With March Madness in full swing, now is still the perfect time to grab nearly $4,000 in March Madness betting promos, as action is set to tip off all through the night. Two of tonight’s matchups—UC San Diego vs. Michigan and Utah State vs. UCLA—set the stage for an action-packed night, making this the ideal time to claim exclusive sportsbook bonuses.
This is one of the most exciting times of the year for college basketball fans, as teams battle for a national championship. Whether you're backing powerhouses like Duke, Auburn, or Houston, or looking for value on a Cinderella story, these March Madness betting promos offer bonus bets, deposit matches, and first bet insurance to maximize your chances to win.
Once you claim your bonuses, dive into the latest NCAAB odds and start making your college basketball picks for tonight’s games, tomorrow's Round of 64 slate, and beyond. Betting on March Madness futures is also a great strategy, allowing you to lock in value on top contenders before the field tightens.
Sign up now with the best March Madness betting promos and boost your bankroll tonight.
| March Madness Betting Apps | Best March Madness Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $1,000 First Bet Safety Net or $150 Bet-and-Get | TOPACTION |
| Caesars Sportsbook | Bet & Get $150 in Bonus Bets or Get 10 100% Profit Boost Tokens | ACTION4BG1 |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win or $1,600 Deposit Match | ACTIONGET |
| Fanatics Sportsbook | $1,000 in No Sweat Bets or Bet $30, Get $300 in Bonus Bets | CLICK HERE |
| Underdog Fantasy | Get Up to $1,000 Bonus Cash From First Deposit | TOPACTION |
College Basketball March Madness Betting Promos
Sign up now to claim the best March Madness betting promos and unlock thousands in bonus value before the NCAA Tournament heats up. With the Round of 64 happening now, this is the perfect time to take advantage of exclusive sportsbook offers and make bets on every March Madness game.
1. bet365
- bet365 Bonus Code: TOPACTION
- bet365 Promos: $1,000 First Bet Safety Net or Bet $5, Get $150 in Bonus Bets Win or Lose
- bet365 IL Promo: Bet $5, Get $150 in Bonus Bets + $50 Super Boost
- bet365 TN Promo: Bet $5, Get $150 in Bonus Bets + $50 Super Boost
- bet365 PA Promo: Bet $5, Get $150 in Bonus Bets + 50 Casino Spins Win or Lose
- bet365 States Available: AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, PA, TN, VA
bet365 Sportsbook is rolling out some of the best March Madness betting promos, giving new users a choice between a $1,000 First Bet Safety Net or a $150 bet-and-get bonus in AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, TN, and VA. Simply sign up with the bet365 bonus codeTOPACTION to claim these limited-time offers before tonight’s March Madness matchups.
If you opt for the First Bet Safety Net, place a qualifying wager at odds of -500 or longer. If your bet loses, bet365 refunds your full stake in bonus bets—up to $1,000.
For example, if you place a $1,000 first bet on Michigan -2.5 (-110) against UC San Diego and they cover, you win $1,909 in total payout. If your bet loses, you still get $1,000 in bonus bets for future wagers.
Looking for a low-risk option? Bet just $5 on any eligible market (-500 or longer) and receive $150 in bonus bets—win or lose. In Pennsylvania, this offer also includes 50 spins for bet365 Casino.
2. Caesars Sportsbook
- Caesars Sportsbook Promo Code: ACTION4BG1
- Caesars Sportsbook Welcome Offer: Bet $1, Get $150 in Bonus Bets if You Win
- Caesars Sportsbook Promo Code: ACTION4DYW
- Caesars Sportsbook Welcome Offer: Bet $1, Get 10 100% Profit Boost Tokens
- Caesars Sportsbook States Available: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, NC, NJ, NY, OH, ON, PA, TN, VA, WV, WY
Caesars Sportsbook is offering two March Madness betting promos, allowing new users to choose between a bet-and-get bonus or profit boost tokens. Whether you want a straightforward bonus bet offer or a way to maximize your potential winnings, these promos add extra value to your college basketball wagers and beyond.
Sign up with Caesars Sportsbook promo code ACTION4BG1 and place a $1 first bet to become eligible for $150 in bonus bets. However, for this bonus to activate, your initial $1 wager must win.
If your bet hits, Caesars Sportsbook credits you with six $25 bonus bets, which can be used on any eligible market. These bonus bets expire after 30 days, so make sure to take full advantage while betting on March Madness matchups.
Want to double your winnings? With Caesars Sportsbook promo code ACTION4DYW, you can claim 10 Profit Boost Tokens by placing just a $1 first bet.
Here’s how the Profit Boost Tokens work:
- Place a $1 first wager and instantly receive 10 Profit Boost Tokens.
- Each token can be used on bets up to $25 across multiple sports markets.
- If your bet wins, Caesars Sportsbook doubles your profit on that wager.
These boosts give you a great way to increase your potential winnings across March Madness, NBA, NHL, MLB, and more.
3. BetMGM
- BetMGM Bonus Code: ACTIONGET
- BetMGM Promo: Bet $10, Get $150 in Bonus Bets if You Win
- BetMGM Bonus Code: TOPTAN1600
- BetMGM Promo: 20% First Deposit Match, Up to $1,600 in Sports Bonus
- BetMGM Bonus Code: TOPACTION
- BetMGM Promo: $1,500 First Bet Offer
- BetMGM States Available: AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, WY
BetMGM Sportsbook is introducing three March Madness betting promos, offering new users a range of ways to boost their betting bankroll. Whether you're after extra bonus bets, a matched deposit, or a risk-free first bet, these offers let you pick the option that suits your style.
Bet $10, Win $150 in Bonus Bets (Available in CO, MI, NJ, PA, and WV):
Sign up using the BetMGM bonus code ACTIONGET and place your initial $10 wager on any market. If your bet comes through, you receive $150 in bonus bets. Keep in mind, if your bet loses, you won't be eligible for the bonus.
20% Deposit Match Up to $1,600 (Available in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY):
Register with the BetMGM bonus codeTOPTAN1600 and make your first deposit. BetMGM matches 20% of your deposit up to $1,600. For the full bonus amount, you need to deposit $8,000 or more, though any deposit starting at $10 qualifies for bonus funds.
First Bet Safety Net – Up to $1,500 in Bonus Bets (Available in AZ, DC, IA, IL, IN, LA, KS, KY, MA, MD, NC, OH, TN, VA, and WY):
Lastly, you can get started with BetMGM bonus code TOPACTION and place a wager on any college basketball game. If your first bet loses, BetMGM refunds your stake in the form of bonus bets up to $1,500, split evenly into five parts.
4. Fanatics Sportsbook
- Fanatics Sportsbook Promo: Activate Here
- Fanatics Sportsbook Bet-and-Get Promo: Bet $30, Get $300 in Bonus Bets
- Fanatics Sportsbook Sign-Up Bonus: $1,000 in No Sweat Bets
- Fanatics Sportsbook NY Sign-Up Bonus: 300% Profit Boost Token
- Fanatics Sportsbook States Available: AZ, CO, CT, DC, IA, IN, KS, KY, LA, MA, MD, MI, NJ, OH, PA, TN, VA, VT, WV, WY
Fanatics Sportsbook is offering three unique March Madness betting promos, giving new users the flexibility to choose the offer that fits their betting style and location. Whether you prefer a bet-and-get deal, No Sweat Bets, or a massive profit boost, a Fanatics Sportbook promo provides extra value as you wager on the NCAA Tournament.
$300 Bet-and-Get Bonus (Available in AZ, CO, CT, IN, LA, MA, MD, MI, NJ, PA, TN, VA, WV):
New users can score $300 in bonus bets by taking advantage of this bet-and-get offer. Here’s how it works:
- Place a $10 bet each day for three consecutive days.
- After meeting the requirement, Fanatics Sportsbook credits you with $300 in bonus bets to use across different sports markets.
Up to $1,000 in No Sweat Bets (Available in AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, and WY):
Fanatics Sportsbook is covering No Sweat Bets for 10 straight days, with a refund of up to $100 per bet if your wager doesn’t hit. If your bet loses, you get your stake back in bonus bets, giving you another shot at winning.
300% Profit Boost Token (Exclusive to New York):
New York bettors can take advantage of a massive 300% Profit Boost Token, allowing them to triple their winnings on a qualifying bet:
- Place a wager of up to $50 on any college basketball game.
- If your bet wins, Fanatics Sportsbook triples your profit, making it a great way to maximize your potential returns.
College Basketball March Madness Betting Promos: Alternate Options
1. Kalshi Predictive Market
- Kalshi Promo Code: ACTION
- Kalshi Welcome Offer: Make $100 in Trades, Get $10 Sign-Up Bonus
- Kalshi States Available: All 50 States + Washington D.C.
Kalshi offers a new way to engage with March Madness and other major events, allowing users to trade on market outcomes instead of placing traditional bets. This futures-style platform lets you speculate on everything from sports results and economic trends to political developments, providing a unique alternative for those who enjoy data-driven decision-making.
How to Claim Your Kalshi Bonus:
- Sign up with the Kalshi promo code ACTION
- Make $100 in trades across various markets
- Receive a $10 bonus to continue trading and exploring new opportunities
Whether you're tracking NCAA Tournament trends or making predictions on global events, Kalshi gives you a fresh way to participate in market-driven forecasting.
2. Underdog Fantasy (DFS)
- Underdog Fantasy Promo Code: TOPACTION
- Underdog Fantasy Sign-Up Offer: 50% Deposit Match, Up to $1,000 in Bonus Funds
- Underdog Fantasy States Available: AL, AK, AZ, AR, CA, DC, DE, GA, IL, KS, KY, MA, MN, MO, NE, NM, NC, ND, OK, OR, RI, SC, SD, TN, TX, UT, VT, VA, WI, WV, WY
Get started with Underdog Fantasy by using Underdog Fantasy promo code TOPACTION and receive a 50% deposit match bonus (up to $1,000) to build lineups featuring top college basketball players.
Whether you're entering a March Madness DFS contest or fine-tuning your daily fantasy sports strategy, this exclusive promotion gives you more flexibility to craft competitive lineups and chase big payouts.