Check out the best March Madness betting promos to claim thousands in sign-up bonus offers. With sportsbooks like bet365, BetMGM, Caesars Sportsbook, and Fanatics Sportsbook, you can access significant bonus value for college basketball games.
Use the March Madness betting promos to unlock a welcome bonus and bet on any March Madness game. Check out the latest NCAAB odds to find the best markets across the First Four and First Round of the NCAA Tournament.
Don't miss out on the action tonight as the First Four March Madness games begin. Sign up using the top March Madness betting promos and start wagering now.
| 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 |
First Four March Madness Games
- Tuesday, March 18: UNC vs. San Diego State (9:10 p.m. ET on truTV)
- 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)
March Madness College Basketball Promos: Sign Up Now and Claim Welcome Bonuses
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
The bet365 bonus code TOPACTION offers the choice between two welcome bonuses: a $1,000 First Bet Safety Net or a $150 bet-and-get promo. To participate in the March Madness betting promos at bet365, place your first bet on a market with odds of -500 or longer.
Opt for the First Bet Safety Net and place your initial wager on college basketball. Should your first bet lose, bet365 returns your stake in bonus bets, up to $1,000. Use this bet365 promo in AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, TN, and VA.
With the $150 bet-and-get promo, it only takes a $5 first bet to unlock $150 in bonus bets, win or lose. This offer includes a special perk for bettors in Illinois, Tennessee, and Pennsylvania.
bet365 Illinois offers a Super Boost, allowing you to bet up to $50 on one point scored in the Louisville vs. Creighton March Madness game on Thursday at +100 odds. Use the bet365 Tennessee Super Boost and wager up to $50 on the Tennessee Volunteers moneyline (+100) for Thursday's game. In Pennsylvania, you can access 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
BetMGM offers the highest bonus value among the best March Madness betting promos. Sign up now and use the BetMGM bonus code ACTIONGET for a $150 bet-and-get promo in CO, MI, NJ, PA, and WV. BetMGM requires you to win a $10 first bet to unlock $150 in bonus bets.
Sign up using the BetMGM bonus code TOPTAN1600 and place your first deposit. BetMGM matches 20% of the deposit in sports bonus funds, up to $1,600. You must deposit at least $8,000 for the maximum $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.
The BetMGM bonus code TOPACTION provides a $1,500 first bet offer. Place your first bet on any college basketball game; if it loses, you get your money back in bonus bets, up to $1,500. BetMGM pays out the bonus in five equal bet credits. Access 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
Sign up today for the top March Madness betting promos and unlock a welcome bonus at Caesars Sportsbook. Use the Caesars Sportsbook promo code ACTION4BG1 to secure a $150 bet-and-get offer.
With this sign-up bonus, if you win your initial $1 bet, you get $150 in bonus bets. Caesars Sportsbook grants this bonus as six $25 bet credits, valid for 30 days. The following states can access this welcome offer: AZ, CO, DC, IA, IL, KY, LA, MD, ME, NY, OH, TN, VA, and WY.
You can also access 10 100% Profit Boost Tokens with the Caesars Sportsbook promo code ACTION4DYW. Place a $1 first bet to immediately unlock these tokens, which double your profit on any winning bet. Claim 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
With the Fanatics Sportsbook promo, you can choose your own offer, depending on your state. Bettors in AZ, MI, NJ, PA can access a $300 bet-and-get promo. Sign up now and place a $10 bet daily with -500 odds or better, and get $100 in bonus bets each day. Continue for three consecutive days to collect $300 in bonus bets.
Claim one of the top March Madness betting promos and get up to $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 offers this promo over 10 days, with a daily No Sweat Bet, up to $100. If your No Sweat Bet loses, you get your stake back in bonus bets, up to $100 per day.
Sign up with the Fanatics Sportsbook promo in New York to unlock a 300% Profit Boost Token. Wager up to $50 on any college basketball game.
How to Make Picks Without College Basketball March Madness Betting Promos
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.
Use the Kalshi promo code ACTION and make $100 in trades to unlock a $10 sign-up bonus. Available in all 50 states and Washington DC, Kalshi stands out as a top alternative for March Madness college basketball betting promos.
2. PrizePicks (DFS)
- PrizePicks Promo Code: ACTIONMAX
- PrizePiks Referral Bonus: Place $5 Lineup, Get $50 Instantly in Bonus Funds
- PrizePicks States Available: AK, AL, AR, AZ, CA, DC, DE, GA, IL, KS, KY, MA, MN, MO, MS, NC, ND, NE, NM, OK, OR, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY
Sign up today and use the PrizePicks promo code ACTION to claim $50 instantly in bonus funds. Submit a $5 lineup using players from any NCAAB game, and get $50 instantly in bonus funds.