China is launching a broad tax enforcement effort that reaches back decades, according to reports from Financial Times and Financial Post. The campaign is described as being driven by fiscal pressure, and it focuses on offshore capital and related tax treatment over a long historical period.

The reports say the initiative involves a retroactive component, implying that authorities are examining prior cross-border holdings and transactions for potential tax underpayment or non-compliance. In addition to retrospective scrutiny, China is also tightening controls on future offshore capital flows, aiming to reduce the risk of assets and income moving abroad without proper declaration.

While the two outlets emphasize the same core elements—retroactive action, a global reach, and stricter offshore controls—neither report, in the provided summaries, specifies detailed scope such as the number of cases, the countries most affected, or the specific mechanisms used for information gathering. Overall, the coverage indicates an expanded state effort to widen the tax net around offshore wealth and improve compliance going forward.