You can also buy and sell funds when your ID card expires. Generally, it can be bought and sold normally within three months after expiration, and it is best to update it in time after expiration.

According to the relevant provisions of the Resident Identity Card Law of the People's Republic of China, the Anti-Money Laundering Law of People's Republic of China (PRC) and the Measures for the Administration of Customer Identification and Customer Identity Information and Transaction Records of Financial Institutions:

During the business relationship with customers, financial institutions should take continuous customer identification measures, pay attention to customers and their daily business activities and financial transactions, and prompt customers to update information in time. If the identity certificate or identity certificate previously submitted by the customer has expired, and the customer fails to update it within a reasonable period of time without giving a reasonable reason, the financial institution shall stop handling business for the customer.