The best March Madness betting promos grant more than $3,700 in sign-up bonuses for any college basketball games this week. You have access to various types of March Madness betting promos from top-tier sportsbooks like bet365, BetMGM, Caesars Sportsbook, and Fanatics Sportsbook. Your options include bet-and-get offers, first bet insurance promos, profit boost offers, and deposit matches.
The March Madness betting promos listed here are only available to new sign-ups at a given sportsbook. Bet on the two First Four NCAAB games tonight with your chosen sign-up bonus. The Mount St. Mary’s vs. American University game starts at 6:40 p.m. ET and Xavier vs. Texas commences at 9:10 p.m. ET.
Here are the best available March Madness betting promos. Register with one or more sportsbooks now to get a sign-up bonus for March Madness.
| College Basketball Sportsbooks | March Madness Betting Promos | Sign-Up Link |
| bet365 | Bet $5, Get $150 in Bonus Bets, Win or Lose OR $1,000 First Bet Safety Net | LABSNEWS |
| BetMGM | Up to $1,600 in Deposit Match Bonus OR $1,500 First Bet Offer OR Bet $10 Get $150 in Bonus Bets if You Win | LABSNEWS1600 LABSTOP FLNEWSGET |
| Caesars Sportsbook | Bet $1, Get $150 in Bonus Bets If You Win OR 10 100% Profit Boost Tokens | LABSNEWSBG1 LABSNEWSDYW |
| Fanatics Sportsbook | Bet $30, Get $300 in Bonus Bets OR $1,000 in No Sweat Bets | Click Here |
Activate the top March Madness betting promos today
Here’s a guide to the best March Madness betting promos available. It is possible to collect over $3,700 in bonuses if you make a new account with every sportsbook listed. Keep in mind, you can also use these bonuses to bet on games from the NBA or NHL today.
1. bet365 Sportsbook
- bet365 bonus code: LABSNEWS (for all offers)
- bet365 sign-up offer(s): Bet $5, Get $150 in Bonus Bets Win or Lose or $1,000 First Bet Safety Net
- States available: AZ, CO, IA, IN, KY, LA, NC, NJ, OH, VA
- bet365 PA bonus code: LABSNEWS
- bet365 sign-up offer: Bet $5, Get $150 in Bonus Bets Win or Lose + 50 Casino Spins
- bet365 IL bonus code: LABSNEWS
- bet365 sign-up offer: Bet $5 Get $150 in Bonus Bets + $50 More if 1+ Point is Scored on Thursday
- bet365 TN bonus code: LABSNEWS
- bet365 sign-up offer: Bet $5 Get $150 in Bonus Bets + $50 More if Tennessee Wins in Round 1
The bet365 bonus code LABSNEWS banks one of two March Madness betting promos in all states where the sportsbook is operational, except PA. Your choices are a $150 bet-and-get promo or a $1,000 First Bet Safety Net.
The bet-and-get offer is fairly straightforward. Bet $5 on any March Madness betting market with -500 odds or longer to get $150 in bonus bets, win or lose.
If you’re located in PA, IL, or TN, you get an extra perk on top of $150 in bonus bets via bet365 bonus code LABSNEWS.
Here is a breakdown of the additional bonus you receive in PA, IL, or TN. In PA, you receive 50 spins for bet365 Casino slots. New sign-ups in IL get a Super Boost, that lets you place a $50 bet on a minimum of one point to be scored in March Madness at +100 odds. The TN-specific Super Boost allows you to make a $50 bet on the Tennessee Volunteers to win their first-round matchup at +100 odds.
The $1,000 First Bet Safety Net from bet365 bonus code LABSNEWS nets a first bet insurance promo. Place your initial wager on any March Madness game, and if it loses, you get your stake reimbursed as bonus bets.
2. BetMGM Sportsbook
- BetMGM bonus code: LABSNEWS1600
- BetMGM sign-up offer: 20% First Deposit Match, Up to $1,600 in Sports Bonus
- States available: AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY.
- BetMGM bonus code: LABSTOP
- BetMGM sign-up offer: Get up to $1,500 Back in Bonus Bets if Your First Bet Doesn’t Win
- States available: AZ, DC, IA, IL, IN, LA, KS, KY, MA, MD, NC, OH, TN, VA, and WY
- BetMGM bonus code: FLNEWSGET
- BetMGM sign-up offer: Bet $10 Get $150 in Bonus Bets if You Win
- States available: CO, MI, NJ, PA, WV
The BetMGM bonus code unlocks one of three March Madness betting promos, depending on your state. Refer to the guide above to see which March Madness betting promos from BetMGM are available in your location.
Grab a $150 bet-and-get offer from the BetMGM bonus code FLNEWSGET for March Madness today. With this offer, you place a first bet of $10, and if it wins, you get $150 in bonus bets.
The highest value offer from BetMGM Sportsbooks comes through the BetMGM bonus code LABSNEWS1600. This is a 20% first deposit match offer worth up to $1,600 in sports bonus. Get $1,600 in sports bonus today with a first deposit of $8,000 or more. There is a 10x rollover restriction with this offer. That means you must bet 10x the amount you get in sports bonus before you can withdraw any cash.
The last option is the the BetMGM bonus code LABSTOP, which grants a $1,500 first bet offer. Make a bet on any of the First Four March Madness matchups today, and if it loses, you get up to $1,500 in bonus bets, equivalent to your stake.
3. Caesars Sportsbook
- Caesars Sportsbook promo code: LABSNEWSBG1
- Caesars Sportsbook offer: Bet $1, Get $150 in Bonus Bets If You Win
- Caesars Sportsbook states: AZ, CO, DC, IA, IL, KY, LA, MD, ME, NY, OH, TN, VA, WY
- Caesars Sportsbook promo code: LABSNEWSDYW
- Caesars Sportsbook offer: 10 100% Profit Boost Tokens
- Caesars Sportsbook states: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, NC, NJ, NY, OH, PA, TN, VA, WV, and WY.
Grab a $150 bet-and-get offer from the Caesars Sportsbook promo code LABSNEWSBG1. This is a conditional bet-and-get promo, which in this case means you have to win your $1 first bet on a March Madness matchup or any other event to get $150 in bonus bets. You don’t receive any bonus bets if your first bet loses.
Your other choice comes from the Caesars Sportsbook promo code LABSNEWSDYW. This offer grants 10 100% Profit Boost Tokens. Bet $1 on any available March Madness game today, including any First Four matchup to get your 100% Profit Boost Tokens. A 100% Profit Boost Tokens grants you double the profit on a given wager of your choice.
The most you can wager with Profit Boost Token active is $25. A boosted bet’s winnings are capped at $2,500.
4. Fanatics Sportsbook
- Fanatics Sportsbook promo: Click Here
- Fanatics Sportsbook offer: $1,000 in No Sweat Bets
- States available: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, WY
- Fanatics Sportsbook promo: Click Here
- Fanatics Sportsbook offer: Bet $30 Get $300 in Bonus Bets
- States available: AZ, MI, NJ, PA
- Fanatics Sportsbook promo: Click Here
- Fanatics Sportsbook offer: Get a 300% Profit Boost Token
- States available: NY
Sign up today with the Fanatics Sportsbook promo and access one of the available March Madness betting promos from the platform. You get to choose your own offer when you register with Fanatics Sportsbook. The $1,000 in No Sweat Bets promo is accessible to all new Fanatics Sportsbook sign-ups outside of NY. With this offer, you get a $100 No Sweat Bet on each of your first 10 days with the sportsbook. You must place your No Sweat Bet on odds of -500 or longer. When a No Sweat Bet loses, it returns up to $100 in bonus bets back, equal to your stake.
Refer to my guide to see which Fanatics Sportsbook promo choices are accessible in your state, then register and choose your own offer.
| Fanatics Sportsbook Promo | States Available |
| Up to $1,000 in No Sweat Bets (Click Here) | AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, WY |
| Bet $30, Get $300 in Bonus Bets (Click Here) | AZ, MI, NJ, PA |
| Get a 300$ Profit Boost Token (Click Here) | NY |
Alternatives to the best March Madness betting promos
Sleeper
- Sleeper promo code: LABSBONUS
- Sleeper offer: Play $5, Get $55 in Free Entries
- States Available: AK, AR, CA, CO, DC, FL, GA, KS, KY, MA, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VT, WI, and WY.
Claim $55 in free entries from the Sleeper promo code LABSBONUS and make picks from any available March Madness matchup now. To make an entry, you need two to eight picks. With every pick, you choose if the player gets “More” or “Less” than the provided number. Every pick following the second one improves the payout multiplier on your entry. Sleeper Fantasy is one of the top DFS sites right now. Those sites are fantastic alternatives to the best March Madness betting promos. Other DFS platforms include PrizePicks and Underdog Fantasy.
You receive your $55 in free entries as 11 $5 playthrough credits. Deposit $25 or more with your first transaction to qualify for your bonus funds.
Kalshi Sports Trading
- Kalshi promo code: LABS
- Kalshi offer: Place $100 in Trades, Get $10 Sign-Up Bonus
- States available: AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC
Use the Kalshi promo code LABS to get a $10 bonus with the sports trading platform. Kalshi lets you trade shares that represent an outcome for any given event. This lets you make predictions on events from sports, politics, and more. To get your $10 Kalshi sign-up bonus, spend $100 or more on any March Madness-related shares today.
