The system will advance the next payment due date depending on the payments made during the “payment period” window, which runs from "due date" to "due date" (which is not always calendar month). Once the next payment period begins, any payments made will count towards the payment amount due until it is fully satisfied, at which point the due date will advance to the next payment period. Payments may still be made during the current payment period; however, any overpayments will be considered principal pay-downs and will not be counted towards the next payment period.

For example: a member has a regular monthly payment amount of $500, due on the 5th of each month. On March 2, the member makes a $1,000 payment. Since only one payment can be satisfied per period (in this case, the month running from February 6 through March 5), the system treats this as one payment and advances the next payment due date to April 5. The member can still make payments between March 2-5, but these payments will not count towards the amount due on April 5^th. The amount due can be satisfied only by payments made within that payment period.

This process works for both Line of Credit Loans and Closed End Loans that have the single payment per period flag configured in the loan category (value = P).