Sign up at some of the top online sportsbooks today and take advantage of the best March Madness betting promos with the NCAA Tournament just a few days away. In total, there are $6,750 in sign-up bonuses up for grabs across all sports betting sites and DFS apps with one offer available to you at each. Bet on any NCAA basketball games using these offers now.
The best March Madness betting promos can be claimed at sites like bet365, BetMGM, Caesars Sportsbook, and Fanatics Sportsbook today. Additionally, even if online sports betting is not legal in your state yet, there are excellent alternative options like Underdog Fantasy available today.
Take a look at the chart below for information regarding the best March Madness betting promos to claim today:
| Best NCAAB Sportsbooks | Best March Madness Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $1,000 First Bet Safety Net or $150 Bet-and-Get | TOPACTION |
| BetMGM | $1,500 Deposit Match | TOPTAN1500 |
| Caesars Sportsbook | Bet $1, Get $150 in Bonus Bets If You Win | ACTION4BG1 |
| Fanatics Sportsbook | $1,000 in No Sweat Bets or $300 Bet-and-Get | Click Here |
Best March Madness Betting Promos Combine for $6,750 in Sign-Up Bonuses Today
Let's take a look at the best March Madness betting promos to claim at some of the top online sportsbooks in the U.S. today. Remember, you can only claim one offer as a new user at each sportsbook even if multiple promos are offered.
bet365
| bet365 Promo | States Available | bet365 Bonus Code |
|---|---|---|
| $1,000 First Bet Safety Net | AZ, CO, IA, IN, KY, LA, NC, NJ, OH, VA | TOPACTION |
| Bet $5, Get $150 in Bonus Bets | AZ, CO, IA, IN, KY, LA, NC, NJ, OH, VA | TOPACTION |
| $150 Bet & Get + 50 Casino Spins | PA | TOPACTION |
The bet365 bonus code TOPACTION yields a choice between two March Madness betting promos in most states: a $1,000 First Bet Safety Net and a $150 bet-and-get offer. The First Bet Safety Net provides up to $1,000 back in bonus bets if your initial wager results in a loss. The bet-and-get requires a $5+ initial wager in exchange for $150 in bonus bets win or lose. If you sign up for a new account with the bet365 bonus code TOPACTION in Pennsylvania, you get the bet-and-get bonus plus 50 spins at bet365 Casino.
BetMGM
| BetMGM Promo | States Available | BetMGM Bonus Code |
|---|---|---|
| Get a 20% First Deposit Match Up to $1,600 in Sports Bonus | AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, WY | TOPTAN1600 |
| Get Up to $1,500 Back in Bonus Bets if Your First Bet Doesn't Win | IL, IN, IA, LA, KS, KY, OH, TN, WY | TOPACTION |
BetMGM has a pair of March Madness betting promos available to new users today. When you register with the BetMGM bonus code TOPTAN1600, you get a 20% deposit match of up to $1,600 in sports bonus. In select states, you can opt to use the BetMGM bonus code TOPACTION instead to secure up to $1,500 in bonus bets if your first bet loses.
Caesars Sportsbook
| Caesars Sportsbook Sign-Up Bonus | States Available | Caesars Sportsbook Promo Code |
|---|---|---|
| Bet $1, Get $150 in Bonus Bets If You Win | AZ, CO, DC, IA, IL, KY, LA, MD, ME, NY, OH, TN, VA, WY | ACTION4BG1 |
| Bet $1+, Get 10 100% Profit Boost Tokens | AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, NC, NJ, NY, OH, ON, PA, TN, VA, WV, WY | ACTION4DYW |
Sign up for a new account with the Caesars Sportsbook promo code ACTION4BG1 for a $150 bet-and-get bonus. Simply place a $1+ initial wager and get $150 in bonus bets if your bet wins. New users in some states do not have this offer available and can instead use the Caesars Sportsbook promo code ACTION4DYW to secure 10 100% Profit Boost Tokens with a $1+ initial wager.
Fanatics Sportsbook
| Fanatics Sportsbook Promo | States Available | Sign-Up Link |
|---|---|---|
| Bet and Get up to $1,000 in No Sweat Bets | AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, WY | Click Here |
| Bet $30, Get $300 in Bonus Bets | AZ, MI, NJ, PA | Click Here |
| Sign Up and Get a 300% Profit Boost Token | NY | Click Here |
Fanatics Sportsbook offers three different March Madness betting promos across different states. In most states, new users can take advantage of the Fanatics Sportsbook promo and claim up to $1,000 in No Sweat Bet opportunities, which are distributed evenly over the first 10 days on the app. In AZ, MI, NJ, and PA, you instead receive a three-day bet-and-get offer: place a daily wager of $10 or more and get $100 in bonus bets back. Meanwhile, NY customers who sign up receive a 300% Profit Boost Token that can be applied to any betting market.
Alternative to Best NBA Betting Promos: Underdog Fantasy (DFS)
| Underdog Fantasy Sign-Up Bonus | States Available | Underdog Fantasy Promo Code |
|---|---|---|
| Get Up to $1,000 Bonus Cash When You Make Your First Deposit | AL, AK, AR, CA, DC, GA, IL, IN, KS, ME, MN, MS, NE, NM, NC, ND, NY, OK, OR, RI, SC, SD, TX, UT, VA, VT, WI, WY | TOPACTION |
An excellent alternative option to the best March Madness betting promos can be claimed at Underdog Fantasy, one of the top DFS apps. When you sign up with the Underdog Fantasy promo code TOPACTION, you receive a 50% deposit match of up to $1,000 in bonus cash. This offer has a 1x rollover requirement that you must meet within 14 days.