Japan Expands Crypto Compliance Regime with Cross-Border Tax Surveillance

Japan's National Tax Agency is implementing the OECD-backed Crypto-Asset Reporting Framework (CARF) starting January 1, 2026, requiring crypto exchanges to collect tax residence information and foreign tax identification numbers from users. The framework mandates that service providers submit annual reports by April 30, 2027, covering transaction details including user identities, jurisdictions, and transaction values, which can be automatically shared with foreign tax authorities under existing treaties. Users with existing accounts must provide certifications by December 31, 2026, while new users face immediate documentation requirements matching banking standards. The Financial Services Agency simultaneously expanded compliance infrastructure through the JVCEA Green List, fast-tracking listings for 30+ approved tokens while building sophisticated surveillance capabilities designed to prevent tax evasion through crypto assets.

Japan's Implementation of OECD Crypto-Asset Reporting Framework

• ▪The OECD-backed Crypto-Asset Reporting Framework is designed to let tax authorities automatically exchange information on certain crypto transactions involving non-residents.
• ▪Japan's National Tax Agency is preparing to implement the OECD-backed Crypto-Asset Reporting Framework (CARF).
• ▪Japan's Crypto-Asset Reporting Framework takes effect from January 1, 2026.
• ▪The first reports under Japan's Crypto-Asset Reporting Framework are due in 2027.

Data Collection and Reporting Requirements for Exchanges and Users

• ▪The first annual reports from crypto-asset service providers in Japan are due by April 30, 2027, covering 2026 activity.
• ▪Users who already have covered crypto transactions with service providers as of December 31, 2025, must provide required certification by December 31, 2026.
• ▪Users conducting crypto transactions with covered service providers on or after January 1, 2026, will need to submit self-certifications stating their name, address, jurisdiction of residence, and foreign tax identification number.

Perspective of Crypto-asset service providers in Japan

• ▪Annual reporting deadlines requiring crypto-asset service providers to submit transaction data by April 30, 2027, create significant operational and technical compliance costs.
• ▪Crypto-asset service providers in Japan must build new compliance infrastructure to meet CARF requirements by January 1, 2026, including systems for identity verification and tax residence classification.
• ▪The JVCEA Green List fast-tracking mechanism for 30+ approved tokens provides regulatory clarity that reduces listing approval timelines for compliant exchanges.

Perspective of Tax authorities and international regulators

• ▪Japan's implementation of CARF by 2026 positions the country as an early adopter of international standards for crypto tax compliance and cross-border cooperation.

Perspective of Crypto users in Japan

• ▪Crypto users in Japan conducting transactions after January 1, 2026, must provide self-certifications including name, address, tax jurisdiction, and foreign tax identification numbers to service providers.
• ▪Existing crypto users in Japan as of December 31, 2025, face a one-year deadline to submit required certifications or risk losing access to their accounts.

2 sources