Whether there will be any impact if your credit card is overdue for one day depends on whether the card issuer provides time tolerance services. If the bank does not provide time tolerance services, as long as one day is overdue, the overdue record will be uploaded to the People's Bank of China for credit reporting, which will affect the user's personal credit. If the bank provides time tolerance service, the money will generally be paid off within 2 to 3 days after the repayment date, and the bank will count it as normal repayment without any impact on the user.