Sign up today to access the best March Madness betting promos and wager on the First Four or any NCAAB games. With the First Round of the NCAA Tournament starting tomorrow, it's an ideal time to bet on college basketball.
By using the top March Madness betting promos, you can claim nearly $4,000 in bonus value from bet365, BetMGM, Caesars Sportsbook, and Fanatics Sportsbook. Check the latest NCAAB odds before betting on any college basketball game.
Take advantage of the best March Madness betting promos available today. Additionally, explore our guide on betting for every March Madness game.
| Top NCAAB Sportsbooks | March Madness Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $150 Bet-and-Get Or $1,000 First Bet Safety Net | TOPACTION |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win | ACTIONGET |
| Caesars Sportsbook | Bet $1, Get $150 in Bonus Bets if You Win | ACTION4BG1 |
| Fanatics Sportsbook | $300 Bet-and-Get Promo or $1,000 in No Sweat Bets | Click Here |
First Four March Madness Games
- Wednesday, March 19: Mount St. Mary's vs. American University (6:40 p.m. ET on truTV)
- Wednesday, March 19: Xavier vs. Texas (9:10 p.m. ET on truTV)
College Basketball March Madness Betting Promos: Best Sign-Up Bonus Offers
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 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
Sign up today and use the bet365 bonus code TOPACTION to unlock the best March Madness betting promos. bet365 offers:
$1,000 First Bet Safety Net: Make your first bet on any market with -500 odds or longer. If it doesn't win, bet365 returns your stake in bonus bets, up to $1,000. Claim this bet365 promo in AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, TN, and VA.
$150 Bet-and-Get Promo: Bet $5 on any market with -500 odds or longer to unlock $150 in bonus bets, win or lose. Use this sign-up bonus in the following states: AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, PA, TN, and VA. The offers below provide an additional perk to this promo.
bet365 Illinois Super Boost: Bet up to $50 on one point scored in the Creighton vs. Louisville game at +100 odds.
bet365 Tennessee Super Boost: With this offer, you can bet up to $50 on the Tennessee Volunteers moneyline (+100) in Thursday's March Madness game.
Pennsylvania: In addition to the $150 bet-and-get promo, you get 50 spins for bet365 Casino.
2. 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
Check out the top March Madness betting promos to claim up to $1,600 in bonus value at BetMGM. Use the BetMGM bonus code to access a sign-up bonus in your state.
$150 Bet-and-Get Promo: Use the BetMGM bonus code ACTIONGET and make a $10 first bet on any NCAAB game. You must win your first bet to unlock $150 in bonus bets. Use this BetMGM promo in CO, MI, NJ, PA, and WV.
20% First Deposit Match: The BetMGM bonus code TOPTAN1600 offers a 20% deposit match, up to $1,600 in sports bonus funds. Sign up now and deposit $8,000 or more to unlock the full $1,600 bonus. Access this sign-up bonus in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY.
$1,500 First Bet Offer: With the BetMGM bonus code TOPACTION, you get a $1,500 first bet offer. Bet on March Madness games, and if your wager loses, get your stake back in bonus bets, up to $1,500. Claim this welcome offer in AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, and WY.
3. Caesars Sportsbook
- Caesars Sportsbook Promo Code: ACTION4BG1
- Caesars Sportsbook Sign-Up Bonus: Bet $1, Get $150 in Bonus Bets if You Win
- Caesars Sportsbook Promo Code: ACTION4DYW
- Caesars Sportsbook Sign-Up 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
Use the Caesars Sportsbook promo code to access two March Madness betting promos. Place just a $1 first bet to qualify for these welcome offers:
$150 Bet-and-Get Promo: Sign up today and use the Caesars Sportsbook promo code ACTION4BG1 for this promo. Make a $1 first bet on any NCAAB market, and get $150 in bonus bets if your first bet wins. The following states can access this promo: AZ, CO, DC, IA, IL, KY, LA, MD, ME, NY, OH, TN, VA, and WY.
10 100% Profit Boost Tokens: Use the Caesars Sportsbook promo code ACTION4DYW and make a $1 first bet to instantly unlock 10 100% tokens that double your profit on winning bets, up to 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.
4. Fanatics Sportsbook
- Fanatics Sportsbook Promo: Click 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
The best March Madness betting promos feature three welcome bonuses at Fanatics Sportsbook. With the Fanatics Sportsbook promo, you can choose your own offer.
$300 Bet-and-Get Promo: Place a daily $10 bet on any market with -500 odds or longer to unlock $100 in bonus bets. Complete this for three straight days to earn $300 in bonus bets in the following states: AZ, MI, NJ, and PA.
$1,000 in No Sweat Bets: With this sign-up bonus, you get a daily No Sweat Bet, up to $100, for 10 straight days. Place your daily No Sweat Bet on any market with -500 odds or longer, and get it back in bonus bets, up to $100, if it loses. Use this welcome offer in AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, and WY.
300% Profit Boost Token: Exclusively for New York bettors, this offer allows you to use a 300% Profit Boost Token on any game, with a maximum wager of $50.
March Madness College Basketball Betting Promos: Best Alternative Options
1. Kalshi Predictive Market
- Kalshi Promo Code: ACTION
- Kalshi Sign-Up Bonus: Make $100 in Trades, Get $10 Sign-Up Bonus
- Kalshi States Available: All 50 States + Washington D.C.
Sign up today and use the Kalshi promo code ACTION to unlock a $10 sign-up bonus. With this promo, you must make $100 in trades to claim the $10 bonus.
2. Rebet Social Sportsbook
- Rebet Promo Code: ACTION
- Rebet Welcome Offer: 100% Deposit Match, Up to $100
- Rebet States Available: AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, IL, IN, IA, KS, KY, ME, MD, MA, MN, MS, MO, NE, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY
Use the Rebet promo code ACTION for a 100% deposit match, up to $100. Use Rebet Coins or Rebet Cash to make picks on any college basketball game.