March Madness is here, and college basketball fans can compete for a life-changing payday with the Kalshi billion dollar bracket challenge. Fill out a perfect bracket, predict every game correctly, and you could win $1 billion. The top-scoring bracket also earns $1 million, and another $1 million goes to charity. You can even download a printable March Madness bracket to plan your picks.
New users can use the Kalshi promo code ACTION when signing up.
Kalshi, financially backed by SIG Parametrics, LLC, a member of the Susquehanna International Group of Companies, is free to enter for verified members 18 and older (excluding New York and Florida residents). Use Kalshi referral code ACTION to secure your bracket and start competing.
How to Compete in the Kalshi Billion Dollar Bracket
Each verified Kalshi account can submit one bracket before tip-off of the first tournament game on March 19, 2026, at 1 p.m. ET. Kalshi caps the entries at 10 million, so early submission matters. Sign up using Kalshi promo code ACTION or Kalshi referral code ACTION to secure your spot.
Brackets earn points per correct pick:
- Round of 64: 10 points
- Round of 32: 20 points
- Sweet 16: 40 points
- Elite 8: 80 points
- Final Four: 160 points
- Championship: 320 points
The highest-scoring bracket wins $1 million if no perfect bracket appears. Any ties split prizes evenly.
Why a Perfect Bracket Is Nearly Impossible
Millions of fans fill out March Madness brackets each year, but no one has ever submitted a verified perfect bracket. If every game were a 50/50 coin flip, your odds of perfection are 1 in 9.2 quintillion. Even using stats, logic, and basketball knowledge (around 67% average accuracy), the odds only improve to 1 in 120 billion.
Visualize it:
- One grain of rice in 80 truckloads represents a perfect bracket.
- A stack of paper with every possible bracket would reach 27,000 Empire State Buildings tall.
- Filling out one bracket per second would take 3,800 years to hit perfection.
Kalshi’s prediction markets make this even more exciting. Ranked among the best prediction market apps, Kalshi allows fans to combine data, strategy, and basketball instincts to compete for leaderboard points.
Charitable Giving
Kalshi donates $1 million to youth and education programs. Half goes to iMentor, supporting first-generation students. The other half supports Devin Booker’s Starting Five, which funds Arizona youth and family initiatives.
Use Kalshi Promo Code ACTION to Enter $1 Billion March Madness Bracket
March Madness is short, but the Kalshi billion dollar bracket is massive. Join one of the best prediction market apps for college basketball, submit your bracket, and use the Kalshi promo code ACTION. Every pick counts — your perfect bracket could make history.
Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NJ, and OH.
