Japan’s ruling Liberal Democratic Party (LDP) plans to conduct a parliamentary study session on prediction markets in late October 2026, bringing in senior executives from US-based platforms Kalshi and Polymarket. Organized by Masaaki Taira, Chairman of the LDP’s Digital Advanced Finance Parliamentary League, the hearings aim to assist Japanese policymakers in evaluating the legal status, financial classification, and operational viability of event-based wagering platforms under existing statutes.

Legal Ambiguity and Statutory Gambling Restrictions

Japan currently lacks a dedicated statutory category for event-based prediction markets. Their legal standing remains uncertain due to strict anti-gambling provisions contained in Article 185 of Japan’s Penal Code, which prohibits unauthorized wagering outside tightly controlled public sports such as horse racing, bicycle racing, motorboat racing, and lotteries and the separate framework governing integrated resort casinos.

Japanese legal scholars and regulators, including the Financial Services Agency (FSA), maintain a cautious stance on whether prediction contracts should be treated as unauthorized gambling or regulated financial derivatives. The upcoming LDP hearings will focus on contract design, settlement mechanisms, and whether specific event contracts comply with financial instrument definitions or breach criminal gambling prohibitions.
 

Foreign Platform Interest and Long-Term Market Entry Strategies

The legislative initiative follows increasing interest from foreign operators targeting East Asian markets. In August 2026, Representative Taira engaged with executives from both Kalshi and Polymarket during an international fact-finding mission with the LDP’s Blockchain Promotion Parliamentary League.

Polymarket has signaled intent to establish a long-term presence in Japan, reportedly appointing Mike Eidlin to head its regional expansion efforts with a target of securing formal regulatory authorization by 2030. Japanese users are currently restricted from accessing the platform due to local compliance policies. The late-October study sessions represent an initial exploratory step for Japanese lawmakers rather than an immediate licensing mechanism, establishing a foundational dialogue on whether prediction markets require dedicated legislation, financial oversight, or outright prohibition.

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