Update: sanctions due diligence for a deal touching Mainland China

Banking access on cross-border deals touching Mainland China is tightening. Compliance officers and general counsel across the Hong Kong corridor are reporting increased friction at the payment and account-opening stage. The trigger is familiar: correspondent banks and custodians are applying enhanced scrutiny to any transaction where a Mainland-connected counterparty, shareholder, or underlying asset sits inside the structure. The result is deal delay, account restrictions, and, in some cases, a refusal to process.

Sanctions due diligence for a deal touching Mainland China requires a structured compliance file aligned with the Anti-Money Laundering and Counter-Terrorist Financing Ordinance (Hong Kong's primary AML and counter-financing-of-terrorism statute) and, where the transaction currency or settlement bank is outside Hong Kong, with the sanctions posture of the relevant clearing jurisdiction. Hong Kong implements United Nations sanctions; it does not give domestic effect to unilateral measures of other states. That asymmetry is the source of most compliance friction on the corridor.

This briefing covers what is driving the current heightened scrutiny, who is affected across the Hong Kong – Mainland China corridor, and the immediate steps a deal team should take.

What has changed and why it matters now

The structural tension is not new, but its operational impact has intensified. Correspondent banks operating in USD and EUR clearing are applying their own unilateral-sanctions screening to transactions that pass through their systems. Hong Kong-domiciled deal parties – including special purpose vehicles (holding entities incorporated in the BVI or Cayman Islands above a Hong Kong or Mainland opco) – are not automatically shielded from that screening simply because Hong Kong law does not adopt those measures.

In our cross-border practice, we see this pattern consistently: a deal is structured cleanly under Hong Kong and BVI law, the sanctions position under UN-implemented measures is clear, yet a correspondent bank outside Hong Kong flags a Mainland-connected shareholder or beneficial owner and requests a full compliance file before processing. Without that file, payment stalls.

The practical consequence is that sanctions due diligence must now be treated as a pre-closing deliverable, not a post-signing housekeeping item. Deals that do not front-load the compliance work face a specific, and avoidable, execution risk.

Who is affected across the corridor

Any transaction with one or more of the following features should expect enhanced scrutiny from banking counterparties:

• A Mainland Chinese beneficial owner, ultimate holding entity, or key management person anywhere in the structure, even where the contracting entities are Hong Kong or BVI-registered;
• A target with significant revenues, assets, or operational presence in Mainland China, regardless of where the holding entity is incorporated;
• A payment leg routed through a USD or EUR correspondent system, including where the Hong Kong dollar settlement itself clears through a US or European correspondent;
• A co-investor, co-borrower, or syndicate member who is subject to their own home-jurisdiction unilateral-sanctions rules and requires clean-screen confirmation from all transaction parties.

The affected parties include the deal principals, their Hong Kong holding vehicles, offshore special purpose vehicles (BVI or Cayman entities used as acquisition or holding structures), and any financing party whose credit agreement contains a sanctions representation.

International counsel on our desk regularly advise on the cross-border compliance file at precisely this interface – where Hong Kong's UN-sanctions posture meets the correspondent bank's own screening requirements.

What to do now

The immediate action is to prepare a layered compliance file before the deal reaches the payment or account-opening stage. That file should address three distinct questions.

First, does any party to the transaction, or any beneficial owner at the relevant threshold, appear on a UN-designated list or on any list that the transacting bank is contractually or regulatorily required to screen? The UN-sanctions position governs in Hong Kong; the correspondent bank's screen may be wider. Both require a clear answer.

Second, what is the source of funds for the acquisition consideration or investment amount? For a deal with Mainland-connected principals, the AML file must trace the funds from the point of origin with supporting documentation. An incomplete source-of-funds file is the single most common reason a Hong Kong correspondent bank delays or declines a payment instruction on a cross-border deal. For further detail on responding to bank requests, see our briefing at responding to a bank's source-of-funds request.

Third, does the corporate structure itself – particularly any BVI or Cayman holding entity – satisfy the enhanced due diligence requirements that the correspondent bank or custodian will apply? For guidance on the BVI-counterparty compliance file, see our note at AML source-of-funds file for a BVI counterparty.

The compliance file should be prepared in parallel with legal due diligence. Waiting until signing creates a closing risk that is entirely preventable. Our Sanctions & AML practice advises on the structuring and documentation of the compliance position across the Hong Kong – Mainland China corridor.

For a structured assessment of the sanctions and AML compliance position on your deal touching Mainland China, write to us at info@lockhartyip.com.

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Related

• Sanctions Aml
• Responding Bank S Source Funds Request Briefing
• Aml Source Funds File Bvi Counterparty Bvi Briefing

This publication is general information and does not constitute legal advice. For advice on your situation, contact info@lockhartyip.com.