Five years.

1. Bank statements often look back on the past five years, but in different ways. Users can go to the counter of a bank branch to check bank records for the last one to two years for free, or they can check bank records for the last six months or so at a bank terminal or online banking. When checking bank card traffic through online banking, generally only records within 2 or 5 years can be queried (subject to the specific regulations of the issuing bank). For example, China Construction Bank can use mobile banking to query savings account or credit card account details in the past 2 years, as well as current account transaction details in the past 5 years. If you want to check the traffic for more than five years, you often need to bring your personal ID card and account opening card to check in person. The records will generally not be deleted. Customers can go to the counter and inform the staff of their specific time period to view the details.

2. Generally speaking, the usable time of flow records is within 5 years. Currently, the state requires banks to keep transaction records for at least 5 years. Banks may not keep records for longer than five years. To check the flow of the whole year, you can check it yourself through online banking or self-service inquiry equipment at the branch; to check the flow of more than one year, you need to bring your ID card and bank to the counter of the branch; bank statements refer to bank card transaction details, generally each All major commercial banks can query records that are more than five years old. For example, the Agricultural Bank of China stipulates that transaction details from January 1, 2010 to the present can be query. If users need to inquire about bank statements, they can bring their bank cards and ID cards to the issuing bank branch and inquire at self-service teller machines or counters

3. The details of the time when the bank can inquire are as follows:

① The detailed information of the past two years can be checked through online banking;

② The details of the past two years can be checked at the bank counter within one year;

③ The details of the past two years can be checked through the self-service machines of bank branches.