The balance of the credit card refers to the arrears. The landlord handled the card very well and swiped it several times. Of course there will be balance! A positive balance means that the amount owed to the bank after use needs to be returned; The balance is negative, indicating that there is extra money on the card. Credit card is an overdraft account, so the expression is the other way around.

For example, the credit line is 5000 yuan, and the credit card consumption is 1000 yuan. The balance after posting is 1000, and the available line is 4,000 yuan.

Repay after 5 days 1000 yuan, the card has not been used again, the balance is 0, and the available line is 5,000 yuan.

On the other hand, after 5 days, I paid back 1200 yuan, and after that, I didn't use the card. The balance was -200, and the available line was 6,200 yuan.