Hong Kong Passes CARF Crypto Reporting Law for 2027

TL;DR

• Hong Kong passed legislation implementing the OECD’s Crypto-Asset Reporting Framework, requiring covered providers to begin collecting required customer and transaction information from January 1, 2027.
• The Inland Revenue Department will automatically exchange CARF data with partner jurisdictions in 2028, while reciprocal exchanges will operate under confidentiality and security safeguards.
• The amended Common Reporting Standard starts in 2028, with international exchanges beginning in 2029 and rules designed to avoid duplicate reporting.

Hong Kong’s Legislative Council passed legislation implementing the OECD’s Crypto-Asset Reporting Framework, or CARF, requiring covered crypto service providers to collect tax data from January 1, 2027. In the official announcement, the government said the framework will support automatic exchanges with partner jurisdictions from 2028. The law expands tax transparency rather than introducing a new crypto tax rate, increasing compliance requirements for crypto exchanges and other covered intermediaries under Hong Kong’s nexus rules.

Hong Kong Sets CARF Reporting Timeline

CARF requires reporting crypto-asset service providers to perform due diligence and collect information for annual reporting to tax authorities. Hong Kong’s Inland Revenue Department says covered providers include businesses facilitating exchanges between crypto and fiat currencies or between crypto-assets, depending on their connection to the jurisdiction. The 2027 start date applies to data collection and reporting obligations, while international exchange begins in 2028, aligning Hong Kong with the global CARF rollout.

The framework captures identifying and tax-residency information alongside aggregated transaction data. Its purpose is to let tax authorities in participating jurisdictions receive standardized information about reportable crypto activity on a reciprocal basis. Hong Kong said exchanges will occur only with suitable partners and under confidentiality and data-security safeguards. The regime creates a structured cross-border reporting channel for crypto transactions rather than making customer information public, against growing global onchain taxable activity.

The legislation also implements the OECD’s amended Common Reporting Standard on a separate timetable. The revised CRS will take effect in Hong Kong in 2028 and expand coverage of digital financial products, with the Inland Revenue Department beginning automatic exchanges under the updated standard in 2029. Rules are intended to prevent duplicate reporting where information is already reported under CARF. CARF and the amended CRS therefore operate on distinct implementation schedules, following Hong Kong’s consultation on international crypto reporting standards.

The Inland Revenue Department plans to issue implementation guidance and has established a dedicated team to provide technical support. Hong Kong has conducted annual automatic exchanges of traditional financial account information under the CRS since 2018, giving authorities an existing framework for international tax cooperation. The new law extends that transparency architecture into crypto markets while preserving separate reporting timelines for CARF and the amended CRS, placing Hong Kong alongside jurisdictions preparing more systematic digital-asset tax reporting as Asian crypto tax frameworks evolve across markets.