2026 March Madness Betting Promotions: Bonuses, Parlay Boosters, and More Offers

Everygame NCAAB Parlay Boost

Everygame is offering a $50 bonus with no rollover on NCAAB parlay wagers. Members must place a four-fold parlay using March Madness game spreads to qualify for this bonus. You can claim this offer up to 20 times, for a total prize pool of $1,000.

Each parlay placed for this offer must have a minimum stake of $15. Only winning parlays will qualify for the $50 bonus.

BetUS March Madness Bonuses

Not to be outdone, BetUS is offering six different March Madness betting promos for basketball bettors to enjoy in 2026.

• • March Madness Deposit Match: Current members using the code MM175 get a 175% match of up to $2,500. The funds include up to $2,000 in sports and $500 in casino funds, with rollover terms of 14x and 35x, respectively.
  • March Madness Welcome: New members who deposit $100 or more can use the code NEW200 to claim 200% match of up to $1,000. Bonus funds are split evenly between sports and casino funds, with 10x and 25x rollovers, respectively.
  • Bet the First Four: Earn a $100 free play with a 5x rollover by betting $50 or more on each of the first four days of the NCAA Tournament.
  • Earn BetUS Swag: Bet $25 on each of the four rounds for one team to make the Championship Game. If your team makes the Finals, you will win BetUS gear.
  • Double Referral: BetUS’s normal referral bonus, 300% up to $6,000, is doubled during March Madness for qualifying referrals.
  • First Round Insurance: Up to $100 free play refund if you bet on a team to cover and it loses outright in Round 1. Free play funds have a 10x rollover.

The fun does not stop there, either. BetUS offers great 2026 March Madness betting contests, too, including squares and brackets.

BetOnline March Madness Referral

Betting with and against your friends is a major part of March Madness. Thanks to this exclusive March Madness referral bonus, you can get extra bonuses for referring your friends to BetOnline.

Referring members and their friends each receive a 50% deposit bonus, up to $100. This promo also includes a $25 free bet for March Madness wagers awarded to the member who made the referral. You can claim this offer for up to four referrals made between February 27th and March 13th.

Voltage Bet’s March Madness Cashback Promo

Basketball fans can wager with confidence at Voltage Bet thanks to the sportsbook’s March Madness cashback promotion. The rules are simple: if your team is up at halftime and loses in regulation, you get up to $20 back.

Members must have made at least one successful deposit to qualify for cashback offers. Cashback promos are credited to your Voltage Bet account as a free chip and have a 50x wagering requirement.

Bovada’s March Madness Bonus Drops

Betting on every round helps make the NCAA Tournament more exciting, and this bonus from Bovada makes it easier than ever. The March Madness Bonus Drops promo rewards members with bonus funds after each of the first six rounds.

To enter, bet on at least one game in any round to be entered into a prize drawing for up to $100. You can enter the draw every round from the First Four through the Final Four.

Each round has its own prize pool:

• • First Four = $90,000 prize pool
  • First Round = $80,000 prize pool
  • Second Round = $50,000 prize pool
  • Sweet 16 = $30,000 prize pool
  • Elite Eight = $20,000 prize pool
  • Final Four = $10,000 prize pool

In total, Bovada is giving away $280,000 in bonus funds during the promotion. Bonus funds have a 10x sports and 30x casino rollover.

BetWhale’s March Madness Bet Insurance

BetWhale’s March Madness bet insurance offers up to $50 in free bet funds for bettors on the wrong side of a comeback. If the team you wagered on is up by 10 at any point and loses, you get a $50 free bet.

Only pre-game moneyline wagers on teams that lose in regulation are eligible for this bonus. The free bet is credited to your account within 24 hours and can be used on any market in the sportsbook.