March Madness Sports Betting Forecast: $3.1 Billion in Legal Wagers Expected Alongside Billions More in Illegal Bets

The upcoming March Madness sports betting forecast indicates an astonishing $3.1 billion in legal wagers. As the much-anticipated March Madness college basketball tournaments prepare to commence next week, the landscape of sports betting is expected to reach unprecedented heights. Experts predict an incredible $3.1 billion in legal wagers will be placed on these thrilling games, signaling a massive surge in mainstream interest. However, it is essential to note that an even larger sum will likely be wagered through illegal channels, highlighting the complex scale of the current betting market.

Projected Legal Betting Growth

This year’s tournaments will kick off in 2025, and the American Gaming Association (AGA) estimates that legal sportsbooks will see an increase of $400 million in bets compared to the previous year. This impressive figure notably surpasses the $1.4 billion wagered during the last month’s Super Bowl, making March Madness one of the hottest betting events on the calendar.

Current Landscape of Sports Betting

As of March 2025, the number of states allowing legal sports betting remains at 38 states, in addition to Washington, DC. Unfortunately, the expansion of legal sports betting has stagnated since March 2024, with states like Missouri still not launching their markets even after voters approved sports gambling. This steady presence underscores a growing trust in legal wagering among the public, which the AGA attributes to the projected increase in bets this season.

Heightened Excitement in College Basketball

“March Madness is a thrilling time in American sports, igniting passion among fans for both the men’s and women’s NCAA tournaments,” stated Jay Maloney, AGA’s senior vice president of strategic communications. With a robust legal betting framework in place, more fans than ever are able to participate in legal and responsible betting.

Behind the Numbers

• Projected Legal Bets: $3.1 billion
• Growth from Last Year: $400 million
• Illegal Wagering Estimated: Over $12 billion (based on 2023 data)
• Number of Legal Sports Betting States: 38, plus Washington, DC

While legal sportsbooks prepare to welcome bettors, the amount wagered through offshore sportsbooks and local bookies will be in the billions. Betting pools among friends and colleagues for bracket challenges will also contribute to this sizable figure.

Current Betting Favorites

As the brackets finalize on Selection Sunday at 6 PM EST, current favorites for the men’s tournament include:

• Duke: +320 (implied odds of 23.8%)
• Auburn: +350
• Florida: +600
• Houston: +800
• Alabama: +1200

Defending champion UConn is sitting at +6000, adding an element of intrigue for bettors.

On the women’s side, the South Carolina Gamecocks lead the pack at +260, while Connecticut follows closely at +280, fueled by the return of star player Paige Bueckers and a top recruit, Sarah Strong.

Promoting Responsible Sports Betting

The AGA is committed to encouraging responsible gambling practices through its program titled, “Have A Game Plan.” This initiative prompts bettors to establish and adhere to a budget, keep the experience fun and social, understand betting odds, and place bets exclusively with legal sportsbooks.

One of the program’s newest principles, “Keep Your Cool,” was introduced to remind bettors to maintain respect during games, avoiding any harassment towards players, coaches, or officials regardless of a bet’s outcome.

Summary

As March Madness approaches, the legal betting scene is vibrant and growing, reflecting a new era of trust in sports wagering. With a whopping $3.1 billion expected in legal bets and billions more through illegal channels, the excitement surrounding the NCAA tournaments is at an all-time high. While thrilling matchups and potential profits beckon, responsible gambling remains a priority for both organizations and bettors alike.