Interest and late payment interest

The interest rates in Opter are annual rates.

Late payment interest is the interest charged on an invoice that the customer does not pay on time. Late payment interest is calculated as follows in Opter:

The number of days is calculated from the due date of the original invoice until either the date on which the invoice was paid or the date specified when interest is calculated.

The annual interest rate is set in Opter and is indicated on the original invoice.