Use the best March Madness betting promos to unlock thousands in sign-up bonus offers. Claim a welcome bonus and place your first bet on any college basketball game. Today's NCAAB conference tournament games feature over 14 ranked teams, including the No. 1 Duke Blue Devils and No. 2 Houston Cougars.
The top March Madness betting promos come from bet365, BetMGM, Caesars Sportsbook, and Fanatics Sportsbook. Make your bets today to earn bonus bets for next week's tournament action.
Check out the latest NCAAB odds before wagering on any college basketball. View the table below to access the best March Madness betting promos today.
| Top NCAAB Sportsbooks | March Madness Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $1,000 First Bet Safety Net or $150 Bet-and-Get Promo | TOPACTION |
| BetMGM | 20% First Deposit Match, Up to $1,600 | TOPTAN1600 |
| Caesars Sportsbook | Bet $1, Get 10 100% Profit Boost Tokens | ACTION4DYW |
| Fanatics Sportsbook | $300 Bet-and-Get Promo or $1,000 in No Sweat Bets | Click Here |
| Rebet Social Sportsbook | 100% Deposit Match, Up to $100 | ACTION |
March Madness College Basketball Betting Promos: Sign Up and Bet on Any Game Today
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, IN, KY, LA, NC, NJ, OH, PA, VA
The bet365 bonus code TOPACTION unlocks two top-notch March Madness betting promos. Sign up now and choose between a $1,000 First Bet Safety Net or a $150 bet-and-get promo.
With the First Bet Safety Net, place your first bet on any market with odds of -500 or longer. If your bet doesn't win, you get your stake back in bonus bets, up to $1,000.
The bet-and-get offer is one of the best March Madness college basketball betting promos, as it only takes a $5 first bet (-500 odds or longer) to unlock $150 in bonus bets win or lose. In Pennsylvania, this welcome offer includes 50 spins for bet365 Casino.
2. BetMGM
- 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 at BetMGM, offering up to $1,600 in bonus value. With the BetMGM bonus code, you choose between a 20% first deposit match or a $1,500 first bet offer.
Sign up using the new BetMGM bonus code TOPTAN1600 and make your first deposit. BetMGM matches 20% of your deposit in sports bonus funds, up to $1,600. BetMGM requires a deposit of $8,000 or more to access the full $1,600 bonus. Use this BetMGM promo in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY.
Use the BetMGM bonus code TOPACTION and bet on any college basketball game. If your first bet loses, you get your stake back in bonus bets, up to $1,500. BetMGM splits the bonus into five equal bet credits. You can access this offer in the same states as the deposit match, plus Illinois, Louisiana, Ohio, and Virginia.
3. Caesars Sportsbook
- Caesars Sportsbook Promo Code: ACTION4DYW
- Caesars Sportsbook Sign-Up 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 Caesars Sportsbook promo code ACTION4DYW to claim 10 100% Profit Boost Tokens. This March Madness betting promos require a $1 first bet to access the bonus.
The Caesars Sportsbook promo code ACTION4DYW offers one of the more unique college basketball March Madness betting promos. By placing a $1 wager, you instantly unlock 10 100% Profit Boost Tokens, which you can use on any game. These tokens double your profit on any winning bet, 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 at Fanatics Sportsbook feature three offers, depending on your location. Use the Fanatics Sportsbook promo in Arizona, Michigan, New Jersey, or Pennsylvania to unlock a $300 bet-and-get promo. Sign up now and make a $10 daily wager to claim $100 in bonus bets. Complete this process for three days to earn the full $300 bonus.
Get up to $1,000 in No Sweat Bets in the following states: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, and WY. This offer spreads your welcome bonus over 10 days, with each day featuring a No Sweat Bet, up to $100. If your No Sweat Bet doesn’t win, you get a refund in bonus bets, up to $100.
The Fanatics Sportsbook NY promo is exclusive to New York bettors. Claim a 300% Profit Boost Token, which lets you wager up to $50 on any game.
Top Alternative Options to College Basketball March Madness Betting Promos
1. Sleeper Fantasy (DFS)
- Sleeper Promo Code: ACTION
- Sleeper Fantasy Welcome 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
Sign up today and use the Sleeper promo code ACTION to unlock a $55 welcome bonus. Place a $5 lineup using players from any game to earn $55 in free entries. Sleeper Fantasy provides this bonus as 11 $5 credits, which you must use within 10 days.
2. Rebet Social Sportsbook
- Rebet Promo Code: ACTION
- Rebet Sign-Up 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
If you're seeking a widely available alternative to the top March Madness college basketball betting promos, consider Rebet Social Sportsbook. With the Rebet promo code ACTION, you get a 100% deposit match, up to $100. Use Rebet Coins or Rebet Cash to make picks on any NCAAB game.