Best March Madness Betting Promos for 2025 – Where to Find the Biggest Bonuses

March Madness Betting Promos

March Madness is just around the corner, and the madness isn’t only on the basketball court—there’s insanity (the good kind) with sportsbook promotions!

Every spring, the top betting sites roll out bracket-busting bonuses to bring in fans who want to wager on the NCAA tournament. No-sweat first bets? No problem. Huge deposit matches? They have those, too. Some of the promos are almost as exciting as a buzzer-beater three-pointer (not really, but you get what we mean). In our guide, we are going to tell you where to find the best of the best March Madness 2025 betting promotions. If you’re a new bettor who is looking for a welcome bonus or an experienced gambler looking for odds boosts, our guide breaks down the most worthwhile and biggest March Madness promos!

What (and where) are the biggest bonus offers of 2025? And how do you pick the perfect promo for your March Madness betting experience?

We’ve got them all: FanDuel, DraftKings, BetMGM Sports, ESPN BET, and Caesars Sportsbook, and what each one has on offer!

How to Choose the Best March Madness Betting Promo

First things first: Trying to find the best March Madness promo means knowing what is what in terms of the different types of offers that are out there and knowing what kind of fine print to watch out for. Below is a breakdown of the bonus types and the main factors to consider when choosing a promo that will be perfect for you!

Understanding the Types of Bonuses

There are five main types of bonuses, and they are as follows:

  • No-Deposit Bonuses: These are the rare gems of sports betting—bonuses that you get just for signing up, no deposit required. A no-deposit bonus usually is a small amount of site credit (say $10-$25) given to new users so they can start betting instantly. It’s basically free money to try out the sportsbook.
  • Deposit Match Bonuses: A deposit match means the sportsbook will match a percentage of your first deposit in bonus funds—a 100% deposit match up to $500 means if you deposit $500, you get another $500 in bonus credit. Some books offer a 20% match up to a larger amount (like $1,000), which means you’d have to deposit quite a lot of money to get the full benefit.
  • Free Bets / Bonus Bets: These promotions give you a free bet token or site credit that you can wager with, usually after you meet some condition (like placing a qualifying bet). If your free bet wins, you keep the winnings (but not the stake amount), and these are a staple of March Madness promos. 
  • Risk-Free Bets (No-Sweat Bets): A risk-free bet (aka a “No-Sweat First Bet”) gives you a safety net on your first wager. You make a bet with your own money, and if it loses, the sportsbook refunds you in bonus bets or site credit. If it wins, you keep your winnings as normal, and the promo ends there. But the refund isn’t cash; you have to bet the credits to turn them into withdrawable money, but risk-free promos are a great way to shoot your shot on a bold upset pick since you’ll get a do-over if it doesn’t pan out.
  • Odds Boosts & Profit Boosts: These promos increase the payout on your bets by improving the odds or doubling your profit. Sportsbooks usually run daily odds boosts during March Madness (e.g., improving a team’s odds from +100 to +150 for a certain game) and give out profit boost tokens as part of a welcome offer. A profit boost token will say “+100% profit on your next bet,” effectively doubling your winnings if the bet hits.

Key Factors to Consider

Okay, so when you’re looking over all of the March Madness bonus offers, keep a close eye on the following aspects:

  • Wagering Requirements: This is the catch on almost all bonuses. A wagering requirement (or “rollover”) tells you how many times you need to wager the bonus (and sometimes the deposit) before you can withdraw any winnings. A low rollover (1x or 5x) is friendly; a high one (20x+) means you’ll have to bet a lot. Always read the terms! The lower the wagering requirement? The easier it is actually to benefit from the promo.
  • Expiration Dates: Sportsbook bonuses don’t last forever—bets and bonus credits usually expire within a week or two (7 days is common). Profit boost tokens could putter out even sooner (Caesars’ boosts expire in 14 days). Mark your calendar when you claim a bonus, and make sure you use it before it vanishes. And March Madness itself only lasts a few weeks, so the tournament-specific boosts or offers will expire by the end of the Final Four at the latest.
  • Deposit Limits & Minimums: Pay close attention to what you need to deposit or bet to qualify. Some “Bet & Get” offers only require a minimum $5 or $10 deposit and wager, whereas a deposit match might encourage you to deposit more to take full advantage (e.g., to get the max $1,000 match from a 20% deal, you’d deposit $5,000). Also, take note of the maximum bonus; if a risk-free bet is “up to $1,000” and you bet $1,500 and lose, you might only get $1,000 back, not the full $1,500.
  • Eligible States: Online sports betting is not legal in all states, and each sportsbook operates in specific states. A promo that’s being advertised nationally will only be available to bettors in certain states where that sportsbook is licensed, so double-check that the sportsbook is legal in your state and it isn’t state-restricted.

Now for the fun part! Below are the best March Madness 2025 promotions and where to find them.

Top 5 Sportsbooks for March Madness 2025 Betting Promos

The NCAA tournament is prime time for sportsbooks to put on their game face. We’ve scoured all of the latest offers and picked the top five sportsbooks with the biggest and best March Madness bonuses this year. Each sportsbook that’s listed below has something different to offer, from massive “bet insurance” to boosted odds galore! Next up, we break down the top March Madness 2025 sportsbook promos and how to claim them.

1. FanDuel Sportsbook – Best for No-Sweat Bets

FanDuel is currently the #1 sportsbook in America by popularity, and that’s not surprising as they have a super user-friendly app and a steady stream of promotions to keep things interesting.

FanDuel Square Logo

Promo Offer: Bet $5, win $200 in bonus bets if your first bet wins. New customers who place an initial $5 wager and win will receive an additional $200 in bonus betting credits (if the bet loses, you won’t get the bonus, so pick your team wisely). FanDuel doesn’t require a promo code for its offer; just sign up and bet $5 on any NCAA tournament market to qualify.

Key Details

  • User-Friendly Experience: FanDuel’s app is known for its slick interface and easy navigation, which is perfect for quickly firing off those live bets during a hectic March Madness schedule.
  • No Sweat Promos for Existing Users: FanDuel runs “No Sweat” bets for existing customers on big games—they might refund your stake in bonus bets if one leg of your March Madness same-game parlay fails. This ethos of giving bettors a second chance is why we dub it #1 for no-sweat bets.
  • Wide Betting Markets: You can bet on everything from the tournament winner to individual player props (points, rebounds, etc.) on FanDuel—more options = more fun ways to use your bonus bets.

How to Claim

  1. Sign Up: Visit FanDuel Sportsbook (website or app) and register a new account.
  2. No Code Needed: No promo code is necessary—the $200 bonus bet offer is automatically available for new users in March 2025 (check the promos page to confirm you see the “Bet $5, Win $200” deal).
  3. Deposit at Least $10: Although the bet requirement is $5, you should deposit more (FanDuel typically has a $10 minimum deposit).
  4. Place a $5 Bet on March Madness: Wager $5 on any March Madness game or market of your choice. It can be a moneyline, spread, over/under, etc.
  5. Win and Get $200 Bonus: If your bet wins, FanDuel will credit you with $200 in bonus bets within 72 hours. The bonus will come as site credit, and you’ll have 7 days to use those bonus bets before they expire.

2. DraftKings Sportsbook – Best for Deposit Matches

DraftKings’ welcome package is a slam dunk for those who are looking for both instant bonus action and a long-term boost. It’s perfect if you’re planning to bet through the entire NCAA tournament and into the NBA playoffs, as that deposit match will keep rewarding you!

DraftKings Square Logo

Promo Offer: Bet $5, Get $150 in bonus bets (win or lose) + 20% Deposit Match up to $1,000 + a $50 bonus bet on first deposit. It’s a multi-part promo that has something for everyone.

  • Deposit at least $5 and place a $5 wager on any game, and you’ll instantly get $150 in bonus bets, win or lose. Those $150 are paid as six separate $25 bonus bets.
  • DraftKings also matches 20% of your initial deposit amount, up to $1,000 in bonus funds. To get the full $1,000 match, you have to deposit $5,000 (because 20% of $5,000 is $1,000). Smaller deposits will get a smaller match accordingly, and the deposit match funds release gradually as you bet (this is part of the playthrough requirement).
  • On top of that, an exclusive extra: Some users are also getting a $50 bonus bet with their first deposit (this is basically a free $50 bet just for depositing some money)

Key Details

  • Largest Deposit Bonus: DraftKings’ 20% up to $1,000 match is the largest deposit-based bonus among major books.
  • DFS and Betting Integration: As a former daily fantasy sports giant, DraftKings has a strong platform with stats, live scoreboards, and free bracket contests. It’s a one-stop shop for all things sports!
  • Ongoing Promos: DraftKings usually features odds boosts and missions (like bet $X on tourney games to get a free bet). During March Madness, expect daily odds boosts on popular matchups and maybe some bracket-related props.

How to Claim

  1. Register an Account: Head to DraftKings Sportsbook online or via their app and sign up. Fill in your personal details, and make sure to use any required promo link. Usually, no promo code is needed (the offers activate by default for new customers, but check if a special link is necessary for the $50 bonus bet part).
  2. Deposit Funds: Make your first deposit. To qualify for all parts, deposit at least $5 (to trigger the bet $5 get $150 and the bonus bet). If you want to maximize the 20% match, consider depositing more. FYI: Only your first deposit counts for the match, so if you’re comfortable, depositing a larger amount initially gets you a bigger bonus—e.g., a $1,000 deposit yields a $200 bonus match, and $5,000 yields the max $1,000 bonus.
  3. Place a $5+ Bet: Bet at least $5 on any March Madness market. There’s not a lot of pressure on this first bet—it can be any team, any type of bet (moneyline, spread, etc.), and it doesn’t matter if it wins or loses.
  4. Get $150 in Bonus Bets: As soon as you place the qualifying bet, DraftKings will credit your account with $150 in bonus bets, usually almost instantly or within an hour. You’ll see these as six $25 bonus bet credits.
  5. Unlock Deposit Match: Your deposit match will track automatically. DraftKings releases the 20% match gradually into your account as you wager. Keep betting, and you’ll eventually unlock all the bonus money up to that 20% of your deposit.
  6. Use Your Bonuses: You have about 7 days to use the $150 in bonus bets before they expire, so spread them out on some nice March Madness lines. Any winnings from those bonus bets will go to your cash balance (no further rollover).
  7. Enjoy Additional $50 Bet (If Applicable): If you got the extra $50 bonus bet on deposit, don’t forget to use it too! It should show up in your account and can be used like a regular free bet—maybe throw it on a longshot Sweet 16 underdog for a big payoff.

3. BetMGM Sports – Best for Risk-Free Bets

BetMGM is a powerhouse that is known for its strong “risk-free” first bet offer, and for March Madness 2025, they’ve made it even bigger. If you’re the kind of bettor who wants to put a sizable wager down on a Final Four pick or a championship future, BetMGM’s promo will give you peace of mind. They’ll insure your first bet up to a hefty amount, so you can take a swing at a big win without the usual fear of losing!

BetMGM Sports Square Logo

Promo Offer: First Bet Offer up to $1,500 (get your stake back in bonus bets if you lose). New customers can lay down their first wager with BetMGM, and if that bet loses, they’ll refund the stake in bonus bets up to a maximum of $1,500. This is basically a risk-free bet up to $1.5k, and it’s one of the largest in the industry!

Key Details

  • High Refund Ceiling: With up to $1,500 protected, BetMGM’s offer is great for those who are confident in a big bet. It’s higher than the typical $1,000 risk-free deals you’ll find elsewhere, marking BetMGM as a top choice for maximizing a one-shot bet.
  • MGM Rewards Integration: A great perk of BetMGM is that your betting activity earns points in MGM’s legendary rewards program. So your March Madness bets can actually help you earn iRewards Points or Tier Credits toward things like hotel stays in Vegas or other MGM properties.
  • Great for Live Betting: BetMGM’s live betting interface is solid, and they usually boost odds for in-play bets during big events. If your first bet is refunded in credits, you can use those on live games as the madness plays out. Plus, BetMGM has a ton of props and alternative lines, giving you lots of flexibility on how to use refunded bets.

How to Claim

  1. Register with BetMGM: Go to BetMGM Sportsbook and sign up as a new user. During registration, it will ask if you have a bonus code—you can use the promo code provided by the offer (like the code SBRBONUS or a state-specific code, depending on where you found the promo) to make sure that you get the $1,500 risk-free deal.
  2. Deposit Required Amount: BetMGM requires a minimum deposit of $10 to qualify. Deposit whatever amount you plan to use for your first bet (up to $1,500 if you want full coverage).
  3. Place Your First Bet: Make your first wager on any March Madness market. To maximize the promo, you can bet a larger amount (e.g., $500, $1,000, etc.), but only bet within your means! The first bet is the one that will be “insured.” One strategy is to use it on a plus-odds underdog or a futures bet to try for a big score since you have the safety net.
  4. If You Win: Fantastic, you win as usual, and the promotion ends (you won’t get a bonus since the bet didn’t lose—the bonus only triggers on a loss). You’ll pocket the winnings and can keep on betting with that money.
  5. If You Lose: Don’t freak out—this is where the promo kicks in. BetMGM will credit your account with 100% of your lost stake back in the form of bonus bets, up to $1,500. According to BetMGM’s terms, if the refunded amount is large, they will split it into multiple credits.

Use Your Bonus Bets: You’ll usually get the refund credits within 24 hours of your bet settling. Once issued, you have 7 days to use these bonus bets. Each bonus bet can be used on any sport, not just college hoops, so you could use some on later March Madness games or even on NBA games, etc.

4. ESPN BET – Best for Boosted Odds

ESPN BET is the newest sports betting platform on the block (launched from the rebrand of Barstool Sportsbook under the ESPN name), and they’re looking to make a splash during their first March Madness. ESPN BET’s promos are already quite generous, especially for those who love odds boosts and integration with the iconic ESPN brand.

ESPN BET Square Logo

Promo Offer: $1,500 First Bet “Bet Reset” (insurance) OR Bet $10, Get $100 + ESPN+ Trial—plus tons of daily odds boosts. ESPN BET actually has a couple of welcome offers depending on your location.

  • In most states where ESPN BET is live, new users can get their first bet insured up to $1,500 (they call it a “Bet Reset”). This works like a risk-free bet: if your first wager loses, you get it back in bonus bets up to $1,500. This is similar in value to BetMGM’s offer, which means that ESPN is serious about competing for the high-value bettors.
  • In some states (like New Jersey, Michigan, Pennsylvania, and West Virginia), the offer is a little bit different: Bet $10 and Get $100 in bonus bets, win or lose, plus a free 30-day ESPN+ subscription trial. The smaller threshold here is nice for casual fans—bet $10, and you’ll get $100 to play with regardless of the outcome, and you can enjoy a month of ESPN+ to stream sports and tournament highlights.

Key Highlights

  • ESPN Integration: As an ESPN-branded platform, you get slick integration with ESPN’s app or website. The synergy means you could get betting tips or content alongside your wagers. Plus, the free ESPN+ trial is a sweet add-on for sports content lovers.
  • Odds Boost Heaven: ESPN BET is really leaning into odds boosts. They have a dedicated boosts page and have multiple boosts per day across sports. For March Madness, it could mean consistently better payouts on popular bets.
  • New User Experience: Since ESPN BET is newer, their app interface is modern and built off feedback from Barstool’s platform. It’s designed to be user-friendly for sports fans who are new to betting. And they might just roll out special promos to attract and retain users, so keep an eye out for bracket contests or free-to-play games that convert to bonus bets.

How to Claim

  1. Download the ESPN BET App or Visit Site: Sign up for an account. If you have an ESPN.com account, you might be able to link it, but you’ll still need to go through the betting account registration and verification (ID, address, etc.). It will ask for a promo code during signup—use the latest code for the offer you want.
  2. Decide Your Promo Path: If you’re in a state where only one offer is available, you’ll get that by default. If you somehow have an option (unlikely, as it’s usually determined by state), choose the one that suits you. Big bettor? Go for the $1,500 insurance. Small bettor? The $10 for $100 is a no-brainer.
  3. Make a Deposit: Deposit the amount you plan to bet. The minimum is $10 for the smaller offer but make sure that you deposit at least the minimum required to trigger the bonus (likely $10 either way).
  4. Place Qualifying Bet: For the Bet $10, Get $100: Bet $10 (or more, but at least $10) on any March Madness line. Once you place it, you’ll get $100 in bonus bets credited, usually after the bet settles (win or lose, you’ll get it). 
  5. For the $1,500 Bet Reset: Place your first bet as normal (you might want to bet a higher amount if you want to take full advantage of the insurance). If it’s up to $1,500, you’re covered. If it’s over $1,500, the $1,500 is the max refund, so you’d be partially exposed on any amount beyond that.
  6. Get Bonus: Depending on the promo: If your insured bet loses, you’ll get that stake back in ESPN BET bonus bets (credited as one or multiple free bets equal to the amount lost). If your $10 bet promo is active, you’ll get $100 in bonus bets (likely broken into smaller increments, like 4 x $25).

5. Caesars Sportsbook – Best for VIP Players & Rewards

Caesars Sportsbook is tailor-made for regular bettors and high rollers who want not just bonus bets but real-world rewards. Their March Madness promo does take a bit more strategy to maximize (using all of those boosts effectively), but it can pay off handsomely. And as always with Caesars Palace, if you treat yourself well (by betting), they’ll treat you well right back.

Caesars Sportsbook Square Logo

Promo Offer: Bet $1, Get 10 x 100% Profit Boost Tokens (Double Your Winnings on 10 Bets). Caesars is currently running a “Double Your Winnings” welcome bonus. The deal is this: sign up and bet just $1, and you’ll receive ten profit boost tokens, each worth +100% on a winning bet. So, for your next ten wagers, Caesars will double any profit you earn (up to a certain cap) when you apply the tokens. The promo is different from the usual free bets but can be super valuable, especially if you hit some winners.

  • Caesars also has an alternate welcome offer in some cases: Bet $1, Get $150 in bonus bets if your first bet wins. This is more like FanDuel’s style (a small bet that pays off a big bonus on a win). But the profit boost offer is the flagship one they’re pushing for March Madness, and it’s really fun because it improves multiple bets instead of just a single one!

Key Highlights

  • VIP Rewards Program: Every bet you make with Caesars earns you Tier Credits and Reward Credits in the Caesars Rewards loyalty program (as long as you’ve linked your account). This is the same program that is used in Caesars casinos. Rack up enough credits, and you can redeem them for free bets, hotel stays, show tickets, and other comps.
  • Profit Boost Value: Those 10 profit boosts can theoretically yield a lot of extra cash if you use them wisely. Caesars gives you a max bet per boost (currently $25 max stake per boost token, minimum $1 stake), and they expire in 14 days. If you consistently bet around $25 on even odds and win, each boost could give you up to an extra $25 profit. In total, that’s up to $250 extra (and actually more if you bet underdogs that pay more).

How to Claim

  1. Register for Caesars Sportsbook: Use the special promo code for the offer—look for a code ending in “DYW” (Double Your Winnings). Enter that code when you sign up or use a promo link that auto-fills it.
  2. Deposit and Bet $1 (or more): To qualify, you only need to bet at least $1. (Yes, just one single buckaroo!) Of course, you can bet more if you want to, but $1 is the minimum to trigger the promo. Deposit a comfortable amount—at least $10 is recommended as a practical minimum deposit on most betting apps.
  3. Place Your First Bet: Make a first bet of $1+ on any March Madness game. This can be any odds, any market. It doesn’t matter if this bet wins or loses for the purpose of getting your profit boosts—the boosts are awarded after the bet is placed (and settled). If you went for the alternative promo where a win gives $150, then obviously try to win that bet—maybe bet on a strong favorite. But you should concentrate on the boost promo for the most value.
  4. Get 10 Profit Boost Tokens: After your first bet is settled (usually within 24 hours), Caesars will credit your account with ten 100% profit boost tokens. You should see them in your bet slip options.
  5. Use the Profit Boosts: For each of your next 10 bets, you can apply one token. When you go to place a bet, there’ll be an option to use a profit boost. Click it, and it will double the net winnings of that bet. FYI: There is a max stake of $25 for using the boost (you can bet more, but the boost only applies up to a $25 stake). You also have to use them within 14 days, so basically, during March Madness.

Pro Tips for Maximizing Your March Madness Bonuses

Snagging a great promo is only the first step! Step two is making the most of it. You want to extract as much value as possible from the bonus offers while watching the tourney. Here are our pro tips to help you maximize your March Madness bonuses and possibly boost your bankroll:

  • Read the Terms and Conditions (Seriously): Yes, it’s boring, but always skim the fine print of a promo before you claim it. Note things like wagering requirements, minimum odds for qualifying bets, expiration times, and any opt-in requirements. Knowing the rules helps you avoid mistakes (like thinking a bet qualifies when it doesn’t).
  • Compare Odds Before Placing Bets: Different sportsbooks have slightly different odds on the same game. If you have bonuses at multiple books, shop around for the best line. Maximizing odds guarantees your bonus bets will yield the highest possible return.
  • Use Free Bets on Underdogs or Long Shots: As we mentioned earlier, free bets and bonus bets are best utilized on plus-money outcomes. Since the stake isn’t returned, you want to aim for a bigger payout. Betting an underdog at +300 or a parlay with longer odds can be a smart move with a free bet. If it loses, you only lose the bonus, but if it wins, you maximize the value. That doesn’t mean you should throw all bonus bets on crazy long shots, but it’s generally better to use them on bets you wouldn’t normally risk your own money on, with nice odds.
  • Leverage “Risk-Free” Bets with Aggressive Picks: If you have a risk-free first bet (like BetMGM or ESPN BET’s $1,500 bet insurance), think about taking a risk on a bet with a higher payout or something you have a strong hunch on but that might be a long shot. The reasoning behind it is this: If you’re getting refunded on a loss, the downside is limited. A lot of experienced bettors use the risk-free bet on something they perceive as +EV (positive expected value) but high variance. Basically, don’t waste it on a super-safe pick—you don’t need insurance for a -300 favorite (and if it wins, you got very little profit).
  • Parlay with Caution – But Use Promos if Offered: Parlays are generally tough (all legs must win), but some promos specifically encourage parlays (e.g., profit boosts on parlays or no-sweat same-game parlay refunds). If you get a profit boost token that applies to parlays or a “parlay insurance” during March Madness, it’s worth taking advantage of! If a book offers “build a 4-leg college hoops parlay, get a refund if exactly one leg loses,” you could try a fun parlay. The main thing is to keep parlays reasonable—maybe 2-4 legs max and only if you genuinely like each bet. When using a boost on a parlay, you multiply the already multiplied odds and that can turn into a really nice payout if it hits.
  • Sign Up for Multiple Sportsbooks: This is a big one, so listen up: Why choose one bonus when you can have them all? It’s totally legal (and common) to have accounts with multiple sportsbooks. In fact, it’s advantageous. You could claim the FanDuel, DraftKings, BetMGM, ESPN BET, and Caesars promos we went over, one after the other. That would give you a nice war chest of bonus bets and boosts (potentially worth thousands of dollars in total offers). Just make sure that you are keeping track of all the promo requirements so you don’t mix them up. And manage your bankroll across books— don’t overextend just because you have a ton of “free” bets.
  • Plan Your Betting Strategy: March Madness is a lot! There are 67 games in the men’s tournament, upsets galore, and back-to-back days of action. It’s a good idea to plan out exactly how you’ll use your bonuses. Maybe earmark your free bets for specific rounds (e.g., use some in the Sweet 16 on underdogs, save some for Final Four). Use profit boosts on games that you feel most confident about (since doubling a profit on a loss does nothing). If you have multiple risk-free bets (from different books), use them on different games or different style bets (one on a spread, one on a future) to diversify. A little strategy goes a long way, and you won’t be firing off bets haphazardly and wasting a good promo!
  • Stay Within Your Limits (Be Responsible): Finally, a pro tip that’s not about maximizing dollars but maximizing enjoyment and minimizing stress: bet responsibly. The promos are there to give you extra fun, not to encourage reckless betting. Stick to your normal unit sizes for cash bets, and treat bonuses as a boost, not something you need to chase. And once you’ve met a promo’s requirements, don’t feel pressured to keep betting if you’ve hit your personal limit. It’s okay to cash out your winnings!

March Madness Betting Promos FAQs

March Madness is wild enough without having to decipher all of the different sportsbook promotions. Free bets, deposit matches, and odds boosts—there’s a lot to keep up with! Look below for the most frequently asked questions we’ve gotten about the topic.

What’s the Best Sportsbook for March Madness Promotions in 2025?

That all depends on what you’re looking for! FanDuel and DraftKings have solid “Bet & Get” deals, and BetMGM and Caesars offer bigger risk-free bets. If you love boosted odds, ESPN BET could be your go-to. The best promo is the one that fits your betting style, so check out a few and see which works best for March Madness.

Can I Use Multiple Promos on the Same Game?

Not usually—sportsbooks don’t let you stack promotions on a single bet, so you’ll have to pick the one that gives you the best value. But you can use different promos on different bets in the same game—like using a free bet on one outcome and an odds boost on another.

Do I Need a Promo Code to Claim These Bonuses?

Sometimes! There are some sportsbooks that apply promos automatically when you sign up, and others require a promo code. If there’s a code, it’ll be listed on the sportsbook’s site or in the promo terms. Always double-check so you don’t miss out!

What Happens if I Don’t Use My Free Bets before They Expire?

They disappear. Poof. Gone. Most free bets expire within a week or two, so don’t let them sit too long. Mark your calendar, set a reminder—whatever it takes so that you remember to use them before they vanish.

Are March Madness Betting Promos Available in Every State?

Nope, not everywhere! Some states don’t allow certain types of promos, and others have restrictions on betting on in-state college teams. If you’re not sure, check the sportsbook’s terms or look up your state’s betting laws.

Conclusion: The Best March Madness Betting Promos Are Waiting – Don’t Miss Out

March Madness is not only one of the most exciting times of the sports year but also one of the best times to be a sports bettor—there are so many special promotions up for grabs. This year, sportsbooks are going above and beyond to offer bigger bonuses than ever. All of the promos can give you a serious edge as you bet on all the Cinderella stories, buzzer-beaters, and Final Four showdowns during the NCAA tourney.

Here’s a quick recap of the best March Madness betting promos of 2025:

  • FanDuel’s easy $200 bonus for a $5 bet
  • DraftKings’s stacked bonus bundle
  • BetMGM’s high-value risk-free bet
  • ESPN BET’s odds boosts and bet insurance 
  • Caesar’s one-of-a-kind profit boosts for double winnings

And last but not least, use those free bets on underdogs, shop lines for the best odds, and always read the fine print. Do that, and you’ll be able to stretch those bonus dollars as far as possible. And most importantly, enjoy the madness! 

This is a once-a-year spectacle, so have fun with it. Bet responsibly, make some bracket picks, soak in the upsets, and hopefully win a few bets. With the right promos in hand, even if your bracket gets busted, your bankroll won’t suffer the same fate.

Please gamble responsibly! If you or someone you know has a gambling problem, help is available: call 1-800-GAMBLER.

Alyssa Waller Avatar
Alyssa Waller

Alyssa contributes sportsbook/online casino reviews, but she also stays on top of any industry news, precisely that of the sports betting market. She’s been an avid sports bettor for many years and has experienced success in growing her bankroll by striking when the iron was hot. In particular, she loves betting on football and basketball at the professional and college levels.