Use our Kalshi promo code ACTION and unlock $25 in bonuses. This prediction market promo sets you up well ahead of the US Open first round, which gets underway on Sunday, August 30 at then tennis being played at Flushing Meadows.
The final Grand Slam of the year opens on a Sunday for the second straight season, with day sessions starting at 11 a.m. ET and the Arthur Ashe night session at 7 p.m. ET. Carlos Alcaraz returns from a long injury layoff as defending champion, Novak Djokovic chases a sixth title in New York, and a deep American contingent led by Coco Gauff, Ben Shelton, Taylor Fritz and Amanda Anisimova gets its home major underway.
Claiming the Kalshi promo code ACTION is easy. Just create the account, clear identity verification, deposit, and settle $25 in event contracts. Kalshi then drops $25 of trading credit into the balance, win or lose.
What does the Kalshi Promo Code ACTION include?
| TL;DR for Readers | |
|---|---|
| Kalshi Promo Code | ACTION |
| Kalshi Promo Offer | Trade $25, Get $25 in Bonuses |
| Trading requirement | $25 in settled event contracts |
| Rollover | 1x before withdrawal |
| Credit window | 7 days from the grant |
| Eligibility | New users only, 18+ |
| Excluded states | AZ, IL, MA, MD, MI, MT, NV, OH, WA |
| Oversight | CFTC-regulated exchange |
What do Kalshi's US Open prices say?
Prices with prediction market apps read as straight probabilities with prediction market apps like Kalshi. So a 25¢ contract implies a 25% chance and settles at $1 or $0.
| Market | Contract | Chance |
|---|---|---|
| US Open Men's Singles Winner | Carlos Alcaraz | 25% |
| US Open Men's Singles Winner | Alexander Zverev | 20% |
| US Open Women's Singles Winner | Aryna Sabalenka | 22% |
| US Open Women's Singles Winner | Coco Gauff | 16% |
Alcaraz sits top of the men's board at 25% and Zverev is right behind at 20%. That is an unusually flat market for a defending champion. Jannik Sinner's absence with a knee injury removed the man who reached each of the last two finals here.
Zverev is the top seed but not the favorite. Sinner's withdrawal hands Zverev the No. 1 seeding, yet the market still rates him a point behind Alcaraz. This marks a change for the majors at this point of the year, and Rolland Garros, clay, and Wimbledon, grass, have featured so far. We now turn to the U.S. Open, hardcourt, and the players will have to adjust.
Sabalenka leads an open women's tourney. The world No. 1 prices at 22%, with Gauff the next name on the board at 16%. Team USA’s hopes rest with here seemingly, but the first majors have been dominated by the Europeans, what can the Americans pull off on home soil.
Why does the New Kalshi Promo Code beat the old Randomized $500 Bonus?
Kalshi previously ran a lottery-style welcome deal, with bonuses up to $500 on offer. However, the chance of earning this was quite slim. Seven in ten qualifiers took home $15, 24% landed $35, 5% reached $75, 0.65% hit $100, and a mere 0.35% collected the headline $500..
| Feature | Kalshi (current) | Kalshi (old randomized) | Polymarket promo code |
| Headline | Trade $25, Get $25 in Bonuses | Trade $25, Get up to $500 | Deposit $10, Get $20 |
| What most traders collect | $25, every time | $15 for 7 in 10 qualifiers | $20 |
| Odds of the top figure | 100% | 1 in 285 get $500 | 100% |
| Payout structure | Flat and fixed | Randomized five-tier ladder | Flat and fixed |
| Requirement | $25 in settled trades | $25 in settled trades | $10 deposit plus a trade |
| Rollover | 1x | 1x | 1x |
| Credit window | 7 days | 7 days | 7 to 30 days |
The pool stays flat, the payouts even out. Both structures give out $2,500 per 100 traders. The old ladder funneled $500 of that toward a single lucky account and left the majority of people holding $15. The new one shares it all evenly.
- Traders finish ahead. Anyone who landed the $15 or $35 tier, which covers 94 of every 100 qualifiers, now collects $25 instead.
- Only the jackpot chasers lose out. Roughly six traders in 100 hit $75 or better under the old ladder. The other 94 traded and ended up ‘losing the lottery’
- Bankroll math. A guaranteed $25 against a $25 requirement makes the 1x rollover and the seven-day window simple to plan. Instead of spending $25, getting $15, and ending up in a deficit from the get-go.
No guesswork after qualifying. The old draw left traders refreshing the app to learn their tier. The current structure states the number up front.
How do you Claim your Kalshi Promo Code before Kickoff?
- Open the Kalshi app or site and start a new account, using our sign-up links
- EnterKalshi promo code ACTION in the promo field on the registration screen.
- Complete identity verification, which takes a couple of minutes.
- Deposit $25 or more through your preferred method of payment.
- Trade $25 across eligible tennis markets, in one order or several small ones.
- Collect the $25 credit from the onboarding checklist, then trade it inside seven days.
Kalshi Referral Code FAQs
What is the Kalshi promo code? The Kalshi promo code is ACTION. New traders type it into the promo field during registration to activate the Trade $25, Get $25 in Bonuses welcome offer, then complete $25 in settled trades to trigger the credit.
Does Kalshi still run the $500 bonus? No. Kalshi retired the randomized $15-to-$500 ladder in favor of a flat structure. Every qualifying trader now receives the same $25, which beats the $15 that roughly 70% of the old offer's participants collected.
Which states allow the offer? Kalshi operates in most U.S. states under CFTC oversight, though the promotion excludes AZ, IL, MA, MD, MI, MT, NV, OH, and WA. Confirm eligibility at kalshi.com/regulatory first, since state rules shift often.
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.
