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Best March Madness Sports Betting Bonuses 2021

Updated March 31st, 2021
Published March 19, 2021

March Madness is one of the most exciting sporting events in the world, and online sportsbooks offer special betting bonuses worthy of the vaunted NCAA men’s tournament.

With promos like free bets, risk-free bets, parlay insurance, and other types of insurance unique to the tourney, these bonuses will have you on the edge of your seat as you track each game closely alongside your bracket.

The best March Madness sports betting bonuses aren’t necessarily the ones offering the highest potential payouts. Look for promos that take your immersion in the games to a whole new level.

The sportsbooks usually offer new promotions for each round of March Madness, so we’ll keep this guide updated as the tournament rolls along past the first round.

Keep reading for more details on the best March Madness bonus offers in 2021.

Bonus offer availability varies by location and changes frequently. Please consult each sportsbook directly to confirm the availability of the bonus offers featured on this page.

Overview of the Best March Madness Betting Bonuses

Here’s a quick rundown of the best promos for the men’s basketball tournament, with links to help you get started:

Sportsbook March Madness 2021 Bonus Available In Get Started
DraftKings New Users – Bet $1, Win $100 CO, IA, IL, IN, MI, NJ, PA, TN, VA, WV Visit
FanDuel New Users – Bet $5, Win $200 CO, IA, IL, IN, MI, NJ, PA, TN, VA, WV Visit
FOX Bet Bet on Basketball – Daily $10 Free Bet CO, NJ, PA, MI Visit
PointsBet New Users – Bet $20 & Get $150 in Free Bets If a Point Is Scored! CO, IA, IN, IL, MI, NJ Visit

Let’s get into the details and some of the terms for these March Madness bonuses.

March Madness Bonuses Explained

March Madness promotions have specific terms and conditions, and we always recommend you read the fine print before placing a bet. The availability of these bonuses differs based on where you’re betting from, but we’ll let you know where bettors can find each of these promos.

DraftKings – Bet $1, Win $100

Here’s a promo with some serious value, even for those of us who don’t want to risk much of our bankroll on a single game. From the Sweet 16 on, DraftKings is offering a ridiculous promo that allows new customers to win $100 while risking no more than a single greenback.

How it works:

  •  Promotion period from 08:00 a.m. ET on 3/23/21 to tipoff of the CBB National Title Game on 4/5/21
  • All CBB Sweet 16, Elite 8, Final 4, National Championship Game
  • First time DraftKings depositors only
  • Make a deposit of $5+ into your Sportsbook account
  • Following deposit, visit the landing page from the Sportsbook Promos page and pick your game by clicking the ‘BOOST THIS EVENT’ next to the event of your choice.
  • Please pick wisely, you CANNOT change your boosted game once you have clicked ‘BOOST THIS EVENT’
  • Following game selection, you’ll be issued with a single use odds boost for the event you pick. The boost is for +10000 (100-1) odds
  • Make sure you have made your qualifying deposit first and are logged in when you choose your game. Refresh if the boost doesn’t appear at first
  • Apply your boost to the team in the matchup you want by adding that team’s money line to your betslip and applying the boost. Your FIRST bet with the boost is your qualifying bet
  • Max bet $1
  • 1 bet per user
  • Excludes live bets, parlays, cash out bets, free bets, and voided bets
  • Must be in CO, PA, IN, IA, NJ, IL, MI, VA, TN, or WV

FanDuel – Final Four Odds Boost (Bet $5 to Win $200)

FanDuel has a tremendous bonus offer for new customers who want to bet on a Final Four game in 2021. You can win $200 on a $5 bet with this promo, which is the equivalent of 40/1 odds!

How it works:

  • Register your new account with FanDuel
  • Make your first deposit of at least $10
  • Place your first bet up to a maximum of $5 on any Final Four game
  • You win $200 if your $5 bet hits
  • Available on the FanDuel sportsbook app
  • Users who claim this will not be eligible for any other welcome offers
  • Must be in CO, IA, IL, IN, MI, NJ, PA, TN, VA, or WV

This promo offers a ton of value to new bettors, so make sure you take advantage if you’re signing up with FanDuel for Final Four games.


FOX Bet – Bet on Basketball (Daily $10 Free Bet)

The March Madness bonus from FOX Bet gives you the chance to earn a $10 free bet every day a game is played.

There are 11 game days scheduled for March Madness 2021, so you could get up to $110 in free bets over the course of the tournament just for wagering with FOX Bet.

How it works:

  • Opt-in to the promotion on each game day using the “Challenges” window
  • Place a minimum bet of $10 on an eligible March Madness game
  • Qualifying games will be updated daily on the “Promotions” page
  • Minimum odds requirement of -200
  • $10 free bet bonus is awarded instantly
  • Limit of one free bet bonus per game day
  • Free bet must be used on another game that same day

This promotion is available to bettors in Colorado, New Jersey, Pennsylvania, and Michigan, and it runs from March 18 through April 4, 2021.

Overall, the FOX Bet offer is an engaging bonus that will have you more invested in the games throughout the tournament.


PointsBet – Bet $20 Get $150 in Free Bets If One Point Is Scored

This promo from PointsBet is available to new customers, and it’s basically automatic. All you have to do is bet $20 dollars on the moneyline or spread line of any NCAA tournament game, and you get $150 in free bet bonuses if one point is scored in the game!

How it works:

  • Register your account with PointsBet
  • Make your first deposit of $20
  • Place a $20 bet on the moneyline or spread line of any NCAA men’s tournament game
  • You win $150 in free bets if a point is scored
  • Your bonus funds will arrive 12-24 hours after the game
  • Must be in CO, IA, IN, IL, MI, NJ

There’s a lot of uncertainty and upsets during March Madness, but this is a bonus offer you can take to the bank if you’re a new customer signing up with PointsBet.


Use Sports Betting Bonuses to Wager with Confidence

Bonus offers are some of the best resources to help you bet on your favorite games with confidence. At Sports Betting Dime, we have all the details you need on the plethora of promotions from legal sportsbooks.

Be sure to check out our ‘Bonuses’ section for all the latest and greatest promos. We also have comprehensive guides on the different kinds of bonuses available at online sportsbooks.

We hope you enjoy the return of March Madness in 2021!


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