Kalshi Promo Code BOOKIES: Get $10 Bonus for Tonight's March Madness First Four (March 18)

I've been trading on Kalshi for a while now, and if you haven't signed up yet, tonight's a great time to jump in. Use the Kalshi promo code BOOKIES when you register, trade $10 in contracts, and you'll get $10 in bonus cash. With two First Four games tipping off in Dayton tonight, there's plenty to trade on right away.
Here's How to Claim the Kalshi Promo Code BOOKIES
- Head to the Kalshi website or grab the app from the App Store or Google Play.
- Hit "Sign Up" and punch in the promo code BOOKIES when it asks.
- Verify your identity. They'll need a photo of your driver's license or passport, plus a selfie. Sounds annoying, but it went fast for me.
- Drop at least $1 into your account.
- Make $10 worth of trades on any event contracts.
That's it. Once you hit $10 in trades, the bonus lands in your account. Doesn't matter if your trades win or lose — you still get the $10.
What's on Kalshi Tonight?
You're catching this at the right moment. Tonight's the second night of the NCAA Tournament First Four in Dayton, and there are two games you can trade on:
- (16) Prairie View A&M vs. (16) Lehigh — 6:40 p.m. ET on truTV
- (11) Miami (Ohio) vs. (11) SMU — 9:15 p.m. ET on truTV
Whoever wins punches their ticket to Thursday's Round of 64. And Thursday is when things really open up — Duke's the No. 1 overall seed this year, with Arizona, Michigan, and Florida rounding out the top line.
On Kalshi, you're not betting in the traditional sense. You're buying "Yes" or "No" contracts on whether something will happen — like which team wins a game. Prices move based on what other traders think, kind of like a stock. I actually prefer this setup because you can sell your position before the game ends if the price moves in your favor.
Not Just March Madness
I spend most of my time in the sports markets, but Kalshi goes way beyond basketball. Here's what else you can trade on:
- NBA — Nightly game contracts plus season-long futures like MVP and championship picks.
- World Baseball Classic — The 2026 WBC final has been pulling in huge volume. People are paying attention.
- Politics and economics — Fed rate decisions, inflation numbers, election outcomes. These markets get wild.
- Pop culture — Award show winners, trending events. It's surprisingly fun
The Billion Dollar Bracket Is Free
This one caught my eye. Kalshi's running a Billion Dollar Bracket contest for March Madness — you pick every game in the tournament, and if you nail them all, you're looking at a massive payout. It's free to enter, so there's no reason not to throw your picks in even if you're just signing up for the $10 bonus.
Quick Look: Kalshi Promo Code BOOKIES Details
| Detail | Info |
|---|---|
| Promo Code | BOOKIES |
| Bonus | $10 |
| Minimum Deposit | $1 |
| What You Need to Do | Trade $10, Get $10 in Credit |
| Who's Eligible | New users, 18+, U.S. residents |
| Regulated By | CFTC (federal) |
First Four Tips Off Tonight
Look, the $10 bonus isn't life-changing money. But it's free, it takes three minutes to set up, and there are live games to trade on tonight. The Round of 64 starts Thursday, so if you sign up now, you'll be ready when the real madness kicks in.
Use the Kalshi promo code BOOKIES when you register. That's all it takes.
About the Author

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.
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