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

Play Now BetMGM Promo

Gambling problem? Call 1-800-GAMBLER (Available in the US) Call 877-8-HOPENY or text HOPENY (467369) (NY) Call 1-800-327-5050 (MA) 21+ only. Please Gamble Responsibly. Call 1-800-NEXT-STEP (AZ), 1-800-BETS-OFF (IA), 1-800-981-0023 (PR). Rewards are non-withdrawable bonus bets that expire in 7 days. In partnership with Kansas Crossing Casino and Hotel. See BetMGM.com for Terms. US promotional offers not available in DC, Mississippi, New York, Nevada, 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.

Up to $250 Bonus Bet
Code: TLCSPO20X Copied!

Play Now Caesars Promo

21+ New users only. Must register using eligible promo code. First bet after registration must qualify. Max. Bonus Bet: $1,000. Bonus Bet expires 14 days after receipt. Void where prohibited. See Caesars.com/promos for full terms. Gambling Problem? 1-800-GAMBLER (1-800-426-2537)

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.

Bet $5 & Get $150 in Bonus Bets Win or Lose
Code: THELINES Copied!

Play Now Bet365 Promo

Whatever the moment. It's Never Ordinary at bet365. That's why if you sign up now you will receive $150 in Bonus Bets Win or Lose when you bet $5! Minimum $10 deposit required. Minimum odds -500 or greater. Bonus Bets wager excluded from returns. New customers only. T&CS, time limits and exclusions apply.GAMBLING PROBLEM? CALL OR TEXT 1-800-GAMBLER (AZ/CO/IL/IN/KS/KY/LA/MD/NC/NJ/OH/PA/TN/VA) or 1-800-BETS OFF (IA). 21+ (18+ KY). Must be present in AZ/CO/IA/IL/IN/KS/KY/LA (select parishes)/MD/NC/NJ/OH/PA/TN/VA.