Explore the best March Madness betting promos and claim over $3,500 in bonus value today. Top sportsbooks such as bet365, Caesars Sportsbook, BetMGM, and Fanatics Sportsbook offer these welcome bonuses.
With these March Madness betting promos, you can wager on any college basketball game. The NCAA Tournament First Round continues today. Check the latest NCAAB odds before placing your bets.
Refer to the table below for the top March Madness betting promos. Sign up today and secure a welcome bonus in your state.
| Best NCAAB Sportsbooks | March Madness Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $150 Bet-and-Get or $1,000 First Bet Safety Net | TOPACTION |
| Caesars Sportsbook | Bet $1, Get $150 in Bonus Bets if You Win | ACTION4BG1 |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win | ACTIONGET |
| Fanatics Sportsbook | $300 Bet-and-Get Promo or $1,000 in No Sweat Bets | Click the Link |
How to Claim College Basketball March Madness Betting Promos
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
The bet365 bonus code TOPACTION offers a $1,000 First Bet Safety Net or a $150 bet-and-get promo. Use these March Madness betting promos and make your first bet on any market with -500 odds or longer.
With the First Bet Safety Net promo, place your initial wager on any NCAAB game. If your bet doesn't win, you get your stake back in bonus bets, up to $1,000. For instance, a $1,000 first bet on UConn -5.5 (-110) results in a $1,909.09 payout if it wins, or $1,000 in bonus bets if it loses.
The bet-and-get promo requires only a $5 first bet to earn $150 in bonus bets, win or lose. Take advantage of this sign-up bonus in all legal bet365 states, such as Pennsylvania, which also gives you 50 spins for bet365 Casino. This offer is also accessible in bet365 Illinois and bet365 Tennessee.
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
Use the top March Madness betting promos to unlock a welcome bonus at Caesars Sportsbook. The Caesars Sportsbook promo code features a $150 bet-and-get promo or 10 100% Profit Boost Tokens.
Sign up using the Caesars Sportsbook promo code ACTION4BG1 to claim the $150 bet-and-get offer. Make a $1 first bet on any college basketball game, and get $150 in bonus bets if it wins. Caesars Sportsbook provides the bonus as six $25 credits, which expire after 30 days. Access this welcome offer in the following states: AZ, CO, DC, IA, IL, KY, LA, MD, ME, NY, OH, TN, VA, and WY.
With the Caesars Sportsbook promo code ACTION4DYW, a $1 first bet unlocks 10 100% Profit Boost Tokens instantly. These tokens double your profit on any winning bet, with a maximum wager of $25. Use this sign-up bonus in AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, NC, NJ, NY, OH, ON, PA, TN, VA, WV, and WY.
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
The BetMGM bonus code offers up to $1,600 in bonus value, the largest amount among March Madness betting promos. Sign up now to claim a welcome bonus in your state.
Use the BetMGM bonus code ACTIONGET and make a $10 first bet on any NCAAB market. BetMGM requires your bet to win to unlock $150 in bonus bets. If it loses, you cannot access the bonus bets. Claim this BetMGM promo in CO, MI, NJ, PA, and WV.
The BetMGM bonus code TOPTAN1600 offers a 20% first deposit match, up to $1,600 in sports bonus funds. Deposit $8,000 or more to unlock the full $1,600 welcome bonus. Access this sign-up offer in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY.
With the BetMGM bonus code TOPACTION, you get a $1,500 first bet offer. Place your initial wager on college basketball, and BetMGM returns it in bonus bets, up to $1,500, if it loses. The following states can access this welcome bonus: AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, and WY.
4. Fanatics Sportsbook
- Fanatics Sportsbook Promo: Click the Link
- 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 best March Madness betting promos at Fanatics Sportsbook. With the Fanatics Sportsbook promo, you can choose your own offer.
Use the Fanatics Sportsbook promo to unlock a $300 bet-and-get offer in AZ, CO, CT, IN, LA, MA, MD, MI, NJ, PA, TN, VA, and WV. Place a $10 daily bet (-500 odds or longer) for three straight days to access $300 in bonus bets.
The following states offer up to $1,000 in No Sweat Bets: 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 bonus into 10 days, offering a daily No Sweat Bet, up to $100. If your No Sweat Bet doesn't win, Fanatics Sportsbook refunds your stake in bonus bets, up to $100.
The Fanatics Sportsbook promo in New York offers a 300% Profit Boost Token. Sign up now and wager up to $50 on any NCAAB game.
March Madness College Basketball Betting Promos: Best Alternative Options
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.
The Kalshi promo code ACTION offers a $10 sign-up bonus. Make $100 in trades on the Kalshi Predictive Market to unlock the $10 bonus, available in all 50 states plus Washington DC.
2. Sleeper Fantasy (DFS)
- Sleeper Fantasy Promo Code: ACTION
- Sleeper Fantasy Welcome Offer: 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
Use the Sleeper Fantasy promo code ACTION and submit a $5 lineup to access $55 in free entries. A Sleeper Fantasy lineup can include players from any college basketball game.