Check it on your credit card statement, or call the customer service number on the back of your credit card. The minimum repayment amount for a credit card is usually 10% of the total repayment amount, but some purchases do not qualify for the minimum repayment, so the exact amount should be based on the bill. In addition, if you use the minimum repayment, you will not be able to enjoy the interest-free period, and there will be handling fees, which is not cost-effective.