The interest calculation rules for Bank of Communications credit cards are based on the daily interest rate of 0.05, using daily interest calculation and monthly compound interest. When you spend 12,000 yuan on day Daily interest rate; secondly, if there is an unpaid remaining principal (12,000-1,200 yuan), this part will also be charged interest at a daily interest rate of 0.5% until the repayment date this month.

It should be noted that if you withdraw cash from a credit card or fail to repay in full within the repayment period, in addition to the interest on the consumption principal, additional overdraft interest will be charged. The calculation of interest starts from the consumption recording date (usually the next day of consumption) until partial repayment, and the remaining unpaid portion will continue to accumulate interest until the next repayment. Therefore, in order to avoid additional interest payments, credit card holders should try their best to repay their loans in full and on time, and avoid frequent use of the credit card cash withdrawal function. If you have difficulty in cash flow, you may consider choosing an installment repayment plan.

The above information comes from the relevant regulations of Bank of Communications credit cards.