Best Maine Sports Betting Bonuses and Promo Codes for September 2025
Maine sportsbook promo codes
Caesars Sportsbook will play a prominent role in the online sports betting space. Caesars has inked deals with three of Maine’s four tribes.
Lastly, the Passamaquoddy Tribe struck an agreement with DraftKings Sportsbook to become the state's final operator to secure a license.
| Maine sports betting site | Welcome bonus | Promo code |
|---|---|---|
| ✨ Caesars Sportsbook | Best sportsbook rewards program |
Learn more below |
| ✨ DraftKings | Best for grading winners |
Learn more below |
Maine sportsbook promos summary
| Betting sites | 2 |
| Best welcome bonus | ⭐Caesars⭐ |
| Last verified | Sept. 17, 2025 ✅ |
| Online betting | Yes ✅ |
| Retail betting | Coming ✅ |
| Betting on college sports | Limited ✅ |
| Remote registration | Yes ✅ |
| Online casinos | No |
| Legal betting age | 21 |
1. Caesars Maine welcome offer
Best Sportsbook Rewards Program
Caesars made its mark on Maine sports wagering when it announced partnerships with the Maliseet, Mi'kmaq, and Penobscot tribes of the Wabanaki Nations.
Caesars Maine will now look to corner the state's sports betting market with its welcome bonus, which requires a Caesars Sportsbook promo code to claim.
Read our in-depth Caesars Sportsbook review to learn more about Caesars’ bonuses, banking options, and top features.
2. DraftKings Maine welcome offer
Best Sports Betting App
DraftKings, one of the leading betting apps and our pick for the best Maine sports betting app, provides new bettors with the most lucrative bonus available, and no DraftKings promo code is required either.
Catch up on the betting site's best features and Maine promos through our DraftKings review.
Latest Maine betting news
Most common Maine sign-up bonuses
Here are the three most common sportsbook sign-up bonuses Maine sports bettors can expect from betting sites in 2025.
Second chance bet
With a second chance bet, you’re given two shots at betting glory. Online sportsbooks will insure your first wager up to a specified amount, returning the full stake as bonus bets if you lose. Second chance bets typically range between $100 and $1,000, though some operators have been known to offer up to $5,000 during new state launches and major sporting events.
For example, if Caesars offers a $1,000 Maine sportsbook bonus, you could place a $1,000 wager on the New England Patriots and receive the entire amount back as bonus funds if you lose. Caesars awards its bonus as a single $1,000 bonus bet token, but some other sportsbooks allow you to break it into smaller bets.
'Bet and get' bonuses
A bonus that’s been gaining traction in 2025, the 'bet and get' offer involves new sportsbook users placing a small, initial wager. In return, an online sportsbook will award bonus bets. Typically, sportsbooks will award this bonus regardless of the outcome of your first bet. So, win or lose, you are guaranteed a set amount of bonus bets.
Consider the typical 'bet $5, get $200' offer. After registering and making an eligible deposit, you can place a $5 bet. Following bet placement, the sportsbook will add $200 in bonus bets to your account.
No deposit bonus
Typically reserved for state launches and major events on the sporting calendar, no-deposit bonuses are self-explanatory.
As a new user in a recent legal state, you will receive a specified amount of bonus bets after you create a new sportsbook account. Predictably, you will not need to make a deposit to claim this bonus and will have access to the full amount when the sportsbook begins accepting wagers.
Existing sportsbook users may be able to opt in and claim no-deposit bonuses during March Madness, the days leading up to the Super Bowl, or any time a sportsbook decides to reward its loyal customer base.
More Maine betting resources
Maine sportsbook promos FAQ
Caesars Sportsbook and DraftKings Sportsbook each went live on Nov. 3, 2023, the first day of legal betting in Maine.
Caesars holds the edge over DraftKings, but the latter could have the best Maine sports betting promo code when all is said and done, based on our experience evaluating welcome bonuses in other legal states.
You can claim at least two sign-up bonuses — one from Caesars Sportsbook and another from DraftKings Sportsbook.
Bonus abuse occurs when the same user attempts to claim multiple new-user bonuses by creating more than one account with the same sportsbook.
Legal Maine sports betting is reserved for bettors 21 and older.
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