New users who sign up with Kalshi promo code ACTION can trade $25 and get up to $500 — the largest welcome ceiling on any regulated event-contract market. It's live for Phillies vs. Cardinals to open the week, first pitch 7:45 p.m. ET on FS1 from Busch Stadium in St. Louis.
Kalshi is a federally regulated exchange where you trade contracts on real-world outcomes, MLB games included, priced from $0.01 to $0.99. Enter the Kalshi promo code ACTION at sign-up, put $25 into your first trades, and the bonus scales toward the $500 ceiling as you go. The "Kalshi referral code" and "Kalshi promo code" provide the same offer. Type in ACTION, and either way, you collect your bonus from a top-tier option among prediction market apps.
Click the module below to register with the Kalshi referral code ACTION today ahead of Phillies vs. Cardinals:
What the Kalshi Promo Code ACTION Gets You
Once you trade $25, you get a bonus worth up to $500. Here are all the bonus details for this Kalshi promo code ACTION offer, which is one of the best prediction market promos available to new users for MLB trades today.
| Detail | Terms |
|---|---|
| Promo code | ACTION |
| Offer | Trade $25, Get up to $500 |
| Operator | Kalshi (regulated event-contract exchange) |
| Eligibility | New users, 18+ |
| Excluded states | AZ, IL, MA, MD, MI, MT, NV, OH, WA |
How to Claim the Kalshi Promo Code ACTION
- Head to the sign-up page via this Kalshi promo code ACTION link.
- Create your account and enter ACTION in the promo/referral field.
- Confirm you're 18+ and outside the excluded states.
- Fund your account and place your first $25 in trades on prediction markets to unlock the bonus from the Kalshi referral code ACTION.
Phillies vs. Cardinals Prediction
Here's the MLB contract I'd put the Kalshi promo code ACTION bonus behind. Philadelphia is the road favorite in a tightly priced game, so my lean is Cardinals to win at $0.48, with an implied probability of 48% on Kalshi's game market.
| Kalshi Market | Contract | Approx. Price | Implied Odds |
|---|---|---|---|
| Moneyline | Phillies to win | ~$0.54 | −115 |
| Moneyline | Cardinals to win | ~$0.48 | +105 |
| Total | Under 8.5 runs | ~$0.52 | — |
The market has Philadelphia as a slim road favorite, but the situational read points the other way, and my lean is the Cardinals to win, priced around $0.48 on Kalshi's game market. St. Louis sends out Hunter Dobbins and his steady 3.60 ERA, while Philadelphia counters with rookie Andrew Painter, whose velocity is back up to 97–99 mph but whose results have been shaky in his return, with a 6.48 ERA across 14 starts. Check the live Kalshi MLB odds for the latest odds before you make any trades.
Kalshi Promo Code ACTION FAQ
What is the Kalshi promo code ACTION offer?
Trade $25, get up to $500. Enter the Kalshi promo code ACTION at sign-up, fund your account, and place your first trades. The bonus scales toward a $500 ceiling, the largest welcome offer on any regulated event-contract market.
What's the best Kalshi trade for Phillies vs. Cardinals?
The Cardinals moneyline is the value. St. Louis sits as a home underdog around $0.48 despite a clear rest edge. Philadelphia taxed its bullpen over the weekend while the Cardinals stayed fresh at pitcher-friendly Busch Stadium. Confirm the live price before you trade.
Is the Kalshi referral code the same as the Kalshi promo code?
Yes, they're interchangeable. ACTION works to claim the $500 bonus offer regardless.
Can I trade Phillies vs. Cardinals on Kalshi?
Yes, you can make trades on any available prediction market. Once your account is funded, trade the moneyline, run line, or game total for Monday's 7:45 p.m. ET matchup on FS1 from Busch Stadium.
What states is Kalshi available in?
Most states, including Missouri. Kalshi is live everywhere except AZ, IL, MA, MD, MI, MT, NV, OH, and WA, so tonight's St. Louis crowd is covered. You must be 18 or older to trade.
Is Kalshi legit?
Yes, it's federally regulated. Kalshi is a CFTC-regulated exchange, so you're trading event contracts under federal oversight rather than placing sportsbook bets.
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.
