I ran this whole thing myself, so here's the short version. I signed up with the Kalshi referral code ACTION, traded $25 on a baseball market, and the trading credit landed in my account. Then I sent my invite link to a friend; he did the same $25, and we each picked up another $25.
The Kalshi refer-a-friend program allows up to 40 referrals at up to $25 apiece, capping at $1,000 in lifetime credit. Tuesday night gives you two nationally televised games to meet the requirement, with Rays vs. Yankees at 7:05 p.m. ET and Padres vs. Dodgers at 10:10 p.m. ET.
The order matters, though. You claim the $55 new user offer first, and only after you've transacted $25 yourself does your invite link actually pay. Nothing in the app warns you about that, which is exactly how I almost burned a referral.
How to Claim the $55 Kalshi Referral Code ACTION Offer
- Tap through and register using the Kalshi referral code ACTION
- Complete identity verification
- Deposit and trade $25 on any Predictions market, including tonight's MLB games
- Collect $55 in trading credit
Kalshi runs on prediction markets rather than traditional odds, so contracts trade in cents and settle at $1 or $0. If that mechanic is new to you, our Kalshi review and our how to bet on Kalshi walkthrough cover the basics in a few minutes.
The $1,000 Refer-a-Friend Math
Once your own $25 clears, your link goes live. Your friend has to be brand new, verify their identity, sign up through your specific link, and trade $25 within seven days of opening the account. Depositing alone does nothing, which accounts for most of the "where's my bonus" complaints I see.
Rewards run up to $25 per person and vary by account, with $15 as the realistic floor. Forty successful referrals get you to the $1,000 ceiling. Credits expire seven days after they hit, so use them.
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Rays vs. Yankees Prediction: Under 6.5 Runs
First pitch: 7:05 p.m. ET on TBS
Kalshi prices the Yankees at 54% to win, with the Rays at 46%. The run line suggests a tight game, with Rays +1.5 at 66% against Yankees -1.5 at 35%.
My read lands on the total. Under 6.5 sits at 51%, and I want it. This matchup features two of the best arms in the American League: Drew Rasmussen brings a 2.72 ERA and a sparkling 0.93 WHIP over 165.1 innings for Tampa Bay, while Max Fried counters with a 2.63 ERA and a 0.98 WHIP through 106 innings. Neither one hands out free baserunners, with Rasmussen at 29 walks and Fried at 31. Fried has surrendered just four home runs all season, which matters plenty in a ballpark built to inflate that number.
The doubleheader angle strengthens the case. This is the nightcap, so bench bats fill lineup spots, regulars from the opener sit or exit early, and the at-bats in innings six through nine come from guys who already logged nine innings of their own. Rasmussen and Fried both work efficiently enough to hand short leads to their bullpens, and a cool September night in the Bronx does the rest.
Rays vs. Yankees Pick: Under 6.5 Runs (51%)
Padres vs. Dodgers Prediction: Michael King Under 4.5 Hits Allowed
First pitch: 10:10 p.m. ET on TBS
The market pricing mirrors the early game, with the Dodgers at 54% and the Padres at 46%. The total sits at 8.5, roughly two runs higher than Rays vs. Yankees.
For the pick here, I'm deferring to Action Network MLB expert Doug Ziefel, who likes Michael King Under 4.5 hits allowed at 44%.
Ziefel's case rests on contact suppression. King carries a 3.45 ERA and a 1.20 WHIP, backed by strong percentile marks in average exit velocity allowed and hard-hit rate plus an above-average ground-ball rate. That profile caps hit totals regardless of opponent.
The head-to-head evidence stands out most. King handled this same Dodgers lineup earlier this year, throwing seven innings of four-hit ball with nine strikeouts in a 1-0 win over Yamamoto. His recent form matches that shape: five hits over seven against the Giants, four hits in six against Atlanta, and three hits across seven shutout innings versus Houston.
The Padres fight Los Angeles directly for playoff position in this final head-to-head series and hand King the series opener. That deployment tells you plenty.
Padres vs. Dodgers Pick: Michael King Under 4.5 Hits Allowed (44%)
Getting Started Tonight
If you like our content and picks, sign up with the Kalshi referral code ACTION and put the analysis to work on tonight's MLB slate. Both games clear the $25 requirement on their own.
A note from experience: trade markets you'd actually take a position in. Kalshi claws back bonuses on manufactured activity, and the $25 you put up is real money that can settle against you. Among the best prediction market apps, Kalshi's welcome offer ranks with the best prediction market promos out there, but no MLB betting promos are worth staking money you need.
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions. 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.
