Sportsbook Promos and Boosts for March Madness Friday Games

March Madness is one of the biggest betting events of the year, and sportsbooks are rolling out some of their best promos and odds boosts for March Madness 2025's first round Friday games.

From boosted odds on Cinderella teams to bracket insurance and bonus bets for every round, sportsbooks are offering creative ways to keep bettors engaged throughout the tournament. Knowing where to find the best March Madness betting promos and how to use them effectively can make a significant difference in your overall returns during the tournament.

To help you navigate the top sportsbook promos, we've compiled a list of the best March Madness boosts and exclusive promotions for 2025. This guide breaks down the biggest offers, explains how to claim them, and highlights which sportsbooks provide the most valuable promotions for different betting styles. Before placing your next tournament wager, make sure you're taking full advantage of the best bonuses available.

Best March Madness Promos and Boosts

FanDuel March Madness Promos and Boosts

Bet $5, Win $200 in Bonus Bets

New customers only. Min. deposit $5+. Bet $5+ and win $200 in Bonus Bets, if your bet wins (within 72 hours). 

Claim $200

New FanDuel customers are eligible for a bet $5, win $200 in bonus bets March Madness welcome offer. Simply sign up with a new account and make a minimum $5 deposit. Then, place your first real-money wager of $5 or more on any FanDuel Sportsbook market and FanDuel will credit your account with $200 in bonus bets if your first bet wins.

Keep an eye out for odds boosts as we get closer to the tip-off of Thursday's opening round.

DraftKings March Madness Promos and Boosts

Bet $5, Win $300 + $1K Deposit Bonus

Terms and conditions apply.

Claim $300

DraftKings has always been one the most popular sportsbooks in the United States, so it's no surprise when they roll out the red carpet for new customers ahead of the best tournament in sports, March Madness. You can activate a bet $5, get $200 in bonuses welcome offer. Just make a $5 minimum deposit and any wager of $5 or more. Whether your wager wins or loses, you'll receive $200 in bonuses instantly. Bonus bets will be sent as eight (8) $25 bonuses.

bet365 March Madness Promos and Boosts

Bet $5, Get $150 in Bonus Bets Win or Lose*

*Deposit required. Mobile app only. Bonus Bets wager excluded from returns. T&Cs, time limits and exclusions apply. Gambling problem? Call 1-800-GAMBLER

Claim Now

bet365 is helping new users prepare for March Madness 2025 with a generous bet $5, get $150 in bonus bets welcome bonus using bet365 bonus code SBRBONUS. bet365 has daily boosts and super boosts leading up to the games as well - a major bonus over other sportsbooks.

BetMGM March Madness Promos and Boosts

Up To $1,500 First Bet

Bonus bets will expire in 7 days. One new customer offer only. Additional terms and conditions apply.

Claim $1,500

BetMGM offers a March madness promotion, one of the best in the business. It's an offer of up to $1,500 back in bonus bets if your first bet loses. Use the BetMGM bonus code SBR1550 to activate this deal.

Caesars March Madness Promos and Boosts

Bet $1, Get Ten 100% Profit Boosts

New users only. Must use promo code. Min. $10 deposit. Max. bonus is ten 100% Profit Boost tokens. Profit Boost tokens expire in 14 days. Void where prohibited. Full terms.    

Claim Boosts

 *minimum +6400 odds

Caesars has always been generous to their new users and their bonuses are no different for March Madness 2025. The Caesars promotion offers a bet $1, get 10 100% profit boosts promo. Just use the Caesars Sportsbook promo code SBRBONUSDYW when you sign up.