Kalshi Billion Dollar Bracket: Win $1 Billion For A Perfect March Madness Bracket
Kalshi is offering $1 billion to anyone who can call all 63 games of the 2026 NCAA Tournament correctly, with NBA star Devin Booker endorsing the challenge and $1 million guaranteed to the top scoring bracket. Entry is completely free, spots are capped at 10 million, and brackets close March 19. Think you can win? Join Devin Booker on Kalshi and enter!
Jack Borovitz - March 16, 2026, 7:30 PM EDT
6 Minute ReadJoin Devin Booker On Kalshi For Your Chance at $1 Billion
Nobody has predicted a perfect March Madness bracket. Ever. Kalshi is putting $1 billion on the table for anyone who does, and the entry is completely free.
The Kalshi Billion Dollar Bracket challenge offers $1 billion to anyone who calls all 63 games of the 2026 NCAA Men's Basketball Tournament correctly. No purchase required, no deposit required. Sign up, verify your age, fill out your bracket, and see if you can trump 1 in 120 billion odds to become the first person ever to submit a verified perfect bracket.
Join Devin Booker on Kalshi Here
Why $1 Billion?
The math is the whole point. If every tournament game were a pure coin flip, the odds of a perfect bracket sit at 1 in 9.2 quintillion. That's 9,200,000,000,000,000,000 brackets. Even accounting for basketball knowledge and informed picks, with an average prediction accuracy of around 67%, the odds improve to roughly 1 in 120 billion. Still effectively impossible.
Kalshi put that number in perspective. One grain of rice in 80 semi-trucks worth of rice. One sheet of paper in a stack 27,000 Empire State Buildings tall. One pixel on a wall of 14,500 4K screens. If you filled out a bracket every second, you'd need 3,800 years to expect one perfect bracket. Like picking the right asteroid in the entire solar system.
That's exactly why the prize has to be a billion dollars. In 2014, Warren Buffett backed a nearly identical challenge through Quicken Loans. The best bracket that year didn't even survive the first round. Kalshi is reviving the format for 2026 with SIG Parametrics, LLC (a member of the Susquehanna International Group) financially backing the prize.
Kalshi knows the odds aren't in your favor. Even without a perfect bracket, the best bracket on the board walks away with $1 million guaranteed.
What's Actually Up For Grabs
Three prizes, three different ways to win something:
$1 Billion goes to anyone with a verified perfect bracket. All 63 games called correctly before the first tip-off. If more than one person hits perfect, the prize splits equally among them. Maximum entries accepted: 10 million, so the spots are finite.
$1 Million goes to the highest-scoring bracket if nobody goes perfect. Points are awarded per correct pick by round, and the top scorer takes home the consolation prize. Ties split equally.
$1 Million to Charity gets donated regardless of how the competition plays out. Kalshi is splitting it between iMentor, a nonprofit that supports first-generation students with financial literacy and career readiness, and Devin Booker's Starting Five foundation, which funds youth and family organizations across Arizona. Booker is officially partnered with Kalshi on the challenge, and his pitch is worth reading: his 2014 Kentucky squad went 31-0 in the regular season, everyone thought they'd finish perfect, and they didn't. "Perfection might be 1 in 9.2 quintillion," he wrote, "but it's always worth pursuing."
How To Enter
- Go to kalshi.com/billion-dollar-bracket
- Create a verified Kalshi account (age verification required, 18+)
- Use code “oddschecker”
- Build your bracket in the app or on the website, and submit it.
That's the whole process. One bracket per person. The deadline is before tip-off of the first tournament game on March 19, 2026, no later than 1:00 PM EDT. Once that first game starts, the window closes. Kalshi caps entries at 10 million total, so if the field fills before March 19, it's over early.
Join Devin Booker on Kalshi Here
Who Can Enter
U.S. residents 18 and older with a verified Kalshi account. New York and Florida residents are not eligible due to state regulations. Players, coaches, team staff, and officials in the 2026 NCAA Men's Basketball Tournament are also not eligible.
SIG Parametrics, LLC, a member of the Susquehanna International Group of Companies, is financially backing this promotion. Contest is not endorsed by or associated with the NCAA or Warren Buffett. Full terms and conditions apply at kalshi.com/billion-dollar-bracket.
The Bottom Line
Ten million entries, one perfect bracket prize, and zero cost to play. Warren Buffett tried this in 2014 and nobody came close. Twelve years of March Madness chaos later, Kalshi is putting $1 billion on the table and betting the tournament's unpredictability holds.
The only way to find out is to enter. Brackets close March 19, or when the 10 million entry cap fills, whichever comes first. Go to kalshi.com/billion-dollar-bracket and sign up before the tournament!
Join Devin Booker on Kalshi Here
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