March Madness Sportsbook Promos and Odds Boosts Today
March Madness is one of the biggest betting events of the year, and sportsbooks are rolling out some of their best March Madness promos and odds boosts for 2025.
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
New customers only. Deposit min. $5. Place first bet of $5+ and win $200 in Bonus Bets, if your bet wins. (within 72 hours).
| Offer Type | Description | Promo Code |
|---|---|---|
| Sign Up | Bet $5, get $200 in bonus bets if you win | No code required |
| Profit Boost | Get a 25% boost on one college basketball bet | No code required |
| Promo | Get one bet back token to use on any CBB live bet through the first weekend of March Madness | No code required |
| Promo | Bet a March Madness underdog ML, get a share of $1 million in bonus bets if they're the lowest seed of the day to win | No code required |
New FanDuel customers are eligible for a bet $5, win $200 in bonus bets March Madness welcome offer with no FanDuel promo code required. 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
Terms and conditions apply.
| Offer Type | Description | Promo Code |
|---|---|---|
| Sign Up | Bet $5, get $200 in bonus bets | No code required |
| Promo | Get a no-sweat 2+ leg parlay/SGP/SGPx | No code required |
| Promo | Place a 4+ leg CBB futures parlay, get a 50% parlay profit boost token | No code required |
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 with no DraftKings promo code needed. 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
*Deposit required. Bonus Bets wager excluded from returns. T&Cs, time limits and exclusions apply. Gambling problem? Call 1-800-GAMBLER
| Offer Type | Description | Promo Code |
|---|---|---|
| Sign Up | Bet $5, get $150 in bonus bets OR get a first bet safety net up to $1,000 | SBRBONUS |
| Profit Boost | Get a 30% boost for one 3+ leg First Four SGP | SBRBONUS |
| Profit Boost | Get a boost (up to 100%) for one CBB parlay | SBRBONUS |
| Promo | Cash your moneyline bets if your team goes up by 15+ | SBRBONUS |
| Bracket Challenge | Fill out your March Madness bracket for a shot at $10 million | SBRBONUS |
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
Bonus bets will expire in 7 days. One new customer offer only. Additional terms and conditions apply.
| Offer Type | Description | Promo Code |
|---|---|---|
| Sign Up | Up to $1,500 first bet + $50 bonus bet | SBR1550 |
| Profit Boost | Get a boost on one First Four bet | SBR1550 |
| Promo | Play BetMGM's free March Madness pick'em to win a share of $250,000 in bonus bets | SBR1550 |
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
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.
| Offer Type | Description | Promo Code |
|---|---|---|
| Sign Up | Bet $1, get ten 100% profit boosts | SBRBONUSDYW |
| Profit Boost | Get a 25% boost on one First Four bet | SBRBONUSDYW |
| Promo | Bet $10+ on a March Madness parlay for a chance to attend the Final Four in person | SBRBONUSDYW |
| Promo | Every March Madness parlay won gets a share of $500,000 in bonus bets* | SBRBONUSDYW |
*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.
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