Japan launches CARF framework; Japanese cryptocurrency exchange Coincheck requires users to declare their tax and place of residence information.

According to the Crypto Asset Reporting Framework (CARF) established by the OECD and launched in Japan, all users are required to submit information such as their country of tax residence. This system aims to prevent opaque cross-border asset transfers by sharing transaction information among tax authorities of different countries. Japanese cryptocurrency exchange Coincheck advises existing users who opened accounts before December 31, 2025, to submit their information by December 31, 2026, while new users opening accounts after January 1, 2026, must declare their information at the time of account opening. The declaration includes name, address, date of birth, and country of tax obligation. Users residing only in Japan do not need to fill in their My Number, but users with overseas residence or residing abroad must declare their local taxpayer identification number. Coincheck warns that failure to submit by the deadline or providing false information may result in legal penalties.