Japan Strengthens DeFi Regulations — Structural Transformation of Crypto
The Japanese government's policy to impose reporting obligations on exchanges for DeFi projects is an attempt by the world's third-largest economy to redraw the boundary between crypto asset "freedom" and "order," marking a turning point in global regulatory trends.
── Understand in 3 points ─────────
- • The Japanese government is moving to formally announce a policy to strengthen regulations on DeFi projects in early 2026, obligating exchanges to report detailed user transaction data.
- • The Financial Services Agency (FSA) is leading an initiative to incorporate DeFi protocols into the existing financial regulatory framework through revisions to the Payment Services Act and the Financial Instruments and Exchange Act.
- • The monthly trading volume of crypto asset exchanges in Japan is estimated to reach approximately 5 trillion JPY in late 2025, with DeFi-related transactions accounting for about 15-20% of that.
── NOW PATTERN ─────────
Japan's DeFi regulation is a structural turning point where "regulatory capture" by the existing financial order seeking to incorporate decentralized technology intersects with a "backlash" against the laissez-faire period of crypto assets, with "path dependency" on past financial regulatory patterns guiding the regulatory design.
── Probability and Response ──────
• Base case 55% — Specific discussions on reporting obligation specifications at the FSA's Financial System Council, timing of the submission of the revised bill to the Diet, announcements of system investments by exchanges, data on DeFi users migrating overseas.
• Bull case 20% — Explicit mention of crypto asset tax reform in the 2026 Tax Reform Outline, approval of crypto asset funds for institutional investors, high evaluation in FATF mutual assessment, announcement of compliant DeFi protocol launches.
• Bear case 25% — FSA notification restricting DEX access, Japan IP block by major DeFi protocols, announcements of web3 startups relocating overseas, decision to postpone crypto asset tax reform.
📡 THE SIGNAL — What Happened
Why it matters: The Japanese government's policy to impose reporting obligations on exchanges for DeFi projects is an attempt by the world's third-largest economy to redraw the boundary between crypto asset "freedom" and "order," marking a turning point in global regulatory trends.
- Policy — The Japanese government is moving to formally announce a policy to strengthen regulations on DeFi projects in early 2026, obligating exchanges to report detailed user transaction data.
- Regulatory Framework — The Financial Services Agency (FSA) is leading an initiative to incorporate DeFi protocols into the existing financial regulatory framework through revisions to the Payment Services Act and the Financial Instruments and Exchange Act.
- Market Size — The monthly trading volume of crypto asset exchanges in Japan is estimated to reach approximately 5 trillion JPY in late 2025, with DeFi-related transactions accounting for about 15-20% of that.
- International Trends — As major countries like the EU (MiCA regulation), the US (SEC/CFTC jurisdiction disputes), and Singapore (MAS licensing system) strengthen DeFi regulations, Japan is exploring its own regulatory approach.
- Industry Reaction — The Japan Crypto Asset Business Association (JCBA) has indicated a willingness to accept certain regulations but expressed concerns that excessive reporting obligations could hinder innovation.
- Privacy — Among investors, privacy concerns are rising due to strengthened KYC (Know Your Customer) requirements, with some DeFi users reportedly migrating to overseas protocols.
- Tax System — Crypto asset tax rates are up to 55% (comprehensive taxation as miscellaneous income), and regulatory reinforcement is progressing in parallel with discussions on shifting to separate self-assessment taxation (a flat 20%).
- Technical Challenges — The definition of "exchange" in decentralized protocols is ambiguous, making the scope of DEX (decentralized exchanges) to be regulated a technical and legal issue.
- Anti-Money Laundering Measures — Compliance with FATF (Financial Action Task Force) Travel Rule is a background factor, and Japan, leveraging its experience as G7 chair, is rushing to conform to international standards.
- Political Background — The new administration after the 2025 LDP presidential election is seeking a balance between web3 promotion and regulation, with the party's Digital Society Promotion Headquarters involved in regulatory design.
- Market Impact — Following reports of strengthened regulations, major crypto assets listed on domestic exchanges temporarily fell by 5-10%, then began to recover, but uncertainty persists.
To understand Japan's strengthened DeFi regulations, it is necessary to analyze both the historical context of the country's financial regulations and the global regulatory trends surrounding crypto assets.
Japan's relationship with crypto assets dates back to the 2014 Mt. Gox incident. The collapse of Mt. Gox, then the world's largest Bitcoin exchange, due to the loss of approximately 47 billion JPY worth of Bitcoin, deeply shocked Japanese regulators. Triggered by this incident, Japan enacted the revised Payment Services Act in 2017, introducing a registration system for crypto asset exchanges ahead of the rest of the world. At the time, Japan garnered international attention as a "crypto asset advanced nation," adopting a stance to promote healthy market development by providing a regulatory framework.
However, the 2018 Coincheck incident (loss of approximately 58 billion JPY worth of NEM) again shook the industry, leading the FSA to significantly strengthen its oversight of exchanges. The Japan Virtual and Crypto Asset Exchange Association (JVCEA), a self-regulatory organization, was established, building an autonomous governance system for the industry. The lesson from this period is clear—Japanese regulators have repeatedly followed a reactive pattern of "regulating after an incident occurs."
Entering the 2020s, the rapid growth of DeFi (decentralized finance) posed new regulatory challenges. Traditional regulations were premised on centralized exchanges (CEXs), but decentralized protocols like Uniswap, Aave, and Compound have the structural characteristic of "no administrator," making them difficult to capture within existing regulatory frameworks. DeFi usage also expanded within Japan, with access from Japan to DeFi protocols reportedly reaching about 25% of all crypto asset users by 2023.
The international context is also crucial. In 2023, the EU adopted the MiCA (Markets in Crypto-Assets) regulation, which began phased implementation in 2024. In the US, the SEC indicated its regulatory stance through the Ripple lawsuit and Binance lawsuit, and comprehensive federal law discussions on crypto assets intensified in 2025. FATF called for the application of the "Travel Rule" to crypto assets, urging countries to strengthen regulations on VASPs (Virtual Asset Service Providers). As a G7 member, particularly as the chair of the G7 Hiroshima Summit in 2023, Japan was in a position to promote international cooperation on crypto asset regulation.
Against this backdrop, the concrete design of DeFi regulations accelerated within the Japanese government from late 2025. The web3 project team of the LDP Digital Society Promotion Headquarters, while positioning crypto assets as a pillar of growth strategy, also needed to respond to international pressure to strengthen measures against money laundering and terrorist financing. This antinomy of "promotion" and "regulation" is the structural tension underlying current policy.
Notably, Japan's regulatory approach is seeking a "third way" that differs from both the EU's comprehensive regulation and the US's enforcement-based regulation. The method of imposing reporting obligations on exchanges is a strategy that does not directly regulate decentralized protocols themselves, but rather uses exchanges (on-ramps and off-ramps), which are the points of contact between users and protocols, as regulatory anchor points. This is an extension of Japan's traditional financial regulatory method—indirect control through financial institutions.
However, this method has fundamental limitations. The essence of DeFi is the elimination of intermediaries, and peer-to-peer transactions or fund movements via cross-chain bridges that do not go through exchanges cannot be captured by reporting obligations to exchanges. The Japanese government faces a dilemma: if the regulatory net is too narrow, illicit transactions will increase; if it is too broad, technical implementation becomes difficult. The strengthened DeFi regulations in 2026 are a provisional answer to this dilemma, not a final solution.
The delta: The Japanese government's concretization of DeFi regulation in the form of reporting obligations for exchanges has brought the structural conflict between "freedom and anonymity" versus "transparency and investor protection" in the crypto asset market to the policy level. This is not merely a regulatory change in one country, but the beginning of a historical phase where decentralized technology directly clashes with national control systems.
🔍 BETWEEN THE LINES — What the News Isn't Saying
Ostensibly, "investor protection" and "anti-money laundering measures" are cited as reasons for regulatory reinforcement, but the essential motives are to secure international standing ahead of the FATF's 5th mutual assessment and to recover uncaptured tax revenue from crypto asset transactions. The FSA's insistence on reporting obligations through exchanges is not an optimal solution based on an understanding of DeFi's technical realities, but rather a prioritization of "easy-to-implement regulations" that can be handled by existing supervisory infrastructure. Furthermore, the aspect of buying time to secure a preparation period for traditional financial institutions to fully enter the digital asset business should not be overlooked.
NOW PATTERN
Regulatory Capture × Backlash × Path Dependency
Japan's DeFi regulation is a structural turning point where "regulatory capture" by the existing financial order seeking to incorporate decentralized technology intersects with a "backlash" against the laissez-faire period of crypto assets, with "path dependency" on past financial regulatory patterns guiding the regulatory design.
Intersection of Dynamics
The three dynamics of "regulatory capture," "backlash," and "path dependency" mutually reinforce each other in Japan's DeFi regulation, creating a unique policy equilibrium.
Path dependency dictates the basic design of regulation (the gatekeeper model), within which a structure is formed where existing players capture the regulatory process. It is precisely because of the path-dependent framework of the exchange registration system that registered exchanges can leverage their advantage of being "inside the regulation," and regulatory capture is predicated on the existence of path dependency.
Simultaneously, the dynamics of backlash determine the timing and direction of regulatory reinforcement. In phases where regulation is strengthened as a reaction to the laissez-faire period of web3 promotion, regulators fear the risk of "doing too little" more than the risk of "doing too much," leading to a conservative approach that simply extends existing frameworks (path dependency). This is why the "reporting obligation for exchanges," a technically imperfect but institutionally implementable regulatory method, was adopted.
Furthermore, a mechanism exists where regulatory capture amplifies the intensity of the backlash. Existing registered exchanges and traditional financial institutions have an incentive to support and promote regulatory reinforcement for their own competitive benefit, which swings the policy pendulum more strongly towards "regulation." If regulation becomes excessive, new entry is suppressed, and the oligopoly of existing players is strengthened—this implies further reinforcement of regulatory capture.
The intersection of these three dynamics suggests that Japan's DeFi regulation is shaped not by "technical rationality" but by "institutional inertia and the equilibrium of stakeholders." Whether the regulation is effective or not, and whether it fits within the existing institutional framework and does not contradict the interests of key stakeholders, are the factors that actually determine the regulatory design.
📚 PATTERN HISTORY
2006-2007: Enhanced Regulation of Emerging Markets After the Livedoor Incident
Regulatory pendulum swing back triggered by financial scandals
Structural similarities with the present: After the arrest of Takafumi Horie, listing standards for the Mothers section of the Tokyo Stock Exchange were tightened, making it significantly difficult for emerging companies to raise capital. While regulatory reinforcement contributed to restoring market confidence in the short term, in the medium to long term, it delayed the development of Japan's startup ecosystem and, as a result, solidified a structure where unicorn companies are less likely to emerge from Japan.
2010-2011: Gradual Strengthening of FX Leverage Regulations
Management of market structure under the guise of retail investor protection
Structural similarities with the present: The FSA gradually reduced leverage for individual FX trading from a maximum of 400x to 50x, and then to 25x. The ostensible reason was investor protection, but in reality, policy intentions included reducing financial system risk from high-leverage trading and the consolidation of FX brokers. After the regulation, small FX brokers exited the market, and consolidation among major players progressed—a structural change similar to what is expected with DeFi regulation.
2017-2018: Enforcement of the Revised Payment Services Act and Introduction of the Crypto Asset Exchange Registration System
Extended application of existing regulatory frameworks to new technologies
Structural similarities with the present: Japan legally defined Bitcoin as a "payment method" and introduced an exchange registration system. While it garnered attention as the world's first full-fledged crypto asset regulation, deficiencies in the system were exposed by the Coincheck incident the following year, leading to further regulatory reinforcement. The "proactive regulatory framework" approach enhanced market reliability but also revealed the dilemma of institutions failing to keep pace with rapid technological evolution.
2023-2024: Adoption and Enforcement of EU MiCA Regulation
Structural transformation of the market through comprehensive crypto asset regulation
Structural similarities with the present: As a result of the EU's implementation of MiCA regulation, small businesses unable to comply with regulations exited the market, accelerating consolidation among major exchanges. On the other hand, the clarification of regulations also facilitated the entry of institutional investors. Japan's DeFi regulation is highly likely to have similar dual effects.
2024-2025: Strengthening of SEC Crypto Asset Enforcement in the US and Subsequent Policy Shift
Abrupt change in regulatory policy accompanying a change in administration
Structural similarities with the present: Under the Biden administration, the SEC, led by Chair Gensler, took a hardline enforcement stance against crypto assets, but regulatory policy shifted significantly with the return of the Trump administration. This is an example where political cycles fundamentally influence the direction of regulation, suggesting that in Japan too, changes in administration or the balance of power within the LDP could sway the future of regulation.
Patterns Revealed by History
Historical patterns show that Japan's financial regulation has repeatedly followed a cycle of "incidents/crises → regulatory reinforcement → excessive regulation → innovation hindrance → relaxation." At each stage of this cycle, a structure where existing major players convert regulation into their competitive advantage (regulatory capture) and a tendency for regulators to extend existing institutional frameworks (path dependency) are consistently observed. In all cases—emerging market regulation after the Livedoor incident, FX leverage regulation, and the crypto asset exchange registration system—regulatory reinforcement contributed to short-term market stabilization but had the long-term effect of suppressing innovation and new entry.
Internationally, EU MiCA regulation and strengthened SEC enforcement in the US have triggered similar structural changes. Market "reorganization and consolidation" through regulation is inevitable, but the opportunity cost of lost innovation during this process is difficult to quantify. The path Japan's DeFi regulation takes is expected to bear a high resemblance to these historical precedents. What is crucial is that the duration until the "relaxation" phase arrives in the regulatory cycle could irreversibly determine Japan's crypto asset industry's position in international competition.
🔮 NEXT SCENARIOS
The Japanese government will enact a revised Payment Services Act in late 2026, gradually implementing DeFi transaction reporting obligations for exchanges starting April 2027. The scope of regulation will initially be limited to DeFi transactions conducted via domestic registered exchanges, with direct regulation of DEXs (decentralized exchanges) and cross-chain bridges being postponed due to technical difficulties. The specific content of the reporting obligation will be for transactions exceeding 1 million JPY, requiring exchanges to report user transaction history and connected protocol information to the FSA. Domestic exchanges will be pressed to strengthen their compliance systems, and small to medium-sized exchanges will choose to scale down or withdraw from business due to increased compliance costs. As a result, market consolidation will progress, strengthening an oligopolistic structure where 3-5 major players account for over 80% of the domestic market share. Meanwhile, some DeFi users (an estimated 15-20%) will migrate to overseas exchanges or directly access DEXs using VPNs, leading to limitations in the effectiveness of the regulation. Internationally, Japan's regulation will be evaluated as compliant with FATF standards, but some criticism of it being "Galapagos regulation" will emerge. Tax reform (transition to separate self-assessment taxation) will be carried over to the 2027 Tax Reform Outline, with political compromise sought by discussing regulatory reinforcement and tax relaxation as a package. After an initial decline, the market will recover, viewing regulatory clarity as a positive factor, with domestic Bitcoin trading volume at the end of 2026 decreasing by only 10-15% compared to pre-regulation levels.
Implications for Investment/Action: Specific discussions on reporting obligation specifications at the FSA's Financial System Council, timing of the submission of the revised bill to the Diet, announcements of system investments by exchanges, data on DeFi users migrating overseas.
Significant crypto asset tax reform will be realized simultaneously with regulatory reinforcement, which will be positively received by the market as a "regulation and promotion package." Specifically, the transition of crypto assets to separate self-assessment taxation (20% tax rate) will be included in the 2026 Tax Reform Outline and implemented concurrently with DeFi regulations. This "carrot and stick" approach will lead the market to view regulation as a "sign of maturity," accelerating the full-scale entry of institutional investors. Japan's unique "Compliant DeFi" framework will attract international attention, and new DeFi protocols based on KYC-verified wallets will be developed from Japan. Domestic blockchains such as Astar Network and Japan Open Chain will build DeFi ecosystems that fit this framework, with Japan leading the global standard for "regulation-compliant DeFi." Japan will also achieve the highest rating in FATF's assessment, enhancing international trust in Japan's crypto asset market. As a result, overseas DeFi projects will actively consider entering the Japanese market, and Tokyo will stand alongside Singapore and Hong Kong as an Asian crypto asset hub. By the end of 2026, domestic crypto asset trading volume will increase by over 30% year-on-year, and the proportion of DeFi-related transactions will expand to over 25%.
Implications for Investment/Action: Explicit mention of crypto asset tax reform in the 2026 Tax Reform Outline, approval of crypto asset funds for institutional investors, high evaluation in FATF mutual assessment, announcement of compliant DeFi protocol launches.
Regulation will be stricter than expected, leading to a de facto ban on DeFi-related transactions. The FSA will include connections to DEX aggregators and cross-chain bridges as "intermediation of transactions with unregistered entities" under regulatory scope, forcing domestic exchanges to cut off connections with DeFi protocols. This will effectively make legal DeFi use impossible in Japan, leading to a state that could be called "DeFi isolation" (DeFi sakoku). Concurrently, crypto asset tax reform will be postponed, and the high tax rate of up to 55% will be maintained, accelerating the outflow of crypto asset power users and developers overseas. Migration and corporate relocation to crypto-friendly jurisdictions such as Singapore, Dubai, and Switzerland will increase, hollowing out Japan's web3 ecosystem. Furthermore, new hacking incidents or internal fraud at domestic exchanges will be exposed (due to system vulnerabilities or staffing shortages during regulatory compliance), further eroding market confidence. Internationally, Japan's regulation will be compared to China's complete ban on crypto assets (2021) and become synonymous with hindering innovation. By the end of 2026, domestic crypto asset trading volume will decrease by over 40% year-on-year, and web3 startups in Japan will successively relocate overseas.
Implications for Investment/Action: FSA notification restricting DEX access, Japan IP block by major DeFi protocols, announcements of web3 startups relocating overseas, decision to postpone crypto asset tax reform.
Key Triggers to Watch
- Publication of the FSA's Financial System Council report on DeFi regulation: April-June 2026
- Submission of revised bills for the Payment Services Act and Financial Instruments and Exchange Act to the Diet: Autumn extraordinary session of the Diet (September-December) 2026
- Treatment of crypto asset taxation in the 2027 Tax Reform Outline: December 2026
- FATF's 5th mutual assessment of Japan's crypto asset regulation: 2026-2027
- Announcement of response policies for DeFi-related services by major domestic exchanges: Q2 2026 onwards
🔄 TRACKING LOOP
Next Trigger: Publication of the Financial Services Agency (FSA) and Financial System Council's "Study Group on the Ideal State of Responding to Digital and Decentralized Finance" report — scheduled for April-June 2026. The content of this report will be the most important milestone in determining the direction and intensity of DeFi regulation.
Continuation of this Pattern: Tracking Theme: Japan's DeFi Regulatory Legislative Process — The next milestones are the Financial System Council report (Q2 2026), followed by the submission of revised bills to the Diet (Autumn 2026) and the 2027 Tax Reform Outline (December 2026).
🎯 ORACLE DECLARATION
Prediction Question: Will a legal amendment including DeFi-related transaction reporting obligations be passed by the Diet in Japan by December 31, 2026?
Judgment Deadline: 2026-12-31 | Judgment Criteria: Based on whether a revised bill for the Payment Services Act or the Financial Instruments and Exchange Act, explicitly stating reporting obligations for exchanges related to DeFi projects, has been passed and enacted by the Diet as of December 31, 2026. Response solely through FSA notifications or guidelines will be judged as "NO."
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