Not a New User? Best NCAA Tournament Promos for Existing Customers
By Paul Costanzo in Sports Betting News
Published:
- Sports betting apps are rewarding their existing customers during the NCAA Tournaments
- Free-to-play games, bonus bets and profit boosts are among the current user promos
- Opt-in for all these promos to make opening weekend of March Madness as profitable as possible
The best US sports betting apps have stepped up their game when it comes to March Madness betting promos for the Sweet 16. It’s annually one of the biggest betting events of the year, and operators are fighting to bring in new customers that want to take advantage of that.
But what about you, the existing customer? What are you getting for your loyalty to your favorite online sportsbook?
Quite a bit, actually, as NCAA Tournament promos for existing users are plentiful throughout the industry.
Best Sports Betting Promos for March Madness
Before diving into the existing user promos for March Madness, I want to make sure you’ve taken advantage of all the March Madness betting promos for new customers, too. Whether you’re new to betting or want to expand your options, click through the links below to get started.
- BETMGM SPORTSBOOK
USE CODE SBD1500 TO GET UP TO $1,500 PAID BACK IN BONUS BETS
- BET365 SPORTSBOOK
BET $10 & GET $200 IN BONUS BETS WITH CODE SBD365!
- THESCORE BET SPORTSBOOK
USE CODE DIME TO GET 100% BET RESET UP TO $1,000
- DRAFTKINGS SPORTSBOOK
BET $5 & GET $300 IN BONUS BETS IF YOUR BET WINS!
- FANDUEL SPORTSBOOK
BET $5 & GET $250 IN BONUS BETS IF YOUR BET WINS!
- CAESARS SPORTSBOOK
USE CODE SBDDYW & DOUBLE YOUR WINNINGS ON YOUR FIRST 10 WAGERS!
- FANATICS SPORTSBOOK
GET 100% BET MATCH UP TO $100 FOR 10 DAYS
DRAFTKINGS T&Cs: GAMBLING PROBLEM? CALL 1-800-GAMBLER or 1-800-MY-RESET, (800) 327-5050 or visit gamblinghelplinema.org (MA). Call 877-8-HOPENY/text HOPENY (467369) (NY). 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/KY/NH/PR/WY). Void in NH/OR/ONT/PR. Eligibility restrictions apply. On behalf of Boot Hill Casino (KS). Pass-thru of per wager tax may apply in IL. 1 per new DraftKings Sportsbook customer. Must register new account to receive reward Token. Must select Token BEFORE placing min. $5 bet to receive $300 in Bonus Bets if your bet wins. Min. -500 odds req. Token and Bonus Bets are single-use and non-withdrawable. Bet must settle by and Token expires 5/3/26 at 11:59 PM ET. Bonus Bets expire in 7 days (168 hours). Stake removed from payout. Terms: sportsbook.draftkings.com/promos. Ends 4/26/26 at 11:59 PM ET.
BET365 SPORTSBOOK T&Cs: GAMBLING PROBLEM? CALL OR TEXT 1-800-GAMBLER (AZ/CO/IL/IN/KS/KY/LA/MD/MO/NC/NJ/OH/PA/TN/VA) or 1-800-BETS OFF (IA). 21+ only (18+ KY). Must be present in AZ/CO/IA/IL/IN/KS/KY/LA (select parishes)/MD/MO/NC/NJ/OH/PA/TN/VA. Minimum $10 deposit required. Minimum odds -500 of greater. Bonus Bets wager excluded from returns. New customers only. T&CS, time limits and exclusions apply.
BETMGM T&Cs: 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 MS, NY, NV, ON, or PR.
Best NCAA Tournament Promos for Existing Users
Existing user promos during March Madness are often quite different than their daily counterparts. More free games are offered, and the boosts get ramped up as college basketball betting apps know more betting is about to go down.
BetMGM March Matchups Promo
On top of its daily odds boost tokens, ranging from 10-30%, BetMGM is offering a free-to-play March Matchups Pick’Em contest that has $500,000 in bonuses as its prize pool.
Click through the promotion in the rewards section on your BetMGM app, and make picks against the spread during each round. Daily winners will receive a share of the bonus pool.
There’s a maximum of one entry per customer during each round. Bonus bets received expire after seven days after issuance.
Not a BetMGM customer yet? Claim our BetMGM promo code for a First Bet Bonus Up To $1,500 in most states, and Bet $10, Get $150 in Bonus Bets If You Win in Michigan, Pennsylvania, New Jersey and West Virginia.
- BETMGM SPORTSBOOK (MI, NJ, PA, WV ONLY)
USE CODE SBD150 TO BET $10, GET $150 IN BONUS BETS
- BETMGM SPORTSBOOK
USE CODE SBD1500 & GET $1,500 BACK IN BONUS BETS
BETMGM T&Cs: 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 MS, NY, NV, ON, or PR.
bet365 Early Payout Promotion & $16 Safety Net
One of bet365 Sportsbook’s most popular daily promotions is its early payouts for all sports. During March Madness, that early payout can come after the team you placed a pregame moneyline bet on goes up by 15 points!
So Thursday night, could the Arkansas offense blow up early and get out to a 15-point lead against Arizona and payout your moneyline bet before the Wildcats have a chance to claw back?
There is also a First Bet Safety Net offer up to $16 in honor of the Sweet 16. Opt-in and place your bet, and if it loses, get your stake back in bonus bets up to $16.
Existing users at bet365 had the chance to enter a bracket challenge to win up to $10 million if they got every game correct. It is also providing daily odds boosts for the NCAA Tournament, which typically come in at 30% or 50%.
If you’re not yet a customer, you can claim our bet365 promo code for a Bet $10, Get $365 in Bonus Bets Win or Lose welcome offer.
- BET365 (AZ, CO, IN, IA, KY, LA, MD, MO, NC, OH, TN, VA)
BET $10 & GET $200 IN BONUS BETS WITH CODE SBD365
- BET365 ILLINOIS
BET $10 & GET $150 IN BONUS BETS WITH CODE SBD365
- BET365 NEW JERSEY
BET $10 & GET $200 IN BONUS BETS + 50 SPINS WITH CODE SBD365
- BET365 PENNSYLVANIA
BET $10 & GET $200 IN BONUS BETS + 50 SPINS WITH CODE SBD365
BET365 SPORTSBOOK T&Cs: GAMBLING PROBLEM? CALL OR TEXT 1-800-GAMBLER (AZ/CO/IL/IN/KS/KY/LA/MD/MO/NC/NJ/OH/PA/TN/VA) or 1-800-BETS OFF (IA). 21+ only (18+ KY). Must be present in AZ/CO/IA/IL/IN/KS/KY/LA (select parishes)/MD/MO/NC/NJ/OH/PA/TN/VA. Minimum $10 deposit required. Minimum odds -500 of greater. Bonus Bets wager excluded from returns. New customers only. T&CS, time limits and exclusions apply.
DraftKings College Basketball Boosts
Daily boosts at DraftKings are consistently in the 30% range, and its stepped-up parlay boosts can get you as high as 105%.
New users can claim the DraftKings promo code for a Bet $5, Get $200 in Bonus Bets Instantly signup bonus, as well as a 100% profit boost on a NCAA Tournament winner bet.
SPORTSBOOK
FanDuel March Madness Boosts
Get a profit boost at FanDuel, good for any bet on the Sweet 16 with minimum odds of -200. There is a $10 maximum wager when using this profit boost token.
FanDuel was also offering a bonus bet for its existing customers to use on March Madness, along with its daily odds boost promos. That includes a “Choose Your Own Reward” boost, that is typically reserved for the NBA and NFL.
The FanDuel promo code for new customers gives you up to $300 back in bonus bets for 10 straight days.

Caesars Sportsbook Tournament Pick’Em
On 10 different NCAA Tournament game days, you can make five picks at Caesars Sportsbook with a chance to win a share of $5 million in bonus bets.
Unlike Caesars Flips, where you reveal a pick that’s given to you each day, Tournament Pick’Em allows you pick either side of five bets — for free — and the more you get right, the bigger bonus you will receive.
Lower win totals get you profit boosts, but if you win 30 picks over the 10 days, you get a $25 bonus bet. That jumps to a $100 bonus bet at 35, $1,000 bonus bet at 40, $10,000 bonus bet at 45, and the share of $5 million if you get all 50 correct.
New customers claiming the Caesars Sportsbook promo code can Bet $1 and get 10 100% profit boosts.
Bet $1 & Double Your Winnings on Your Next 10 Wagers!
Evergreen Writer/Editor; Sportsbook Expert
With nearly two decades of experience in sports media, Paul Costanzo turned his professional attention to sports betting and online gambling in January of 2022. He's covered every angle of the industry since then, managing and creating content for PlayMichigan and The Sporting News, and now SBD.