Japan has adopted the OECD's cryptocurrency reporting framework since January 1, 2026.

Japan officially launched the OECD's Crypto Asset Reporting Framework (CARF) on January 1, 2026. This is a new mechanism aimed at enabling tax authorities worldwide to share information on crypto asset transactions. Japan decided to introduce this mechanism through tax reform, and the National Tax Agency published a promotional brochure for users and advanced preparations for collecting information through exchanges before its implementation last December.