Credit cards can be overdue for up to 60 days.

Details are as follows:

1. According to current regulations, the maximum overdue period for credit cards is 60 days. Even if this period is exceeded, the bank cannot take coercive measures.

2. Within the overdue period, the bank will send a reminder notice to the cardholder, requiring repayment as soon as possible.

3. If the cardholder fails to pay off the balance within the overdue period, the bank may calculate interest on the overdue amount and regard it as the cardholder's credit record.

4. If the overdue time is very long, the bank may transfer the overdue account to a collection agency for processing. Collection agencies will take appropriate measures to require cardholders to repay.

5. Overdue repayment will have a negative impact on the cardholder's credit record, which may lead to a decline in credit rating and affect future borrowing ability.

6. Cardholders are advised to abide by the credit card repayment deadline and try to avoid late repayment.

Summary: Credit cards can be overdue for up to 60 days, and banks cannot take compulsory measures beyond this period. However, late repayment will have a negative impact on the cardholder's credit record and may lead to a decline in credit rating. It is recommended to abide by the repayment deadline and avoid late repayment.

Extended information: The maximum overdue period is determined according to the relevant laws and regulations of China's banking industry. These regulations are designed to protect the rights and interests of credit card holders and maintain the stability of the financial market. Cardholders should pay off their debts within the specified repayment period to avoid bad credit records and possible economic losses.

The above is an answer based on relevant financial information.