4520 yuan.
After checking the official account of ICBC, we learned that the one-year overdue interest of 2,000 yuan is 360 yuan. 360×7=2520, 2522000=4520. Therefore, if a credit card of 2,000 yuan is overdue for seven years, you will have to repay 4,520 yuan.
According to the latest provisions of the Civil Code on overdue repayment of credit cards, when a cardholder uses a credit card overdue, the late payment fees incurred will be converted into liquidated damages.