Take advantage of the best March Madness betting promos to unlock up to $4,000 in bonus value, perfect for any college basketball game. The excitement begins with the Sweet 16's four-game slate on Thursday.
Don't miss out on the top March Madness betting promos, featuring a sign-up bonus from bet365, Caesars Sportsbook, BetMGM, and Fanatics Sportsbook. Sign up now to capitalize on these welcome offers.
Read on for a detailed breakdown of the premier sportsbook promos for March Madness. Make sure you check the latest NCAAB odds before you place your bets on the Sweet 16.
| Top NCAAB Betting Apps | March Madness Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $150 Bet-and-Get or $1,000 First Bet Safety Net | TOPACTION |
| Fanatics Sportsbook | $300 Bet-and-Get Promo or $1,000 in No Sweat Bets | Claim Here |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win | ACTIONGET |
| Caesars Sportsbook | Bet $1, Get 10 100% Profit Boost Tokens | ACTION4DYW |
Best March Madness College Basketball Betting Promos for Sweet 16
1. bet365
- bet365 Bonus Code: TOPACTION
- bet365 Promo: $1,000 First Bet Safety Net or Bet $5, Get $150 in Bonus Bets, Win or Lose
- 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
Use the bet365 bonus code TOPACTION to unlock a $1,000 First Bet Safety Net or a $150 bet-and-get promo. These March Madness betting promos require placing your first bet on a market with -500 odds or longer.
With the First Bet Safety Net, you can make an initial bet on any game, such as Maryland vs. Florida. If your bet loses, bet365 refunds your stake in bonus bets, up to $1,000. For example, a $1,000 first bet on Florida -9.5 (-110) results in a $1,909.09 payout if it wins, or $1,000 in bonus bets if it loses.
The bet-and-get offer requires a $5 initial bet to secure $150 in bonus bets, win or lose. Additionally, this bet365 promo includes 50 casino spins for users in Pennsylvania. As one of the top sportsbook promos, you can also access this welcome offer in bet365 Illinois and bet365 Tennessee.
2. Fanatics Sportsbook
- Fanatics Sportsbook Promo: Claim 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
Check out the March Madness betting promos at Fanatics Sportsbook, where you can choose your own offer. Use the Fanatics Sportsbook promo to access a $300 bet-and-get offer in the following states: AZ, CO, CT, IL, IN, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, and WV. Over a three-day span, place a $10 daily bet to unlock $300 in bonus bets.
The Fanatics Sportsbook promo offers $1,000 in No Sweat Bets 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 splits this welcome bonus into 10 days, offering a daily No Sweat Bet, up to $100. If your No Sweat Bet loses, Fanatics Sportsbook returns it in bonus bets, up to $100.
Use the Fanatics Sportsbook promo in New York to obtain a 300% Profit Boost Token, and bet up to $50 on any college basketball game in the Sweet 16.
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
Discover the March Madness betting promos at BetMGM and grab up to $1,600 in bonus value. Use the BetMGM bonus code ACTIONGET to enjoy a $150 bet-and-get offer—win your initial $10 bet to unlock the bonus. Use one of the top sportsbook promos in CO, MI, NJ, PA, and WV.
Opt for a 20% deposit match with the BetMGM bonus code TOPTAN1600. BetMGM matches 20% of your first deposit, up to $1,600 in sports bonus funds. With this offer, you must deposit at least $8,000 to obtain the full $1,600 bonus. Claim this welcome bonus in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY.
Sign up with the BetMGM bonus code TOPACTION and place your first bet on the Sweet 16. If it doesn’t win, you get a refund in bonus bets, up to $1,500, split into five equal credits. The following states can access this offer: AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, and WY.
4. Caesars Sportsbook
- Caesars Sportsbook Promo Code: ACTION4DYW
- Caesars Sportsbook Welcome Bonus: 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
Don't miss out on one of the top March Madness betting promos at Caesars Sportsbook. The Caesars Sportsbook promo code ACTION4DYW offers 10 100% Profit Boost Tokens.
Place a $1 first bet and unlock the Profit Boost Tokens instantly. Each token allows you to wager up to $25, doubling your profit on any winning bet. These Profit Boost Tokens expire after 14 days.
For those looking to make informed bets, check out our Sweet 16 March Madness betting primer. It offers a detailed analysis of the Sweet 16 in the NCAA Tournament to help you find favorable betting angles.
Top Alternative Options to College Basketball March Madness Betting Promos
1. Kalshi Predictive Market
- Kalshi Promo Code: ACTION
- Kalshi Sign-Up Offer: Make $100 in Trades, Get $10 Sign-Up Bonus
- Kalshi States Available: All 50 States + Washington D.C.
Sign up using the Kalshi promo code ACTION today and trade $100 to unlock a $10 bonus. Unlike a traditional sportsbook, Kalshi allows you to make trades instead of placing bets. Once you complete $100 in trades, you get a $10 bonus.
2. Sleeper Fantasy (DFS)
- Sleeper Fantasy Promo Code: ACTION
- Sleeper Fantasy Sign-Up Bonus: Place $5 Lineup, Get $55 in Free Entries
- Sleeper Fantasy States Available: AK, AR, CA, CO, DC, FL, GA, KS, KY, MA, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VT, WI, WY
The Sleeper Fantasy promo code ACTION offers a $55 welcome bonus. Sign up now and place a $5 lineup using players from any NCAAB game to access $55 in free entries, which expire after 10 days.