18+ Guide To Betting On March Madness

March-Madness IconThe odds to win the NCAA Tournament for Men’s Division I College Basketball come in many forms, but they typically only offer a list of the top teams and their chances to win it all in a given year. While the future odds for college basketball may provide a glimpse of who the eventual NCAAB national champion will be, our 18+ guide to betting on March Madness can provide the assist to predict your bracket winners.

Read on to discover the top 18-and-up college basketball betting sites that offer March Madness odds and learn who made the cut to earn a spot in our elite online sportsbooks. We also explain what types of odds are offered for March Madness and provide information to round out your basketball betting strategy.

Best 18+ Online Sportsbooks Offering 2023 March Madness Odds

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What Is The March Madness Tournament?

Once the conference tournaments have been completed, 68 college basketball teams are selected to compete in March Madness to try and earn a National Title.

There are 32 automatic bids to the NCAA Men’s College Basketball Tournament via conference titles or tourney wins, and there are another 36 at-large bids that are based on overall record, quality wins, and historical performance.

Once selections are complete, the tournament field is then set, with the opening round featuring the first four games in a fight to earn a spot among the final 64.

The round of 64 narrows to 32, then the Sweet 16 narrows to the Elite 8. The Final Four consists of the tournament semifinals, and then March Madness concludes with the NCAA Men’s College Basketball National Title Game.

March Madness Betting Tips For 18 & Up

Our main college basketball betting page has all the info you need for standard game bets, but the following areas point out the strategies and best practices for eighteen year old’s to lay action on the odds to win the NCAA Tournament in 2023.

Avoid Betting On Your Alma Mater – There are 68 teams in play for the NCAA Men’s Division I College Basketball National Championship each year, so temper your expectations when wagering on your favorite team or the college that you graduated from unless they are one of the schools featured in the historical data below for all-time appearances and titles.

Study The Underdogs – 15-seeded teams manage to win their game against the 2-seed quite often, and the money line odds offered on said underdogs have provided massive cash winnings in the past. The question is not if an underdog will win during March Madness, it’s when, so be sure to bet on a longshot from time to time.

Shop The Odds – Belonging to only one NCAA college basketball betting sites site will limit your options and, worse, minimize your potential earnings. Joining up with multiple online over-18 sportsbooks allows gamblers to seek out the most beneficial money lines odds that pay out the best.

Betting Bankroll Management – Whether you are betting on the Sweet 16 or exploring the Final Four odds, you’ll need some cash to wager on the games. Budgeting your bankroll by setting a 3% maximum bankroll limit per game ensures a full Tournaments’ worth of action.

2023 March Madness Bracket

Bracket for betting on March Madness

Schools With The Most All-Time March Madness Appearances

  • Kentucky – 58
  • North Carolina – 50
  • Kansas – 48
  • UCLA – 47
  • Duke – 43
  • Syracuse – 40

Most All-Time NCAA Men’s Basketball National Championships

  • UCLA – 11
  • Kentucky – 8
  • North Carolina – 6
  • Duke – 5
  • Indiana – 5
  • UConn – 4

March Madness Betting Apps

When March Madness games are on, it’s time to gather and socialize, and if you feel like betting on college basketball, it’s just a few clicks on your smartphone or tablet. Just visit one of the sites above using your handheld device, and March Madness betting apps appear without even visiting the download store.

That’s because these web-based apps operate using mobile browsers for the quickest access to the world’s top March Madness betting lines. Lay some action on Elite 8 betting odds from courtside or poolside with these sleek NCAA Tournament betting apps.

How To Bet On March Madness Online At 18

  1. Browse through each of the online college basketball betting sites listed within this guide and shop the odds to see what each has to offer. Consider joining more than one so that variances in the March Madness odds can be exploited to your advantage.
  2. Click the signup or join icon and fill out your account profile.
  3. Fund your March Madness betting account with cryptocurrency (or USD if you don’t mind wait times).
  4. Locate the college basketball betting section and wager on March Madness futures, props, and game lines.

March Madness Bracket Contests

The odds to predict all match-ups in the March Madness Tournament is nearly impossible in the realm of probabilities, but it can be done, and 18+ bettors will always keep trying.

There are many websites that feature Men’s Tournament bracket challenges that can be entered for free or high-stakes contests that award large prize pools to the bettor who finished with the best bracket.

Some of the most popular free March Madness contests are offered by ESPN and CBS Sports, but there are several dozen to choose from, and we advise filling out as many as you have time for.

While the actual odds of predicting a perfect bracket for March Madness by a knowledgeable 18 & up is nearly a mathematical impossibility, don’t let that stop you! There are many contests that simply award for the bracket that is the most accurate out of all that were submitted.

What Are The Odds Of A Perfect Bracket?

There is no evidence that suggests a perfect March Madness bracket has ever been submitted, so until it happens, it remains technically “impossible.” The mathematical probability of a perfect NCAA Tournament bracket is 1 in 100+ billion if using educated guesses, and is exponentially lower than that if choosing winners randomly.

Sportsbook Banking Options

Offshore sportsbooks cater to 18 and over bettors by offering a large variety of deposit and withdrawal options. The following banking methods can be found at the March Madness betting sites that we recommend in the table above.



*Cryptocurrencies like Bitcoin are the only option that will allow you to withdraw your winnings in less than 24 hours.