The Czech Ministry of Finance has placed the prediction market Kalshi on its official blacklist of unauthorized internet gambling platforms, forcing local internet service providers to block access to the domain. According to data cited by [lupa.cz], Kalshi recorded approximately 59,2 miliardy amerických dolarů in traded contracts during September 2026 alone, marking a 48% increase from August and accounting for more than 80% of the volume across major tracked prediction platforms.
Czech Regulators Target Kalshi Following Polymarket Ban
The restriction on Kalshi follows a similar enforcement action taken against Polymarket during the summer, establishing a regulatory precedent for event-based trading platforms operating within the Czech Republic. New York-based Kalshi allows users to wager on real-world outcomes such as interest rate decisions, weather temperatures, box office numbers, and election results. Internet providers in the country are now legally required to block Kalshi.com, with fixed-line Vodafone connections already restricting access to the service, [lupa.cz] reported.
The Institute for Gambling Regulation (IPRH) stated that Polymarket is not an isolated case and that evaluating international platforms under Czech gaming law is an ongoing necessity. The institute emphasized that new digital products cannot bypass player protection rules, anti-money laundering checks, or market oversight simply by altering their terminology. Total trading volume on Kalshi reached approximately 238,8 miliardy dolarů between January and September 2026, [lupa.cz] and [Forbes Česko] noted.
Regulatory Scrutiny Over Prediction Market Terminology
Regulators argue that the operational mechanics of prediction markets closely mirror traditional wagering despite financial branding. Jan Řehola, director of the Institute for Gambling Regulation, noted in reporting by [Forbes Česko] that if individuals stake money on the uncertain outcomes of real-world events, rules cannot be bypassed simply by labeling a bet as a financial contract or financial instrument.
The IPRH elaborated on this distinction, pointing out that users deposit funds on uncertain future outcomes and wait for validation, matching the fundamental structure of a bet. Instead of wagers, platforms use contracts; instead of odds, they use probabilities; and instead of payouts, they refer to yields. Alongside the Kalshi block, the Ministry of Finance recently warned online influencers in the Czech Republic against promoting illegal gambling, reminding creators that violations carry penalties reaching millions of crowns, [lupa.cz] stated.
Frequently Asked Questions About the Kalshi Restrictions
Why did the Czech Ministry of Finance block Kalshi?
The ministry classified Kalshi as an unauthorized internet gambling provider because its prediction markets function similarly to bets on uncertain real-world events, operating without the regulatory approvals required under Czech gaming laws.
What trading volume did Kalshi record prior to the ban?
Kalshi recorded approximately $59.2 billion in traded contracts during September 2026, representing a 48% increase from August, with a total volume of $238.8 billion between January and September 2026, according to [lupa.cz] and [Forbes Česko].
How are internet service providers enforcing the restriction?
Czech internet providers are required to block access to Kalshi.com, and the platform is already unavailable on fixed-line networks such as Vodafone, as reported by [lupa.cz].