China opens a retroactive hunt for offshore income and taxes trusts at 20%

China has launched a retroactive campaign to collect tax on overseas income going back years, alongside tighter controls on future offshore capital flows, the Financial Times reported, attributing the push to fiscal pressure.

The rules are specific. The Ministry of Finance and the State Taxation Administration issued guidance applying a 20% personal income tax to offshore trusts at the establishment, operating and liquidation stages, Caixin Global reported. Chinese tax residents must report and pay tax on previously undeclared income by October 22, 2026, to avoid late-payment surcharges. Wealthy families are seeking advice urgently, CNBC reported, describing the guidance as a surprise.

Enforcement rests on data the authorities already hold. China has participated since 2018 in the Common Reporting Standard, the international system through which banks exchange account information across borders, giving Beijing visibility into holdings in Hong Kong, Singapore, Australia, Canada, Europe and established offshore centres. The campaign targets anyone domiciled in China or resident there for 183 days or more in a year, focusing on offshore investment income, capital gains, rents and royalties.

A government that begins collecting decades-old claims on capital held abroad is revealing the state of its finances. Land sales, once the main source of local government funding, no longer deliver what they did, and the search has turned to the stock of private wealth rather than the flow of new activity. The second-order effect is behavioural and predictable. Owners of mobile capital respond to retroactive assessment by moving assets or residency before the next rule change, which is why the tightening of future outbound flows arrived at the same time as the backward-looking demand.