Best College Basketball Betting Promo Codes & Bonuses For 2025

The 2025 NCAA Tournament national championship game is set between the Houston Cougars and Florida Gators. This week's top college basketball promo codes are highlighted by a Bet $1, Double Your Winnings on Next 10 Wagers from Caesars Sportsbook, up to $1,500 in bonus bets offer from BetMGM, and more. TheLines covers some of the top college basketball promos from the best betting sites below.

You can claim college basketball bonus offers from Bet365, FanDuel, BetRivers, and more below.

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Sportsbook

Bonus

Features

Bet

1

Up To $1500 in Bonus Bets Paid Back if your First Bet Does Not Win

• Wide coverage of US and international sports
• Linked to MGM Rewards loyalty program
• Regular odds boosts and promos

Bet Now BetMGM Review

Gambling problem? Call 1-800-GAMBLER or 1-800-MY-RESET (Available in the US) 877-8-HOPENY or text HOPENY (467369) (NY) 1-800-327-5050 (MA), 1-800-BETS-OFF (IA), 1-800-981-0023 (PR). 21+ only. Please Gamble Responsibly. See BetMGM.com for Terms. First Bet Offer for new customers only (if applicable). Subject to eligibility requirements. Bonus bets are non-withdrawable. In partnership with Kansas Crossing Casino and Hotel. Promotional offers not available in Mississippi, Massachusetts, New York, Ontario, or Puerto Rico.

2

New DraftKings Customer: SPEND $5, GET $200 IN BONUSES

• Wide coverage of US and international sports
• High-quality iOS and Android apps
• Very fast withdrawal times

Bet Now DraftKings Review

To be eligible for DraftKings Sportsbook and the Promotion, you must be physically located in AR, AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA (select parishes), MA, MD, ME, MI, MO, NC, NJ, NH, NY, OH, OR, PA, PR (residents only), TN, VA, VT, WY, WV, CA-ONT or CA-AB (each an “Eligible Jurisdiction” or, collectively, the “Eligible Jurisdictions”). Must be 21+ years of age or older (18+ if in DC/NH/PR/WY/CA-AB) (19+ in CA-ONT). GAMBLING PROBLEM? CALL 1-800-GAMBLER or 1-800-MY-RESET, (800) 327-5050 or visit gamblinghelplinema.org (MA) Please Gamble Responsibly. 888-789-7777/visit ccpg.org (CT), or visit 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. $200 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 21 days. Bonus Bets and click-to-claims expire 7 days (168hrs) after issuance. Terms: Promos | DraftKings Sportsbook . Ends 9/20/26 at 11:59 PM ET. Sponsored by DK.

3

Bet $5, Get $100 in Bonus Bets

• Only sportsbook legal in Florida
• Hot Bets feature
• Live NFL streaming

Bet Now Hard Rock Bet Review

Payable in Bonus Bet(s). Not a Cash Offer. Offered by the Seminole Tribe of Florida in FL. Offered by Seminole Hard Rock Digital, LLC, in all other states. Must be 21+ and physically present in AZ, CO, FL, IL, IN, MI, NJ, OH, TN or VA to play. Terms and conditions apply. Concerned about gambling? In FL, call 1-833-PLAYWISE. In IN, if you or someone you know has a gambling problem and wants help, call 1-800-9-WITH-IT. In AZ, OH, & VA call 1-800-MY-RESET. GAMBLING PROBLEM? CALL 1-800-GAMBLER (CO, IL, MI, NJ, TN)

4

New Users – Get $350 in Bonus Bets when you wager $5 for 7 days

Bet Now FanDuel Review

Gambling Problem? Call 1-800-GAMBLER or 1-800-MY-RESET. Call 1-888-789-7777 or visit ccpg.org/chat (CT). Hope is here. GamblingHelpLineMA.org or call (800) 327-5050 for 24/7 support (MA). Visit www.mdgamblinghelp.org (MD). Call 1-877-8HOPE-NY or text HOPENY (467369) (NY). 21+ (18+ D.C., KY, WY) and present in select states (for KS, in affiliation with Kansas Star Casino). First online real money wager only. Min $5 wager required for 7 consecutive days.$5 first deposit required. Bonus issued as nonwithdrawable bonus bets which expire 7 days after receipt. Restrictions apply. See terms at sportsbook.fanduel.com. Call 1-877-770-7867 (LA). ™/© 2026 MLB

5

Get Up to $1,000 Matched in FanCash

• Unique FanCash loyalty program
• Variety of bonuses and ongoing promos
• Fast, reliable app with live betting and streaming

Bet Now Fanatics Review

Must be 21+. GAMBLING PROBLEM? CALL 1-800-GAMBLER OR CALL 1-800-MY-RESET, www.mdgamblinghelp.org (MD), (800)-327-5050 or gamblinghelplinema.org (MA), Call (877)8-HOPENY or text HOPENY (467369) (NY), (888) 789-7777 or ccpg.org (CT), morethanagame.nc.gov (NC), 1800gambler.net (WV)

How We Rate College Basketball Promos

The strength of CBB bonuses can vary on a monthly or weekly basis. One week, Caesars Sportsbook might have the best deal, and the next week it might come from DraftKings Sportsbook. Many of the operators offer bonus bets in which the risk is extremely low. In some cases, like with BetRivers and BetMGM, bonus bets only come into play only if your initial wager loses. Others, like FanDuel and bet365, award bonuses even if that Kentucky moneyline or North Carolina point spread bet wins.

Keep in mind, CBB promo codes might change several times during the season. Check back here each week to see what the latest offers are from top sportsbooks.

Some of the criteria we weigh when rating the latest bonuses include:

• Overall bonus value
• Player investment
• Bonus timeframe
• Rollover and playthrough requirements
• Fastest sportsbook payouts

The current bet365 CBB promo code catches our attention because you receive bonus bets no matter how your first bet pans out. You also have to make a very small initial investment of just $1 to secure the promotion, which is a lot lower than other sites.

The cash amount players must invest, and the timeframe before a bonus expires are important factors to consider when ranking a bonus offer. With just a $1 investment, you earn $365 in bonus bets that you can use to wager on CBB futures or even specific game lines. It's a great way to test out what the bet365 app has to offer.

How Do NCAA Basketball Betting Promos Work?

The best sportsbook promos are similar to shopping for the best online discounts and coupons, whether it be for clothing or dining. In the sports betting world, top brands like Caesars Sportsbook, FanDuel Sportsbook, and bet365 all have welcome offers and promotions to entice new customers to give their products a try. When signing up for one of these accounts, simply enter one of the promo codes listed above to take full advantage of the current deals.

In most cases, the welcome offer, which is typically bonus bets, will show up in your account once you enter the promo code, make an initial deposit, and place any required bets. The minimum deposit at most sportsbooks is $10.

If you reside in a state where legal betting has yet to go live, new users can look at DFS sites and free-to-play betting apps for promo codes. Check out these Florida sports betting apps and promos as an example.

Types of CBB Betting Bonuses 

Whether you sign up for one sports betting app or three, there will be no shortage CBB promo codes and bonuses available to new and existing customers. Welcome bonuses tend to be the most generous offers but are only available to new NCAA college basketball bettors.

There are many times when there are terms and conditions associated with promos, especially those posted on a sportsbook's promo page. You might see things like "max bet $25," "final odds of +400 or longer," or a short expiration date. Bettors must follow all the rules to take full advantage of the latest CBB promos available to new and existing customers. Here are some examples of what you might see during the NCAA basketball betting season:

• Odds Boosts – Sportsbooks sometimes get creative wording like with the BetRivers House Specials, but the idea is the same – the sportsbook will offer CBB bettors increased odds on a specific wager.
• Insurance – The sportsbook will refund a losing wager in the form of bonus bets. Opting in is usually required.
• Bet & Get – Receive a bonus bet after meeting certain wagering requirements.
• Profit Boost – Some sports betting apps offer a 25% to 30% boost when placing a bet. Check to see if opt-in is required.

College Basketball Betting Tools and March Madness Odds

TheLines is the place to find a variety of college basketball betting tools that you can put to good use. Besides using the previously mentioned promo codes, which are great, you’ll have the opportunity to do some college basketball line shopping. One of the advantages of registering for an account at more than one sportsbook is you’ll have an opportunity to find the best odds available. 

TheLines gives you the opportunity to compare March Madness odds during the NCAA Tournament.

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College Basketball Betting PROMO CODES FAQ