Japan's FSA is transferring oversight of Bitcoin, Ethereum and 103 other cryptocurrencies from payment law to the country's securities framework, cutting capital gains tax to 20% and mandating exchange liability reserves.
Japan's Financial Services Agency is advancing the most comprehensive overhaul of the country's cryptocurrency regulatory framework since it pioneered exchange licensing in 2017. The reforms, which began taking shape in April 2026, would reclassify 105 cryptocurrencies — including Bitcoin and Ethereum — from payment instruments regulated under the Payment Services Act to financial products subject to the Financial Instruments and Exchange Act, the same legislation governing stocks, bonds, and listed derivatives. The reclassification was recommended by the Financial System Council's working group in late 2025 and is expected to be submitted for enactment in the 2026 ordinary parliamentary session.
The centrepiece of the package is a reduction in the capital gains tax rate applicable to the 105 approved cryptocurrencies, from a graduated income tax schedule that can reach 55% at higher income bands to a flat 20% — identical to the rate levied on gains from equities. The reform also introduces loss-offset provisions, allowing investors to deduct crypto losses against gains and carry forward losses for up to three years. These provisions have existed for equity investors for decades but were previously unavailable to cryptocurrency holders, creating a structural tax disadvantage that industry groups had argued discouraged institutional participation.
The implications extend well beyond retail tax planning. The shift to Financial Instruments and Exchange Act oversight introduces mandatory liability reserves for exchanges, prohibitions on insider trading comparable to those applicable in equity markets, and custody and disclosure requirements that align Japan's framework with international standards being implemented under the European Union's Markets in Crypto-Assets Regulation. Full legislative implementation is expected in 2027, with certain provisions — including custody requirements — to take effect within one year of parliamentary enactment.
How the Securities Law Transition Reshapes Exchange Operations
The transfer of crypto oversight from the Payment Services Act to the Financial Instruments and Exchange Act is not merely a change in legal categorisation. Under the FIEA, centralised crypto exchanges must register as Type 1 Financial Instruments Businesses — the same category that governs securities broker-dealers operating in Japanese equity markets. That classification brings requirements for sophisticated risk-management systems, mandatory transaction review processes, advanced internal controls, and annual audits of asset segregation conducted by certified public accountants.
Exchanges will be required to maintain mandatory liability reserves calibrated to each platform's trading volume and regulatory incident history. These reserves must be structured to permit immediate payout to customers in the event of a hack, fraud, operational error, or unauthorised withdrawal. Approved insurance policies may count toward the reserve requirement, providing platforms with some flexibility in how they satisfy the obligation. The custody framework additionally specifies cold-to-hot wallet storage ratios — the proportion of customer assets that must be held in offline cold storage versus operationally accessible hot wallets — addressing one of the most frequently exploited vulnerabilities in historical exchange failures.
Insider trading prohibitions will apply to the 105 approved cryptocurrencies on the same basis as equities, closing a regulatory gap that critics have identified since Japan first licensed exchanges in 2017. Administrative monetary penalties, previously reserved for securities violations, will extend to crypto market misconduct. The FSA is also expected to deploy AI-powered surveillance tools to detect abnormal trading patterns and potential market manipulation across licensed platforms, according to the Financial System Council's recommendations published in late 2025.
Coincheck, DMM Bitcoin, and the Incidents That Shaped Reform
Japan has been at the frontier of cryptocurrency regulation since 2017, when it became the first major economy to formally license crypto exchanges and recognise Bitcoin as a legal payment method. The regulatory architecture built then was progressive for its time but was designed for a nascent market, and it has been reshaped by two major incidents that directly exposed the inadequacy of the original custody standards.
In January 2018, hackers stole approximately $530 million in NEM tokens from Coincheck's exchange — at the time one of the largest thefts in the history of the asset class. The attackers exploited the fact that the NEM tokens were held in internet-connected hot wallets rather than cold storage, a basic operational security failure that the Payment Services Act's original rules had not explicitly prohibited. Coincheck reimbursed all 260,000 affected customers from company capital, avoiding broader market disruption, but the FSA issued immediate business improvement orders and conducted its first-ever raid on a crypto exchange in February 2018.
The DMM Bitcoin breach of May 2024, which resulted in the loss of approximately $305 million — 48.2 billion yen — reinforced the pattern. As with Coincheck, inadequate custody arrangements were central to the failure. The 2026 reforms' emphasis on mandatory liability reserves, prescribed cold-wallet ratios, and annual custody audits represents a direct legislative response to both incidents. Japan's regulatory history in crypto has followed a consistent cycle: market failure, emergency response, and subsequent codification — a process that has progressively tightened the framework over a decade of operation.
Industry Reaction: Established Platforms Positioned, Smaller Operators Under Pressure
Japan's regulated exchange sector — comprising approximately 30 FSA-licensed platforms including bitFlyer, Coincheck, GMO Coin, Bitbank, and SBI VC Trade — has responded to the proposed overhaul with a mixture of guarded support and concern about compliance costs. Established platforms that already maintain voluntary reserves, advanced compliance infrastructure, and significant balance sheets are better positioned to absorb the additional requirements imposed by the FIEA transition. Smaller operators face more acute pressures: industry participants have indicated that approximately 90% of domestic exchanges currently operate at a loss, making elevated compliance expenditure a potentially existential challenge for marginal platforms.
The international implications are already visible. Bybit, the international exchange, announced it would phase out services in Japan starting 2026, citing the regulatory burden as the primary driver. Foreign firms that wish to operate in Japan under the new framework must establish a local subsidiary — no foreign crypto exchange has successfully registered as a branch office under the current regime — satisfy minimum capital requirements, maintain physical offices, and complete a registration process that typically takes up to six months. Meeting the upgraded FIEA standards will add capital requirements, staffing obligations, and reporting systems on top of that baseline.
Institutional financial firms are responding differently. Mitsubishi UFJ Trust, Nomura, Daiwa, and Mizuho are reportedly preparing regulated crypto investment trusts designed to operate within the new framework, according to industry reporting. Their positioning reflects a calculation that the costs of compliance are outweighed by access to a newly legitimised asset class with a clearer legal basis. That institutional posture is consistent with how Japanese financial conglomerates approached equity derivatives and other complex financial products following their regulatory formalisation — initially cautious entry followed by rapid scaling once the legal architecture was confirmed.
Japan's Model Compared With MiCA and the US Approach
Japan's approach shares significant structural features with the EU's Markets in Crypto-Assets Regulation, which came into full effect in December 2024. Both frameworks implement mandatory custody segregation, investor liability protections, and comprehensive disclosure requirements. The FSA has explicitly cited MiCA standards as informing the design of Japan's new custody rules. Where the two frameworks diverge is primarily in their architecture: MiCA constitutes a standalone unified code applicable uniformly across all 27 EU member states, whereas Japan is integrating crypto within its existing Financial Instruments and Exchange Act rather than creating a separate regulatory category. Japan's 20% flat capital gains rate compares favourably with the capital gains treatment in most EU jurisdictions, though MiCA itself does not govern taxation.
The United States, by contrast, continues to advance a fragmented approach across the Securities and Exchange Commission, the Commodity Futures Trading Commission, and other bodies, with market structure legislation still working through Congress. Singapore and the United Arab Emirates have positioned themselves as more permissive hubs, with lighter-touch licensing regimes that impose lower compliance burdens on smaller or more experimental crypto businesses. Japan's heavier requirements may be a disadvantage for attracting speculative or early-stage projects but an advantage for firms that prioritise the regulatory certainty and reputational standing that comes with operating under the world's oldest and most detailed crypto licensing framework.
The 105-cryptocurrency approval list introduces a distinctive structural feature that has no direct equivalent in MiCA or US regulation. By reserving the 20% preferential tax rate for assets meeting the FSA's criteria — covering project transparency, issuer financial stability, technological soundness, and price stability risk — Japan effectively uses the tax code as a quality filter. Assets that do not qualify, including most speculative tokens and memecoins, remain subject to rates as high as 55%. The asymmetry is deliberate: it channels retail and institutional capital toward assets the FSA considers structurally robust while preserving access to the broader market for sophisticated participants who understand the higher tax consequences. Whether that model proves effective at channelling capital toward higher-quality projects, or simply reduces market diversity, will likely be closely observed by regulators in other jurisdictions weighing how to calibrate their own frameworks.
