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Which Sites for Betting on March Madness

These are the Best Online Sportsbooks for March Madness Betting

Featuring 68 college basketball teams, from the first division of the NCAA, March Madness is a knockout competition created in 1939 to determine the national champions. Up to $10b is expected to be wagered on this year's event. 40% more than on the Superbowl!

With that in mind, and if some of those dollars are yours, we need to discover which is the best betting site for making wagers on March Madness 

The best betting site for placing wagers on March Madness will be an online sportsbook that operates legally under license in the state you wish to bet in. It will offer a range of lines and spreads along with bracket predictions and proposition bets.

WARNING: In some states, you are unable to bet on collegiate events. Click here to find out of your state is affected

Here are the best legal sports betting sites online for March Madness, and later I will discuss the best ways to bet on the event.

Select Your State Above To See The Promo Codes

Each online sportsbook will have an attractive welcome bonus and maybe free bets that you can use to wager on March Madness - Hit your state above and what offers you can get.

Which March Madness Betting Apps are Available in my State?

Check this table to see which sportsbooks are available for march madness betting in your state, then scroll down, hit 'See Offer' and find out more to get started.





William Hill



Borgata Sports


Best Sportsbook for March Madness Betting

BetMGM Sports offers sports betting options from professional football to college basketball and even tennis and boxing matches. ... Explore online sports gambling with BetMGM
  • Great All-In-One Betting App
  • Huge Recognizable US Brand
Exclusive free promotions and best deals! BetRivers Sportsbook welcomes you to a world of benefits for the player. Try the games and take advantage of the promos!
  • Live Betting at its Best
  • Daily Promotions
  • iRR Loyalty Rewards Scheme
Owned by Churchill Downs Incorporated, the home of the Kentucky Derby, Bet America has a proud history of providing safe, secure, and fun betting to American patrons.
  • Horse Racing Wagering Available
  • Live Racing Feeds
  • Fast Withdrawals
Unibet brings US bettors all the excitement and passion of sports with a huge range of betting markets
  • Parlay bonuses and boosts
  • More markets than other bookmakers
  • Excellent ongoing promotions
Fixed odds markets (Sports & Entertainment) + PointsBetting where the more your bet wins by, the more you win.
  • Not Only Sportsbook But Unique Points Betting Options
  • Long Established Australian Sportsbook with a good reputation
  • Licensed & Legal
Ceasars Sports Betting online. Sign up for Caesars Sportsbook - America's #1 Sportsbook operator. Bet online on basketball, football, more.
  • 100% up to $5,000 Risk Free Bet Welcome Offer
  • Lots of Football Market Options
  • Very Good Futures Betting
Online Sportsbook Wagering from one of the biggest names in AC - Bet on your favourite sport with the new Caesars Online Sportsbook
  • Sportsbook & Casino on One Account
  • Low Minimum Wagers
  • Lots of Banking Options
The World's Biggest Online Sportsbook
  • Best Odds on Major Sports
  • Best Choice Of Betting Markets
  • Worlds Biggest Online Sportsbook
NOW ONLINE - Borgata's Race & Sportsbook offers the finest sports and off-track horse betting experience.
  • Very Simple Design, Ideal for Beginners
  • Good Promotions for Registered Players
  • Top Casino Brand Backing
Exclusive free sports, casino and bingo promotions and slot games best deals! SugarHouse Online Casino & Sports welcomes you
  • Unique betting platform laid out clearly
  • Incredible soccer betting options
  • Jackpot Parlay game for BIG WINS

Which March Madness Betting Apps are Available in my State?

Check this table to see which sportsbooks are available for march madness betting in your state, then scroll up, hit 'See Offer' and find out more to get started.





William Hill



Borgata Sports


March Madness Betting Promo Codes

A great advantage to making your March Madness bets online is that you can register a new account with an online sportsbook and find a March Madness Promo code, to grab some bonus funds or a welcome offer to make some wagers with.

You will need to check out all available Free bets for your state, but what better way to build a bankroll than to deposit to a new account and have the sportsbook match it with a bonus.

Check what March madness offers are available in your state by checking the links below

There are several ways of gaining a March madness bonus, and the promos codes are often pre-filled here at OLBG making the process even more simple.

When looking at the list of march madness betting offers available in your state, ensure that you read the full terms and conditions fully and understand any wagering requirement before the bonus money can be turned into real cash. in most cases, for sports betting sites it will be only a 1 x multiplier, which is very different from online casino sites.

Online Sportsbook Welcome Offers

There will be many generous offers for registering a new online sportsbook account for March Madness, check out the links for your state and pick the best one for you

March Madness Free Bets

How Much is Wagered on March Madness?

As one of the biggest gambling events in the US, you might expect a lot of money to be wagered over the course of the event, but just how many bets does March madness attract?

It is expected that about 20% of American Adults, close to 50 million, will make at least one wager on the March Madness event with a combined value of $10 billion in paid entry pools, land-based sportsbooks, and a growing number of sharps using now legal online betting sites and apps.

Not all of this money will be wagered with online betting sites, as many bets are struck in office pools with an estimated 24 million Americans participating.

The other half will be placing bets with online sportsbooks offering collegiate basketball betting within the state.

40% More Bets than the Superbowl

March Madness betting is bigger than the Superbowl!

March Madness Picks

Everyone has an idea of what bets they want to make on March Madness, which teams or players they think can win them a wager, and there will be many speculative mammoth bracket bets placed.

Some will support and bet on their own colleges, whilst the smarts will look for the value in the betting odds and try to predict the winners to make a steady gambling profit over the course of the event.

Other March Madness betting fans will be looking for college basketball tips from handicappers and betting experts who publish and share their March Madness picks for everyone to see

College Sport Betting Restrictions

In some states there are some restrictions as to how you can wager on collegiate events, in other states there are none.

Restricted Collegiate Bet Types by State

Take a look at the table below for information as to when and where you can bet on college sport. Please check with local government and your online sportsbook in case any of these details change, although it is correct at the time of writing.

New JerseyYesIn-State teams and events
IndianaYesNo prop bets
West VirginiaNone
IllinoisYesIn State college teams
IowaYesProp bets on in state teams
ColoradoYesNo prop bets on non sanctioned events
TennesseeYesNo prop bets
VirginiaYesNo prop bets or in state teams an events

How to Bet on March Madness

If you are betting on March Madness for the first time, or are looking to make your wagers online with the introduction to more states of legal online sports betting then check the table below to see which states now offer legally licensed online sports betting.

Which States Can I Bet on March Madness Online?

Online sports betting is now legal in these states as the online sports betting industry grows in America

What Can I Bet On?

There are a host of potential betting opportunities and legal sports wagers you can make over the 3-week event. Let's take a closer look at the NCAAB betting options and game wagering that's available.

  • Individual Games
  • Bracket Contests
  • The Championship Game

Types of March Madness bets

The sports betting markets may be confusing if you are considering betting online on March Madness for the first time. So let's run through some of the bets you can make, which to aim for and which to avoid on the biggest college basketball tournament of them all.

Popular March Madness Bets

Outside of trying to predict perfect brackets, the more simple the wager the more chance you have of winning your bet. The most popular type of basketball bet will be Moneylines and Game Totals

Most Popular March Madness Bets
Game TotalsMoneyLine
Highest Scoring GameLowest Scoring Game
Highest Scoring TeamLowest Scoring Team

In-Play Live Betting

As one of the most dynamic and fast-paced sports to bet on basketball is perfect for in-play betting and is my favorite event on which to do so.

Being able to watch and bet at the same time adds excitement to the event and you can follow the action and place wagers as the action happens

Betting Brackets for March Madness

The bracket bet is, without doubt, the most popular but equally the most speculative wager that can be made on March madness. But what is it exactly?

A bracket bet on March Madness is generally organized as a pool entry competition whereby you try to predict the outcome of all 63 games in the championship. It is decided on a points system. The probability of a perfect bracket is 9,223,372,036,854,775,808 to 1, which explains why no one has ever predicted it as yet.

9,223,372,036,854,775,808 to 1

Could you beat over 9 quintillion to one odds and pick the perfect bracket?

This is not a sportsbook wager as I am sure you are aware, very few people have never come across bracket pools in the office at a casino or elsewhere.

The way the bracket winner is determined is by a points system. Again, the points system may differ from pool to pool. Generally, later games are weighted more heavily for point scoring, although, there can be added weight for upset underdog winner predictions too.

Once the first round of games is complete, based on the number of correct picks you made, you get a chance to make the second-round picks, the more first-round correct, the more chances you have for round 2 and so on.

If all games were 50/50, which of course they aren't, the odds of landing a perfect bracket would be 9,223,372,036,854,775,808 to 1.

March Madness Betting FAQ's

  • Can you bet on March Madness?

    The best part of the March Madness Tournament is that you can place bets on it in advance on the futures markets and during the tournament. You could bet to see who will make it to Final Four or win National Championship, among other things! Betting online is as easy as opening a new online sportsbook account.

  • Has anyone ever had a perfect bracket for March Madness

    It's tough to get your bracket right without some luck, but one man has managed 39. Dr. Nigl from Columbus Ohio is the first verified person in history that was able to pick through to the sweet 16

  • Is it legal to bet on March Madness online.

    It is legal to bet online in March madness if you are of age, are located in the state in which you want to bet and are using a legally licensed sportsbook within the state

  • Can I bet on March Madness on my mobile

    All Sportsbooks legally licensed in your state will have mobile betting on March madness available. Most bets will be able to make, with the exception of some prop bets which are restricted in some states.

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