Kalshi Referral Code ACTION: Unlock Up to $500 on Best MLB Prediction Market App

Kalshi Referral Code ACTION: Unlock Up to $500 on Best MLB Prediction Market App article feature image
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Action Network. Kalshi referral code ACTION offer for Phillies vs. Cardinals on Monday, August 10.

The Kalshi referral code is ACTION. New users who enter ACTION at signup, deposit at least $10, and trade $25 in event contracts receive a randomized bonus worth between $15 and $500 in trading credits. The code applies to every market on the exchange, whether that be Phillies vs. Cardinals in MLB tonight, NFL, college football, and more.

Kalshi is a prediction market, not a sportsbook. Contracts are priced in cents and pay out $1 when they settle in your favor, so a contract trading at 40¢ implies a 40% probability and returns 60¢ of profit. Because Kalshi is regulated federally by the Commodity Futures Trading Commission rather than licensed state by state, the exchange operates in 41 states plus Washington, D.C.

I signed up with ACTION to confirm the flow. The referral code field is easy to miss, as it sits on the date-of-birth screen during registration, not on a separate promo page. After your first deposit lands, the code cannot be applied retroactively, and you miss out on one of the best prediction market promos.

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How to Claim the Kalshi Referral Code ACTION Offer

  1. Tap any Kalshi link on this page to open the app or the desktop exchange.
  2. Enter code ACTION during signup.
  3. Verify your identity and confirm you live in an eligible state.
  4. Fund the account with a debit card, bank transfer, or wire.
  5. Place at least $25 in trades to trigger up to $500 in bonuses.

The whole process takes a few minutes on a phone. Finish it before first pitch and you trade Monday's markets the same night.

What the Kalshi Promo Code ACTION Delivers

The Kalshi promo code ACTION pays out a randomized reward once you place your first $25 trade, and the odds are heavily weighted toward the low end. Roughly 70% of users land $15, about 24% get $35, and around 5% see $75. The headline $100 and $500 tiers exist, but combined they hit less than 1% of the time. Treat $15 as the realistic expectation and anything above it as a bonus.

New traders point the Kalshi promo code ACTION at team markets, series markets, and season-long questions such as MLB MVP. Kalshi predictions stretch well past one night, which keeps the account useful long after the bonus lands.

Kalshi charges a small per-contract fee and pays out at $1 per winning contract, so the math stays readable on a small screen. You see the price, you see the payout, you decide.

Phillies vs. Cardinals: Monday Night in St. Louis

Philadelphia and St. Louis meet at 7:45 p.m. ET on FS1, and the market reprices quickly once MLB lineups drop. Scan the MLB weather report for St. Louis in August too, because humidity and wind direction push run totals more than casual traders expect.

Take a position on Phillies vs. Cardinals early, then adjust as bullpen and rotation news arrives. Prediction markets move in real time, so anyone reacting to a late scratch holds a genuine edge over a trader locked into a stale pregame number.

Monday's full MLB slate offers plenty of alternatives if this matchup prices too tightly for your taste. Splitting that first $25 across three or four games teaches you how contracts settle without much risk.

Kalshi Referral Code ACTION: Eligible States

Kalshi operates as a federally regulated exchange, so coverage reaches further than most sports products manage. Traders in these states claim the offer:

AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY

Kalshi Referral Code ACTION FAQs

What is the Kalshi referral code? Enter ACTION at signup. The Kalshi referral code ACTION returns up to $500 in bonuses after you trade $25.

Do I need to deposit $500 to earn the full bonus? No, and it's worth being clear that the $500 isn't something you can earn your way to. A $25 first trade activates the offer, and the reward amount is drawn from a fixed set of tiers. The top prizes of $100 and $500 are awarded to under 1% of users combined, so most people should expect $15.

Does the code apply to MLB markets? Yes. Monday's full slate, single-game markets, and futures such as MLB MVP all qualify.

How quickly does Kalshi pay? Contracts settle as soon as the market resolves, and the balance updates shortly after.

Is Kalshi legal in my state? Check the list above. The CFTC regulates the exchange, which explains the wide footprint.

Can I trade on mobile? Yes. The iOS and Android apps handle deposits, trades, and withdrawals in a few taps.

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, OH, and WA.

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About the Author

Nick Sterling is the Manager of Commercial News at the Action Network, where he writes and manages Top Stories commercial content focused on sportsbook promotions and major sporting events. His work centers on helping readers find the best betting offers and understand key opportunities across the sports calendar. A graduate of Towson University (Class of 2020), Nick is especially passionate about NASCAR and the NFL. Outside of work, he enjoys running, watching and betting on sports, and spending time with friends and family.

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