Japan's Diet Passes FIEA Amendment, Cuts Crypto Tax and Opens ETF Path

Japan reclassified Bitcoin and roughly 105 crypto assets as financial instruments on July 15, but the 20% tax rate and spot ETF approvals are still years away, and the compliance architecture being built around them deserves as much attention as the headline numbers.

Key takeaways

• Japan's National Diet gave final approval on July 15, 2026 to an amendment moving crypto assets out of the Payment Services Act and into the Financial Instruments and Exchange Act, the same statutory framework governing stocks and bonds.
• A separate 2026 Tax Reform Outline targets a flat 20.315% tax rate on crypto gains (down from up to 55%), effective January 1, 2028 for individual traders, and only on assets traded through FSA-licensed exchanges.
• The law raises the maximum prison term for unregistered crypto operators from 3 years to 10 years and creates new insider-trading prohibitions, while leaving self-custody, DeFi, and staking entirely to FSA secondary rulemaking.

Japan's National Diet passed the "Bill for Partial Amendment of the Financial Instruments and Exchange Act and the Payment Services Act" on July 15, following Lower House approval on June 11 and Cabinet submission on April 10. The legislation moves crypto regulation from the Payment Services Act into the FIEA under a new "specified cryptoassets" category, creating the legal architecture for spot crypto ETFs and a path to halving the tax burden on holders. For a market sitting on more than ¥5 trillion in deposits across more than 13 million domestic accounts, the stakes are real.

The detail that matters: the 20% flat rate and the ETF approvals are not in this bill. They run on separate tracks.

What the Law Actually Does, and When

The FIEA reclassification targets fiscal 2027 for full effect. The 20% tax rate (15% national, 5% local, or 20.315% combined) sits in a separate 2026 Tax Reform Outline and is projected to take effect January 1, 2028 for individual traders. A corporate exemption on unrealized gains was already in place as of April 1, 2026. The three-year loss carryforward included in the package is real and meaningful, but it only applies inside the licensed perimeter.

No spot Bitcoin ETF has been filed, approved, or listed. The FIEA reclassification gives the FSA the legal hook to build an ETF approval framework. Japan Exchange Group is reportedly preparing infrastructure; first listings are projected no earlier than 2027, pending FSA secondary rulemaking. Nomura and SBI are both positioning for spot crypto products once that framework exists.

Finance Minister Satsuki Katayama framed the Cabinet submission in April as expanding "the supply of growth capital while ensuring market fairness, transparency, and investor protection." Koichi Kano, Japan head at QCP Group, said the legislation gives market participants "long-awaited clarity," per Bloomberg. SBI's chief executive criticized the pace as "extremely slow."

Per legal analysis of the bill text published by So & Sato Law Firm, approximately 105 tokens listed on FSA-licensed exchanges, including Bitcoin and Ether, are expected to qualify as specified cryptoassets. Stablecoins are carved out entirely and remain under the PSA.

The Frozen Capital and the Compliance Trap

The institutional case is straightforward. Japan's 55% top rate on crypto gains (45% national plus roughly 10% local inhabitant tax, assessed as miscellaneous income) created genuine seller paralysis. Holders sitting on large unrealized gains had a 55-cent-on-the-dollar reason not to sell, and a 55-cent reason not to buy more after realizing anything. A move to 20% removes that inertia. At the institutional level, Bitcoin is the primary product Nomura and SBI are building toward. That is a real supply-side demand shift arriving in a market that has never had a regulated wrapper for conservative capital, and the Japan yen intervention context makes the timing notable, Japan's financial establishment is actively looking for productive homes for domestic capital.

The other side of the trade is where it gets sharp. The 20% rate applies only to specified cryptoassets traded on FSA-licensed exchanges. Staking rewards, DeFi yields, NFTs, and trades on foreign or unregistered platforms stay taxed as miscellaneous income at up to 55%. That is a two-tier tax structure that financially penalizes any Bitcoin activity outside the surveillance perimeter. Every holder who wants the lower rate is incentivized to move their Bitcoin onto a licensed, KYC-reporting exchange. The MiCA playbook produced the same gravity in Europe, regulatory compliance pressure, not an outright ban, is the mechanism that routes holders into the monitored system.

The criminal penalty escalation reinforces the architecture. Maximum prison terms for unregistered crypto operators jump from 3 years to 10, and the maximum fine rises from ¥3 million (roughly $18,500) to ¥10 million. New insider-trading prohibitions cover anyone with material non-public information on issuers, exchange operators, and pending listings or delistings. The FSA has signaled it will intensify enforcement against unregistered overseas services targeting Japanese retail. Industry representatives warned during FSA working-group meetings that roughly 90% of Japan's domestic exchanges already operate at a loss. That compliance burden consolidates the market toward megabank-affiliated operators who can absorb it.

The bill text does not address self-custody, DeFi, staking, or derivatives. Those determinations are left entirely to FSA secondary rulemaking expected through 2026 and 2027. Until those rules publish, self-custody and peer-to-peer activity sit in a regulatory gray zone, not explicitly protected, not explicitly prohibited. The DAC8 framework in the EU established what that gray zone looks like when regulators resolve it: reporting requirements that treat the self-sovereign stack as a compliance gap to close.

The falsifiable version of the bullish thesis: if FSA secondary rulemaking explicitly carves self-custody out of the FIEA registration requirement, preserves peer-to-peer Bitcoin transfer without mandatory exchange intermediation, and applies the 10-year prison penalty narrowly to fraudulent unregistered operators rather than non-custodial software or informal custody, the regulatory trojan horse concern shrinks substantially and the framework is net positive for Bitcoiners. Watch the secondary rulemaking, not the headline.

What Comes Next

FSA secondary rulemaking runs through 2026 and into 2027. That process will define the ETF approval criteria, the treatment of self-custody, and the enforcement posture toward non-custodial and foreign-platform activity. FIEA reclassification targets fiscal 2027; the 20% tax rate targets January 2028. The Senate crypto tax framework moving through the US simultaneously means Japanese and American regulatory timelines are converging, two of the largest pools of retail and institutional Bitcoin holders are building licensed frameworks at the same moment, and the shape of both will matter for how much of the Bitcoin stack ends up inside the regulated perimeter.

Sources

• So & Sato Law Firm, FIEA Amendment Bill Analysis (May 18, 2026)
• First reported by CoinDesk