Best March Madness Betting Sites 2025

Top March Madness bonuses and promos

Editor's Note: Bonuses are for U.S. residents only

Ready for the 2025 NCAA Tournament? Below, you'll find all the best March Madness betting promos in the country.

Features at the best March Madness betting sites

bet365 March Madness betting bonus 🟢

Canada's Most Popular Sportsbook

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Despite bet365 being legal in just ten states, the sportsbook continues to gain notoriety in the U.S. via an impressive product headlined by a bet $5, get $150 in bonus bets new-user welcome offer. Here are the details you need to know:

• Use the bet365 bonus code SBRBONUS to claim the sportsbook’s active sign-up bonus. However, if you reside in Louisiana, you'll need to click here.
• Following sign-up, you must deposit $10 or more. Then, you'll have 30 days to place a $5 qualifying bet on any sports market. Regardless of your wager's outcome, you'll receive $150 in bonus bets.
• Your qualifying bet must have one selection with odds of -500 or greater.

If the bonus bets welcome offer doesn't entice you, bet365 has a high-roller alternative: up to $1,000 first bet safety net. You can only use one of the two offers, though, so choose carefully. 

Ensure you dig through our bet365 review to get a full picture of the sportsbook and one of the best sportsbook promos out there.

DraftKings March Madness betting bonus 👑

Fan-Favorite Betting App

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DraftKings Sportsbook is running a bet $5, get $150 in bonus bets welcome offer for new customers. Here are its key elements:

• No DraftKings promo code is required to obtain the bonus.
• After registration, you must make a $5 minimum deposit and initial wager of at least $5 on any sport.
• Receive $150 in bonuses instantly, regardless of the outcome of your qualifying bet.
• The bonus will be sent as six (6) $25 bonus bets.
• One qualifying wager per customer.
• Bonus bets cannot be cashed out or transferred and expire after seven days.
• Offer expires March 16, 2025.

If you're interested in learning more about the sportsbook, read our DraftKings review.

FanDuel March Madness betting bonus 🔵

Same Game Parlays

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New users at FanDuel are eligible to claim a bet $5, win $200 in bonus bets welcome offer. Just download the app and make a minimum $5 deposit - no FanDuel promo code required.  Then, place a wager of $5 or more on any betting market. If your bet wins, $200 in bonuses will enter your account within 72 hours of wager settlement.

• Minimum deposit and bet of $5 must be made on any available market.
• If your bet wins, you'll be credited $200 in bonus bets.
• Bonus bets can be split up however you like, but expire in seven days.

Check out our FanDuel review for further information.

Caesars March Madness betting bonus 🏛

Excellent Live Betting Platform

Caesars is a 21+ product

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Caesars Sportsbook continues to be a behemoth amongst online betting sites. It makes sense, then, that its March Madness welcome offer for new customers is among the most lucrative in the nation — Bet $1, get 10 100% profit boosts. Consider these conditions before nabbing the offer:

• You must use the Caesars Sportsbook promo code — SBRBONUSDYW — to claim the bonus.
• Place your first bet pf $1+ on any sports market.
• Caesars will add 10 100% profit boosts to your account.
• The maximum bet allowed per token is $25.
• The maximum additional winnings per token is $2,500
• Profit boosts expire after 14 days and have no cash value.

Dive into our Caesars review for more actionable intel.

BetMGM March Madness betting bonus 🦁

Live Betting Odds

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BetMGM tenders new customers a prolific March Madness betting experience, topped by up to $1,500 in bonus bets if your first bet loses. Keep these important terms in mind when you sign up for an account:

• BetMGM bonus code SBR1550 is necessary here.
• Make a first deposit of $10 or more and place your initial bet on any sports market.
• If your bet loses, you'll be fully reimbursed via bonus bets, up to $1,500.
• Losing bets of less than $50 are credited as a single bonus bet.
• Losing bets of $50 or more are credited in five 20% chunks.
• You will have seven days to use the bonus bet(s), and they will appear in your account within 24 hours of your losing wager settling.

Read our BetMGM review to gain a more thorough understanding of the sportsbook.

ESPN BET March Madness betting bonus 🏈

Doing your NCAA March Madness betting at ESPN BET means you're eligible to acquire the sportsbook's bet $10, get $100 in bonus bets welcome offer, and a 200% first deposit match up to $500 — so long as you're a first-time user. Ensure you're aware of the following terms associated with the offer before jumping in:

• An ESPN BET promo code isn't required to snag the sign-up offer.
• Following registration, you must deposit at least $10.
• You will have seven days to utilize the bonus bets, or they will expire.

Take a look at our ESPN BET review for expert analysis. 

BetRivers March Madness betting bonus ⚡

Large Player Prop Selection

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Up to a $500 second-chance bet awaits first-time users who opt to register with BetRivers to do their March Madness betting. Although this is one of the more straightforward welcome offers available, its still worth keeping the following in mind:

• Input the BetRivers bonus code — SBRBONUS — during sign-up to redeem the bonus.
• You must make a first deposit at least $10. Then, place a qualifying bet — should it fail, BetRivers will credit you the amount lost, up to $500, as a lone bonus bet.
• The bonus bet must have final odds of -200 or greater.
• You will receive the bonus within 24 hours of your losing wager settling, and you will have 30 days to use it.

Explore all of the sportsbook's features in our BetRivers review.

How to bet on March Madness

Even the most prolific sportsbooks don't always make the registration process clear. Below you'll find a step-by-step guide outlining how you go from signing up with your preferred March Madness betting site to making your first wager.

1. Select a sportsbook and register online

First, you'll need to select a preferred sportsbook—any of the options listed on this page will do. Once you've done this, locate a "Create an Account" or "Sign Up" button on the site or app's home page and fill in the required information. You'll need to enter your full name, mailing and email address, date of birth, and more.

This is also where you will be asked to enter a promo code. Not all welcome offers require a promo.

2. Deposit and claim a bonus

Following the creation of your new sportsbook account, you'll need to deposit some funds before you can do any online betting. Pinpoint the cashier — often conveniently found at the top or bottom of a betting site's home page — and scroll through all available banking methods until you find your desired choice. All of the best March Madness betting sites will feature the most popular options, from credit and debit cards to PayPal.

3. Select and finalize your bet

With funds in your account, you're ready to make your first bet. Take your time and thoroughly search the sportsbook's betting menu until you land on a market that suits you. Input the amount you wish to wager and then confirm the transaction. You'll notice the wager appear instantly in your bet slip. This is where you can view the wager's potential payout.

4. Withdraw your payout

Few things are as thrilling as watching one of your big wagers hit, and there's a good chance you'll want to withdraw your winnings immediately. Head to the same cashier section used for deposits and choose the "withdrawal" option to start the process. Simply enter the amount you want to take out and the banking method you prefer to use. Generally, it takes one to five days for a withdrawal to complete.

March Madness betting summary

March Madness betting odds

March Madness odds aren't just popular in March. Avid NCAAB bettors will place wagers on college basketball odds year-round, from Final Four odds to championship game odds and everything that comes before. If you think you have what it takes to pick a great March Madness bracket, or you know your picks will be disastrous, apply to be the Master of March Sadness to earn $2,000 during this tournament.

Here's a look at the teams with the top odds to win the 2025 NCAA Tournament (last updated March 13, 2025):  

Popular bet types and formats at March Madness betting sites

Learning how to bet on March Madness involves deciding on a preferred format. One of March Madness' most popular betting formats is the bracket challenge. This is when a bettor essentially predicts the outcome of every game in every round, including the championship game. You can join in the fun by downloading our free printable March Madness bracket and making your own selections.

No one in history has ever verifiably picked a perfect bracket — if you're daunted by the idea, we have a guide on how to fill out a March Madness bracket — meaning the winner is the bettor who turns out to be the most correct. The best-ever March Madness bracket streak belongs to an Ohio man who correctly predicted the first 49 games of the tournament in 2019. For those looking to place wagers on more traditional betting markets — such as March Madness prop bets — the most popular options include:

• Moneyline (ex. taking Duke to win at +200)
• Spread (ex. picking Purdue -9.5 at -115)
• Over/Under point totals (ex. choosing over 145.5 points in Auburn vs. Marquette)
• Futures (ex. betting on Cooper Flagg's March Madness MVP odds)
• Props (ex. wagering on a certain player to score over 17.5 points in a single game)

March Madness bracket explained

Every year, the NCAA Division I men’s basketball committee sits down and begins the process of selecting the 68 participating teams. 31 of these teams are automatic qualifiers who earn their inclusion by winning their conference tournaments. The remaining 37 teams are selected as at-large bids based on a variety of factors including record, strength of schedule, and strength of conference. This day is called "Selection Sunday."

From there, teams are strategically placed throughout the championship bracket in a way that strives to achieve as much reasonable competitive balance as possible. After each year’s Division I men’s basketball championship, a comprehensive annual review of the principles and procedures ensures everything is up to standard.

The first round is technically the "First Four," which is a play-in round between the bottom-four automatic bids and the last four at-large teams selected for the tournament. Once the top 64 teams have been officially established, the Round of 64 begins. Following that, the winner of every game advances, and the round of 32 gets underway.

The winner of each game will then go through to the Round of 16, referred to by many as "The Sweet 16." From there, the winners proceed to "The Elite Eight," which is then followed lastly by "The Final Four." Both Final Four games are played on the same day, and the championship game is played two days afterward in early April.

March Madness key dates and developments

March Madness is set to tip off on Tuesday, March 18, 2025, with the start of the First Four. The Final Four will take place on April 5, 2025, in Arizona and will conclude on April 7, 2025, with the national championship game.

Here's a complete list of the key dates to watch for the 2025 tournament:

• Selection Sunday: Sunday, March 16
• First Four: March 18-19
• First round: March 20-21
• Second round: March 22-23
• Sweet 16: March 27-28
• Elite Eight: March 29-30
• Final Four: April 5
• NCAA championship game: April 7

Towards the end of the tournament, we'll also see the College Basketball Crown. This 16-team postseason tournament features schools from the Big Ten, Big 12, Big East, and others that didn't participate in March Madness. 

The College Basketball Crown runs from Mar. 31 to Apr. 6 in Las Vegas and recently partnered with MGM Resorts. BetMGM's parent company will host participating teams at several of its Las Vegas resorts during the tournament.

March Madness betting apps

The college basketball betting landscape can be tricky to navigate because of the variety of rules from state to state. While the best sports betting apps can be used in some regions, others will require you to visit a retail sportsbook to submit a bet slip. College sports betting has become more prominent, but it still isn’t as ubiquitous as wagering on professional sports. Here are some things to consider when using March Madness betting apps:

• Sportsbooks must abide by regulations specific to college sports in each state. This can include, but is not limited to, bans on betting on in-state college teams as well as prop bets.
• The best March Madness betting apps offer popular features, including live streaming — which can come in handy for those who don’t subscribe to sports channels.
• Most sportsbooks will run some kind of March Madness betting promotion throughout the tournament, so it’s important to remember to take advantage of more than one to maximize value.

March Madness live betting

The best March Madness betting sites tend to be the best live betting sites, too. Traditional fixed odds betting requires players to place wagers before the games begin. With live betting, sweating your picks ahead of time morphs into sweating your picks in real time. When participating in March Madness live betting, keep the following considerations in mind:

• Live odds are often boosted during special events, such as March Madness, and taking advantage of them can pay off in spades.
• Live betting often comes with live streaming, providing a convenient way to watch the game via your sportsbook's website or mobile app.
• It can be difficult to prepare for live betting, but having a strong understanding of March Madness betting trends certainly helps.

States with legal March Madness betting

Since sports betting is regulated on a state level, the laws surrounding it change with almost every border crossing. The rules get even more specific when it comes to legal March Madness betting, given the extra stipulations placed upon college sports betting. To find out if you’re old enough to place March Madness bets, please refer to the table below. States where sports betting is not currently legal are not included in the table.

How we rate and review March Madness betting sites

Deciding where to bet on March Madness can be tricky. There are a lot of things to consider and the sheer number of options can be overwhelming. Luckily, we've built our foundation on finding you the best March Madness betting sites. All you need to worry about is which snack to get and where you’re going to catch the game.

While developing the evaluation process, we've managed to zero in on some essential criteria. The best sports betting sites, in particular, need to meet a certain standard to keep up with the increased demand of March Madness wagering. Some of the key performance benchmarks include:

Exclusive March Madness promotional offers 💰

Sportsbooks are well aware of the increased interest in college basketball betting around March Madness, and often prepare to attract their wave of new customers with exclusive March Madness offers. For example, some sites will offer a bracket challenge with a low entry fee and the potential to win a massive cash prize.

Affiliated March Madness sign-up offers 🏀

Most sportsbooks run a sign-up offer all year, and that promotion is often available in combination with whichever March Madness promo is available during the tournament. If a specific sportsbook has two offerings with a lot of value and appeal, there’s typically no rule disallowing users from activating both. The only exception is if a sportsbook’s March Madness bonus is also a sign-up bonus, but most March Madness betting sites will elect to keep those offers separate.

Payout speed 💸

Payout speed, and the speed at which bonus credits from promotions are transferred into account balances, matter more than usual during March Madness. After all, the tournament lasts for under a month, meaning every day spent waiting for a payout or betting credits is a day of missing out on wagering. Most sportsbooks typically have quick payout speeds, but some do not. It’s also important to note which March Madness betting sites will be able to stay consistent under increased consumer demand.

Customer service 📞

Like payout speed, customer service is more important during March Madness as time is of the essence. Knowing which sportsbooks provide the best customer service can make all the difference, especially since some operators don’t offer instantaneous support. For example, some sportsbooks have phone and live-chat support, whereas others simply use social media and/or email.

Common bonuses at March Madness betting sites

New players dipping their toes into the waters of sports betting will quickly find that three types of bonuses dominate the welcome-offer space at March Madness betting sites: Deposit match bonuses, bet and gets, and first bet insurance.

Deposit match bonus

One of the more traditional offers a sportsbook can put forth, a deposit match bonus is exactly what it purports to be. After registering and making an initial deposit with an operator, it will match the amount you put down via bonus funds, up to a certain percentage.

For example, if a sportsbook provides a 100% deposit match bonus with a limit of $500, you could put down $500 in real cash and receive an additional $500 in bonus funds.

Bet and get 

Bet and get offers have become highly popular amongst sportsbooks. Since they are generally low-risk entry points for new bettors, industry titans such as BetMGM and FanDuel will use them to tempt first-timers during big events, such as March Madness. 

The bonus involves placing an initial bet with a sportsbook, usually at a small amount, such as $5. Then, once that bet has settled — typically, the wager does not need to win — you will obtain bonus funds that far outweigh your wager amount. For example, bet365 is running a bet $5, get $150 sign-up bonus right now.

First bet insurance

Long the king of welcome bonuses amongst sportsbooks, first bet insurance permits you to be riskier with your initial wager and try for a big payday immediately. If you win, great — you'll collect your earnings, and the bonus won't activate. Should you lose, the promo will trigger, and the sportsbook will reimburse your stake in bonus funds, up to a specified amount.

For example, if a sportsbook has a $1,000 first bet insurance sign-up offer, you can make a qualifying wager of $1,000, and if it fails, you'll get that amount back. However, it's important to remember that bonus funds must be used to bet further with a sportsbook and cannot be withdrawn or transferred.

Sportsbooks by category

Sports bettors can check out the top sportsbooks for specific sports, leagues, playoffs, and categories in our table below: