Best USA March Madness Betting Sites For 2021

march madness logoThe pinnacle of college basketball betting is the NCAA Men’s Division I Basketball Tournament that takes place at the end of each season and determines the eventual national champion. The USA’s best March Madness betting sites for 2021 are offering NCAAB odds for the final 68-team tournament now, and we’ve provided a detailed roadmap below to guide you along the way.

Our staff has evaluated what the web has to offer and has provided access to our reviews of top online sportsbooks featuring March Madness odds below. Read on to see what these premium sportsbook sites have to offer and if they are available in your area of the United States.

#1 USA Online Sportsbook

Offering NCAA Tournament Odds

Top Rated USA Site

BetOnline has been around for many years and has established a strong reputation among online basketball bettors in the USA, and for good reason. Whether using their web-based mobile betting application or a personal computer, BetOnline offers a full spectrum of odds on major sports, including the ever-popular NCAAB March Madness Tournament.

BetOnline treats their customers to a wealth of deposit and withdrawal options featuring cryptocurrencies such as Bitcoin (BTC) for the industry’s fastest and most secure transactions. To top it all off, they also extend a substantial bonus offer to new members when they make their first deposit – 50% up to $1,000!

Poker room, horse betting and casino games also available without leaving the site

Multiple basketball odds including College, Pros, and International

Trusted online sportsbook with over 20 years experience

Our Top 6 Rated
USA Sportsbooks With March Madness Odds

 Site NameCurrent BonusU.S.Visit Site
1Bovada Logo50% Max $1,000USA Friendly SportsbookVisit Site
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2Betonline Logo50% Max $1,000USA Friendly SportsbookVisit Site
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3MyBookie Logo50% Max $1,000USA Friendly SportsbookVisit Site
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4BetUS Logo100% Max $2,500USA Friendly SportsbookVisit Site
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5Sportsbetting.ag Logo50% Max $1,000USA Friendly SportsbookVisit Site
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6Bookmaker Logo100% Max $300USA Friendly SportsbookVisit Site
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7xbet logo100% Max $500USA Friendly SportsbookVisit Site
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Is It Legal To Bet On NCAA March Madness Odds In The United States?

Yes. USA bettors can lay some action on the March Madness Tournament each year using a domestic sportsbook or an international online betting site.

International – Online March Madness betting sites like the ones we recommend above are able to take wagers over the net from customers inside of the United States because there are no laws in place to prevent them from doing so.

These top-rated USA sportsbooks sites that offer NCAA Men’s Basketball Tournament odds accept members from most states, and are legal to use at 18 years of age in all territories save for WA who has passed laws prohibiting all online gaming.

Domestic – Many states in the USA feature regulated sportsbooks that are either in-person, online, or are taking bets on 2021 March Madness odds via a mobile app. Most, but not all, of these domestic sports betting venues require a minimum age of 21 to place a wager.

What Is March Madness?

March Madness is a 68 team tournament that decides the NCAA Men’s College Basketball National Champion at the conclusion of each season. There are 32 automatic bids to the tournament that are earned via conference tournament championships or regular-season conference titles.

On Selection Sunday, the Committee will announce the final 36 at-large bids who are awarded a spot in the tournament based on their regular-season achievements.

The tourney opens with the First Four, which are 4 play-in games that allow the lowest four at-large teams to face off against the lowest four automatic bids for a chance to enter the final 64 proper.

Once the final 64 teams are set, each round until the semifinals lasts for two days, narrowing down to 32, the Sweet 16, the Elite 8, the Final Four, and then the Men’s Division I Basketball National Championship Game.

  • First Four – Final 8 Qualifiers Compete For the Final 4 Tournament Spots
  • First Round – 64 Teams, 32 Games, 2 Days
  • Second Round – 32 Teams, 16 Games, 2 Days
  • Sweet 16 – 16 Teams, 8 Games, 2 Days
  • Elite 8 – 8 Teams, 4 Games, 2 Days
  • Final Four – 4 Teams, 2 Games, 1 Day
  • National Title Game – Final 2 Teams
March Madness Betting Action

How To Bet On The Odds To Win March Madness

Individual game lines for NCAA Tournament matches at basketball betting sites will almost always include the point-spread, money line, and over under.

Point Spread – This is a numeric value that can be presented in the positive or negative that indicates how many points a team is expected to win or lose by. For example, a point spread of -7 for the Kentucky Wildcats indicates that they are expected to win by 7 or more points, and that they must win by at least 8 to cover.

Money Line – These odds are typically shown in positive or negative three-digit numbers that reflect the team’s chances of winning and also state how much money can be won by betting on them. For example, a team with +325 odds will payout at $325 for each $100 wagered, but a team with -200 odds will require a wager of $200 to earn $100.

Over/Under – Oddsmakers set a point total that they believe both teams will combine to score and ask bettors to wager on whether or not the final result will fall above or below that mark.

March Madness Prop Bets – Proposition bets on March Madness can cover anything that occurs during the broadcast, from what is shown on the screen to player statistical totals. These outcomes are typically offered with money-line odds.

Parlays, Teasers, and Pleasers – These types of March Madness bets involve the combining of multiple wagers into one. Typically, if one element of the wager fails, then the entire bet fails. There are also variables that allow the bettor or the book to adjust the odds to their liking.

When Is March Madness?

  • Selection Sunday - March 16, 2021
  • First Four - March 16-17, 2021
  • Round of 64 - March 18-19, 2021
  • Round of 32 - March 20-21, 2021
  • Sweet 16: March 25-26, 2021
  • Elite 8: March 27-28, 2021
  • Final Four: April 3, 2021
  • Final: April 5, 2021
March Madness ball and court

Odds Of Having A Perfect March Madness Bracket

One aspect that has served to popularize college basketball betting is the attention that is paid to filling out March Madness brackets and participating in online contests that dole out huge prizes to anyone that can accurately predict the flow of the tournament.

There has never been an instance of a perfect bracket, and the odds of doing so is in excess of 100 billion to one. That probability suggests that it may never happen, but fans will certainly keep trying.

To capitalize on this interest, major sports brands such as ESPN, CBS Sports, Yahoo! Sports, and domestic sportsbooks, offer bracket contests with varying degrees of grand prizes and stipulations for entry. We recommend participating in as many of these contests as possible to maximize your potential for success.

2021 March Madness Tournament Bracket

2022 March Madness Bracket

2021 March Madness Betting Odds

The top USA sportsbook sites offer lines for individual tourney games and futures odds to win March Madness. Until the tournament begins, the best indicator for qualifying teams can often be the individual college basketball conference odds because those winners receive an automatic bid.

Once the NCAA Men’s Division I Basketball Tournament begins, game lines, prop bets, futures, and more will be in play.

Most NCAAB National Championships

College Basketball National Championship Apperences

Most March Madness Appearances

March Madness Apperences

March Madness Betting Apps

Basketball fans are on the go more than ever these days, and the mobile betting apps offered by our A-grade sportsbook sites offer full-court coverage for your college hoops wagering needs. As long as your iPhone, iPad, or Android smartphone or tablet is connected to the web, the entire wealth of NCAAB betting options can be accessed using sleek touch-button controls.

These apps are web-based for quick and easy access by simply clicking on one of the sportsbook links we feature on this page, and also deliver access to the remainder of their full sportsbook and collection of casino games.

Deposit & Withdrawal Options

One of the many benefits of online sports betting sites is their ability to offer a large variety of deposit and withdrawal options, and the books we recommend deliver the goods. Sportsbook deposits can be made via USD using traditional means, but cryptocurrency and Bitcoin (BTC) offer the fastest transaction times and largest bonus offers.

Bitcoin withdrawals can be completed in less than 24 hours, and BTC deposits complete within minutes and get you to the betting window rapidly. Below is a more complete picture of the banking options that are offered at the web’s premium college basketball betting sites.

Deposit – Cryptocurrency, Credit/Debit Cards, Bank Wire Transfers, Cashier’s Checks, Money Orders, Vouchers, Zelle.

Withdrawal – Wire Transfer, Cashier’s Check by Courier, Vouchers, Cryptocurrency* (Bitcoin, Bitcoin Cash, Ethereum, Cardano, Ripple, Tether, Litecoin)

*Cryptocurrency is the only withdrawal method that can be completed within 24-hours

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