Your Guide to Final Four Betting Promos — March Madness 2025

Written By Brad Szalach | Published at April 5, 2025

March Madness 2025 is down to the Final Four, with games set for Saturday and a championship match Monday.

As of April 4, BetMGM, Caesars, and bet365 are offering promos with a potential maximum of $4,500+ to boost your bets on this high-stakes weekend. Here’s everything you need to know about the offers, how to claim them, and tips to maximize your wagers.

Why These Promos Are a Slam Dunk

With only four teams left, every game is a do-or-die moment — perfect for betting on spreads, props, totals, or live action. These promotions give you bonus bets, profit boosts, and safety nets, cutting your risk while upping your potential rewards.

The Best Final Four Sportsbook Promos

BetMGM — First-Bet Refund Up to $1,500

Promo code: THELINES
How it works: Sign up, deposit $10+, and bet on a Final Four game (e.g., Florida vs. Auburn). If it loses, get up to $1,500 back in bonus bets – split into five equal parts for bets of $50 or more (e.g., $100 loss = five $20 bonus bets). Bonus bets expire in seven days.
Best for: Bets on underdogs like Alabama
Why we like it: A hefty safety net for bold moves without the full sting of a loss.

Up To $1500 in Bonus Bets Paid Back if your First Bet Does Not Win

Bet Now BetMGM Promo

Gambling problem? Call 1-800-GAMBLER or 1-800-MY-RESET (Available in the US) 877-8-HOPENY or text HOPENY (467369) (NY) 1-800-327-5050 (MA), 1-800-BETS-OFF (IA), 1-800-981-0023 (PR). 21+ only. Please Gamble Responsibly. See BetMGM.com for Terms. First Bet Offer for new customers only (if applicable). Subject to eligibility requirements. Bonus bets are non-withdrawable. In partnership with Kansas Crossing Casino and Hotel. Promotional offers not available in Mississippi, New York, Ontario, or Puerto Rico.

Caesars Sportsbook — Bet $1, Get 10 Profit Boosts

Promo code: THELINESDYW
How it works: Register, deposit $10+, and bet $1+. Get 10 tokens that double profits on bets up to $25 (max $2,500 extra per token). Valid for 14 days.
Best for: Parlays or props across the Final Four and championship.
Why we like it: Low entry, high reward — multiple chances to cash in big.

Bet365 – Pick Your Bonus

bet365 Bonus Code: THELINES
Option 1: Bet $5, get $300
- Deposit $10+, bet $5 (odds or -500 or longer), and score $300 in bonus bets, win or lose. Bonus bets expire in seven days.
- Best for casual fans betting totals or spreading bets across games.
Option 2: First-bet safety net up to $1,000
- Deposit $10+, bet $5+, and get a refund in bonus bets if that wager loses, up to $1,000. Bonus bets expire in seven days.
- Perfect for risk-takers chasing a Houston upset over Duke.
Why we like it: Flexible options plus a stellar live betting platform.