March Madness Betting Promos: Get Best Sportsbook Offers for Weekend Games

The 2025 NCAA Basketball Tournament continues today with a full slate of games for fans to enjoy. And while watching the games and tracking brackets is exciting in its own right, college hoops fans in legal states can use the links on this page to get March Madness betting promos for wagering on all the action.

Today’s games will see a host of teams punch their ticket to the Sweet 16, while others will see the end of the road as their seasons come to a crashing end. Don’t miss out on your chance to bet on all the excitement with a variety of sportsbook promo code offers linked on this page.

In total, new users can score over $4,100 in bonuses when they sign-up with the linked March Madness sportsbook promos on this page, so don’t wait another second and claim all the bonuses before another tournament game tips off.

BetMGM Sportsbook Promo SDS1500: $1,500 First Bet Offer

New users on BetMGM Sportsbook can get a major welcome offer for wagering on the NCAA Tournament when they register for an account with the linked promo code SDS1500. After clicking the link on this page and signing up for an account, new players will receive a $1,500 First Bet Offer that ensures they will start their BetMGM experience in the right direction. That’s because, with this offer applied, any first bet that loses will be paid back (up to $1,500) in bonus bets equal to the value of the lost first wager. In simpler terms, the BetMGM Sportsbook promo code SDS1500 guarantees that new players will either win their first bet on the platform or get back up to $1,500 in bonus bets equal to their first bet if it loses.

bet365 Promo Code SDS365: $150 in Bonus Bets or $1K First Bet Safety Net

For a choice of two profitable welcome offers, NCAA Tournament bettors can register with the linked bet365 promo code SDS365. The first option for new bet365 users is an offer to bet $5 and get $150 in guaranteed bonus bets. Seeing that it’s a fully guaranteed offer, the $150 in bonus bets will be paid out whether the user wins or loses their $5+ qualifying bet. The other option from the bet365 promo code SDS365 is a $1,000 First Bet Safety Net. After claiming this offer, first-time users on the bet365 platform can make a more meaningful first bet because they will get back up to $1,000 in bonus bets (equal to the value of their lost first bet) if they lose that initial wager.

Caesars Sportsbook Promo SDS2BG1: Bet $1, Win $150 in Bonuses

First-time Caesars Sportsbook users in AZ, CO, IA, IL, KY, LA, MD, ME, NY, OH, TN, VA, WY, and Washington, D.C. can sign-up with the linked promo code SDS2BG1 to receive a generous welcome offer to bet $1 and win $150 in bonus bets. Users are required to win their qualifying wager to receive the $150 in bonuses, but with only a $1 minimum, this is as low-risk as it gets. First-time users in other states where Caesars Sportsbook is available will receive access to a different offer when they register with the link on this page. Their promo code will unlock an offer to bet $1 and get ten (10) 100% Profit Boosts. Each of the Profit Boosts has a $25 maximum so that $1 qualifying wager could return as much as $250 in bonuses.

DraftKings Promo Code: Bet $5, Get $200 in Bonus Bets Instantly

DraftKings Sportsbook is dishing out an instant bonus for NCAA Tournament bettors who sign-up with the linked promo code on this page. Click the DraftKings link to get a new player offer to bet $5 and get $200 in bonus bets instantly. This bet-and-get offer is fully guaranteed, so DraftKings players won’t need to worry about winning their first wager to receive the $200 in bonuses, it will be awarded to them either way. The offer is also paid out instantly, so as soon as that $5+ qualifying wager is placed, the $200 in bonuses is awarded to the new user’s account.

FanDuel Sportsbook Promo: Bet $5, Win $200 in Bonus Bets

First-time users on FanDuel Sportsbook can claim one of the best March Madness betting promos when they sign-up for an account with the link on this page. After successfully registering with the link above, new users on FanDuel will receive a welcome offer to bet $5 and get $200 in bonus bets (if their first bet wins). Although it’s not a fully guaranteed bet-and-get offer, the FanDuel promo code only requires a $5+ winning first bet, so it’s a very low-risk way to get started. Don’t wait around and use the link on this page to get the best welcome bonus from FanDuel Sportsbook for betting on March Madness.

Fanatics Sportsbook Promo Code: $300 Bonus or $1,000 in No-Sweat Bets

Fanatics Sportsbook has two different welcome offers for new players depending on their state at the time of sign-up. For new Fanatics users located in AZ, CO, CT, IN, LA, MA, MD, MI, NJ, PA, TN, VA, or WV, the welcome offer will allow them to bet $30 and get $300 in bonus bets. It’s a guaranteed welcome offer, so the $300 in bonuses is awarded no matter the win/loss result of the $30 qualifying wager. For new users on Fanatics in all other legal states, the promo code link on this page will supply up to $1,000 in No-Sweat Bets after registration. This offer allows new players to make a larger first bet as they will get back an equal amount (up to $1,000) in bonus bets if they lose that initial wager.

ESPN BET Sportsbook Promo Code SOUTH: $100 Bonus & 30-days of ESPN+

ESPN BET Sportsbook has a terrific two-part welcome offer for new players when they sign-up using the promo code SOUTH linked on this page. After registering for an account and entering the promo code SOUTH, new players will receive an offer to bet $10 and get $100 in bonus bets and ESPN+. The bonus bets are fully guaranteed, so new players will get $100 in bonuses whether they win or lose their $10 qualifying wager. Additionally, the ESPN BET promo code SOUTH unlocks a free 30-day trial of ESPN+ for new players.

Kevin Wolff

After years of writing as well as Data Analyst work for Pro Football Focus, Kevin Wolff is now a Sports Betting Writer for SportRadar. A graduate of Fordham University in NYC, Kevin is also a full-time dog dad when he's not writing. He can be reached at k.wolff@sportradar.com