When selecting per installment on the General tab, the Total Due column displays the total amount due for the installment. Any write-offs or payments made to the installment are considered in the calculation of the Total Due. When selecting per pledge on the General tab, this column displays the total amount due for the pledge as of the date you print the reminders. This column is calculated by subtracting the Total Paid amount from the Planned Payment amount. Only gifts on which the Send reminders checkbox is marked are included.

Past Due Report:

The Past Due Report reports on past due pledges in the same way but includes all gifts that are past due based on the report criteria, not just those which have send mail marked on the gift record.