Best March Madness Betting Promos: Claim $4,000+ in Bonus Bets
By Drew Ellis in College Basketball
Published:
The NCAA Tournament gets into full swing today and US online sportsbooks are keeping the promo offers coming.
With March Madness being one of the top betting events each year, there’s a lot of quality bonus offers from the biggest online sportsbooks. Overall, US sportsbooks are offering up over $4,000 in bonus bets collectively.
Here’s a closer look at some of the March Madness betting promos available from top operators.
- BETMGM SPORTSBOOK
USE CODE SBD1500 TO GET UP TO $1,500 PAID BACK
- BET365 SPORTSBOOK
BET $10 & GET $365 IN BONUS BETS WITH CODE DIME365
- DRAFTKINGS SPORTSBOOK
BET $5 & GET $200 IN BONUS BETS INSTANTLY!
- FANDUEL SPORTSBOOK
GET $300 IN BONUS BETS EVERY DAY FOR 10 DAYS
- 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 1-800-522-4700, (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). 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 customer. $5+ first-time bet req. Max. $200 issued as non-withdrawable Bonus Bets that expire in 7 days (168 hours). Stake removed from payout. Terms: sportsbook.draftkings.com/promos. Ends 4/6/26 at 11:59 PM ET. Sponsored by DK.
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
BETMGM SPORTSBOOK T&Cs: Gambling problem? Call 1-800-GAMBLER (Available in the US), Call 877-8-HOPENY or text HOPENY (467369) (NY), Call 1-800-327-5050 (MA), 1-800-NEXT-STEP (AZ), 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. This promotional offer is not available in DC, MS, NY, NV, ON, or PR.
BetMGM Sportsbook Code SBD1500: Up To $1,500 In Bonus Bets
21+ Only. Gambling problem? Call 1-800-GAMBLER (US). New customers only, subject to eligibility requirements. Not available in MS, NV, ON, or PR.
One offer that will provide one of the largest bonus-bet offers is BetMGM Sportsbook. New users can use our exclusive promo code of SBD1500 to get back up to $1,500 in a bonus bet if your initial wager loses. Just make a first deposit of at least $10 and then use a First Bet Offer Token on any wager on any sport, including any NCAA Tournament games. You can use your First Bet Token on odds of -10000 or better, so plenty of favorable options. Just be sure to have your First Bet Offer Token activated while placing the wager. Should that bet lose, BetMGM will return your wager in a bonus bet, up to $1,500. So, if you make a first wager of $100 and it loses, you will get a $100 bonus bet back. The bonus bet will be available after the completion of your initial wager and is will expire after seven days.
FanDuel Sportsbook: Up To $300 in Bonus Bets for 10 Days

If you’re looking for bonus bets, you won’t find more than at FanDuel Sportsbook with this latest bonus offer. Just sign-up for an account and FanDuel will issue you a Bet Rest Token each day for the next 10 days. Use those tokens on any wager, but know they expire after 24 hours. Should that wager lose, you will be refunded with a bonus bet, up to $300. That’s up to $3,000 back in bonus wagers to make on March Madness. Each bonus bet expires after seven days of being issued. The bonus bets can’t be used with other odds boosts.
DraftKings Sportsbook: $200 in Bonus Bets + 100% Profit Boost
SPORTSBOOK
DraftKings Sportsbook is handing out a little extra for the NCAA Tournament. New users just need to place a wager of at least $5 to get $200 in bonus bets, as well as a 100% profit boost for the NCAA Tournament Winner market. No matter the outcome of your initial wager, you will still receive both bonuses. The $200 in bonus bets will come in the form of 8, $25 bonus wagers. You will have seven days to use up your bonus bets before they expire. When it comes to your profit boost, just choose the NCAA Tournament winner you feel best about, and make a max wager of $10 on that team and receive 100% improved odds on your wager. That provides a real opportunity to make the most out of March Madness this year.
Bet365 Sportsbook Promo Code DIME365: Get $365 In Bonus Bets
SPORTSBOOK
It’s only fitting for bet365 Sportsbook to give out $365 in bonus bets with its latest promo code offer for March Madness. Just use our exclusive code of DIME365 to get started. Once you’ve signed up for an account, make your first wager of $10 or more. No matter if that wager wins or losses, bet365 will issue you $365 worth of bonus bets to use as your see fit. Make as many wagers as you’d like with your $365 in bonus bets. You can divide up the funds however you’d like. The bonus bets can’t be used on teasers or tied to other bonuses like profit boosts or bet boosts. You will have seven days to use up your bonus bet funds.
Caesars Sportsbook Promo Code SBDDYW: Double Your Winnings on 10 Bets
Bet $1 & Double Your Winnings on Your Next 10 Wagers!
Caesars Sportsbook wants to help make the opening weekend of March Madness a memorable one for you. Using our exclusive promo code SBDDYW, you can get signed up and then make a bet of just $1 or more to earn 10 100% profit boosts. That’s all it takes. Make a wager of at least $1 on any market with odds of -10000 or longer to receive 10 100% profit boosts in return. It doesn’t matter what the outcome is of your qualifying wager. The profit boosts will expire 14 days after being issued and the maximum wager you can use for each is $25. Odds for each profit boost must be -10000 or longer. The profit boosts can’t be attached to a bonus bet or other offers. With 48 March Madness games taking place from Thursday-Sunday, there’s plenty of opportunities to use the profit boosts.
Drew Ellis has decades of experience in media covering sports, gambling and general news. He has provided news coverage for online and retail casino developments across the US and around the globe.