Best March Madness Betting Sites, Promos & Odds for 2025 Tournament

Best March Madness Betting Promos

March Madness Odds

The Sweet 16 is set, and there is only one double-digit seed through - North Carolina State. Check out a complete list of the best odds for each Sweet 16 matchup below.

March Madness 2025 Title Odds

After a wild regular season leading into a slew of exciting Conference Tournaments, the field of 68 is now set. Familiar blue bloods North Carolina (+1700) and defending champion Connecticut (+400) locked in No.1 seeds in their regions, as did Houston (+600) and Purdue (+700). They lead the charge atop the March Madness odds list.

There are serious title contenders outside of the 1-line with teams like Arizona (+1200), Tennessee (+1700) and Iowa State (+2000) having odds of +2000 or shorter at the best online sportsbooks.

Bettors have more options than just picking the winner of the Big Dance, however. There are odds posted for each game in the NCAA Tournament, as well as robust futures markets allowing sports fans to bet on such as a team to reach the Sweet Sixteen or win its region. 

With the tournament underway, this is as good of a time as any to check the best sportsbook promo codes to get the most value possible during March Madness.

March Madness Betting

Unsurprisingly, the No.1 seeds have the lowest odds to advance to the Final Four. Connecticut, Houston, Purdue and North Carolina feature four of the top five teams according to the odds for this wager, with No.2 seeded Arizona checking in slightly ahead of North Carolina. 

However, March Madness rarely unfolds without its share of upsets and Cinderalla teams making deep runs and knocking off title contenders along the way. Last year's Final Four was comprised of a No.4 seed (UConn), two No.5 seeds, and a No.9 seed. 

There are additional March Madness futures markets, though, such as betting on teams to win their region. This introduces a different path for bettors to get exposure to favorable odds without needing the team to win the National Championship in order for the bet to cash.

March Madness Betting Sites Reviewed By Experts

When it comes to sports betting apps and websites, we've got you covered. There are a number to choose from, and we're diving into each and going over what specific March Madness promo code offers are available to you.

March Madness Betting Apps Rated

NCAA March Madness Betting Promotions

All of these March Madness promotions all have a common theme that they give players a head start on their online sports betting experience with the potential for increased payouts. However, each have their own unique features that deliver different types of bonuses to players. Here are examples of the types of March Madness promotions available.

Bet Credits

Synonymous with bonus bets, bet credits allow players to take bonus funds and split them up however they prefer. Rather than getting four $50 bonus bets, for example, bet credits allow players to take that $200 in bet credits and split them up any way they'd like: 200 $1 bonus bets, a single $200 bonus bet or anything in between. Sports fans in North Carolina can now take advantage of bet credits and other promotions available on North Carolina betting apps with the state launching on March 11.

Deposit Match Bonuses

The more you deposit, the more you earn with these types of March Madness betting promo opportunities. March Madness betting sites will match your deposit amount (sometimes as much as 100%) in form of bonus bets that then have just one-time playthrough requirements. A guarantee of bonus bets is always a good option for new players.

No Deposit Bonuses

No-deposit bonuses provide players with bonus bets that do not require you to deposit funds or play any of your own money. The bonus bet amount is not included in any winnings and can't be withdrawn, so you'll need to play the bonus bet in order to earn cash profit, but it's a great bonus when college basketball betting sites offer them. Often these are offered when a new state is launching betting as a preregistration bonus.

Parlay Insurances

When it comes to college basketball betting promos, insurance is great in case your parlays don't pan out. When this promotion is offered by March Madness betting sites, losing bettors will receive a bonus bet in an equal amount of what they wagered (usually capped at $5 or $10). The hope is bettors won't need the insurance, but it's great to have as a fallback option if your bets come up short.

Odds Boosts

These March Madness promotions increase your potential payout. For example, an odds boost that turns +150 odds to +200 odds means a $100 wager pays out $200 in profit instead of $150. Nothing changes for the bettor other than the potential profit he or she can earn from a wager.

Contest Offers

Many March Madness betting sites provide players with free-to-play contests that pay out real cash prizes. Other March Madness bonuses like this include wagering on a team to win the national title and earning a bonus bet for each NCAA Men's Basketball Tournament they win.

March Madness Bet Types

There are a number of different bets that players can make. Below are the ones that we believe players will use most often.

Moneyline

This is a wager on which team will win the game outright. Point differential and total points do not come into play with the moneyline. Favorites such as Nos. 1, 2 and 3 seeds cost more to bet on (-400, for example, means a $400 earns $100 in profit), while underdogs pay out more (+350, for example, means a $100 bet earns $350 profit). Given the upsets during March Madness, there's real value here if you can predict them.

Point Spreads

Point spreads even the playing field between a favorite and underdog. While a No. 16 seed is highly unlikely to ever beat a No. 1 seed (sorry, Purdue and Virginia fans), the spread is the presumed point differential expected in the game. A No. 16 seed whose spread is +24.5 would cover if it loses by 24 or fewer points (or wins the game outright). That top seed would cover -24.5 if it win by 25 or more points.

Totals

Oddsmakers set a total predicting the combined score of two teams, and bettors then wager on whether the final score will be over or under that set number. With late 3-point barrages and fouling toward the end of games, these are some of the most fun NCAA Tournament odds to wager on during the NCAA men's basketball tournament.

Futures

These are college basketball odds on season-long outcomes such as national champion, Naismith Player of the Year, Big East champion and conference champions such as Duke to win the ACC. Futures odds to win March Madness are constantly changing throughout the year, and bettors can wager on them up until the outcome is final.

Parlays

These are a combination of two or more individual wagers that produce increased odds. However, all individual bets must be successful (or push) for the parlay to pay out. Even a parlay that has seven winners and one loss pays out $0, so you'll need to feel confident in your picks when placing them.

Player Props

These are wagers on individual statistical occurrences within a specific game. The most popular player props include points, rebounds, assists, or a combination of the three. There are also odds Madness on the player to score the first basket of a game or one player to score more than another during a matchup. Keep in mind many states do not allow prop bets on college athletics.

Team Props

These are wagers on team statistical occurrences within a game. Examples include choosing which team will score 10 points first or over/under total of points a team will score. These odds Madness betting sites are less popular than player props, but there's value here if you feel confident in a team's performance.

In-Game Live Betting

March Madness odds don't close up once the games begin. All March Madness betting sites will have live odds on the moneyline, spread and total throughout the duration of the game. Considering the wild runs and chaotic finishes that March Madness has every year, you'll want to stay on top of these live odds to find great value of the games you're watching.

Sign Up and Bet on March Madness Odds

There may not be a better sporting event in the world than March Madness as far as online sports betting is concerned. With 67 games in a single elimination tournament, buzzer beaters, backdoor covers and improbable outcomes all make for a stellar betting experience.

No matter what your favorite team's odds to win March Madness look like, there's something for everyone with the various March Madness online betting apps and sites. Take advantage of the incredible offers being handed out now so you're ready to roll once the bracket is revealed and hundreds of March Madness odds are listed.