Updated March 20, 2026
Prediction markets are booming in 2026, and platforms are competing hard for new users. We’ve rounded up the best active promo codes and sign-up bonuses for March 2026 so you can start trading with extra cash in your account.
New users can enter the promo code MARCH26 when signing up on the Polymarket U.S. app to receive a $20 bonus. Download the app and enter the code during registration. Valid for the month of March 2026.
Download on the App Store →Use code STREET when signing up for Kalshi to get $10 in bonus funds to use on NCAA tournament prediction markets. Perfect for March Madness betting.
Visit Kalshi →DraftKings is offering new prediction market users a massive bonus — place your first $5 bet and receive $50 in bonus bets. No promo code needed, the offer is applied automatically at sign-up.
Visit DraftKings Predictions →Crypto.com's prediction market is running a deposit bonus for March 2026. Place a $10 bet on any prediction market and get a $50 deposit bonus credited to your account.
Visit Crypto.com →Promo codes and offers are subject to change. Always verify terms on the platform's website before depositing. MeanEdge is not affiliated with any prediction market platform. We may earn a commission from referral links.