Both Kalshi and Polymarket US are CFTC-regulated U.S. event-contract platforms. Polymarket US currently advertises $25 / $25 promo credits after a $10 deposit via https://polymarket.us/join/drowsylynx5338. Kalshi's referral credit is offer-dependent after ID verification and a qualifying trade. Last verified Nov 6, 2026.
Side-by-side
| Kalshi | Polymarket US | |
|---|---|---|
| Regulation | CFTC-regulated exchange | CFTC DCM + DCO (fiat USD) |
| Our invite | kalshi.com/t/ekw1tark | polymarket.us/join/drowsylynx5338 |
| Code | Embedded in link | drowsylynx5338 (username) |
| Published friend/you bonus | Varies by live offer (trade ≥ $25 common) | $25 / $25 after ≥ $10 deposit (Campaign A) |
| Cap | See Kalshi FAQ / terms | Up to 50 referral bonuses |
| Age | 18+ (Kalshi rules) | 18+ and age of majority in your state |
Some links are referral links.
When to pick which?
- Polymarket US if you want the clear published $25 / $25 Refer-A-Friend after a $10 deposit and prefer the polymarket.us app/markets.
- Kalshi if you already follow Kalshi markets or the live Kalshi referral credit looks better for you—start at our Kalshi referral link.
- Also compare other regulated / prediction products we list: DraftKings Predictions, FanDuel Predicts, Novig, and Robinhood.
- California readers: see sports prediction apps in California for how event contracts differ from sportsbooks.
Frequently asked questions
Which is better: Kalshi or Polymarket US?
Both are CFTC-regulated U.S. event-contract platforms. Polymarket US currently publishes a clear $25/$25 Refer-A-Friend Campaign A after a $10 deposit. Kalshi referral dollar amounts vary by offer after ID + a qualifying trade. Pick based on the markets you want and the live offer in each app.
Is Polymarket US legal in California?
Polymarket US is built as a CFTC-regulated DCM/DCO for U.S. residents trading event contracts in USD. Individual traders must be at least 18 and the age of majority in their state (18 in California). Always complete KYC and follow market-specific restrictions.
Where are the invite links?
Kalshi: our kalshi.com/t/ekw1tark referral page. Polymarket US: https://polymarket.us/join/drowsylynx5338 (code drowsylynx5338).