According to the Bank of Communications credit card regulations, you owe a late payment fee of 400 yuan, and the default period is 2 years. The specific amount of late payment fees depends on the interest rate and penalty interest calculation method agreed in the credit card contract.

Details:

1. Interest rate: The overdue interest rate is usually stipulated in the credit card contract, which is generally higher and much higher than the normal consumption interest rate.

2. Penalty interest calculation method: Late payment fees are generally calculated based on the amount of arrears and the period of arrears, which can be calculated on a daily, monthly or annual basis.

3. Calculation example: Assume that the credit card contract stipulates that the overdue interest rate is 0.05 per day, that is, 0.05 of the daily amount owed is used as a late fee. In this case, if the debt of 400 yuan lasts for 2 years, the late payment fee is: 400 yuan × 0.05 × 365 days × 2 years = 146 yuan.

Summary:

According to the above explanation, you owe a late payment fee of 400 yuan and have been in arrears for 2 years. The final late payment fee you need to pay may be 146 yuan. However, please note that the specific late payment fee amount needs to refer to the relevant provisions in the credit card contract, so it is recommended to check the credit card contract or contact Bank of Communications to obtain the accurate late payment fee amount.

Extended information:

In addition to late fees, late repayment may also trigger other fees and impacts. For example, late repayments may cause damage to your credit history, affect your personal credit score, and may make it more difficult to apply for a loan, credit card, etc. Therefore, it is recommended to pay off your credit card debt promptly to avoid late payment fees and bad credit history.

Note: