The Best March Madness Betting Sites: NCAA Tournament 2026

March Madness has been one of the most-wagered-on events in the US, well before the spread of online sports betting. The 68-team field provides bettors with a massive slate of games that always features some massive underdogs scoring surprise wins. That means big payouts for some bettors, but only if they’re using the best March Madness betting sites for their wagers.

Over 30 states now have legal online sports betting markets, many of which offer a wide selection of sportsbooks. While new or casual bettors may believe these platforms are essentially the same, that belief can end up costing them money.

Below, we’ll be sharing our best March Madness betting sites and apps for this year’s edition of March Madness. We’ll share why we chose each operator to help you determine which will be the best fit.

Top March Madness Betting Websites in the US

While there are many sportsbooks available in the US, eight stand out above the rest. These platforms offer competitive pricing and are available in most markets. Below are our rankings of the top March Madness betting websites ahead of the tip-off for this year’s tournament.

1. BetMGM

BetMGM has had large retail sportsbooks in the US long before PASPA was overturned, giving them far more experience than the top two names on our list. While the platform isn’t as well-liked as other top sportsbooks, BetMGM makes up for it with one of the best loyalty programs in the industry. Bettors can earn bonus bets, concert tickets, and even free vacations. Right now, new users can sign up with the BetMGM bonus code WSNSPORTS to claim up to $1,500 back in Bonus Bets if their first tournament wager loses. This safety net makes it an excellent option for taking a bigger swing on a March Madness underdog.

Bettors can use the BetMGM platform in the following states: AZ, CO, IL, IN, IA, KS, KY, LA, MD, MA, MI, MO, MS, NV, NJ, NY, NC, OH, PA, PR, TN, VA, DC, WV, and WY.

» We share more details in our BetMGM Sportsbook review.

⭐ WSN rating: 4.5/5
💰 Sign up offer: Get Up to $1,500 in Bonus Bets
🤩 Promo Code: WSNSPORTS

Claim BetMGM Bonus Code

2. FanDuel

FanDuel Sportsbook has become the biggest name in the industry, and for good reason. Both the mobile app and the web-based platform are among the best-reviewed, with intuitive designs that make them easy to use regardless of a bettor’s experience level. Add in the sportsbook’s impressive promotions and competitive odds, and you can see why it's America’s favorite sportsbook. Right now, new customers can claim a massive March Madness welcome offer that provides up to $300 back in Bonus Bets every day for their first 10 days. This daily No-Sweat Token format gives you a fantastic safety net to navigate the unpredictability of the tournament.

FanDuel Sportsbook’s mobile app is currently available in the following states: AZ, CO, DC, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MS, NJ, NY, NV, NC, OH, PA, TN, VA, WV, WY, and Puerto Rico.

» Find out more with our FanDuel Sportsbook review.

⭐ WSN rating: 4.5/5
💰 Sign up offer: Bet $5, Get $150 in Bonus Bets
🤩 Promo Code: No Promo Code Required

Claim Your Bonus at FanDuel

3. Caesars Sportsbook

If you want Las Vegas-style sports betting in the palm of your hand, Caesars Sportsbook is a fantastic option. The app captures the feel of its famous retail sportsbook on the Strip and offers some of the best live-streaming options in the industry. While its standard promotions are straightforward, Caesars makes up for it with a loyalty program that makes you feel like a Las Vegas high-roller. To tip off the tournament, new users can enter the Caesars Sportsbook promo code WSNDYW to bet just $1 and instantly unlock ten 100% Profit Boost Tokens. This unique offer gives you ten guaranteed opportunities to double your winnings on different March Madness games, regardless of how your first wager settles.

You can use Caesars Sportsbook in the following states: AZ, CO, DC, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MS, NJ, NY, NV, NC, OH, PA, TN, VA, WV, WY, and Puerto Rico.

» Find out more with our Caesars Sportsbook review.

⭐ WSN rating: 4.5/5
💰 Sign up offer: Bet $1, Double Your Winnings 10x
🤩 Promo Code: WSNDYW

Claim Caesars Bonus Code

4. Hard Rock Bet

While many Americans may still associate Hard Rock with its chain of restaurants, its sportsbook is among the best available. The app features a stylish design that appeals to the eye while making navigation easy. The sportsbook also offers a unique Flex Parlay option, which allows bettors to cash out parlays before they are completed. To celebrate March Madness, Hard Rock Bet is currently offering new users ten 100% Profit Boost Tokens just for signing up and making a qualifying deposit. This generous Hard Rock Bet promo gives you ten separate opportunities to double your cash winnings on different tournament matchups, pairing perfectly with their customizable parlay features.

One drawback is that Hard Rock Bet is only available in the following markets: AZ, FL, IL, NJ, TN, IN, OH, VA, and CO.

» Find out more with our Hard Rock Bet review.

⭐ WSN rating: 4/5
💰 Sign up offer: Bet $5, Get $150 if You Win
🤩 Promo Code: No Promo Code Required

Claim the Welcome Offer at Hard Rock Bet

5. BetRivers

This Chicago-based sportsbook is one of the best-kept secrets in the US sports betting industry. While the platform lacks the flash of the others on this list, BetRivers Sportsbook offers some of the best odds and promotions, including for existing bettors. To tip off the tournament, new users can currently claim a 2nd Chance Bet worth up to $500 depending on their state. If your first March Madness wager happens to lose, BetRivers will refund your stake as a bonus bet. If you are looking for good pricing and an intuitive mobile app for betting on the big dance, this is an excellent option.

BetRivers Sportsbook is available in the following states: AZ, CO, IL, IN, IA, LA, MD, MI, NJ, NY, OH, PA, VA, and WV.

» Get more details in our BetRivers Sportsbook review.

⭐ WSN rating: 4.2/5
💰 Sign up offer: $500 Bonus Bet
🤩 Promo Code: No Promo Code Required

Join BetRivers Today and Claim Your Bonus

6. Borgata

Borgata is better known for its casino and poker platforms, but it also offers a small mobile sportsbook. While it isn’t as well developed as some others on our list, bettors who use Borgata can earn far more in bonuses. Some of those can be used on Borgata’s online casino, making it a fantastic one-stop shop for gamblers looking to play table games and bet on sports. If you want to get in on the March Madness action, new users can currently claim a straightforward Bet $20, Get $100 in Bonus Bets welcome offer. This promo gives you a guaranteed $100 in bonus bets to use on various tournament matchups, regardless of whether your initial qualifying wager wins or loses.

Unfortunately, Borgata Sportsbook is only available to bettors in New Jersey. 

» Read our Borgata Sportsbook review for more info.

⭐ WSN rating: 4.2/5
💰 Sign up offer: Bet $20, Get $100 Instantly
🤩 Promo Code: No Promo Code Required

Join Borgata Today and Claim Your Bonus

7. Fanatics

Fanatics has been one of the biggest success stories in the US sports betting industry, quickly establishing itself as the third most-popular platform in most markets. It offers a wide range of betting options and plenty of opportunities to claim bonuses. What makes Fanatics so unique is its rewards program, which allows bettors to earn FanCash. That can be used to purchase officially licensed gear from your favorite teams. To celebrate March Madness, Fanatics is currently offering new users up to $1,000 in FanCash or an instant $200 bonus, depending on your state. This flexible welcome offer gives you a fantastic starting point for betting on the tournament, and any FanCash you earn can easily be converted into bonus bets or used to grab a jersey for your favorite college squad.

Fanatics is available in the following states: AZ, CO, CT, IL, IN, IA, KS, KY, LA, MD, MA, MI, MO, NJ, NY, NC, OH, PA, TN, VT, VA, D.C., WV, and WY.

» More info can be found in our Fanatics Sportsbook review.

⭐ WSN rating: 4.1/5
💰 Sign up offer: Bet $5 Get $200 FanCash Immediately
🤩 Promo Code: No Promo Code Required

Sign Up for Fanatics and Claim the Welcome Offer

Prediction Markets: Alternative to Popular March Madness Betting Sites

If you aren’t able to access online sports betting in your state, fear not! Sports prediction markets are now available in all 50 US states because they have avoided being labeled as “gambling.” Last year saw a handful of operators offer prediction markets for March Madness, but this year will feature a far more robust industry.

Below is a list of our favorite sports predictions market platforms, along with what makes them stand out. 

1. Kalshi

Kalshi has blazed the trail for sports contracts in the US, making it one of the most trustworthy and reliable names in the industry. Kalshi’s platform is cutting-edge and visually appealing. Kalshi’s platform is cutting-edge, visually appealing, and operates as a fully regulated financial exchange where bettors trade using regular US dollars.

To get in on the March Madness action, new users can currently claim a straightforward welcome offer that unlocks a guaranteed $10 bonus after making 100 in total contract trades. While Kalshi operates in all 50 states, pending lawsuits could result in service interruptions. Be sure to check back here for the latest news on the prediction industry.

» Find out more with our Kalshi Prediction Market review.

⭐ WSN rating: 4.3/5
💰 Sign up offer: Get $10 When You Trade 100 Contracts
🤩 Promo Code: WSN

Claim Kalshi Promo Code

2. Crypto.com

While Crypto.com isn’t as well-known as Kalshi for sports contracts, the platform has long been one of the country’s top choices for trading cryptocurrency. While sports prediction markets are new, Crypto.com offers lower buy-and-hold fees and more automation tools than other prediction platforms. If you are a fan of trading and want to dabble in sports betting, this is a fantastic choice.

To get in on the March Madness action, new users can currently unlock up to a $50 welcome bonus in CRO after making their first $100 in tournament trades.

» Read our Crypto.com Prediction Market review for more info.

⭐ WSN rating: 4.3/5
💰 Sign up offer: Get up to $50 in CRO
🤩 Promo Code: No Promo Code Required

Claim Crypto.com Welcome Offer

3. Underdog Predict

Underdog has a reputation as one of the country’s top options for daily fantasy sports, but the operator is now focusing on sports prediction markets. The platform is an excellent choice for DFS and sportsbook fans, as it is less intimidating to those unfamiliar with online trading. Underdog also allows players to use their wallets to access its pick’em app in states where it's available.

To jump into the March Madness action, new users can currently claim a straightforward Play $5, Get $50 in Bonus Entries welcome offer. Just place your first $5 entry on any tournament game, and Underdog will instantly credit you with $50 in bonus funds to use throughout the rest of the bracket. If you’re a sports bettor looking to try prediction, look no further than Underdog Predict.

» Check our Underdog Predict review.

⭐ WSN rating: 4.3/5
💰 Sign up offer: Play $5, Get $50 in Fantasy Bonus Entries
🤩 Promo Code: WSNPLAY

Grab Underdog Promo Code

4. OG

While Crypto.com hosts its own sports prediction markets, it recently launched OG as a standalone platform targeting sports bettors. It feels far less intimidating than the main Crypto platform, especially for sportsbook veterans. While the platform focuses on sports, many other markets are available.

To get in on the March Madness action, new users can sign up right now to claim five 100% Profit Boosts. This welcome offer allows you to double your winnings on your first successful tournament trade each day for your first five days. OG is available in 49 states, but the platform is not available to bettors in the massive New York market.

» Don't miss our detailed OG Prediction review.

⭐ WSN rating: 4.2/5
💰 Sign up offer: Up to $100 in Bonuses
🤩 Promo Code: No Promo Code Required

Claim OG Bonus Offer

5. Robinhood

Robinhood is a wildly successful trading platform that makes it easy to use for investors, regardless of experience. It has taken the same approach to its sports prediction markets, which have exploded in popularity. While its sports markets are more limited than the others on this list, its ease of use makes it a perfect fit for new or casual prediction market users.

To get in on the March Madness action, new users can currently claim a welcome bonus of up to $200 in reward stock just for signing up and linking a bank account. You can then use those bonus funds to buy and trade contracts on your favorite tournament matchups right alongside your regular investment portfolio.

» Find more details in our Robinhood Prediction Market review.

Quick Overview of Available March Madness Betting Promos

The following table contains the welcome offers for our top March Madness sportsbooks and a link to help you claim each one:

Get more info on the Best March Madness Betting Promos and Bonuses here.

Is Betting on March Madness legal in the US?

March Madness is legal to bet on in the US, but regulation differs from state to state. Some still ban all forms of sports betting, while others have chosen to add wagering restrictions for college events. You can find the latest legal status information for each state in the table below.

How to Bet on March Madness - Types of NCAA Tournament Bets

The best March Madness sportsbooks will have several ways for bettors to get in on the action. Below is a list with a brief explanation as to what the bet is, but we go into much more detail in our March Madness Betting Guide.

1. Moneyline

If you are just interested in betting on whether a team will win a game straight up (no spread involved), then you’ll want to bet on the moneyline. But to account for one team being perceived as better than the other, you stand to win less money when betting on favorites (listed with minus odds) than you would on an underdog (listed with + odds).

2. Spreads

The point spread estimates how much one team (the favorite) is expected to beat another (the underdog). For a bet to win, favorites must beat the opponent by more than the spread; underdogs must win outright or lose by less than the spread.

3. Over/Under (Totals)

If you do not want to bet on one team to win a game, you can bet on how many points both teams will combine to score. A number will be listed in the betting line for a game. You can bet on whether the final score of the game will be OVER the listed total or UNDER.

Let’s say the total on a game is 130.5 points, and the final score is Team A 70 and Team B 65 for a total of 135 points. Bets on the OVER will settle as winners.

4. Prop Bets

A prop bet is a wager not tied directly to the outcome of a game. Common college basketball prop bets include things like first basket, last basket, O/U player point, rebound, steals, blocks, etc. totals, three-pointers, team-specific point totals, etc.

5. Parlays/Same-Game Parlays

Parlays and same-game parlays give bettors the opportunity to combine multiple bets into one large wager with the hope of winning a more significant payday. But while you can win more money, the risk is exponentially higher, meaning you are less likely to win. For a bet to win, you have to win every leg. Lose one and your wager settles as a loss.

6. Futures

Futures give bettors a chance to bet on the outcome of a future event. A perfect example of that is the NCAA National Championship Winner. Bettors have been able to put money down on who they think will win this year since shortly after the last title game finished; some sportsbooks have odds for the next one before the current title game even plays. 

7. Live Betting

Live betting gives bettors a chance to bet on a game while it is underway. Options will vary among sportsbooks, but common markets include spreads, moneylines, and totals for the first/second half, individual team totals, the outcome of a current/next drive (football), whether a pitcher will strike out/walk a batter (baseball), the outcome of an at-bat (baseball), etc.

March Madness 2026 Schedule

The 2026 march edition of March Madness is right around the corner! Below are some key dates to know for this year’s tournament.

• Selection Sunday: Sunday, March 15

• First Four: March 17-18

• First round: March 19-20

• Second round: March 21-22

• Sweet 16: March 26-27

• Elite Eight: March 28-29

• Final Four: April 4 

• NCAA championship game: April 6 

Brackets and odds for March Madness will be available once the Selection Sunday show ends. Be sure to get your bets in before games begin just two days later. 

Best Performing March Madness Teams

While March Madness is famous for its unpredictability, some teams have seen far more success than the rest. We’ve created a table below showing the six teams that have performed the best in March Madness.