Prediction market promo codes (September 2026)
Every current welcome offer, with the code and the terms in plain English. Checked and dated.
All offers checked 27 September 2026. Enter the code when you sign up; codes usually can't be added afterwards. Every offer has terms (minimum deposit or trade, age, state), summarised below. The platform's own terms always apply.
| Platform | Offer | Code | Terms page |
|---|---|---|---|
| Polymarket | Deposit $10, get a $50 trading bonus | WIN | Details |
| ProphetX | Trade $50, earn $75 | WINPREDICTS | Details |
| Kalshi | Trade $25, get $25 | WINPREDITCS | Details |
| OG | Trade $25, get $25 in rewards | WINPREDITCS | Details |
| Novig | Deposit $10, get $25 in trade credits | WINPREDICTS | Details |
| Rebet | 100% purchase match up to $100 | WINPREDITCS | Details |
Polymarket offer, checked 27 September 2026
Deposit $10, get a $50 trading bonus
Promo code: WIN
iPhone app only. 18+ only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization. Terms apply.
ProphetX offer, checked 27 September 2026
Trade $50, earn $75
Promo code: WINPREDICTS
New ProphetX traders, 21+. Deposit and trade $50 to unlock the $75 trading bonus. Eligibility and limits vary by state. Terms apply.
Kalshi offer, checked 27 September 2026
Trade $25, get $25
Promo code: WINPREDITCS
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. Terms apply.
How welcome offers work
Most prediction market offers say "trade $X, get $Y". You deposit, trade at least $X on any markets, and the platform adds $Y in bonus credit or rewards. Bonus credit usually has to be traded before you can withdraw what it earns.
Frequently asked questions
Can I use more than one promo code?
You can claim each platform's welcome offer once, so yes, one per platform.
Why didn't my promo code work?
Common reasons: it wasn't entered at sign-up, you already have an account, you're in an ineligible state, or you haven't met the minimum trade yet.
