💰 Kalshi Billion Dollar Bracket: Win $1B for a Perfect College Tournament Bracket

Think you know ball? Put your skills (or hours upon hours of watching college basketball) to the test this March and April with the Kalshi Billion Dollar Bracket. Successfully predict the winner of every game from the first round through the championship game on Monday, April 6, and win $1 billion from Kalshi for your perfect bracket.

If there's no perfect bracket at the end of the college tournament, then the first-place prize of $1 million will go to the highest-scoring entry. Another $1 million will go to charity.

Create and verify your Kalshi account today and submit your picks before the first round begins on Thursday (12:15 p.m. ET). There's no need to deposit or trade. You just need to be of legal age (18+).

📝 Kalshi Billion Dollar Bracket details

Join the Billion Dollar Bracket contest by building and submitting a college tournament bracket via Kalshi’s platform before Thursday at 12:15 p.m. ET.

Users must create an account, verify their age (18+) and identity, and submit their bracket before the first game of the first round. Only one bracket entry is allowed per person.

A perfect bracket will make you eligible for the $1 billion grand prize. If there are no perfect brackets submitted, then the first-place prize for the highest score will be $1 million. Guaranteed.

👉 Must be of legal age (18+) and only one entry per user. Bracket contest not available to users in NY, Fla., or outside of the U.S. College basketball players, coaches, team staff, and officials in the 2026 Men's NCAA Tournament are also excluded.

The grand prize is insured by SIG Parametrics, which adds credibility to the promotion and ensures the billion-dollar payout would be covered if someone beats the astronomical odds.

🧮 What are the chances of a perfect college tournament bracket?

Completing a flawless NCAA Tournament bracket ranks among the most difficult feats in all of sports. When picks are made with knowledge of team quality and historical probabilities, the chances of a perfect bracket are commonly put at around 1 in 120 billion.

Go in blind and choose games at random? Those odds explode to somewhere in the neighborhood of 1 in 9.2 quintillion.

For most bracket contestants, the realistic target is the $1 million prize awarded to the highest-scoring entry. Of course, the tournament's legendary unpredictability - and the chaos that comes with it - is precisely what keeps bracket pools so compelling year after year.

🎟️ Claim your free Kalshi Billion Dollar Bracket entry today

There's no trading or real-money transactions required to sign up for the Kalshi Billion Dollar Bracket today. Follow these steps to participate:

1. Visit Kalshi and create a new account
2. Complete the identity verification process
3. Navigate to the Billion Dollar Bracket contest page
4. Fill out your college tournament bracket
5. Submit your March Matchups picks before the first tournament games begin on Thursday

No deposit is required to enter the bracket contest, but participants must have a verified account.