March Madness Betting Sites and Sportsbook Promos
| Online Sportsbooks · Promo Codes · March Madness Betting |
Every year, sports fans swallow a tough pill when the NFL season concludes in February. For half the year, football captivates the nation and then, it's gone. Fortunately, the NFL playoffs, including the Super Bowl, act as a perfect runway to one of the most fun and unique sporting events in the country.
Prediction markets are changing the game, and you can get in on the action just in time for March Madness. Use our Kalshi promo code and claim a new user bonus by clicking on the module below.
Can I Bet on March Madness?
Yes! Below is a list of legal sites that bettors used to place wagers on the 2026 NCAA Tournament. These sportsbooks have the best March Madness sportsbook promos available.
bet365
The international sportsbook has soared in popularity in the United States over the last few years thanks in part to their popular daily boosts.
Our bet365 bonus code
They even had a 2025 free bracket challenge for the tourney as $10 million is up for grabs at the bet365 sportsbook.
bet365 is live in Missouri since December 1st, new players can use
Fanatics Sportsbook
Updated on 4/29/26
The mega brand that is Fanatics has been one of the most exciting additions to the sports betting world over the last year.
Use our Fanatics Sportsbook promo code
Fanatics Sportsbook is giving their users plenty of odds boosts, profit boosts, and opportunities to get FanCash during March Madness.
Fanatics went live in Missouri on December 1, 2025. New players in the state can claim the offer
BetMGM
Updated on 4/29/26
The well-known gambling brand BetMGM has enlisted multiple celebrities to lead their marketing campaign over the last few years in an attempt to climb into the upper-echelon of mobile sportsbooks through aggressive marketing.
Using promo code
You can also use promo code
Users can also use promo code
DraftKings
Updated on 4/29/26
Almost everything said above can be said about the DraftKings promo code as well. It is FanDuel's biggest rival in the sports betting space and has been for several years.
In available states, you can get this DraftKings offer:
The Boston-based operator boasts a mobile app with a smooth interface and plenty of enticing deals. DraftKings is constantly offering users odds boosts, credited promo bets, and other creative incentives.
FanDuel
FanDuel is the sports betting industry leader, hauling in approximately a 40% market share according to most estimations. It offers users a top-notch mobile app and easy-to-use website.
New users in AZ, CO, CT, DC, IL, IA, KS, KY, LA, MA, MD, MI, IN, VA, MO, NC, NJ, NY, OH, PA, TN, VT, WV, WY can get this offer:
FanDuel is now live in Arkansas! New users can claim one of these welcome offers:
One thing that separates FanDuel from its competition is its notably large selection of leagues and markets. This could come in handy during March Madness when FanDuel offers props, odds boosts, or bonus bets that other operators don't typically offer.
Caesars Sportsbook
Updated on 4/29/26
Caesars is a renowned entertainment and hospitality company and that is reflected in their mobile app. This platform offers plenty of leagues and markets for bettors to get involved in.
Use code
theScore Bet
Updated on 4/29/26
theScore Bet officially launched on December 1, 2025, replacing ESPN BET, and is expected to expand into several U.S. states after PENN and ESPN ended their licensing agreement.
Use the code
This new sportsbook offers plenty of appeal, with competitive odds, an intuitive interface, and a top-tier mobile betting app.
March Madness Betting Overview
There is nothing quite like March Madness.
From mid-March to the first week of April, sports fans, bettors, and people who have never watched a basketball game in their life get in on the madness.
They don't play in the NCAA's 68-team, single-elimination men's basketball tournament, but they watch, bet, and fill out a bracket. Over the years, March Madness bracket pools have found their way into corporate offices, bars, and even schools.
Now, brackets and many other forms of March Madness betting show up in legal sportsbooks.
According to most estimates, The NCAA Tournament brings in about $8-$10 billion in sports wagers each year. Analysts expect that number to grow in 2026 alongside the rapid spread of legal sports betting in the US.
March Madness Sportsbook Promos
Promo codes and welcome offers are a big part of sports betting, especially around the time of major events like March Madness.
First-time users on March Madness betting apps will almost always be able to take advantage of a welcome offer consisting of a deposit match, bonus bet, or something similar.
NCAA Basketball Special Offers
March Madness sports betting apps regularly have promotions running that don't require the beneficiary to be a new user.
FanDuel usually has a few options to snag a good March Madness promo.
Both bet365 and BetMGM usually also promote free to enter bracket challenges with winnings up to $10 million. Try getting lucky with your March Madness bracket to receive bonus credits.
Promotions ordinarily start with the First Four and reset or get re-shaped for each round. Plenty of books also offer odds boosts on certain teams to make the Final Four or win the national championship.
How to Sign Up and Bet on March Madness Betting Apps
Signing up for a site to bet on March Madness is a relatively universal process. While there may be a couple minor caveats depending on the sportsbook, the following instructions should suffice.
- Navigate to your desired March Madness betting app or website
- Click the "Sign Up" or "Join" button
- Check back with Vegas Insider for any relevant promo codes
- Enter a variety of personal information such as name, birthday, address, and last four digits of your SSN
- Link your bank account, credit or debit card, or money transfer account
- Make a deposit and start betting!
How Do I Bet on March Madness?
Betting on March Madness is simple. Use the links that we offer to sign up for exclusive deals and promotions!
How Do I Know If It's Legal To Bet In My State?
Sports betting is legal in some capacity in about 30 US states. Some of those states, however, are limited to in-person wagering only or have a severely limited amount of online options.
Still, legal sports betting in 60% of US states is awesome. When it comes to March Madness, there are a couple nuances.
More than a handful of states have restrictions in place for betting on college sports.
New York and New Jersey, two of the country's biggest sports betting markets, don't allow wagers on their home-state college teams. They also prohibit bets on any college events taking place in their state.
Below is a list of states with sports betting restrictions in place for college sports:
- Connecticut
- Delaware
- Illinois
- New Hampshire
- New Jersey
- New York
- Oregon
- Rhode Island
- South Dakota
- Virginia
- Washington
Within this list, there are variations of the restrictions. For instance, Connecticut and New York do allow sports betting on local college teams if the team is participating in a tournament of four or more teams. However, North Carolina does allow prop betting on college sports on approved leagues, like collegiate football and basketball.
It's also worth noting that Arizona, Colorado, Indiana, Iowa, Michigan, Mississippi, South Dakota, Tennessee, and Virginia do not allow prop betting for college sports.
College sports betting restrictions, while confusing at times, are meant to protect the student-athletes.
March Madness Betting Sportsbooks FAQ
Can you bet on March Madness?
Yes! Betting on March Madness is legal in quite a few states across the US. We've got all the information you need to bet legally right on this page.
What are the best March Madness sportsbook promos?
By checking out all of the sportsbooks reviewed above in this article you can find plenty of March Madness sportsbook promos to take advantage of!
Where can you place a bet on March Madness?
The best March Madness betting sites include Fanatics Sportsbook BetMGM, FanDuel, DraftKings, bet365, Caesars Sportsbook and more: check out those sites here and don't forget to use our promo codes and links for some extra value right off the bat!
Who was favored to win March Madness 2026?
Oddsmakers have the Duke Blue Devils as the favorite to win the NCAA Men's Division I Basketball tournament in 2026.
The 68-team NCAA Tournament makes for one of the most exciting sporting events in the US. Over a three week span, each weekend is jam-packed with games from noon to midnight.
It's the best excuse sports fans have to park themselves on the couch for an ungodly amount of time. That, paired with the fact that so many people who are traditionally uninterested in basketball, or sports altogether, enjoy filling out brackets or betting on games, makes it that much more enjoyable.
While the Super Bowl reigns supreme as the single-game betting handle champ, March Madness is the most bet-on sporting event in the US.
If you're looking to get in on the action, be sure to check out Vegas Insider's awesome March Madness betting pages, and check back for updates regarding special March Madness promotions!
Other Betting Resources:
College Basketball Odds | March Madness Odds | Best College Basketball Betting Sites