What is the cut-off day?

The cut-off day is used by proximo terms to indicate the day of the month on or after which the due date will advance to the next month. For example, if the cut-off day = 10, any invoices dated on or after the 10th will automatically be due the following month.

Hint: Put "0" as the cut-off day to indicate the first day of the next month. For example, if the cut-off day = 0 and the due days = 15, then the due date will be on the 15th of the next month.