The Korea Communications Standards Commission (KCSC) has launched a formal review of the prediction market platform Polymarket to determine if its operations constitute illegal gambling under domestic law. This regulatory scrutiny began around May 21-23, 2026, following a complaint filed against the blockchain-based service. The commission is now weighing whether the platform’s model — which allows users to stake stablecoins on the outcomes of real-world events — violates South Korea’s strict prohibitions on unlicensed online betting.
Polymarket currently operates with a Korean-language interface and remains accessible to domestic users. Under South Korean communications law, this local language support and accessibility bring the platform under the jurisdiction of the KCSC, even if its technical infrastructure is located overseas. Jin Hyun-soo, managing partner at Decent Law Firm, noted that the commission has the authority to block access if a service is found to be targeting Korean users through such localized features.
A decision regarding the platform’s legality is expected within weeks as of May 21. A commission official stated that Polymarket requires a more detailed review than standard gambling sites because it operates as a decentralized prediction market. This review occurs as many top crypto casinos face similar pressure to demonstrate transparency and adhere to regional licensing requirements in an increasingly regulated global market.
Evaluating the legality of prediction markets in South Korea
South Korean authorities are specifically examining whether Polymarket’s structure mirrors illegal gambling services or represents a new type of financial forecasting tool. Unlike traditional sportsbooks, Polymarket does not set fixed bookmaker odds; instead, prices are determined by user-generated contracts. The platform’s proponents argue this makes it a market for information rather than a betting house, but regulators remain skeptical of the mechanics involved in staking digital assets on event outcomes.
The legal stakes are high due to the severity of South Korea’s Criminal Act. Article 246 generally prohibits gambling, with narrow exceptions for state-authorized activities like the lottery, horse racing, and the Kangwon Land Casino. Operating an illegal gambling site can lead to seven years in prison and fines of 70 million won (approximately $48,000). Even individual bettors can face up to five years of imprisonment and significant fines for participating in unauthorized games of chance.
The KCSC is reportedly analyzing how other international regulators have addressed the platform. France, Germany, Italy, and India have already classified Polymarket as illegal gambling and blocked domestic access. In the United States, several states have issued cease-and-desist orders. As crypto liquidations rise and market volatility persists, regulators are moving faster to close perceived loopholes that allow citizens to engage in speculative betting outside supervised channels.
Rising volumes and the future of decentralized forecasting
The regulatory push comes at a time of explosive growth for prediction markets. Bernstein data shows global trading volume reached $51 billion in 2025 and is projected to hit $240 billion by the end of 2026. By 2030, the sector could be worth $1 trillion. This surge reflects a broader trend where altcoin demand shifts toward tokens with specific decentralized utilities, such as blockchain-settled forecasting and data verification.
In South Korea alone, the online gambling market was valued at $9 billion in 2024, with roughly 33 million residents — about 76% of the population — participating in some form of online gambling. Mobile usage accounts for 59% of this activity, making smartphone-accessible platforms like Polymarket a primary concern for the KCSC. Regulators must now decide if the platform serves as a “new type of gambling-related service” that requires immediate intervention.
Polymarket appears to be aware of the tightening net in Asia, recently appointing a representative in Japan to pursue a formal license. For South Korean users, the upcoming ruling will determine whether the platform continues to operate freely or joins the list of blocked overseas services. The KCSC’s final determination will set a significant precedent for how decentralized finance protocols are treated when they overlap with the gaming and betting sectors.