We have three games on tonight’s NBA playoff slate, tipping off with the Philadelphia 76ers vs. Boston Celtics at 7 p.m. ET on ESPN. Right now, new users can unlock a $10 bonus with the Kalshi promo code ACTION. Simply make $10 in trades on any market, and you get a $10 bonus, regardless of the outcome.
It’s an easy way to get started on one of the best prediction market apps. You can use your bonus across a wide range of events, including the NBA Playoffs, NHL Playoffs, and MLB games. Kalshi offers a deep menu of markets for Tuesday, April 28, giving you plenty of ways to get involved in tonight’s action with Kalshi prediction markets.
Kalshi Referral Code ACTION Overview on Tuesday, April 28
Take a look at the table below for key details on the Kalshi referral code ACTION. Once complete, you can start trading on markets like 76ers vs. Celtics or any matchup from the 2026 NBA Playoffs.
| Kalshi Referral Code | ACTION |
|---|---|
| Kalshi Sign-Up Bonus | Trade $10, Get $10 Bonus |
| Terms & Conditions | Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH. |
| Verified Date | Tuesday, April 28 |
As long as you meet the requirements of the Kalshi sign-up bonus, you can trade on any game tonight. Don't miss out on the 76ers vs. Celtics game at TD Garden in Boston, MA. You only need to make $10 in trades to access the $10 welcome bonus.
Kalshi is currently available in most U.S. states, giving you broad access to prediction markets nationwide. You can claim this offer and view markets in AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NJ, NY, NC, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, and DC.
How to Trade on 76ers vs. Celtics Using Kalshi Promo Code ACTION
The Celtics have largely controlled this first-round series against the 76ers, jumping out with a Game 1 blowout, dropping Game 2 when Philly’s guards got hot, then reasserting themselves with tighter execution in Game 3 before completely overwhelming the Sixers in a 128–96 Game 4 rout to take a 3–1 lead. Jayson Tatum and Boston’s depth, especially a huge bench performance in Game 4, have exposed Philly’s biggest issues: inconsistent shooting, poor rebounding, and lack of supporting production even with Joel Embiid back from injury.
Heading into Game 5 tonight in Boston, the Celtics are in full control and can close the series at home, while the Sixers essentially need a near-perfect, high-effort game, better shooting, rebounding, and a big Embiid/Maxey performance to avoid elimination and extend the series.
How to Sign Up With the Kalshi Promo Code ACTION
Getting set up and claiming your bonus for the 2026 NBA Playoffs is quick and straightforward. Just follow the steps below to activate your welcome offer ahead of the 76ers vs. Celtics matchup:
- Download the App: Install the Kalshi app on your mobile device to begin the registration process.
- Create Your Account: Sign up by entering your basic personal details and completing identity verification to confirm eligibility.
- Apply the Promo Code: Enter the Kalshi promo code ACTION during registration so your account is properly tied to the promotional offer.
- Fund Your Account: Make your first deposit of at least $1 to activate trading access.
- Start Trading: Place $10 worth of trades on your chosen prediction markets based on the odds or probabilities shown.
With the Kalshi referral code ACTION, you don't have to make one $10 trade to unlock the $10 bonus. You can make smaller trades on different markets from the 76ers vs. Celtics game. Tune into the action at 7 p.m. ET on ESPN.
Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.
