Enter Kalshi $1B Bracket Challenge: Free Conetest for March Madness 2026

• Kalshi is running a $1B Perfect Bracket Challenge for the 2026 NCAA Men’s Basketball Tournament
• The contest is free to enter, and there is no deposit requirement to sign up
• See all the details for the Kalshi $1 Billion Bracket Challenge ahead of Round 1 on Thursday

The madness of March is upon us, and the 2026 NCAA Men’s Basketball Tournament is within reach as college hoops fans throughout the nation have begun filling out brackets. Making this year’s tournament even more exciting, Kalshi is bringing back Warren Buffet’s 2014 bracket challenge with a $1 Billion dollar prize for a perfect bracket. The Kalshi $1B Bracket Challenge is free to enter, and it’s available for eligible users in over 40 states.

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New users can claim the Kalshi referral code to unlock a $10 sign up bonus.

Kalshi $1B Perfect Bracket Challenge for March Madness

At this point, filling out brackets for the NCAA Basketball Tournament is synonymous with March. Blue-bloods, Cinderella stories, and everything in between will be packed into several weeks of the most intense college basketball action this season, and Kalshi is giving users the opportunity to win a $1 Billion prize.

64 teams, 63 games, 9.2 quintillion possible outcomes, and a $1 Billion prize for a perfect bracket. If there are no perfect brackets, Kalshi will still crown a winner, and a $1 Million prize will be paid out to the top-scoring bracket. If there are no perfect brackets and several users tie for the highest score, the $1 Million will be split among the top scores. Additionally, $1 Million will be donated to charity as part of the Kalshi Perfect Bracket Challenge.

The contest is free to enter, and there is no deposit requirement on Kalshi to participate. Age verification is required (participants must be 18+), and there is a limit of one entry per person. Enter the challenge and create your bracket on the Kalshi app or website to take your shot at winning $1 Billion.

New users interested in creating an account on Kalshi and joining the Perfect Bracket Challenge can use the referral code DIME to score a $10 sign up bonus.

How to Enter Kalshi $1 Billion Perfect Bracket Challenge

Looking to join the fun and submit your bracket on Kalshi? Follow these steps to create an account, make your picks, and take your shot at winning $1 Billion (or a share of $1 Million) from the Kalshi Bracket Challenge for March Madness.

1. Use this link to download the Kalshi app using the referral code DIME from the Apple App Store or Google Play. (Referral code DIME will unlock $10 sign up bonus).
2. Register for an account by providing the required information (date of birth, address, photo ID, Social Security, email, phone number).
3. Navigate to the Billion Dollar Bracket Challenge contest in the Kalshi app or website.
4. Make your picks and fill out your full NCAA Tournament bracket.
5. Submit your bracket entry before the first tournament games tip off on 3/19 (Thursday).

Users are not required to make a deposit to enter the bracket contest.

It should be pointed out that this contest is not available outside the United States, and is not available in New York or Florida. Users must be at least 18 years old to enter, and entries are limited to one per user. Kalshi is accepting a total of 10 million entries. Once the bracket challenge contest pool is full, it will not accept any more entries. Secure your spot today by signing up on Kalshi and entering the $1B Perfect Bracket Challenge.