Commercial customers may contact the Commercial Accounts Receivable Office to obtain a copy of the invoice, or to obtain general information about the charges. Our staff can refer you to the appropriate sales department if detailed information about the charges is needed. If you already have an invoice, the NIU department's name and telephone number are listed under the customer mailing address.
Payment is to be made within 30 days of the date of the invoice. Any overpayment will be applied to the oldest outstanding invoice.
- Check payments should be made payable to Northern Illinois University and should be mailed to:
Commercial Accounts Receivable
Northern Illinois University
1425 W. Lincoln Hwy.
DeKalb, IL 60115-2828
- Credit/Debit Card or E-Check (online only):
VISA is a non-participating provider for Illinois E-Pay
A convenience fee will be charged for this service.
Returned Payments: Payments returned by your financial institution for any reason are subject to a service charge of $25.00.
In the event that a customer account reaches 90 days old, the customer account will be placed on a Hot List that is distributed campus wide. The list prevents customers from incurring further charges on their account for goods or services.