Every verified prediction market promo code we currently track, all on one page. We re-test each code every Monday. If something stops working, it’s removed within 24 hours.
The top three right now
These are the codes with the best bonus-to-effort ratio for new users in May 2026.
Polymarket promo codes
Polymarket’s US version launched in late 2025 and is still in invite-only/waitlist mode for many users. A valid promo code does two things at once: it skips the waitlist, and it credits $20 to your account after KYC and your first qualifying trade.
| Code | Bonus | Status |
|---|---|---|
| BOOST20 | $20 + waitlist skip | ✓ Verified May 13 |
| SKENS | $20 + waitlist skip | ✓ Verified May 13 |
Either code gets you the same $20 bonus and skips the US waitlist. For step-by-step redemption instructions, see our Polymarket promo code page.
Kalshi promo codes
Kalshi is the CFTC-regulated prediction market available in all 50 US states. Multiple media partners run their own referral codes, all of which trigger the same $10 sign-up bonus. You’ll need to place $10 in trades to unlock the bonus.
| Code | Bonus | Source |
|---|---|---|
| GRINDERS | $10 after $10 in trades | RotoGrinders |
| COVERS | $10 after $10 in trades | Covers.com |
| GOAL | $10 after $10 in trades | Goal.com |
| CBSSPORTS | $10 after $10 in trades | CBS Sports |
| ACTION | $10 after $10 in trades | Action Network |
| LABS | $10 after $10 in trades | FantasyLabs |
| RATE | $10 after $10 in trades | DeFi Rate |
| INSIDER | $10 after $10 in trades | Vegas Insider |
All Kalshi codes pay the same $10 bonus. The differences are which media partner gets the referral credit. Any of them works — see our Kalshi promo code page for redemption details.
Manifold Markets sign-up bonus
Manifold is the play-money prediction market. There’s no promo code system, but you can stack two separate bonuses:
- M$1,000 starting balance automatically credited to all new accounts
- M$1,000 referral bonus when you sign up via someone’s referral link (both you and the referrer get M$1,000)
Mana is play money — it can’t be cashed out — but it’s useful for learning prediction markets without financial risk. See our Manifold guide.
Robinhood prediction markets
Robinhood doesn’t run a dedicated promo for prediction markets. New brokerage accounts receive a free stock reward (technically between $5 and $200, but 96% of users receive $5-$8). You can sell the stock and use the proceeds to trade event contracts.
Other platforms (no codes available)
The following platforms are worth knowing about but don’t currently run referral programs for new users:
- PredictIt: US academic prediction market, focused on politics. $850 position caps. No sign-up bonus.
- Interactive Brokers ForecastTrader: Brokerage-grade event contracts. Available in all 50 states. No prediction-markets-specific promo.
- DraftKings/FanDuel Predicts: Newer prediction market offerings from established sportsbooks. Promos rotate seasonally.
How to actually claim these bonuses
Each platform has a specific flow, but the universal rules are:
- Enter the code during signup, not after. The single most common mistake is creating an account first and trying to add the code later. It won’t work.
- Complete KYC where required. Polymarket US and Kalshi both require government ID verification before bonuses credit.
- Place a qualifying trade. Most bonuses (except Manifold’s free Mana) require you to make at least one trade before the bonus shows up.
- Don’t create duplicate accounts. Every platform detects duplicates via email, phone, IP, and ID. Trying to claim multiple bonuses from one person will result in account closure.