Kalshi Promo Code BOOKIES Get $10 Bonus for March Madness Predictions Mar.18

By Adam Martin

Mar 18th, 2026 11:31 AM EDT

The Kalshi promo code BOOKIES gives new users a $10 bonus after completing $10 in trades. Tonight is one of the biggest multi-sport prediction market slates of 2026, the NCAA Tournament First Four tips off in Dayton with UMBC vs. Howard and Texas vs. NC State (9:10 p.m. ET, truTV), and the NBA features a double-header on NBC with Cleveland vs. Milwaukee and Philadelphia vs. Denver.

Kalshi is also offering a free Billion Dollar Bracket Contest, no deposit or trades required to enter. Submit your bracket before Thursday, March 19 at 12:15 p.m. ET for a shot at $1 billion for a perfect bracket, with $1 million guaranteed to the top-scoring entry.

Must be 18+. Trading involves risk. Bonus requires $10 in completed trades. Not available for sports markets in AZ, IL, MA, MD, MI, MT, NJ, OH.

How to Claim the Kalshi Promo Code Today

Setting up a Kalshi account takes under five minutes.

• Step 1: Download the Kalshi app (iOS or Android) or visit kalshi.com and tap "Sign Up."
• Step 2: Enter your email, name, and personal details. When prompted, type the promo code BOOKIES.
• Step 3: Complete identity verification (government-issued ID required, Kalshi is a CFTC-regulated exchange, not a sportsbook).
• Step 4: Deposit at least $1 using bank transfer, debit card, Venmo, PayPal, or crypto.
• Step 5: Make $10 in total trades across any markets. The trades can be spread across multiple events, you do not need to place a single $10 trade. Once the cumulative total reaches $10, the bonus is credited automatically.

Bonus entry: Head to the Billion Dollar Bracket section to submit your tournament bracket for free. No deposit or trades required. Entries are capped at 10 million and close March 19 at 12:15 p.m. ET.

Why Kalshi for March Madness

Kalshi operates as a CFTC-regulated prediction market exchange, not a sportsbook. This distinction matters for three reasons:

Legal in all 50 states. While sports-specific contracts are restricted in some states (AZ, IL, MA, MD, MI, MT, NJ, OH), the platform itself is accessible everywhere. Users in restricted sports states can still claim the promo code by trading non-sports markets (politics, economics, weather).

Probability-based pricing. Instead of traditional American odds, Kalshi displays contract prices in cents that directly reflect win probability. A contract priced at 55¢ means the market assigns a 55% chance of that outcome. No vig math required.

Live trading. Unlike sportsbooks where your bet is locked, Kalshi allows you to buy and sell contracts in real time as games unfold. If you buy UMBC at 55¢ and the Retrievers build a 10-point lead, the contract price rises, you can sell for profit before the game ends.

Billion Dollar Bracket. Free entry, $1 billion for perfection, $1 million guaranteed to the highest-scoring bracket. No deposit required, just a verified Kalshi account. Entries close Thursday, March 19 at 12:15 p.m. ET.

About the Author

Adam Martin

More About Adam

Adam Martin is a betting analyst and DFS betting expert for Bookies.com who has covered professional sports, with an emphasis on sports gambling, for more than a decade. He is an authority on UFC betting, while also covering the NBA, NFL, NHL, and MLB.