It's been fun. We've had a bunch of crazy upsets already in the 2023 edition of March Madness, with the likes of Fairleigh Dickinson and Princeton advancing at the expense of Purdue and Arizona, respectively. Those were serious bracket-busters. 

If you are thinking about wagering on Saturday or Sunday, you've done the right thing by checking out this article first. The best sports betting apps have fantastic offers right now and all you have to do to claim them is sign up as a new user.

Top March Madness betting promos for Saturday

Let's walk you through how these March Madness betting offers work, and how you can earn the bonuses.

BetMGM Sportsbook March Matchups Betting Promo

The BetMGM bonus code BOOKIES gives new users back up to $1,000 in the form of bonus bets. Sign up for a new account and deposit at least $10 before placing your first bet. 

If it loses, you will get back up to $1,000 in bonus bets. Use this offer from BetMGM Sportsbook to bet on any sport or event, including March college hoops tournaments, and get back up to $1,000 in bonus bets if your first wager loses.

Alternatively, sign up as a new user at BetMGM using the bonus code BOOKIESMARCH for $200 in bonus bets. All you need to do is complete the registration process, then make a $10 pregame wager on the tournament. Whether your bet wins or loses, you'll still get your bonus bets worth $200 from BetMGM.

Caesars Sportsbook March Madness Betting Promo

The Caesars Sportsbook promo code BOOKIESFULL gives new users back up to $1,250 in bet credits for a first losing wager. Sign up for a new account, deposit $20 or more, and then place your first bet. If it loses, you’ll get back up to $1,250 in bet credits, plus 1,000 Tier Credits and 1,000 Reward Credits.

Users in Ohio and Massachusetts should use the promo code BOOKIES1BET to get back up to $1,500 for your first losing wager.

DraftKings Sportsbook March Madness Betting Promo

At DraftKings Sportsbook, new users get $200 in bonus bets for making a $5 wager. Just sign up for a new account, deposit $5, and then place your first wager. Immediately, you’ll get $200 in bonus bets in the form of eight $25 bonus bets.

Use this DraftKings Sportsbook welcome offer ahead of the March Madness tournament today.

FanDuel Sportsbook March Madness Betting Promo

The FanDuel Sportsbook promo code gives new users 10x their first bet up to $200 in bonus bets. Register for a new account, deposit at least $10, and then place your first bet. 

You’ll get back 10x your first wager in the form of bonus bets up to $200, meaning a $20 first bet will unlock the full $200. Take full advantage of this awesome deal ahead of March Madness this year.

For all users, you can Bet The Bracket with a No Sweat bet for up to $100. Opt-in and bet on any March Madness team to win, and get back up to $100 in bonus bets if your bet loses. Only one wager person and the final odds must be -200 or longer (i.e. -150, +100). 

On top of that, get Bracket Parlay Insurance. Once per day, you can make any parlay for between $1 and $25 of at least three legs at +400 or great final odds (i.e. +450, +500). If your parlay loses, you’ll get back up to $25 in the form of bonus bets.

BetRivers Sportsbook March Madness Betting Promo

With the BetRivers promo code BOOKIES, new users can get a second-chance bet for up to $500. Sign up using the promo code BOOKIES, make your first deposit of $10 or more, and then place your first bet. If it loses, get back up to $500 in the form of a bonus bet.

Betway Betting Promo For March Madness

New users at Betway can sign up ahead of Saturday's evening slate and grab a $250 bonus. Make your wager up to $250 and if it loses, you'll get bonus bets back from Betway matching the value of your losing bet (up to $250).

It is that simple. Hit Bet Now below to get started at Betway Sportsbook.