If you checked the "use credit card minimum payments" box, your monthly payment is calculated as 4% of your current outstanding balance. With the "use credit card minimum payments" box checked, your monthly payment will decrease as your balance is paid down. This can greatly increase the length of time it takes to pay off your credit cards. Uncheck this box to enter your own monthly payment that will remain the same until your balance is paid in full.
(We calculate your minimum monthly payment as 4% of your current outstanding balance. While your actual minimum monthly payment may be slightly different, this is one of the most common methods used by credit card companies to calculate minimum payments.)