For years, investing in Bitcoin through a Japanese broker meant dreading tax season. Gains were taxed as "miscellaneous income" at rates up to 55% — the same bracket as lottery winnings. On Thursday, Japan's lower house voted to close that chapter.
The bill moves crypto out of miscellaneous income and into the Financial Instruments and Exchange Act, the same framework governing stocks and bonds. The result: a flat 20% capital gains rate, replacing a progressive scale that hit wealthier investors hardest. That change takes effect in 2028.
The bigger near-term signal for markets is the ETF pathway. Reclassifying crypto as a financial instrument removes the main legal barrier to spot cryptocurrency exchange-traded funds. Japan Exchange Group has said it could list such products as early as 2027, subject to upper house approval — which analysts widely expect to arrive within weeks.
Enforcement tightens substantially. Selling crypto without a license now carries up to 10 years in prison, up from three. Token issuers face disclosure obligations comparable to public company standards, and retail investment in unaudited token offerings is capped at 2 million yen per buyer.
Japan's three largest banks are not waiting for the law to clear. MUFG, SMBC, and Mizuho are jointly developing a yen stablecoin payment network, targeting live transactions by March 2027. With more than 14 million crypto accounts in the country, the regulatory update was a long time coming. Koichi Kano of QCP Group called the legislation "long-awaited clarity for market participants."
The bill now heads to the upper house. Once it passes, the full framework kicks in during 2027. The tax cut follows in 2028 — giving investors and exchanges roughly two years to prepare for a sharply different landscape.
