If you've been curious about Kalshi's prediction markets, tonight's Game 5 elimination showdown between the Boston Celtics and Philadelphia 76ers at 7 p.m. ET on ESPN is one of the best entry points of the NBA Playoffs. The latest Kalshi referral code ACTION gets new users a $10 bonus after a cumulative $10 in trades. You only need a minimum deposit of just $1, so it's the lowest barrier to entry of any prediction market welcome offer available tonight. Boston leads the series 3-1 and carries an 82% probability to advance, but the Kalshi promo code ACTION works across tonight's game, any other NBA market, NHL Playoffs, or Kalshi's live politics contracts.
Claim your $10 bonus with Kalshi referral code ACTION here:
For full terms and conditions, visit our Kalshi referral code review page.
Kalshi Referral Code ACTION Offer Details
| Kalshi Referral Code | ACTION |
| Kalshi Promo Code | ACTION |
| Offer | Trade $10, Get a $10 Bonus |
| How It Unlocks | Cumulative $10 in trades — multiple trades count |
| Minimum Deposit | $1 |
| Bonus Expiry | 30 days — cannot be withdrawn |
| Availability | 18+ in most states except AZ, IL, MA, MD, MI, MT, NV, and OH |
| Regulated By | CFTC (Commodity Futures Trading Commission) |
| Date Verified | April 28, 2026 |
What is a Kalshi Referral Code?
It's worth noting there are two types of Kalshi referral codes, and they work differently.
This referral code, like ACTION, is entered during new user registration. It unlocks the welcome offer: trade $10 in event contracts, receive $10 in bonus credit. This is the offer on this page. It has a 30-day expiration on the bonus and a $1 minimum deposit.
The refer-a-friend code is separate. Once you've registered and completed at least $10 in trades, Kalshi generates a unique referral link for your account. When a friend signs up through your link and completes $25 in trades within 30 days, both you and your friend receive $25 in trading credit with up to $1,000 in total referral earnings. That program is found in the side menu of the app under "Invite Friends."
Tongiht, the Kalshi promo code ACTION is what gets you started. The refer-a-friend program is what keeps paying once you're in.
How to Use the Kalshi Referral Code ACTION
- Tap this Kalshi sign-up link to start registration in your state.
- Create your account and enter Kalshi referral code ACTION.
- Complete identity verification and log in.
- Fund your account with at least a $1 deposit.
- Make $10 in trades on event contracts.
- Get a $10 bonus to use on 76ers vs. Celtics and review how market contracts settle before it settles.
Celtics vs. 76ers Game 5 — Kalshi Market Analysis (7 p.m., ESPN)
Philadelphia's season is on the line tonight at TD Garden. The 76ers have won just once in this NBA Playoffs first round series, 111-97 Game 2 win in Boston, and have been outscored by 64 combined points in Games 1, 3, and 4. The series' defining moment came Sunday when Boston's bench alone outscored Philadelphia's entire roster 57-24, with Payton Pritchard dropping 32 points off the bench on 6-of-12 from three. Jayson Tatum posted 30 points and 11 assists. Joel Embiid had 26 but finished with a -25 plus/minus.
Kalshi win probability for Celtics vs. 76ers Game 5:
- Boston Celtics 82% — priced at 83¢ per share
- Philadelphia 76ers 18% — priced at 18¢ per share
Trading your $10 welcome bonus on Boston at 82% returns approximately $3 in profit for a total payout of $13. This is a conservative, high-probability position on the series favorite closing it out at home. Trading $10 on Philadelphia at 18% returns approximately $46 in profit if the 76ers extend the series which is the kind of longshot return that only prediction markets can offer on an elimination game of this magnitude.
Trade on tonight's elimination game with Kalshi referral code ACTION here: Claim $10 Bonus
Other Kalshi Markets for Tuesday — NBA, NHL, Politics
Beyond tonight's elimination game, the Kalshi promo code ACTION works across the platform's full market catalogue:
NBA Playoffs: Additional first-round games continue Tuesday. The Hawks-Knicks series is tied 2-2 and has become one of the more exciting series in the First Round.
NHL Stanley Cup Playoffs: First-round NHL series are running concurrently. Kalshi carries game-level and series-level contracts across the full NHL bracket, including the Ducks-Oilers elimination game at 10 p.m. ET on TNT.
Politics: Kalshi's 2026 primary markets are live, with state-level Senate and House race contracts actively trading. These are some of the highest-volume non-sports marekts on the platform and a unique entry point for users interested in prediction markets beyond pro basketball.
Your cumulative $10 trading requirement can be split across any combination of these categories — one NBA trade, one politics contract, one NHL game which all count toward unlocking your bonus.
Claim the Kalshi referral code ACTION here and get your $10 bonus:
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.
