Japan Launches CARF Framework, Japanese Crypto Exchange Coincheck Requires Users to Declare Tax Residency Information

Odaily News 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 cross-border opaque asset transfers by sharing transaction information among national tax authorities.

Japanese cryptocurrency exchange Coincheck has notified existing users who opened accounts before December 31, 2025, that they must complete the submission by December 31, 2026. New users opening accounts on or after January 1, 2026, must declare this information at the time of account opening. The declaration includes name, address, date of birth, and the country where tax obligations are held. Users residing solely within Japan do not need to fill in their My Number, but users with overseas residences or those residing in foreign countries must declare their local Taxpayer Identification Number. Japanese crypto exchange Coincheck warns that failure to submit by the deadline or providing false information may result in legal penalties.