The BetMGM bonus code TOPACTION is the best March Madness Final Four betting promo, so use TOPACTION today to create a new sportsbook account and take advantage of the $1,500 first bet offer. Sign up now and bet on Michigan vs. Arizona and Illinois vs. UConn, tipping off on Saturday, April 4.
Click below now to claim the BetMGM bonus code TOPACTION for the March matchups today.
Use the BetMGM bonus code TOPACTION to bet on NCAA Tournament odds including futures, sides, totals, and prop bets. This BetMGM sportsbook welcome bonus is available to new users in AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, and WY.
BetMGM Bonus Code TOPACTION: Get $1,500 in Bonus Bets for Final Four Now
Register today with the BetMGM bonus code TOPACTION to claim the $1,500 first bet offer. Place your first bet, and if it loses, get back up to $1,500 in bonus bets to cover the amount of your cash loss. This helps make this BetMGM offer the best March Madness Final Four betting promo.
Let's use Action Network betting expert Ryan Minion's NCAA Tournament futures bet to demonstrate how this sign-up offer works. Suppose I place a $100 first bet on Michigan to Win National Championship (+350):
any of the March matchups
- Action Network Expert Prediction: Michigan to Win National Championship (+350)
- If the bet wins, I earn $350 in profit and get my $100 stake back.
- If the bet loses, I get five $20 bonus bets ($100 in bonus bets total) that expire in seven days.
Keep in mind that bonus bets expire in seven days. If your bonus amount exceeds $50 in value, you get the bonus funds is five equal bonus bet credits.
Other BetMGM Sportsbook Bonus Codes
Instead of the $1,500 first bet promo, there are two additional welcome bonuses available at BetMGM Sportsbook using a BetMGM bonus code. In select states, place a $10+ first bet to get $150 in bonus bets if you win. In most legal sports betting states, claim a 20% deposit match of up to $1,500 in sports bonus. Check out the chart below for more information about these BetMGM Sportsbook promos.
| BetMGM Promo | States Available | BetMGM Sportsbook Bonus Code |
|---|---|---|
| Bet $10, Get $150 in Bonus Bets if You Win | MI, NJ, PA, WV | ACTIONGET |
| Get a 20% First Deposit Match Up to $1,500 in Sports Bonus | AZ, CO, DC, IA, IN, KS, KY, MA, MD, MI, MO, NC, NJ, PA, TN, WV, WY | TOPTAN1500 |
BetMGM Bonus Code Sign-Up Steps: Sunday, March 29, 2026
Follow the steps outlined below to claim your sign-up bonus today with the BetMGM bonus code:
- Click any sign-up module on this page to create a new BetMGM Sportsbook account. Forthe $1,500 first bet offer use TOPACTION, use ACTIONGET for the $150 bet-and-get, or TOPTAN1500 to claim the $1,500 deposit match.
- Once redirected, select your state and click "Register" in the top right corner to begin registration.
- Enter your personal information, including your email address, name, date of birth, phone number, home address, and the last four digits of your SSN. Then, create a user ID and password.
- Accept the BetMGM Sportsbook terms & conditions, set security questions, and confirm your age and eligibility.
- Make a $10+ first deposit using any available banking method.
- Place your first bet via the BetMGM app or site on March Madness Final Four or any other game today.
BetMGM Promos for Sunday, March 29
BetMGM offers a mix of odds boosts and safety net tokens across major markets, giving bettors added value on both tournament action and Opening Day baseball. Whether you're targeting March Madness or early MLB matchups, these promos provide multiple ways to increase potential returns or limit risk.
- March Madness Odds Boost Token: Boost your payout on any eligible college basketball wager during the tournament, letting you capitalize on Final Four action with improved odds on sides, totals, or props.
- BetMGM Court of Legends: BetMGM offers a free-to-play promo where users pick either Haley Cavinder or Hanna Cavinder to win a one-on-one event at the Court of Legends in Las Vegas on April 5, 2026, with winners splitting $2 million in Bonus Bets. Users must opt in, make one selection during the promo period, and if correct, receive a share of non-withdrawable Bonus Bets (min odds -300) that expire in seven days.
- MLB No Sweat Token: Place a bet on any baseball game and get your stake back in bonus bets if it loses, making it a low-risk way to get involved with Opening weekend and early-season matchups.
- Any Sport Odds Boost Token: Apply an odds boost to a wager across any sport on the board, giving you flexibility to target your favorite markets while increasing your potential profit.
BetMGM Bonus Code Terms & Conditions
21+. Gambling problem? Call 1-800-GAMBLER or 1-800-MY-RESET. AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, WY. Call 877-8-HOPENY or text HOPENY (467369) (NY). Call 1-800-327-5050 (MA), 1-800-BETS-OFF (IA), 1-800-981-0023 (PR). Please Gamble Responsibly. Call 1-800-NEXT-STEP (AZ), 1-800-522-4700 (KS, NV), 1-800-BETS-OFF (IA). First Bet Offer for new customers only (if applicable). Subject to eligibility requirements. Bonus bets are non-withdrawable. In partnership with Kansas Crossing Casino and Hotel. This promotional offer is not available in DC, MS, NY, NV, ON, or PR. Visit BetMGM.com for Terms & Conditions.
21+. Gambling problem? Call 1-800-GAMBLER or 1-800-MY-RESET. Offer available in MI, NJ, PA, WV. Please Gamble Responsibly. Subject to eligibility requirements. Bonus bets are non-withdrawable. In partnership with Kansas Crossing Casino and Hotel. This promotional offer is not available in DC, MS, NY, NV, ON, or PR. Visit BetMGM.com for Terms & Conditions.
21+. Gambling problem? Call 1-800-GAMBLER or 1-800-MY-RESET. AZ, CO, DC, IA, IN, KS, KY, MA, MD, MI, MO, NC, NJ, PA, TN, WV, WY. Call 877-8-HOPENY or text HOPENY (467369) (NY). Call 1-800-327-5050 (MA), 1-800-BETS-OFF (IA), 1-800-981-0023 (PR). Please Gamble Responsibly. Call 1-800-NEXT-STEP (AZ), 1-800-522-4700 (KS, NV), 1-800-BETS-OFF (IA). Subject to eligibility requirements. Bonus bets are non-withdrawable. In partnership with Kansas Crossing Casino and Hotel. This promotional offer is not available in DC, MS, NY, NV, ON, or PR. Visit BetMGM.com for Terms & Conditions.
