Best March Madness betting sites in 2025: Top NCAAB Sportsbooks

Top March Madness promo code offers

To claim some of the premier March Madness betting promos for new users, you may need to enter a promo code. We've gone ahead and pinpointed the best March Madness betting promo codes and laid them out for you in the table below. Once you've absorbed which codes correspond with which offers, continue reading for a thorough breakdown of our top March Madness betting sites.

Gambling Problem? Call 1-800-GAMBLER.

Best March Madness betting promos and boosts

The best sportsbooks in the nation provide exclusive March Madness betting promos and odds boosts you can capitalize on throughout every round of the Big Dance. We've listed the top ones below: 

bet365 🟢

🔥 NCAAB early payout — You can place a pre-game moneyline wager on any March Madness game. If the team you picked goes up by at least 15 points, your wager will automatically win. 

BetMGM 🦁

🔥 March Matchups boost pack — Opt in to acquire three 64% boosts — one for odds, live betting, and parlays — that can be used on any March Madness tournament game.

Caesars Sportsbook 🏛️

🔥 Parlay The Tournament — Enter this contest to win up to $50,000 in bonus bets. Simply place a winning $5 same-game parlay on any March Madness game before April 8, 2024. The maximum same-game parlay odds are +10,000, and the contest winner will be announced post-tournament. 

DraftKings 👑

🔥 March Mania No Sweat — Opt in and make any type of wager with final odds of -500 or longer on any team in the 2024 March Madness tournament to garner a No Sweat token if your wager loses. Keep in mind that the token will expire seven days after receipt.

🔥 Pepsi Zero Right Bracket Challenge — Enter this free-to-play contest for the opportunity to win up to $100,000 in real-money prizes. Simply fill out your March Madness bracket with the teams you think are most likely to lose each matchup. The more games you forecast correctly, the more points you earn.

Top 5 March Madness betting sites

For first-time bettors, selecting the right March Madness betting site is vital. The options listed below stand out for their trustworthiness and offer generous welcome bonuses, perfect for those new to the excitement of March Madness betting.

1. FanDuel 🔵

FanDuel Sportsbook tops our list of the best March Madness betting sites due to its impressive welcome bonus — no FanDuel promo code needed — and a vast array of NCAAB betting markets. The platform distinguishes itself as one of the most innovative sports betting apps in the nation, enhancing user experience and complemented by the option for live streaming through FanDuel TV and FanDuel+.

While FanDuel’s live in-play betting and advanced cash-out features allow bettors to control their wagers, there are some considerations to bear in mind. The sportsbook may limit bettors experiencing a winning streak, and some users might find the loyalty rewards program a bit underwhelming compared to competitors. Additionally, the pricing on specific markets might carry more juice, impacting the value on offer.

Despite these drawbacks, FanDuel’s comprehensive wagering options and user-friendly platform position it as a top choice for those looking to place March Madness bets.

For more on why the iconic sportsbook is arguably the best March Madness betting site, read our FanDuel review.

2. DraftKings 👑

DraftKings sets itself apart from other March Madness betting sites via an expansive selection of NCAA basketball betting markets, surpassing its competitors in variety and depth. The sportsbook is committed to keeping its March Madness betting experience fresh and engaging through regular promotions and bonuses, along with a generous welcome offer that doesn't require a DraftKings promo code.

However, DraftKings does have flaws. One notable shortcoming is the lack of live chat customer support, which might inconvenience bettors seeking immediate assistance. Also, while DraftKings is known for rewarding skilled bettors, those who consistently win big may find their betting limits restricted, a risk-management practice common in the industry.

Overall, few college basketball betting sites can match DraftKings Sportsbook due to its market diversity, high-quality March Madness betting promos, and industry-leading mobile app.

To discover more about the platform, dive into our DraftKings review.

3. bet365 🟢

Should you opt to do your March Madness betting with bet365, you'll find an extensive selection of event-specific bonuses and promotions — plus, new users can utilize bet365 bonus code ODDSBONUS (or ODDS365 if in CO or NJ) to snag one of two top-tier welcome bonuses.

The famous March Madness betting app is a testament to modern design and user-friendliness — it's easy for bettors to navigate through a comprehensive array of betting markets. bet365 also sets itself apart by providing early bet grades before events conclude, enhancing the excitement and dynamics of live betting.

Keep in mind that bet365 does implement betting limits on consistent winners. Also, the NCAAB betting site isn't quite as ubiquitous in the U.S. as some of its competitors, meaning customers in certain regions may be forced to do their March Madness betting elsewhere.

Ultimately, bet365 Sportsbook provides an array of March Madness betting promos, a stellar mobile app, and plenty of market options, making it an undeniably great option for any hoops lover.

Check out our full bet365 review to uncover more about the sportsbook.

4. Caesars Sportsbook 🏛️

You can't go wrong betting on March Madness with Caesars Sportsbook, as the well-established industry leader provides an exceptional first bet offer of up to $1,000 for new customers when they enter Caesars Sportsbook promo code OPBONUS1000. The Caesars app also stands out for its user-friendly layout and interface, making it smooth for both newcomers and seasoned bettors to navigate and place bets.

In terms of drawbacks, Caesars lacks real-time stats as part of its live betting experience, which can detract from making informed decisions during games. Furthermore, while Caesars offers a wide range of March Madness online betting options, those looking for alternative markets on main sports may find better selections elsewhere.

Caesars Sportsbook earns its place among the best March Madness betting sites due to its high-value welcome offer, considerable market coverage, and user-friendly app.

For more expert insight on the NCAAB betting site, dig into our Caesars Sportsbook review.

5. Fanatics Sportsbook 🎽

Although a newcomer to the online sports betting industry, Fanatics Sportsbook is backed by a well-established brand known country-wide. The product boasts an impressive range of March Madness betting markets, offering highly competitive odds and lines. It also entices new bettors with a solid welcome bonus — no Fanatics promo code necessary.

As a fresh face, Fanatics faces challenges, including a limited array of promotional offers for existing users. While the sportsbook shows plenty of promise, it still needs time to develop and enhance its features to match or surpass its rivals' offerings.

Still, Fanatics' commitment to providing competitive odds, a range of Big Dance betting markets, and excellent customer service positions it as a promising NCAAB betting site.

Scour our complete Fanatics review for more actionable intel on the betting app.

How we rate March Madness betting sites 

Our rating system considers several key criteria to help you find a March Madness online betting site that meets your needs. Here's what we look for:

Trust and security

The best March Madness betting sites deliver secure and trustworthy platforms. We evaluate each site's licensing, regulation, and reputation. We only recommend sites with robust encryption protocols to protect user data and transactions, ensuring your betting experience is safe and secure.

App quality

The quality of a March Madness betting app is crucial for bettors who prefer to place bets on the go. We assess the app's usability, stability, and availability of features compared to the desktop version. A top-rated app offers a seamless, intuitive betting experience on any device.

Competitive odds

Competitive odds are essential for getting the best value on your March Madness bets. We compare the odds offered on Big Dance games across different sportsbooks — as well as NBA odds, NFL odds, MLB odds, NHL odds, and more — highlighting those that consistently offer attractive lines that can potentially maximize your winnings.

Market coverage

Comprehensive market coverage allows bettors to explore various betting options. We pick sportsbooks that offer a broad range of markets for March Madness, including game outcomes, point spreads, player props, and more, catering to diverse betting preferences.

Payment methods

Convenient payment methods for deposits and withdrawals are a must. Our ratings consider the variety of payment methods available, processing times, and any associated fees. Top March Madness sportsbooks offer a range of secure and user-friendly banking solutions.

Bonuses and promotions

Sportsbook promos and bonuses can provide significant value to bettors, especially new users. We evaluate the types and generosity of bonuses, such as welcome offers, odds boosts, free March Madness bracket contests, and loyalty rewards, ensuring you get the most out of your betting experience. Plus, March Madness betting sites with a quality sportsbook referral bonus receive an extra nod of approval.

Live betting

The ability to place March Madness bets as games happen adds an extra layer of excitement and engagement to the online wagering experience. We examine the live betting interface, the variety of live markets available, and how quickly odds are updated.

How to sign up with March Madness betting sites

Getting started with March Madness betting sites is easy. By following the steps outlined below, new customers can quickly join the action and place their bets on one of the most exciting sports events of the year.

1. Choose a March Madness betting site

Start by selecting a reputable March Madness betting site and download its associated app. Consider factors like security, odds, bonuses, and user reviews. Choose a platform that suits your betting preferences and needs.

2. Register

Once you've chosen a site, proceed to register. You'll need to provide personal details such as your name, email address, date of birth, and, sometimes, a valid ID for verification purposes. Make sure the information provided is accurate to avoid issues later.

3. Deposit

After your account is set up, you'll need to deposit funds to start betting. Go to the banking or cashier section of the site, choose the payment method you want to use, and follow the instructions to fund your account. Look out for any welcome bonuses or deposit matches that you can claim.

4. Place your bets

With your account funded, navigate to the March Madness section of the site to see the available markets. Select the game or outcome you want to bet on, choose the bet type, write the amount you wish to wager, and confirm your bet. Remember to gamble responsibly and stick to your budget.

5. Withdraw

If you win and decide to cash out your earnings, head back to the banking section and select the withdraw option. Choose your preferred withdrawal method, insert the amount you wish to take out, and follow the instructions to complete the process. Withdrawal times vary by payment provider, so check the estimated timelines and any fees that may apply.

March Madness betting odds 2025

The University of Connecticut Huskies defeated the Purdue Boilermakers in the 2024 championship game to win their second straight title. A three-peat isn't outside the realm of possibility, as the Huskies are one of the early favorites for the 2025 tournament, alongside perennial powerhouses Duke, Kansas and UNC.

Odds to win the National Championship Game 2025

Odds provided by DraftKings – accurate as of April 9

Popular bet types at March Madness betting sites

March Madness offers a wide array of betting options, catering to the preferences of different bettors. Understanding the various types of bets can enhance your betting strategy and increase your chances of winning. Let's dive into the most common bet types you'll encounter during the tournament.

Moneyline

The moneyline is the most common bet type, where you pick the team you think will win the game. Each team is assigned odds that indicate the potential payout. Favorites have negative odds, showing how much you need to bet to win $100. Underdogs have positive odds, showing how much you win if you bet $100. It's a great starting point for beginners due to its simplicity.

Spreads

Simply put, betting the spread is wagering on a win-or-lose margin for a team rather than the outright winner. The sportsbook sets a line, or "spread," and you can bet on whether the favorite will win by more than the given number or if the underdog will lose by less than that number or win outright. This type of bet levels the playing field between mismatched teams, offering more strategic betting options.

Totals (Over/Under)

Over/Under bets, also known as totals, require you to bet on the combined total score of both teams in a game. The sportsbook sets a number, and you have to wager on whether the actual total will be Over or Under that number. This type of bet is ideal for those who prefer to focus on the game's overall pace and scoring efficiency rather than picking a winner.

Props

Proposition bets, or props, are wagers on specific events or outcomes within a game that aren't associated with the final result. These can include bets on individual player performances, such as points scored, rebounds, or assists, or team statistics, like the number of three-pointers made. 

Parlays

Parlays combine multiple bets into one wager, increasing the potential payout but also the risk, as all selections must win for the parlay to pay out. You can mix different types of bets, like moneylines, spreads, and totals, across multiple games. Parlays require a strategic approach and in-depth knowledge but can offer significant rewards.

Futures

Futures bets involve wagering on results that will be decided in the future — for instance, forecasting which March Madness sleepers will perform the best in the tournament. Odds are provided for all participating teams and adjust as the tournament progresses. Futures offer the chance for high payouts, especially if you bet on an underdog early in the season or before the tournament starts.

March Madness betting resources

Navigating the world of NCAA March Madness betting can be thrilling yet daunting, especially for newbies. To aid your journey, we've compiled a list of invaluable resources covering everything from placing a bet to making informed predictions.

How to bet on March Madness

For those new to sports betting or looking to refine their strategy, a comprehensive guide on how to bet on March Madness is essential. These guides cover various bet types, understanding odds, and tips for successful betting. They are designed to enhance your betting insight, ensuring you make informed decisions throughout the tournament.

March Madness odds

Keeping on top of the latest odds is crucial for betting success. They can fluctuate significantly as the tournament progresses, influenced by team performances, injuries, and March Madness betting trends. A dedicated odds page provides real-time updates and comparisons across top sportsbooks, helping you find the best value for your bets.

March Madness picks and predictions

Expert predictions and picks can be valuable for bettors looking to gain an edge. These analyses are based on detailed statistics, team form, historical performance, and expert insights. From March Madness Sweet 16 odds, picks, and predictions through to March Madness Final Four odds, picks, and predictions, this data can guide your betting strategy.

March Madness 2025 quick facts

When to bet on March Madness in 2025

March Madness tips off on March 18, 2025 with the First Four, quickly followed by the start of the first round on March 20. The Final Four takes place April 5 in San Antonio, and will conclude with the championship game on April 7.

Here's the schedule for the 2025 NCAA men's basketball tournament:

• Selection Sunday: Sunday, March 16
• First Four: March 18-19
• First round: March 20-21
• Second round: March 22-23
• Sweet 16: March 27-28
• Elite Eight: March 29-30
• Final Four: April 5
• National championship game: April 7

Where is it legal to bet on March Madness in the U.S.?

Blacklisted March Madness betting sites

Even as legal sports betting continues to expand across the U.S., there are bettors who still prefer to make use of illegal offshore websites and apps to do their wagering. We highly recommend avoiding these sportsbooks when doing your March Madness betting. If you happen to not receive your winnings when using these unregulated operators, there is little recourse to recouping that value.

Best March Madness betting sites FAQs