3000. The calculation method of our bank is to calculate the consumption amount and fees in the bill as 10. That is the formula for calculating the minimum payment amount. The minimum repayment on a credit card is 10 of the amount due. That is to say, if you owe 30,000 yuan, 30,000 times 10 equals 3,000, so you only need to pay back 3,000 yuan using the minimum repayment.