Hong Kong orders crypto exchanges to hand over user tax data starting 2027

Hong Kong's legislature has passed a law that requires crypto exchanges operating in the city to collect and report customer transaction data for tax purposes, per CoinDesk. The reporting clock starts in 2027. It marks one of the clearest moves yet by a major financial hub to fold digital-asset trading into the tax system.

The sharper edge arrives a year later: from 2028, Hong Kong will automatically share that transaction data with overseas tax authorities. That turns local exchanges into data conduits stretching well past the city's borders, according to CoinDesk.

For exchanges, the law means new plumbing — systems to gather customer transaction records and hand them to regulators on schedule. For traders, it means their on-platform activity is no longer a private matter between them and their exchange.

Hong Kong has spent recent years repositioning itself as a regulated home for crypto, licensing trading platforms rather than pushing them out. This law adds a tax-reporting layer on top of that licensing regime, tightening the grip on who trades what and where the paper trail leads.

It isn't just a Hong Kong story. The 2028 cross-border sharing clause pulls foreign tax agencies into the loop, raising the odds that offshore crypto gains become visible to the user's home country. Exchanges with Hong Kong licenses now have a hard deadline to build compliance teams and reporting rails.