With the NCAA Basketball Tournament almost underway, now is the perfect time to take advantage of the best March Madness betting promos and secure exclusive sign-up bonuses. Whether you're betting on the First Four matchups tonight—St. Francis vs. Alabama State and North Carolina vs. San Diego State—or looking ahead to the later rounds, these top-tier sportsbook offers can give you extra value as the tournament heats up.
Join leading sportsbooks like bet365, BetMGM, Caesars Sportsbook, and Fanatics Sportsbook to unlock bonus bets, deposit matches, and more. These March Madness betting promos allow you to bet on any NCAA Basketball market, from individual game lines to March Madness futures, where you can predict the National Champion.
Right now, the best college basketball betting promos are offering up to $4,000 in total bonus value. Sign up today to make the most of March Madness and start placing bets with a boosted bankroll.
| March Madness Betting Apps | Best March Madness Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $1,000 First Bet Safety Net or $150 Bet-and-Get | TOPACTION |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win or $1,600 Deposit Match | ACTIONGET |
| Caesars Sportsbook | Bet & Get $150 in Bonus Bets or Get 10 100% Profit Boost Tokens | ACTION4BG1 |
| Fanatics Sportsbook | $1,000 in No Sweat Bets or Bet $30, Get $300 in Bonus Bets | CLICK HERE |
| Underdog Fantasy | Get Up to $1,000 Bonus Cash From First Deposit | TOPACTION |
College Basketball March Madness Betting Promos
Discover the top March Madness betting promos with our in-depth breakdown. Check out our detailed guide on how to bet on every NCAA tournament game today and maximize your chances of winning throughout March Madness.
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 with bet365 bonus code TOPACTION and take advantage of two March Madness betting promos. You can either claim a $1,000 First Bet Safety Net or opt for the $150 bet-and-get promotion, depending on your betting strategy. This exclusive offer is available in all legal bet365 states, except Pennsylvania, which only offers the $150 bet-and-get promo.
With the First Bet Safety Net, you can bet on any NCAA Basketball market with odds of -500 or longer. If your first bet doesn't win, bet365 refunds your stake in bonus bets, up to $1,000.
For example, if you place a $1,000 first bet on San Diego State moneyline (+170) against North Carolina, you either:
- Win and collect $2,700 in total payout ($1,700 profit + $1,000 stake returned), or
- Lose and receive $1,000 in bonus bets, giving you another shot at winning.
Bet365 is also offering exclusive Super Boosts alongside the $150 bet-and-get promo for bettors in Illinois and Tennessee:
- bet365 Illinois Super Boost: Wager up to $50 on one point being scored in the Creighton vs. Louisville game at +100 odds.
- bet365 Tennessee Super Boost: Place a Super Boost bet up to $50 on the Tennessee Volunteers moneyline (+100).
PA bettors also receive 50 bet365 casino spins as an additional perk to their bet-and-get offer.
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 Sportsbook is offering three exciting March Madness betting promos, giving new users multiple ways to start betting with extra value. Whether you’re looking for bonus bets, a deposit match, or a safety net on your first wager, these BetMGM promotions cover all the bases.
1. Bet $10, Win $150 in Bonus Bets (Available in CO, MI, NJ, PA, and WV):
Use BetMGM bonus code ACTIONGET and place a $10 first bet on any market. If your bet wins, you receive $150 in bonus bets. However, if your wager loses, you do not qualify for the bonus.
2. 20% Deposit Match Up to $1,600 (Available in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY):
Sign up with BetMGM bonus code TOPTAN1600 and make your first deposit to receive a 20% match in bonus funds, up to $1,600. To unlock the full bonus, deposit $8,000 or more, but any qualifying deposit of at least $10 earns a matched bonus.
3. First Bet Offer – Up to $1,500 in Bonus Bets (Available in AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, and WY):
With BetMGM bonus code TOPACTION, place a wager on any college basketball game. If your first bet loses, BetMGM refunds your stake in bonus bets, up to $1,500.
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
Take advantage of Caesars Sportsbook’s top March Madness betting promos with two sign-up offers. Whether you're looking for a bet-and-get bonus or profit boost tokens, these promotions give you extra value as you wager on college basketball.
$150 Bet-and-Get Promo (Available in AZ, CO, DC, IA, IL, KY, LA, MD, ME, NY, OH, TN, VA, and WY):
Sign up with Caesars Sportsbook promo code ACTION4BG1 and place a $1 first bet to qualify for $150 in bonus bets. However, your initial $1 wager must win for the bonus to activate.
If successful, Caesars Sportsbook credits you with six $25 bonus bets, which you can use on any eligible market. These bonus bets expire after 30 days, so be sure to make the most of them during March Madness.
10 Profit Boost Tokens – Double Your Winnings (Available 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):
Alternatively, you can claim 10 Profit Boost Tokens by signing up with Caesars Sportsbook promo code ACTION4DYW.
Here’s how it works:
- Place a $1 first bet to instantly unlock 10 100% Profit Boost Tokens.
- You can wager up to $25 per token on any eligible betting market.
- If your bet wins, Caesars doubles your profit on that wager.
These tokens give you the opportunity to maximize your returns while betting on March Madness, NBA, NHL, MLB, and more.
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
Fanatics Sportsbook is offering three Fanatics Sportsbook promo offers, giving you the flexibility to choose the best March Madness betting promo for your style. Whether you prefer a bet-and-get reward, No Sweat Bets, or a massive profit boost, there’s an option to enhance your betting experience.
1. $300 Bet-and-Get Offer (Available in AZ, MI, NJ, and PA):
Sign up and claim $300 in bonus bets with this bet-and-get promotion. Here’s how:
- Place a $10 bet per day for three consecutive days.
- After meeting the requirement, you receive $300 in bonus bets to use across various sports markets.
2. Up to $1,000 in No Sweat Bets (Available in AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, and WY):
With this offer, Fanatics Sportsbook provides daily No Sweat Bets for 10 straight days, up to $100 per bet. If your qualifying wager doesn’t win, Fanatics refunds your stake in bonus bets, ensuring you get another shot at winning.
3. 300% Profit Boost Token (Exclusive to New York):
New York bettors can triple their potential winnings with a 300% Profit Boost Token. Simply:
- Wager up to $50 on any college basketball game.
- If your bet wins, the profit is multiplied by 300%, making this an ideal promo for those looking to maximize returns.
College Basketball March Madness Betting Promos: Best 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.
Join Kalshi’s Predictive Market and explore a unique way to engage with March Madness and other real-world events. When you sign up with the Kalshi promo code ACTION and make $100 in trades, you receive a $10 bonus to continue trading on your favorite markets.
Kalshi offers a futures-style trading experience, allowing you to speculate on sports, politics, and global events with a data-driven approach. Whether you’re trading on March Madness outcomes or broader market trends, this platform provides an exciting alternative to traditional betting.
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
Sign up with Underdog Fantasy promo code TOPACTION and receive a 50% deposit match bonus, up to $1,000 in bonus funds. Use your bonus to build lineups featuring top players from any college basketball game and compete for big payouts.
Whether you're crafting a March Madness lineup or testing your skills in daily fantasy contests, this exclusive offer gives you extra value to make the most of every pick.