor America's Pastime are blessed with hundreds of betting markets for every regular-season and playoff game across the Major League Baseball schedule โ€“ and with the emergence of micro-betting, you can even wager on the outcome of an individual pitch.

NHL ๐Ÿ’

Maine's NCAA hockey team has had plenty of success in the America East Conference over the years โ€“ and we like the chances of that puck passion spilling over into the sports betting sphere. NHL betting markets have never been this plentiful, with moneyline, puckline and O/U plays accompanied by an ever-growing selection of team and individual player props.

Golf โ›ณ

There's a lot to like about golf wagering, from the chance to hit a longshot outright play to betting on which players will make or miss the cut, or even if the tournament will feature a hole-in-one. Whether you're a casual observer or golf-obsessed, betting on events can make a good golf viewing experience great โ€“ and a great experience even greater.

Soccer โšฝ

Maine residents might have to dig a little deeper to find them on most U.S.-regulated sports betting apps, but the soccer markets are there. And once they do discover them, they'll be floored โ€“ not only at the number of leagues and competitions covered by most sportsbooks but by the sheer number of betting opportunities attached to the majority of notable matches.

Maine online and mobile sportsbooks

So far, only Caesars and DraftKings have launched in Maine. However, as the situation unfolds, we expect some of these other popular brands and potential sports betting apps to make inroads into the state. Remember, there can be up to four online sportsbooks, and there are currently only two.

Potential ME sportsbook Best known for
BetMGM Bet builders, big welcome bonus
FanDuel Same-game parlays, props depth
BetRivers Micro betting, parlay builders
bet365 Competitive odds, good market variety

Maine betting resources

You're now in the loop about Maine's best bonuses, but there's more to explore. To get a well-rounded view of Maine's sports betting scene, check out these valuable resources:

If you're brand new to sports betting, be sure to browse through some of these guides before you get started:

How to bet on sports How to read odds How to manage your bankroll
New to sports betting? Read our guide on how to get started. Learn how to read sports betting odds in every format. Discover how to manage your bankroll and make smart betting choices.

Sportsbook by category

Responsible sports betting with Maine promos

As sports betting takes center stage in Maine, ensuring responsible play is paramount. Every Maine sportsbook must offer self-imposed deposit and betting limits, including various "time out" durations. 

A portion of sports betting revenue also goes to fund problem gambling services. Several organizations are stepping up to provide resources and assistance for responsible gambling. Here's a snapshot of some key entities and what they bring to the table:

  • Maine Problem Gambling Services: A government-backed initiative, this service emphasizes prevention, intervention, and recovery concerning problem gambling. They offer a helpline, 2-1-1, for immediate assistance and provide resources and training to communities across Maine.
  • Maine Council on Problem Gambling: A dedicated nonprofit, this council collaborates with other organizations to combat problem gambling in Maine. They equip bettors with resources like webinars, in-person training, and self-exclusion tools.
  • National U.S. gambling helpline: 1-800-GAMBLER

Maine sportsbook promos FAQs

Is sports betting legal in Maine?

Yes, sports betting is legal in Maine as of May 2, 2022. The launch of legal online sports betting happened on November 3, 2023, with DraftKings and Caesars opening up in the state.

What’s the best sports betting bonus in Maine?

It's challenging to pinpoint a single best bonus since preferences vary among bettors. The ideal bonus depends on your betting style and things like betting frequency, gambling budget, and the sports you wager on.

It's always a good idea to compare the current sportsbook offers to determine which aligns best with your betting strategy.

Which verified Maine sportsbook promos are the best value?

The "best value" is a subjective term. You might prefer guaranteed bonus bets or a hefty first bet offer deal.

The landscape of promotional offers is ever-changing, so it's vital to keep an eye on the latest offers and compare them periodically. Only Caesars and DraftKings launched in Maine on Nov. 3, 2023, making them the only two options for now.

How old do I need to be to bet on sports in Maine?

You must be 21 or older to sign up with Maine sportsbooks and place a bet.

Do Maine sportsbooks require sports betting promo codes?

No, not all sportsbooks in Maine provide promo codes. Many welcome offers are applied automatically as long as you meet the conditions. Others do require a unique promo code to activate the bonus. 

What are the playthrough requirements on legal online sportsbooks in Maine?

In Maine, most sportsbook bonuses are given as bonus bets. They inherently carry a 1x wagering requirement. When you make a wager with a bonus bet, you can cash out any profit it might earn (minus the original stake amount).

How many sign-up bonuses can I claim in Maine?

The only limit to the number of Maine welcome bonuses you can claim is the state legislative limit of four sportsbooks. Otherwise, you can collect a welcome offer from each sportsbook that launches in the state. Right now, there are only two: Caesars and DraftKings.