March Madness Betting Promos: $7,770 in Bonuses for Sweet 16, Futures Markets

Now is a prime time to sign up with March Madness betting promos while we wait for the Sweet 16 round in the NCAA Tournament to commence. Sign up with the best college basketball betting promos to unlock up to $7,770 in bonuses today, Monday, March 23, 2026.

All the March Madness betting promos below come from the best sportsbooks and betting sites in North America. Tap on any of the modules listed out below to register at bet365, BetMGM, FanDuel, and other sportsbook promos for March Madness.

Unlock Nearly $8,000 in March Madness Betting Promos Now

Capitalize on the March Madness betting promos in the chart below to trigger up to $7,770 in bonus funds for the Sweet 16.

Sweet 16 Schedule

Wager on college basketball odds from any Sweet 16 game below once you claim the best sportsbook promos for March Madness:

Thursday, March 26

• (11) Texas vs. (2) Purdue – 7:10 p.m. ET on CBS
• (9) Iowa vs. (4) Nebraska – 7:30 p.m. ET on TBS/truTV
• (4) Arkansas vs. (1) Arizona – 9:45 p.m. ET on CBS
• (3) Illinois vs. (2) Houston – 10:05 p.m. ET on TBS/truTV

Friday, March 27

•  (5) St. John's vs. (1) Duke –  7:10 p.m. ET on CBS
• (4) Alabama vs. (1) Michigan – 7:35 p.m. ET on TBS/truTV
• (3) Michigan State vs. (2) UConn – 9:45 p.m. ET on CBS
• (6) Tennessee vs. (2) Iowa State – 10:10 p.m. ET on TBS/truTV

March Madness Futures Odds

Below are the most updated March Madness futures odds. These are the ten leaders in the clubhouse to win the NCAA Tournament, according to bet365 Sportsbook odds accurate as of publish time:

March Madness Betting Promos for Sweet 16 Round

Sign up with any of the March Madness betting promos below to wager on the Sweet 16 in the NCAA Tournament.

1. Fanatics Sportsbook

Our Action Network Fanatics Sportsbook promo code ACTION is how I suggest you start to unlock March Madness betting promos. Read the terms and conditions for each of these best sportsbook promos for March Madness carefully, as minimum odds and wagering requirements differ with each offer. Use FanCash as bonus bets or to purchase merchandise and apparel.

• Fanatics Sportsbook Promo Code ACTION (Bet $5, Get $200 in FanCash Instantly)
  • Fanatics Sportsbook States Available: AZ, CO, CT, DC, IA, IN, KS, KY, LA, MA, MD, MI, MO, NJ, OH, PA, VA, VT, WV, WY

• Fanatics Sportsbook Promo Code ACTION ($1,000 Bet Match Over 10 Days)
  • Fanatics Sportsbook States Available: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, MO, NC, NJ, OH, PA, TN, VA, VT, WV, WY

• Fanatics Sportsbook Promo Code ACTION (Bet $5, Get $400 in FanCash)
  • Fanatics Sportsbook States Available: NC, TN

• Fanatics Sportsbook NY Promo Code ACTIONNY ($250 No Sweat Bets Over 10 Days)
  • Fanatics Sportsbook States Available: New York

• Fanatics Sportsbook NY Promo Code ACTIONNY (Daily 100% Profit Boost Token Over Five Days)
  • Fanatics Sportsbook States Available: Illinois & New York

2. BetMGM Sportsbook

Enter the BetMGM bonus code that corresponds to one of the March Madness betting promos below to sign up today. Bet $10 and get $150 in bonus bets if your bet wins in MI, NJ, PA, or WV. Nationally, choose a $1,500 first bet on the house, or 20% deposit match offer.

• BetMGM Bonus Code ACTIONGET (Bet $10, Get $150 in Bonus Bets If You Win)
  • BetMGM States Available: MI, NJ, PA, WV

• BetMGM Bonus Code TOPACTION ($1,500 First Bet On the House)
  • BetMGM States Available: AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, WY

• BetMGM Bonus Code TOPTAN1500 (20% Deposit Match, Up to $1,500 Sports Bonus Funds)
  • BetMGM States Available: AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, MO, NJ, NC, PA, TN, WV, WY

3. DraftKings Sportsbook

Register with the DraftKings promo code to take home one of the best March Madness betting promos from one of the most popular sports betting apps in North America. Bet $5 on -500 odds or longer, get $200 in bonus bets when you win, and earn a 100% Profit Boost Token to use on a tournament winner futures market.

• DraftKings Promo Code (Bet $5, Get $200 in Bonus Bets If You Win)
  • DraftKings States Available: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, MO, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY

4. FanDuel Sportsbook

You won't find more value out of any of these March Madness betting promos than what the  FanDuel promo code provides. Receive up to $3,000 in bonus bets back over 10 days with the primary FanDuel sign-up bonus. Don't forget the FanDuel Arkansas promo code is now available, so sign up to wager on the Arkansas vs. Arizona Sweet 16 game.

• FanDuel Promo Code (Get $300 Back in Bonus Bets Every Day For 10 Days)
  • FanDuel States Available: AZ, CO, CT, DC, IA,, IL, IN, KS, KY, LA, MA, MD, MI, MO, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY

• FanDuel Promo Code (Bet and Get Up to $1,000 in Bonus Bets)
  • FanDuel States Available: IN, VA

• FanDuel Arkansas Promo Code (Bet $5, Get $300 Instantly in Bonus Bets)
  • FanDuel States Available: Arkansas

5. bet365 Sportsbook

In order to unlock one of the March Madness betting promos below through the bet365 bonus codeTOPACTION, you must tap one of the modules or linked pieces of text. No matter which bet365 sign-up bonus you pick, submit your first bet on -500 odds or longer in the Sweet 16.

• bet365 Bonus Code TOPACTION (Bet $5, Get $365 in Bonus Bets, Win or Lose)
  • bet365 States Available: AZ, CO, IA, IL, IN, KS, KY, LA, MD, MO, NC, NJ, OH, PA, TN, VA

• bet365 Bonus Code TOPACTION ($1,000 First Bet Safety Net)
  • bet365 States Available: AZ, CO, IA, IL, IN, KS, KY, LA, NC, OH, TN, VA

• bet365 PA Bonus Code TOPACTION (Bet $5, Get $365 in Bonus Bets, Win or Lose+ 50 Casino Spins)
  • bet365 States Available: Pennsylvania, New Jersey

• bet365 IL Bonus Code TOPACTION (Bet $10, Get $150 in Bonus Bets, Win or Lose)
  • bet365 States Available: Illinois

6. Hard Rock Bet

Michigan and New Jersey bettors get access to one of the best March Madness betting promos that isn't available nationwide. Claim the Hard Rock Bet promo code from Action Network to trigger 10 100% Profit Boost Tokens. Use each token to double your potential winnings on qualifying bets.

• Hard Rock Bet Promo Code (10 100% Profit Boost Tokens)
  • Hard Rock Bet States Available: Michigan & New Jersey

7. Caesars Sportsbook

Make sure you claim 10 100% Profit Boost Tokens from the Caesars Sportsbook promo code ACTION4DYW today. Similarly to Hard Rock Bet above, this is one of the premiere March Madness betting promos because of how the Profit Boost Tokens increase your bankroll by doubling any potential winnings.

• Caesars Sportsbook Promo Code ACTION4DYW (Bet $1, Get Double Your Winnings on Next 10 Wagers)
  • Caesars Sportsbook States Available: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MO, MD, ME, MI, NC, NJ, NY, OH, ON, PA, TN, VA, WV, WY

8. theScore Bet

Rounding out our Action Network list of March Madness betting promos to sign up with is theScore Bet promo code ACTNEWS. Unlock a $1,000 or $150 new player offer depending on your state to fund your Sweet 16 wagers.

• theScore Bet Promo Code ACTNEWS ($1,000 First Bet Reset)
  • theScore Bet States Available: AZ, CO, IA, IL, IN, KS, KY, LA, MA, MD, MO, NC, OH, TN, VA

• theScore Bet Promo Code ACTNEWS (Bet $10, Get $100 in Bonus Bets If You Win)
  • theScore Bet States Available: MI, NJ, PA, WV

Use Kalshi and Underdog for Different Ways to Predict Sweet 16

Kalshi and Underdog are two of the best alternatives to the March Madness betting promos above, whether they're unavailable in your state, or if you want a different way to play. Use Kalshi to predict real-world outcomes on implied probabilities, or play Underdog DFS to make player picks.

1. Kalshi

Use the Kalshi promo code ACTION and trade $10 on March Madness prediction markets to pocket $10 in bonus cash.

• Kalshi Promo Code ACTION (Trade $10, Get a $10 Bonus)
  • Kalshi States Available: AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NY, NC, NV, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC

2. Underdog (DFS)

Register with the Underdog promo code TOPACTION and submit a $5+ lineup of college basketball DFS picks to net $50 in fantasy bonus entries.

• Underdog Promo Code TOPACTION ($50 Fantasy Bonus Entries): Play $5 on CBB picks to unlock $50 in fantasy bonus entries.
  • Underdog States Available: AL, AK, AR, CA, DC, FL, GA, IL, IN, KS, ME, MS, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, VT, VA, UT, WI, WY