Now that the round of 64 and the round of 32 has been completed, it’s time for the Sweet 16 in this year’s March Madness college basketball betting tournament. This is where the pressure really increases.

After several favorites moved on to the next round, and after a bunch of underdogs broke through in crazy fashion, it’s now time to watch the next games before the Elite 8 is finalized. 

The top sportsbooks are all offering fantastic March Madness betting promos ahead of the games, so read on and find out all about them below.

The March Madness betting apps we list in this article all have amazing welcome offers for the 2023 March Madness college basketball tournament, so read on below and find out what steps you need to take in order to claim these amazing March Madness promo codes.

Up to $1,500 in Bonus Bets if Your First Bet Loses Promo Code: BOOKIES

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Bonus Bets Expire in 7 Days. One New Customer Offer Only. Must be 21+ to participate & present in OH. In partnership with MGM Northfield Park. Gambling problem? Call 1-800-GAMBLER. Visit BetMGM.com for T&Cs. US promotional offers not available in NY, NV, or Puerto Rico.

$1,000 First Bet on Caesars

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OH only. 21+. New users and first wager only. Must register with eligible promo code. Bet amount of qualifying wager returned only if wager is settled as a loss. Maximum bet credit $1,000; must be used within 14 days of receipt. See Caesars.com/promos for full terms. Void where prohibited. Know When To Stop Before You Start.® Gambling problem? Call 1-800-GAMBLER

Bet $5, Get $200 in Bonus Bets + No Sweat NBA SGP Every Day Of The Playoffs

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Bet $5, Get $150 in Bonus Bets

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Used 40 Times Today

Must be 21+ and present in OH. Gambling Problem? Call 1-800-GAMBLER.

Check Out Betway Here

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Best March Madness Betting Promos & Sign-Up Bonuses

Let's dive in to what's available for this slate of March Madness Sweet 16 matchups:

BetMGM Betting Promo For March

There aren’t many better sportsbooks than BetMGM Sportsbook, and its current bonus offer for new customers is proof why. 

Right now, new users just need to use the BetMGM bonus code BOOKIESMARCH and then bet $10 on any March game to get $200 in bonus bets. You’ll get the bonus bets win or lose, so if you want to bet on college hoops in March, then this is definitely the welcome offer that you’ll want to claim ahead of the upcoming games.

BetMGM Betting Promo Terms & Conditions

1. Register for a new BetMGM Sportsbook account and use the bonus code BOOKIESMARCH
2. Make your first deposit of $10+
3. Place your first bet on any March game for $10 or more in the form of a pre-game moneyline wager to get $200 in bonus bets
4. Your bonus bets come in the form of four $50 bonus bets
5. You get seven days to use your bonus bets at BetMGM Sportsbook
6. Your bonus bets come with a 1x rollover

Up to $1,500 in Bonus Bets if Your First Bet Loses Promo Code: BOOKIES

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Used 28 Times Today

Bonus Bets Expire in 7 Days. One New Customer Offer Only. Must be 21+ to participate & present in OH. In partnership with MGM Northfield Park. Gambling problem? Call 1-800-GAMBLER. Visit BetMGM.com for T&Cs. US promotional offers not available in NY, NV, or Puerto Rico.

Caesars Sportsbook March Madness Promo

The Caesars Sportsbook promo code BOOKIESFULL lets new users get back up to $1,250 in the form of a single bet credit on their first losing wager, plus get 1,000 in Tier Credits and 1,000 and Reward Credits. 

For those users who live in Ohio and Massachusetts, use the promo code BOOKIES1BET instead to get back up to $1,500 in bonus bets. This is an amazing welcome offer, and perfect to use for March Madness Sweet 16.

You can also take advantage of three CBB odds boosts, all of which come with a $100 maximum wager:

• Michigan State, Connecticut & Gonzaga Each Cover -2.5 Spread on 3/23 +650
• Villanova, LSU, Iowa & Ole Miss All Win on 3/24 +625
• Miami (FL), Creighton & Texas All Win on 3/24 +625

Additionally, all customers at Caesars Sportsbook can opt-in and get a 50% CBB Parlay Token to use on a parlay featuring 4+ legs of March Madness games at +500 or greater final odds. The maximum wager is $50, and the maximum winnings you can get from this are capped at $1,000.

Caesars March Madness Promo Terms & Conditions

1. Register for a new Caesars Sportsbook account and use the promo code BOOKIESFULL - or BOOKIES1BET if you are Ohio or Massachusetts
2. Make your first deposit of $20+
3. Place your first bet on any sport, including any March Madness game, and you will get back up to $1,250 in the form of a single bet credit if your first wager loses, or up to $1,500 if you are reside in Ohio or Massachusetts
4. You will get up to 14 days in order to use the single bet credit
5. The bet credit come with a 1x rollover
6. You get 1,000 Tier Credits and 1,000 Reward Credits added to your account

DraftKings March Madness Promos

Over at DraftKings Sportsbook, new users only need to bet $5 on any sports event, including any March Madness game, and you will get back $150 in bonus bets in the form of six $25 bonus bets if your first wager is a winner! Follow the steps below to claim this welcome offer:

DraftKings March Madness Promo Terms & Conditions

1. Register for a new DraftKings Sportsbook account – no actual promo code is required
2. Make your first deposit for $5+
3. Make your first bet on any sport, including March Madness, for at least $5
4. If your first bet is a winner, you will back $150 in bonus bets (six $25 bonus bets)
5. You will get one week to use your bonus bets at DraftKings Sportsbook
6. The bonus bets come with a 1x rollover

Bet $5, Get $200 in Bonus Bets + No Sweat NBA SGP Every Day Of The Playoffs

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Must be 21+ and present in OH. Gambling Problem? Call 1-800-GAMBLER.

FanDuel March Madness Promo

Over at FanDuel Sportsbook, new users can claim a No Sweat First Bet for up to $1,000, which is a truly amazing welcome offer for the tournament. 

This is one of the best March Madness betting promos out there for new bettors, so if you want to bet on college hoops over the next few days, then this is the deal you want to take.

FanDuel Sportsbook also gives all customers Bracket Parlay Insurance for March Madness once per day. Make a parlay featuring three or more legs at +400 or greater final odds (i.e. +500, +600). 

If exactly one leg loses, you’ll get back up to $25 in bonus bets, and you can do this once per day during the March Madness college basketball tournament.

FanDuel March Madness Promo Terms & Conditions

1. Make a new FanDuel Sportsbook account
2. Make your first deposit of $10+
3. Place your first get on any sport and get back up to $1,000 in bonus bets if it loses
4. You get up to 14 days in order to use the bonus bets at FanDuel Sportsbook
5. The bonus bets come with a 1x rollover

Bet $5, Get $150 in Bonus Bets

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Betway March Madness Promo

The Betway Sportsbook promo code offer is also a good one ahead of Sweet 16 and Elite 8 action. 

This lets customers get back up to $250 in bonus bets for their first losing bet, including any March Madness wager. If you’re betting on March Madness, then you want to take advantage of this fantastic deal ahead of the Sweet 16 games.

Betway March Madness Promo Terms & Conditions

1. Register for a new Betway Sportsbook account
2. Then, ppt-in to the promotion, and deposit at $10+
3. Make your first wager on any March Madness game at -300 or greater odds (i.e. -150, +250)
4. If your first bet is a loser, you will back up to $250 in bonus bets
5. You will get up to seven days in order to use your bonus bets at Betway Sportsbook
6. Bonus bets come with a 1x rollover

Check Out Betway Here

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Must be 21+ and present in OH. Gambling Problem? Call 1-800-GAMBLER.