HSBC requires some existing investment clients on the Chinese mainland to submit declarations of fund sources; failure to do so in a timely manner may lead to termination of relevant services.

According to National Business Daily, after requiring new account applicants to confirm their funds come from legal overseas sources, some Hong Kong banks have begun initiating fund source declaration procedures for existing mainland Chinese investment clients. Reporters learned that HSBC Hong Kong has recently sent notices to some of its existing mainland Chinese investment clients, requiring them to submit the "Account Opening/Maintenance Declaration" via the HSBC Hong Kong App by September 12 and update their contact information. The declaration requires confirmation that investment funds originate from legal sources outside mainland China, and that the bank may disclose personal information upon request from law enforcement or regulatory authorities. The notice also states that failure to submit the declaration by August 20 may lead to suspension of investment-related services, while non-submission by September 12 may result in termination of such services. In an exclusive response to National Business Daily on August 18, an HSBC spokesperson said: "When managing investment client relationships, we adhere to relevant regulatory requirements. We are therefore inviting relevant mainland Chinese investors to provide self-declarations and confirm that the information they submitted under 'Know Your Customer' and 'Customer Due Diligence' is up-to-date and valid. This move helps us continue to deliver uninterrupted services to our clients." HSBC emphasized that the latest declaration requirement only applies to investment service clients.