March Madness BetMGM Bonus Code: Score Up to $1,500 in Bonus Bets for the NCAA Championship Game

The stage is set for the national championship game, where No. 1 seeds Houston and Florida battle for the ultimate prize.
Before the tournament ends, new bettors can claim up to $1,500 in bonus bets with the BetMGM bonus code SI1500. If you're in CO, MI, NJ, PA, or WV, wager $10 to win $150 in bonus bets.
- Use BetMGM bonus code SI1500 for up to $1,500 in bonus bets - CLAIM NOW
- Bet $10 to get a $150 bonus at BetMGM - CLAIM NOW
What you need to know about the BetMGM March Madness offer
Here are the key terms and conditions you need to know before claiming this BetMGM bonus code for the national championship.
- You must enter promo code SI1500 when signing up and deposit a minimum of $10.
- If your first bet turns out to be a loss, you’ll receive the full stake back as bonus bets, up to $1,500.
- For bets under $50, you’ll get a single bonus bet matching the stake.
- For bets of $50 or more, you are refunded as five separate bonus bets. Each one will be worth 20% of the original bet.
- You must use your bonus bets in seven days, or they will expire.
Use BetMGM bonus code SI1500 for up to $1,500 in bonus bets - CLAIM NOW
The NCAA championship game is the pinnacle of March Madness, and BetMGM lets you get in on the action with extra confidence as you place your final bets on the tournament.
This BetMGM offer is available to first-time customers in the following states: AZ, DC, IA, IL, IN, KS, KY, LA, MA, MD, MS, NC, OH, TN, VA, WY. This offer is not available to bettors in NV, NY, or Ontario, Canada.
Bet $10, get $150 in bonus bets in CO, MI, NJ, PA, and WV
New players in CO, MI, NJ, PA, and WV can cash in on an exclusive BetMGM March Madness promo. Bet $10, and if it wins, you’ll score $150 in bonus bets — on top of your regular winnings.
Here’s how to claim the BetMGM bonus code:
- Register using code SI1500 and deposit at least $10.
- Place a qualifying $10+ wager within seven days of signing up.
- If your bet hits, BetMGM will reward you with $150 in bonus bets.
- Bonus bets expire after seven days and cannot be withdrawn.
Bet $10 to get a $150 bonus at BetMGM - CLAIM NOW
More BetMGM offers for all users
With the national championship here, BetMGM is delivering exclusive promos to elevate your betting experience. See what’s on offer today:
How to claim $1,500 in bonus bets from BetMGM
Unlocking your BetMGM bonus code takes just a few steps:
- Sign up: Click any BetMGM link on this page. Make sure to enter promo code SI1500 during registration.
- Deposit: Add a minimum of $10 to your account to activate the bonus code.
- Place a bet: Wager on any sports market. If your bet doesn’t hit, you’ll get the entire stake back as bonus bets, up to $1,500.
- Use your bonus: A losing bet under $50 earns one bonus bet, while wagers of $50 or more return five bonus bets, each worth 20% of your stake.
Can you bet on March Madness in the US?
March Madness betting is widely legal, but some states have specific restrictions. Check the table below to see your state’s college sports betting rules.

Compare March Madness betting promos
Get the most out of your national championship betting experience with even more welcome bonuses that are still available. Don’t miss out on these offers as March Madness reaches its epic finale.
BetMGM | Caesars Sportsbook | FanDuel | DraftKings | |
|---|---|---|---|---|
March Madness betting promo | ||||
Promo code | SI1500 | SICZRDYW | No code required | No code required |
Bonus form | 1 or 5 bonus bets | 10 100% profit boost tokens | $200 in bonus bets | Six $25 bonus bets |
Minimum deposit | $10 | $10 | $5 | $5 |
Minimum bet | N/A | $1 | $5 | $5 |
Days to use bonus | 7 days | 14 days | 7 days | 7 days |
Odds refresh periodically and are subject to change.
If you or someone you know has a gambling problem and wants help, call 1-800-GAMBLER.

Brian Giuffra is the VP of Betting Content at Minute Media and has been with the company since 2016. He's a fan of the Knicks, Giants, wine and bourbon, usually consuming them in that order.
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