The 2026 MLB trade deadline hits at 6 p.m. ET on Monday, Aug. 3, and Kalshi turns every rumor into a market you can actually trade. Enter the Kalshi referral code ACTION when you sign up, and you unlock up to $500 in bonus trading credits after you trade at least $25. Act early, because you need to create your account, verify your identity, and deposit before the deadline clock hits zero.
This guide walks you through how the Kalshi referral code ACTION works, how the welcome bonus pays out, and what you can trade on deadline day and beyond.
How to Claim the Kalshi Referral Code ACTION
Follow these steps and you hold tradeable credits within minutes:
- Tap the CLAIM BONUS button above to open Kalshi's sign-up page or download the app.
- Create your account with your email and basic details.
- Enter the Kalshi referral code ACTION in the referral or promo code field during registration.
- Verify your identity. Upload a government ID and a selfie so Kalshi can confirm you meet the eligibility rules.
- Deposit at least $25 and place your first trades to unlock the bonus.
Once you trade $25 or more in event contracts, Kalshi credits your bonus. You then spend those credits across any market on the platform.
What the Welcome Bonus Actually Pays
The headline reads "up to $500," and that phrasing matters. Kalshi awards the bonus on a tiered scale, so most new traders land at the lower end and a small share hit the maximum. Treat $500 as the ceiling, not the guarantee. Either way, you turn a $25 trade into extra trading firepower, and you keep any profit you generate from those credits.
New customers only. You claim this offer once per account, and the credit expires 30 days after Kalshi issues it.
Kalshi Promo Code vs. Referral Program
Search the term "Kalshi promo code" and you land on this same welcome offer — Kalshi uses the promo code and referral code labels interchangeably for the sign-up bonus. The friend-referral program, though, works differently, so keep the two straight.
You enter the Kalshi promo code ACTION once, at sign-up, to claim your welcome bonus. Kalshi's separate friend-referral program kicks in later: after you meet a trading requirement, you find your unique referral link inside the app and share it. When a friend signs up through your link, verifies, and hits their own trading target, you both earn a referral credit. Remember that a new user enters either a promo code or a friend's referral link at registration — never both.
Why the MLB Trade Deadline Makes Deadline Day a Smart Time to Sign Up
Deadline day gives you a packed slate of yes-or-no questions to trade. The Dodgers already pulled off the weekend's blockbuster, landing two-time Cy Young winner Tarik Skubal from the Tigers, while the Rays grabbed Freddy Peralta from the Mets, the Cubs added Kevin Gausman from Toronto, and the White Sox picked up Luis Castillo, but plenty of dominoes still hang in the balance. Do the Red Sox buy or sell? How far do the Mets tear it down? Which contender makes the next splash before 6 p.m.? Kalshi prices every one of those outcomes, and the numbers swing fast as insiders break news through the afternoon.
The 6 p.m. ET cutoff creates the urgency — after it passes, teams can't trade 40-man roster players for the rest of the season — but your trading value doesn't vanish at 6:01. That same evening, Kalshi runs markets on the night's MLB games, on which front office "won" the deadline, and on the playoff odds that reprice the moment a contender lands an ace. So sign up before the deadline for the sharpest action, then keep putting your bonus credits to work all week.
Where Kalshi Ranks Among the Best Prediction Market Promos
Prediction markets have gone mainstream, and traders now compare welcome offers the same way sports bettors compare sportsbook bonuses. When you stack Kalshi's up-to-$500 credit against the field of best prediction market promos, the low $25 trigger and the sheer breadth of markets push it toward the front.
Kalshi covers far more than baseball. You trade contracts on politics, economics, weather, entertainment, and crypto, with every contract settling at either $1 or $0 based on the real-world result. If you shop MLB prediction market apps specifically, Kalshi stands out because it pairs deep sports coverage with federal regulation — a combination most rivals can't match.
Is Kalshi Legit?
Yes. The CFTC, the same federal agency that oversees U.S. futures markets, regulates Kalshi, which operates across the U.S. as a legal, federally regulated prediction market. You trade against other users on an open marketplace rather than against a house, and prices move as fresh information hits. Certain sports markets carry state-by-state restrictions, so confirm availability in your location before you deposit.
Frequently Asked Questions
What is the Kalshi referral code for August 2026? Enter the Kalshi referral code ACTION when you sign up. You add it in the referral or promo code field during registration to claim up to $500 in bonus trading credits.
How much does the Kalshi welcome bonus pay? You unlock up to $500 in bonus credits after you trade at least $25. Kalshi awards the amount on a tiered scale, so most new traders land toward the lower end and a small share hit the full $500.
Does the Kalshi promo code differ from the referral program? Yes. You enter the Kalshi promo code ACTION once at sign-up for your welcome bonus. Kalshi's friend-referral program comes later — you share your own link after you meet a trading requirement, and both you and your friend earn credit.
Can I still trade after the 6 p.m. ET deadline? Absolutely. The trade deadline drives the urgency, but Kalshi runs markets on that night's MLB games and dozens of other events long after the deadline passes, so your bonus credits keep working all week.
Is Kalshi legal and safe to use? Yes. The CFTC regulates Kalshi as a legal, federally regulated prediction market, and you trade against other users rather than a house. Some sports markets carry state restrictions, so check availability where you live.
Claim the Kalshi Referral Code ACTION Before First Pitch
The deadline won't wait, and neither should you. Enter the Kalshi referral code ACTION, verify your account, and deposit before 6 p.m. ET on Monday, Aug. 3, so you can trade the biggest day on the MLB calendar with up to $500 in bonus credits behind you.
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.
