March Madness Odds Boosts & Betting Promotions for Existing Users: Best Wednesday Offers

Ahead of the tip-off of March Madness on Thursday, we're rounding up all of the best odds boosts and betting promotions for existing users!

Esten McLaren

Last Updated: September 11, 2024 2:52 PM EDT • 4 minute read

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'Tis March Madness eve and the final two spots in the field of 64 will be earned Wednesday night, but we're looking ahead to the real thing with our collection of the top March Madness odds boosts and betting promotions from our best March Madness betting sites.

By now, you've torn apart the March Madness odds and likely made your March Madness bracket predictions. With all those wagers ready to go, now's the time to scout out the best March Madness odds boosts and betting promotions to squeeze a little extra value out of the sportsbooks.

They say the house always wins, so it's only fair to make it pay as much as possible on your winning March Madness predictions.

Ahead of the opening day of Round 1 on Thursday, we're collecting Wednesday's top March Madness betting promos and the best free bracket challenges.

Best March Madness odds boosts

FanDuel

Offer	Description	Expiry
Promo	25% boost for on First Four bet	Wednesday at 11:59 p.m. ET
Promo	25% boost for one Region Winner or Tournament Champion bet	Thursday at 2 a.m. ET
Promo	Get one no-sweat CBB bet	Thursday at 2 a.m. ET

Up To $3,000 in Bonus Bets

New customers only. Min. first deposit of $5+. Receive 10 No Sweat Tokens, one per day for 10 days in a row. Maximum bonus per Token is $300 each. T&Cs apply.

Claim Bonus

Each product featured on our website has been meticulously researched and selected by our team of experts. If you sign up through our links, we may get a commission.

See our FanDuel review and FanDuel promo code

(21+. Gambling Problem? Call 1-800-GAMBLER)
*Bonuses not applicable in Ontario.

Not intended for use in MA
Affiliate disclosure: Sportsbook Review may receive advertising commissions for visits to a sportsbook

DraftKings

Offer	Description	Expiry	Requirements
Promo	64% boost for one CBB bet	Friday at 11:59 p.m. ET	Opt in
Promo	Bonus bet back if you lose a bet on a double-digit seed's ML

Bet $5, Get $200 in Bonus Bets Instantly

GAMBLING PROBLEM? CALL 1-800-GAMBLER or 1-800-MY-RESET, (800) 327-5050 or visit MA Gambling Helpline (MA). Call 877-8-HOPENY/text HOPENY (467369) (NY).

Please Gamble Responsibly. 888-789-7777/visit http://ccpg.org (CT), or visit http://www.mdgamblinghelp.org (MD), 1-800-981-0023 (PR).

21+ and present in most states. (18+ DC/KY/NH/PR/WY). Void in NH/OR/ONT/PR. Eligibility restrictions apply. On behalf of Boot Hill Casino (KS). Pass-thru of per wager tax may apply in IL. 1 per new customer. Min. $5 first-time bet req. Max. $200 issued as non-withdrawable Bonus Bets that expire in 7 days (168 hours). Stake removed from payout. Plus, upon qualifying bet placement, get 1 100% Profit Boost Token, valid only for a NCAA Tournament Winner bet. Max. Bet: $10. Profit Boost Tokens are single-use and expire on 4/6/26 at 11:59 PM ET. Must select Token BEFORE placing bet. Boost only applies to winnings. Ends 4/6/26 11:59 PM ET. Terms: https://sportsbook.draftkings.com/promos.

Claim $200

Each product featured on our website has been meticulously researched and selected by our team of experts. If you sign up through our links, we may get a commission.

See our DraftKings review and DraftKings promo code

bet365

Offer	Description	Expiry
Promo	30% boost for 3+ leg First Four SGP	Wednesday at 11:59 p.m. ET
Promo	30% boost for one March Madness outright pick	Thursday at noon ET

Bet $10, Get $365 in Bonus Bets Win or Lose*

*Deposit required. Mobile app only. Bonus Bets wager excluded from returns. T&Cs, time limits, and exclusions apply. New customers only. GAMBLING PROBLEM? CALL 1-800-MY-RESET. 21+. Referral Codes are used for marketing/tracking purposes only.

Claim Now

Each product featured on our website has been meticulously researched and selected by our team of experts. If you sign up through our links, we may get a commission.

See our bet365 review and bet365 bonus code

BetMGM

Offer type	Description	Expiry
Promo	Three 64% boosts: 1x anytime bet, 1x live bet, 1x parlay bet	Friday at 9:59 p.m. ET

Up To $1,500 First Bet Offer + $50 in Rewards Points

Bonus bets will expire in 7 days. One new customer offer only. Additional terms and conditions apply.

Claim $1,550

Each product featured on our website has been meticulously researched and selected by our team of experts. If you sign up through our links, we may get a commission.

See our BetMGM review and BetMGM bonus code

Caesars

Offer type	Description	Odds	Expiry
Promo	Kentucky & Kansas to each cover -5.5 spread	+115 to +180	Thursday at noon ET
Promo	64% boost for one CBB parlay	Min. +400 (Opt in)	Thursday at 11:59 p.m. ET

Bet $1, Double Your Winnings On Next 10 Wagers

New users only. Must use promo code. Min. $10 deposit. Bonus is ten 100% Profit Boost Tokens. Max. bet $25 per Token. Max. additional winnings $2,500 per token. Tokens expire after 14 days. Void where prohibited. Full terms.

Claim Boosts

Each product featured on our website has been meticulously researched and selected by our team of experts. If you sign up through our links, we may get a commission.

See our Caesars review and Caesars promo code

SBR's $25K Big Hoops Challenge

Click here for your shot at the $25,000 jackpot and a guaranteed $500 in consolation prizes with our free-to-play Big Hoops Challenge.

March Madness betting promos

March Madness betting promos, offered by sportsbooks during the NCAA Tournament, aim to attract bettors and enhance their experience. These promotions include deposit bonuses, first bet offer, odds boosts, and contests.

Deposit bonuses match a percentage of the initial deposit, while first bet offer allow wagering without risking personal funds. Special contests like bracket challenges add excitement and value, encouraging bettors to engage more with the tournament.

Bettors should explore various sportsbooks to find the best offers and maximize their betting potential during March Madness.

See our best sportsbook promos and March Madness betting promos here.

Here are our best March Madness betting sites:

Caesars Promo Code: SBRBONUSDYW | Read our Caesars Review
BetMGM Bonus Code: SBRBONUS | Read our BetMGM Review
bet365 Bonus Code: SBRBONUS | Read our bet365 Review
BetRivers Promo Code: SBRBONUS | Read our BetRivers Review
FanDuel Promo Code | Read our FanDuel Review
DraftKings Promo Code | Read our DraftKings Review

(21+. Gambling Problem? Call 1-800-GAMBLER)
* Bonuses not applicable in Ontario.

Best Sports Betting Sites | Best Sportsbook Promos (U.S. only)

Written by:
Esten McLaren

Esten is the Content Manager for SportsbookReview.com. He has been in the sports betting industry since the legalization of mobile sports betting in New Jersey, and he has worked with Sportsbook Review before the launch of sports betting in Ontario. In writing and personal betting, Esten focuses on golf and the NFL, while dabbling in futures bets across all major North American sports, looking for edges with long shots. His favorite markets to research and bet include golf outrights and NFL touchdown scorers, where he looks for edges in pricing differences, and player skill sets against the opponent (or golf course). He prefers DraftKings as it is often first-to-market with golf odds each week and next year's futures odds. Esten's previous stops include time with GolfWeek. He previously worked in the fantasy sports industry with FNTSY Sports Network, theScore, and USA TODAY, where he started to build his NFL and golf betting experience. Esten graduated from the College of Sports Media with a diploma in Radio and Television Sports Broadcasting. He has appeared on FNTSY Sports Network, VSiN, and VSiN's Long Shots podcast, where he correctly called Will Zalatoris as the winner of the 2022 FedEx St. Jude Championship. Esten looks at sports betting much like golf and advises beginner bettors to compete against themselves rather than being concerned with what others may or may not be doing based on social media claims.