Capitalize on the top March Madness betting promos to secure sign-up bonus offers for the NCAA Basketball tournament. It's an incredible time for college basketball betting, and you can make the most out of it by joining top-tier sportsbooks like bet365, BetMGM, Caesars Sportsbook, and Fanatics Sportsbook to unlock welcome bonuses.
With the top March Madness betting promos, you can wager on anything NCAAB-related. The NCAAB odds give you access to every March Madness game, while the NCAAB future odds provide insights for betting on the National Champion.
Sign up today with the best college basketball betting promos, offering up to $4,000 in bonus value.
| Best 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 |
College Basketball Betting Promos: Claim Up to $4,000 in Bonus Value Today
Explore the top March Madness betting promos with our comprehensive breakdown. Dive into our guide on how to bet on every March Madness 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 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
Check out the bet365 bonus code TOPACTION to claim a $1,000 First Bet Safety Net or a $150 bet-and-get promo. With the best March Madness betting promos, you choose between the sign-up offers in all legal bet365 states, except Pennsylvania, which only provides the $150 bet-and-get promo.
Use the First Bet Safety Net promo and bet on any NCAAB market with -500 odds or longer. If your bet doesn't win, bet365 refunds your stake in bonus bets, up to $1,000. For example, a $1,000 first bet on the San Diego State ML (+160) against UNC yields a $2,600 payout if it wins or $1,000 in bonus bets if it loses.
The bet365 Illinois offer includes a Super Boost, with a maximum wager of $50. Bet on one point being scored in the Creighton vs. Louisville game at +100 odds. Use the bet365 Tennessee Super Boost and wager up to $50 on the Tennessee Volunteers ML (+100). In PA, you get an additional perk of 50 casino spins.
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
The top March Madness betting promos offer three welcome bonuses at BetMGM Sportsbook. Use the BetMGM bonus code ACTIONGET and place a $10 first bet on any market. If you win, you get $150 in bonus bets; if you lose, you don't get the $150 bonus. Claim this BetMGM promo in CO, MI, NJ, PA, and WV.
Register using the BetMGM bonus code TOPTAN1600 and make your first deposit. BetMGM matches 20% of the deposit in sports bonus funds, up to $1,600. Deposit $8,000 or more to unlock the full $1,600 bonus. Use this welcome bonus in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY.
With the BetMGM bonus code TOPACTION, wager on any college basketball game. If your first bet loses, BetMGM refunds your stake in bonus bets, up to $1,500. Access this sign-up 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 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 Caesars Sportsbook promo code to unlock March Madness betting promos. Sign up today and use the Caesars Sportsbook promo code ACTION4BG1 to claim a $150 bet-and-get promo.
To activate this sign-up bonus, you must win your $1 first bet to get $150 in bonus bets. If successful, Caesars Sportsbook credits you with six $25 bonuses, which expire after 30 days. Use this welcome bonus in AZ, CO, DC, IA, IL, KY, LA, MD, ME, NY, OH, TN, VA, and WY.
Place a $1 first bet to instantly unlock 10 100% Profit Boost Tokens using the Caesars Sportsbook promo code ACTION4DYW. Wager up to $25 on any market and double your profit on any winning bet. Claim this sign-up offer 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: 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
The best March Madness betting promos offer three sign-up bonuses at Fanatics Sportsbook, allowing you to choose your own offer. Sign up now and use the Fanatics Sportsbook promo to claim a $300 bet-and-get offer available in AZ, MI, NJ, and PA. Make a $10 daily bet for three consecutive days to unlock $300 in bonus bets.
Get up to $1,000 in No Sweat Bets with the Fanatics Sportsbook promo 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. Fanatics Sportsbook spreads this offer across 10 days, giving you a daily No Sweat Bet, up to $100. If your No Sweat Bet doesn't win, you get it back in bonus bets, up to $100.
Use the Fanatics Sportsbook promo in New York to access a 300% Profit Boost Token. Wager up to $50 on any college basketball game.
March Madness College Basketball Betting Promos: Top Alternative 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.
Sign up using the Kalshi promo code ACTION and make $100 in trades to access a $10 bonus. The Kalshi Predictive Market allows you to make trades on any market, including March Madness.
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
Use the Underdog Fantasy promo code TOPACTION for a 50% deposit match, up to $1,000 in bonus funds. Use the bonus funds to create a lineup using players from any college basketball game.