March Madness reaches its peak with the Final Four set for Saturday, and there’s still time to grab nearly $4,000 in Final Four betting promos before Florida vs. Auburn (6:09 p.m. ET) and Houston vs. Duke (8:49 p.m. ET) tip off on CBS. These are two of the most anticipated matchups of the tournament, making now the perfect time to secure welcome offers from the best sportsbooks.
With a spot in the National Championship on the line, bettors can take advantage of some of the best sign-up promos of the year. Whether you're backing favorites like Florida and Duke or hoping for an upset with Auburn or Houston, these Final Four March Madness betting promos give new users access to bonus bets, deposit matches, and first bet protection to boost their Final Four picks.
Once you’ve claimed your sign-up bonuses, be sure to check the latest Final Four odds and start building your Final Four bet slips. There’s no better time to get in on the action.
Scroll through the chart below to find the best Final Four betting promos and choose the offer that best fits your style before Saturday’s games tip off.
| Best NCAAB Sportsbooks | Final Four Betting Promos for March Madness | Sign-Up Link |
|---|---|---|
| bet365 | $150 Bet-and-Get or $1,000 First Bet Safety Net | TOPACTION |
| Fanatics Sportsbook | $300 Bet-and-Get Promo or $1,000 in No Sweat Bets | Click Here |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win | ACTIONGET |
| Caesars Sportsbook | Bet $1, Get 10 100% Profit Boost Tokens | ACTION4DYW |
March Madness Final Four Betting Promos: Best Sportsbook Promos for NCAA Tournament
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
bet365 Sportsbook is the go-to spot for some of the top Final Four betting promos on the market. New users in AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, TN, and VA can choose between a $1,000 First Bet Safety Net or a $150 bet-and-get bonus. Just sign up with the bet365 bonus code TOPACTION to claim one of these limited-time offers ahead of Saturday's Final Four matchups.
If you opt for the First Bet Safety Net, place a qualifying wager at -500 odds or longer. If your bet loses, you receive your entire stake back in bonus bets—up to $1,000.
Let's say you place a $1,000 first bet on Auburn +2.5 (-110) vs. Florida, and they cover; you win $1,909. If the Tigers fall short, bet365 Sportsbook refunds your full stake in bonus bets to use on future wagers.
However, with bet365 Sportsbook, you can get started with just $5. Sign up with the bet365 bonus code TOPACTION and bet just $5 on any eligible market to get $150 in bonus bets—win or lose. In Pennsylvania, this promo also includes 50 spins for bet365 Casino as an additional perk.
2. 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 also offering a three-pack of Final Four betting promos for the Elite Eight, giving new users the flexibility to pick the Fanatics Sportsbook promo that fits their style and location. Whether you're eyeing a bet-and-get offer, No Sweat Bets, or a 300% Profit Boost, there’s a Fanatics Sportsbook promo designed to boost your bets for the NCAA Tournament.
$300 Bet-and-Get Bonus (Available in AZ, CO, CT, IN, LA, MA, MD, MI, NJ, PA, TN, VA, WV):
This popular promo gives you $300 in bonus bets over three days:
- Place a $10+ bet each day for three consecutive days
- Receive $100 in bonus bets after each day, totaling $300
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):
Fanatics Sportsbook has your back with 10 days of No Sweat Bets. If your bet loses, you get up to $100 back in bonus bets each day—up to $1,000 total—so you can keep betting even if you hit a rough patch.
300% Profit Boost Token:
Bettors in New York can triple their payout on Saturday's Final Four action with a 300% Profit Boost Token:
- Bet up to $50 on any eligible college basketball market
- If your bet wins, Fanatics Sportsbook triples your profit, giving you exponential value on a single wager
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
Your Final Four betting card should be built at BetMGM Sportsbook, as they have three Final Fourbetting promos to help new users boost their bankrolls. Whether you’re after bonus bets, a deposit match, or a first bet offer, there’s a BetMGM bonus code for you.
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 remember—your first wager 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):
Register with BetMGM bonus code TOPTAN1600 to get a 20% deposit match up to $1,600. To unlock the full amount, deposit $8,000 or more—but any deposit of $10+ qualifies for bonus funds.
First Bet Offer – 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):
If you're looking to make a large first bet, sign up with BetMGM bonus code TOPACTION, and if your first wager loses, you get your stake back in bonus bets up to $1,500, divided into five equal parts.
4. Caesars Sportsbook
- 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
How does doubling your winnings sound? If that sounds great, then you should sign up to get one of the best Final Four betting promos with the Caesars Sportsbook promo code ACTION4DYW to receive 10 Profit Boost Tokens after placing just a $1 first bet.
Here’s how to pocket Profit Boost Tokens and use them on the Final Four:
- Place a $1 first wager
- Instantly receive 10 Profit Boost Tokens
- Use them on bets up to $25 across various sports
- Double your profits on any winning bet
Profit Boost Tokens expire 14 days after they are credited to your account.
These Profit Boost Tokens are a great way to add value to your Final Four bets—as well as your plays in the NBA, NHL, MLB, and more.
Alternate March Madness Final Four Betting Promos
With the Final Four tipping off Saturday, you don’t need to stick to traditional sportsbooks to get in on the action. Kalshi and Underdog Fantasy are offering unique, rewarding ways to engage with March Madness—whether you're into predictive markets or building DFS lineups with top college basketball talent.
1. Kalshi Predictive Market
- Kalshi Promo Code: ACTION
- Kalshi Welcome Offer: Make $100 in Trades, Get $10 Sign-Up Bonus
- Kalshi States Available: 47 States + Washington D.C. (Not available in New Jersey, Nevada, and Ohio)
Kalshi gives you a new way to experience the Final Four by letting you trade on outcomes instead of placing standard bets. This futures-style platform lets you speculate on everything from tournament results to economic and political events.
How to Claim Your Kalshi Bonus:
- Sign up using the Kalshi promo code ACTION
- Make $100 in trades across any market
- Receive a $10 bonus to continue trading and exploring
Perfect for fans looking to combine their love of March Madness with data-driven predictions.
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
Jump into Daily Fantasy Sports with the Underdog Fantasy promo code TOPACTION to receive a 50% deposit match bonus up to $1,000. Build DFS lineups featuring your favorite players from Saturday's Final Four matchups.
Whether you're entering a March Madness DFS contest or trying out a new pick'em lineup strategy, this bonus gives you extra flexibility and more chances to win big.