NBA Finals Betting Promos: Grab $5.8K+ Bonuses for Mavericks-Celtics from DraftKings, Fanatics, ESPN BET, More

We have gathered all of the best NBA Finals betting promos for new customers. Sign up on these sportsbook apps and start with over $5,800 in bonuses for the Mavericks vs. Celtics series.

There are seven NBA Finals betting promos available on this page. Use our links and promo codes to secure each welcome offer from DraftKings, FanDuel, BetMGM, Bet365, Caesars, Fanatics, and ESPN BET. Then, you’ll have access to other odds boosts throughout the series.

Use all of these sportsbook apps during the NBA Finals to take advantage of the most betting bonuses. This will also give you the chance to search for the best odds. The action begins on Thursday night in Boston.

NBA Finals Betting Promos for Game 1 on Thursday

The Celtics are 6.5-point favorites in Game 1. They also have the best odds to win the title. Sign up on the following sportsbook apps in time for the opening game to use the most NBA Finals Betting promos.

To sign up, you will be asked to provide basic information to confirm your identity and age. Fund your account by making a deposit with any accepted banking method and make your first wager on the Mavericks vs. Celtics.

DraftKings Sportsbook: Bet $5 on NBA, Get $150 Bonus

DRAFTKINGS
SPORTSBOOK

Offer

T&Cs

Bet $5 & Get $300 in Bonus Bets if Your Bet Wins!

GAMBLING PROBLEM? CALL 1-800-GAMBLER or 1-800-MY-RESET, (800) 327-5050 or visit gamblinghelplinema.org (MA). Call 877-8-HOPENY/text HOPENY (467369) (NY). Please Gamble Responsibly. 888-789-7777/visit ccpg.org (CT), or visit 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 DraftKings Sportsbook customer. Must register new account to receive reward Token. Must select Token BEFORE placing min. $5 bet to receive $300 in Bonus Bets if your bet wins. Min. -500 odds req. Token and Bonus Bets are single-use and non-withdrawable. Bet must settle by and Token expires 5/3/26 at 11:59 PM ET. Bonus Bets expire in 7 days (168 hours). Stake removed from payout. Terms: sportsbook.draftkings.com/promos. Ends 4/26/26 at 11:59 PM ET.

CLAIM OFFER

SIGNUP OFFER

BET $5
GET $300

BET NOW

Register here and make your first $5 bet on the Celtics vs. Mavericks. No matter the outcome, you’ll receive $150 in bonus bets to use throughout the weekend. Customers have access to a no-sweat SGP for every game in the NBA Finals.

ESPN BET: First-Bet Reset Up to $1,000

THESCORE BET
SPORTSBOOK

Offer

T&Cs

Get a 100% Bet Reset Up To $1,000 if Your First Bet Loses
Must manually enter promo code SOUTH to claim offer.

Must be 21+, offer available in AZ, CO, IA, IL, IN, KS, KY, LA, MA, MD, NC, NY, OH, TN, VA. Gambling problem? Call 1-800-GAMBLER.

GET BONUS

CODE: SOUTH

CODE: SOUTH

SIGNUP OFFER

USE PROMO CODE
SOUTH

$1,000 BET RESET

GET OFFER NOW

Sign up here with our ESPN BET promo code SOUTH to start with a $1K first-bet reset. A losing wager will trigger five bonus bets that can be used over the weekend.

There are daily odds boosts available on the app. On Thursday, the odds for Luka Doncic to score 30+ points, Irving to score 20+ points, Tatum to record 10+ rebounds, and Jaylen Brown to make 2+ three-pointers are boosted to +650.

Fanatics Sportsbook: Up to $1K in Bonus Matches for NBA Finals

FANATICS SPORTSBOOK

Offer

T&Cs

Get a 100% Bet Match Up To $100 in FanCash for 10 Days
Must be 21+. GAMBLING PROBLEM? Call 1-800-GAMBLER (AZ, CO, KY, MD, OH, MI, TN, VA, WV); 1-800-BETS-OFF (IA); 1-800-9-WITH-IT (IN); (800) 327-5050 or mdgamblinghelp.org (MD); 1800gambler.net (WV)

One (1) sign up offer per user. Must place initial wager within 5 days of account opening. Terms apply.

CLAIM OFFER

SIGNUP OFFER

100% BET
MATCH

BET NOW

Click here to activate 10 bonus bet matches on Fanatics. Each one is up to $100, so you can earn as much as $1,000 in bonuses. This is one of the few NBA Finals betting promos that will last for every game in the series.

BetMGM: First Bet Up to $1,500

BETMGM SPORTSBOOK

Offer

T&Cs

Get Up To $1,500 Paid Back in Bonus Bets!

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 MS, NY, NV, ON, or PR.

GET THE APP

CODE: SDS1500

CODE: SDS1500

SIGNUP BONUS

GET UP TO
$1,500 BACK

BET NOW

Click here to claim a first-bet offer on BetMGM. New customers can make a wager up to $1,500 on the NBA Finals and get a bonus refund following a loss. Browse through all of the different markets to find your favorite option for a larger bet than usual.

Bet365: $150 Bonus or $1K Safety Net

BET365 SPORTSBOOK

Offer

T&Cs

Bet $10 & Get $200 in Bonus Bets Win or Lose!

Deposit required. Paid in Bonus Bets. Bonus Bets wager excluded from returns.  New Customers only. T&Cs, time limits and exclusions apply. States: NJ, PA, AZ, CO, IA, IL, IN, KY, NJ, LA, MO, MD, OH, TN, VA. GAMBLING PROBLEM? CALL 1-800-GAMBLER (CO/KY/LA/NJ/OH/VA) and 1-800-BETS-OFF (IA) 21+ (CO/IA/NJ/OH/VA) and 18+ (KY)

GET THE APP

CODE: SDS365

CODE: SDS365

SIGNUP BONUS

BET $10
GET $200

WIN OR LOSE!

BET NOW

Sign up here with our bet365 bonus code SDSXLM. You have the option between a $150 bonus and $1K safety net. Then, check out some of the SGP boosts for the game. The odds for the Celtics to win, Jayson Tatum to score 30+ points and Derrick White to record 5+ assists have been boosted to +450.

Caesars Sportsbook: Bet $1,000 on Mavs-Celtics

CAESARS SPORTSBOOK

Bet $1 & Double Your Winnings on Your Next 10 Wagers!

GET THE APP

CODE: SDSDYW

CODE: SDSDYW

SIGNUP BONUS

DOUBLE YOUR
WINNINGS

ON YOUR NEXT 10 WAGERS!

BET NOW

Register here to use our code SDS1000 to place a bet up to $1,000 on Caesars Sportsbook. If your opening wager loses, you’ll get a bonus refund. New odds boosts will be released for every game. The odds for Kyrie Irving to score over 19.5 points and record over 5.5 assists are now at +300.

FanDuel Sportsbook: Win $200 Bonus

Sign up here to activate the best promo on FanDuel Sportsbook. Win your first $5 bet to claim $200 in bonus bets. This wager can be on any market, such as Jayson Tatum to score 25+ points. Click here to win $300 in bonus bets in OH and here in MA.

America’s most popular sportsbook app has many other NBA Finals betting promos. Find a no-sweat same-game parlay and 30% profit boost for Game 1.

Alex Payton

Resident of Kentucky, Alex is a graduate from the University of Louisville and avid Cardinals fan. He also follows the New York Yankees, Indianapolis Colts, and has multiple years of experience in the online gambling industry.