Hong Kong passes crypto tax reporting law, data sharing from 2028

Hong Kong's Legislative Council passed a law on 4 November 2026 that forces crypto exchanges to report customer trades to the tax office. Collection starts in 2027. The data will reach foreign tax authorities from 2028. It adds no new tax.

Lawmakers adopted the Inland Revenue (Amendment) (Crypto-Asset Reporting Framework and Amended Common Reporting Standard) Bill 2026. It writes the OECD's Crypto-Asset Reporting Framework, known as CARF, into local law. CoinDesk reported the vote, and the government confirmed it in a statement the same day.

What the law asks exchanges to do

Under CARF, crypto-asset service providers with a reporting link to Hong Kong must register with the Inland Revenue Department and begin collecting data on 1 January 2027. That net covers exchanges, brokers and dealers, and some crypto ATM operators, according to CoinDesk.

Automatic is the key word. Under these standards, firms do not wait for a tax office to ask about a named person. They file set information every year, in bulk, and governments pass it between themselves on a fixed schedule. The bill was gazetted on 22 May 2026, introduced to the Legislative Council on 3 June, and passed on 4 November.

Registration is the first step. A covered firm must sign up with the department, run customer due diligence, keep records and file an annual return, the government said when the bill was gazetted in May. Miss the mark and the firm, not the customer, carries the compliance load.

Some firms will report twice over. Where a bank or broker also acts as a crypto-asset service provider, gross proceeds from crypto fall under CARF, and the firm may choose to report the same client's other accounts under the amended CRS as well, the Inland Revenue Department said. For a large institution running both traditional and crypto arms, that means two overlapping sets of returns.

These records go deep. Firms must log a customer's name, address, tax residency and tax identification number. They must also track purchases, sales, token-for-token swaps and transfers out to private wallets. From 2028, the Inland Revenue Department will pass annual totals to tax authorities in the places where each customer lives.

Why Hong Kong moved now

Hong Kong has shared bank account information with other tax authorities since 2018, under a separate OECD standard called the Common Reporting Standard, which the government says has helped detect and combat tax evasion. Crypto sat outside that net. CARF closes the gap, using much of the same machinery already applied to bank accounts.

A wider push explains the timing. Hong Kong brought in licensing rules for crypto trading platforms in 2023 and has courted regulated digital-asset business since. Tax transparency is the part global institutions and their auditors expect before they commit.

Christopher Hui, Hong Kong's Secretary for Financial Services and the Treasury, tied the move to the city's standing as a finance hub. Implementing the latest international standards for the automatic exchange of information on tax matters is "crucial" to that reputation, he said. Aligning with those standards, he added, "will reinforce the confidence of crypto-asset service providers."

CARF began as an OECD project. The body published the framework in October 2022 as a reporting standard for crypto, and Hong Kong is now writing it into local law. A finance centre that courts institutional money has little reason to stay outside it.

Both frameworks work on automatic exchange, which is reciprocal by design, so partner jurisdictions are set to send Hong Kong the same class of data on its own residents who trade on exchanges abroad. A local trader using an offshore platform is not out of reach.

What the law does not do

This is a reporting rule, not a tax. Hong Kong still has no capital gains tax on individuals, and the bill creates no new charge on crypto trades. What changes is visibility. Tax treatment still varies sharply by country, as our guide to crypto tax in the UAE shows.

For most retail users, the practical change is small. A platform will ask for more detail at sign-up and will record each customer's tax residency. Someone who files and pays what they owe should see the reports line up with their returns. Someone who moved money across borders and left it off a tax form now faces a paper trail that exists whether they mention it or not.

Reports are not public either. They flow between tax authorities, not onto a website, and reach a foreign agency only when a customer is a tax resident there. For a trader who already declares income, little changes in practice. For one who assumed crypto was invisible to the taxman, that assumption no longer holds.

A second track runs alongside the crypto rules. The revised Common Reporting Standard pulls more products into scope, including certain electronic money and digital-money arrangements that earlier rules missed. It takes effect in 2028, and the first automatic exchanges under it follow in 2029. Between the two tracks, fewer kinds of income sit out of view.

One detail is still open. The Inland Revenue Department has said it will issue guidance and technical support for firms. The fine print on exactly how and what to file has not been published yet.

What to watch

Firms face their first real test in 2027, when collection begins. Watch whether smaller platforms and crypto ATM operators can meet the due-diligence rules, or whether some leave the Hong Kong market instead.

Enforcement is the harder question. A reporting rule bites only when the data is accurate and the agency on the receiving end acts on it, and cross-border exchange depends on each partner holding up its end. Hong Kong also needs enough partner jurisdictions signed up for the 2028 flows to matter. Early years of any exchange regime tend to go on fixing data quality rather than catching evaders.

Watch the licensing deadline too. Hong Kong's separate regime for crypto trading platforms runs on its own clock, and firms now face registration under both. Compliance cost is the quiet story here. It tends to favour large, well-funded exchanges over small ones.