Bitcoin Taxes in Japan — Misc Income, the 2026 Reform, and Tax Filing

This topic explains Japan's crypto tax regime from primary sources — the current miscellaneous-income and progressive-taxation rules, taxable events, cost-basis calculation, and filing procedures. It clarifies that 2026 legislation has settled 20.315% separate-declaration taxation and the move under the FIEA into law, while the start date (January 1, 2027 or 2028) and the precise scope of "specified crypto assets" remain undecided, pending a cabinet order.