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Kalshi Promo Code SIBONUS: Earn up to $500 Bonus for MLB & WNBA Games

Jeff Watters|
Claim the Kalshi promo code SIBONUS for up to $500 trading bonus on MLB and WNBA markets this Tuesday, August 11.
Claim the Kalshi promo code SIBONUS for up to $500 trading bonus on MLB and WNBA markets this Tuesday, August 11. | Sports Illustrated

Kalshi promo code SIBONUS unlocks up to $500 trading bonus for new users on Tuesday, August 11. This welcome offer lets you trade on the full MLB slate and the Liberty-Fever WNBA matchup without needing a code to get started, though SIBONUS is required to claim the bonus. Check out other prediction market promos available today.

How the Kalshi Promo Code Works for Tuesday's MLB and WNBA Action

The Kalshi promo code SIBONUS delivers a welcome bonus when you meet specific trading requirements. You'll need to deposit at least $25 and complete $25 in settled trades within seven days of registration to unlock your bonus. The bonus amount varies, with most users receiving smaller amounts, though some qualify for the full $500.

Tuesday's slate gives you plenty of trading opportunities to clear the bonus requirement. With Mariners-Yankees, Red Sox-Blue Jays, Mets-Braves, and Phillies-Cardinals in the early window, plus Brewers-Padres and Royals-Dodgers later in the evening, you can spread your $25 in trades across multiple games. If you trade $25 on the Yankees to beat Seattle and that outcome hits, your bonus gets credited regardless of your trade result.

Here are the key terms to understand before claiming your bonus:

  • You must be 18 years or older and new to Kalshi to qualify
  • Enter promo code SIBONUS during registration
  • Complete identity verification with a government-issued ID
  • Deposit at least $25 and settle $25 in trades within seven days
  • Bonus funds must be used within seven days of being credited
  • Bonus amounts are random and awarded at Kalshi's discretion
  • Your bonus is awarded regardless of whether your trades win or lose

The Liberty-Fever game on Tuesday night offers a clean trading angle if you want to use part of your $25 requirement there. New York visiting Indiana creates a star-driven matchup that could move quickly, letting you settle trades faster and unlock your bonus sooner.

Claiming Your Kalshi Promo Code SIBONUS for Tuesday's Games

Getting started with your welcome bonus takes just a few minutes. Follow these steps to sign up, fund your account, and start trading on Tuesday's MLB and WNBA action:

  1. Create your Kalshi account: Visit the Kalshi sign-up page and enter the promo code SIBONUS during registration. You'll provide your email, phone number, Social Security Number, and residential address.
  2. Complete identity verification: Kalshi requires KYC verification before trading. Submit a photo of your government-issued ID and confirm your personal details. This process typically takes just a few minutes.
  3. Deposit funds: Add at least $25 to your account using a supported payment method like debit card or PayPal. Make sure you deposit enough to complete your $25 in trades comfortably.
  4. Place your first trades: Head to Tuesday's markets and start trading. You can split your $25 across multiple games like Yankees-Mariners or the Liberty-Fever matchup, or place it all on one outcome. Once your trades settle, your bonus gets credited.
  5. Use your bonus: After your bonus is credited, you have seven days to deploy it across any available markets on Kalshi's platform.

Want to learn more about how Kalshi stacks up against other prediction markets? Read our Kalshi vs. Polymarket comparison to see which platform suits your trading style.

Trading is risky, always trade responsibly. If your activity is becoming a problem, support is available by calling 1-800-522-4700.

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Jeff Watters
JEFF WATTERS

An award-winning author at just six years old (it’s true!), Jeff has parlayed early-life accolades into a prominent role in the sports betting content space with Sports Illustrated. As content manager, he leads a talented team of expert betting analysts and sportsbook reviewers focused on delivering industry-best experiences to North American bettors. Jeff joined SI in 2024 and has since been a driving force in enhancing the team’s sports betting coverage. With his inventive mindset and relentless pursuit of "best-in-class" content, Jeff ensures SI readers have access to unparalleled betting analysis that’s comprehensive, unbiased, and well-researched. Jeff’s primary goal is to give new and casual bettors the confidence they need to come to their own conclusions when deciding how and where to bet online. Before joining the SI team, Jeff was a senior editor at Covers, where he laid much of the groundwork for the brand’s commercial sports betting content strategy. Known for his industry knowledge and product expertise, Jeff has been a leading voice with his coverage of burgeoning legal sports betting markets like New York, Ohio, and Ontario. An avid bettor himself, Jeff is a strong proponent of line shopping and sticking with a consistent, manageable unit size. He primarily wagers on MLB, NFL, and NHL player props and cites bet365, Pinnacle, and Sports Interaction as his most-used sportsbooks. Jeff holds a BBA from St. Francis Xavier University. His work has been featured in Newsweek and referenced in news media outlets like the Calgary Herald, Financial Post, and Toronto Sun. The Nova Scotia native has crafted and edited over 400 articles and guides across the sports, iGaming, e-learning, and software industries since 2020.

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