With the second day of the Round of 64 tipping off, there’s still time to grab nearly $4,000 in March Madness betting promos before another full day of college hoops. Marquee matchups like Colorado State vs. Memphis and North Carolina vs. Ole Miss highlight tonight’s schedule, making now the perfect time to lock in exclusive sportsbook bonuses.
This is one of the most thrilling stretches of the year for college basketball fans as teams fight to stay alive in the race for a national championship. Whether you’re backing the top seeds playing today like Duke, Florida, or Michigan State, or hoping to cash in on a Cinderella run from a double-digit seed, these March Madness betting promos give you access to bonus bets, deposit matches, and first bet insurance to maximize your potential return.
After claiming your bonuses, check out the latest NCAAB odds and start building your bankroll with picks for today's games, tomorrow’s Round of 32 matchups, and futures for the Sweet 16 and beyond. Betting on March Madness futures is a great way to find value before the bracket narrows.
Sign up now with the best March Madness betting promos and give your bankroll a major boost before tip-off today.
| 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 |
| Caesars Sportsbook | Bet & Get $150 in Bonus Bets or Get 10 100% Profit Boost Tokens | ACTION4BG1 |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win or $1,600 Deposit Match | ACTIONGET |
| 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
Sign up now to claim the top March Madness betting promos and unlock thousands in bonus value as the second day of the Round of 64 tips off. With NCAA Tournament action in full swing, this is the perfect time to take advantage of sportsbook sign-up offers and place your bets on every March Madness game.
1. bet365
- bet365 Bonus Code: TOPACTION
- bet365 Promos: $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, IL, IN, KY, LA, NC, NJ, OH, PA, TN, VA
Before the second slate of the Round of 64 gets underway, bet365 Sportsbook is offering some of the top March Madness betting promos on the market. New users can choose between a $1,000 First Bet Safety Net or a $150 bet-and-get bonus in AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, TN, and VA. Just sign up with the bet365 bonus code TOPACTION to claim these limited-time offers ahead of today's NCAA Tournament matchups.
If you go with the First Bet Safety Net, place a qualifying wager at -500 odds or longer. If your bet loses, you get your full stake refunded in bonus bets—up to $1,000.
For example, say you place a $1,000 first bet on North Carolina -1.5 (-110) against Ole Miss. If the Tar Heels cover, you take home $1,909. If they don’t, bet365 refunds your stake in bonus bets to use on future wagers.
Prefer a lower-risk option? Bet just $5 on any eligible market, and you receive $150 in bonus bets—win or lose. In Pennsylvania, this offer also includes 50 free spins for bet365 Casino.
There’s no better time to jump in—Day 2 of the Round of 64 is loaded with high-stakes matchups, and these bet365 sign-up offers give you the edge.
2. 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
The Round of 64 continues today and Caesars Sportsbook is giving new users two exciting March Madness betting promos to add extra value to their bets. Choose between a $150 bet-and-get bonus or 10 Profit Boost Tokens—perfect for making the most of your March Madness wagers and more.
Sign up with Caesars Sportsbook promo codeACTION4BG1 and place a $1 first bet to unlock $150 in bonus bets. To activate this offer, your initial bet must win.
If it does, Caesars Sportsbook credits your account with six $25 bonus bets, which can be used on any eligible market, including tonight’s NCAA Tournament matchups. Bonus bets expire after 30 days, so make sure to use them while the action is hot.
If you’d rather double your potential winnings, sign up with Caesars Sportsbook promo code ACTION4DYW to receive 10 Profit Boost Tokens after placing just a $1 first bet.
Here’s how to unlock and put your Profit Boost Tokens into action:
- Place your $1 first wager
- Instantly receive 10 Profit Boost Tokens
- Use them on bets up to $25 across various sports
- Double your profits if the bet wins
These boosts are a great way to maximize value across today’s March Madness games, as well as NBA, NHL, MLB, and more.
3. 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
With the second day of the Round of 64 tips off, BetMGM Sportsbook is rolling out three March Madness betting promos, giving new users multiple ways to boost their bankroll. Whether you're looking for bonus bets, a deposit match, or security for your first wager, there’s a BetMGM bonus code tailored to your betting style.
Bet $10, Win $150 in Bonus Bets (Available in CO, MI, NJ, PA, and WV)
Sign up with BetMGM bonus code ACTIONGET, place a $10+ bet on any market, and if it wins, you receive $150 in bonus bets. Just note: your bet must win to unlock the bonus.
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)
Use BetMGM bonus code TOPTAN1600 when you register and get a 20% deposit match up to $1,600. To unlock the full bonus, deposit $8,000 or more, but any deposit of $10 or more qualifies for bonus funds.
First Bet Safety Net – Up to $1,500 in Bonus Bets (Available in AZ, DC, IA, IL, IN, LA, KS, KY, MA, MD, NC, OH, TN, VA, and WY)
Prefer some peace of mind? Use BetMGM bonus code TOPACTION, and if your first wager loses, you receive your stake back in bonus bets up to $1,500, split into five equal parts.
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
As the second day of the Round of 64 tips off, Fanatics Sportsbook is offering three unique March Madness betting promos, letting new users choose the bonus that fits their style and state. Whether you're looking for a bet-and-get deal, No Sweat Bets, or a massive profit boost, there's a Fanatics Sportsbook promo to give you extra value during the NCAA Tournament.
$300 Bet-and-Get Bonus (Available in AZ, CO, CT, IN, LA, MA, MD, MI, NJ, PA, TN, VA, WV)
This fan-favorite offer gives you $300 in bonus bets after three days of simple wagering:
- Place a $10+ bet each day for three consecutive days
- Receive $100 in bonus bets after each day, totaling $300 to use across any market
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, WY)
Worried about your first few bets not hitting? Fanatics covers 10 days of No Sweat Bets, refunding up to $100 per day if your wager loses. That’s up to $1,000 in bonus bets, giving you multiple chances to win even when things don’t go your way.
300% Profit Boost Token (New York Exclusive)
New York bettors can triple their profits on any March Madness game today with a 300% Profit Boost Token:
- Wager up to $50 on any eligible college basketball market
- If your bet wins, Fanatics triples your profit, giving you max value on a single play
College Basketball March Madness Betting Promos: 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.
Kalshi lets you engage with March Madness in a unique way—by trading on outcomes instead of placing traditional bets. This futures-style platform allows users to speculate on everything from game results to broader economic or political trends.
How to Claim Your Kalshi Welcome Bonus:
- Sign up using Kalshi promo code ACTION
- Make $100 in trades across any market
- Get a $10 bonus to continue exploring predictive trading
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
Get started with Underdog Fantasy using Underdog Fantasy promo code TOPACTION and receive a 50% deposit match bonus (up to $1,000) to build lineups around your favorite college basketball players.
Whether you're entering a March Madness DFS contest or testing your strategy during today’s games, this promo gives you more firepower to chase big payouts.