CSS Software Upgrade Complete; Portal Accessible
The CSS portal recently went through a software upgrade, which will require new procedures for customer use. Instructions on how to register and use the new CSS portal are provided below, as it a list of instruction guides along the side column.
The Naperville Finance Department is responsible for billing customers for services rendered by the City. Non-utility bills are referred to as general billing because they encompass a wide variety of services. General billing includes, but is not limited to, non-utility items such as fire alarm monitoring, police and fire services and claims for damage to City property.
General billing invoices are sent out by mail 30 days before payment is due. Bills are due and payable upon receipt. Any bill that remains unpaid after the billing date may be subject to a penalty.
Online: Customers can view and pay general billing invoices securely online by accessing their account via a Citizen Self-Service (CSS) portal. New users must create a new CSS account.
CSS Instruction Guides
The Finance Department created CSS Instruction Guides to help you use the portal.
- Register for CSS (PDF)
- Sign into CSS (PDF)
- Link General Billing Customer Number to CSS Account (PDF)
- View a General Bill in CSS (PDF)
- Pay a General Bill in CSS (PDF)
- View General Bill Customer Information (PDF)
- Reset CSS Password (PDF)
By Mail: Payments and correspondence may be mailed to: City of Naperville, Finance Department, 400 S. Eagle Street, Naperville, IL 60540
Please reference the account number on your check. The City will reference the postmark date as the payment date.
In person: Payments may be made by check, cash and credit card in person at the Finance Department during the following business hours:
- Monday, Tuesday, Thursday, Friday: 7:30 a.m. to 5 p.m.
- Wednesday: 10 a.m. to 2 p.m.
Check payments may also be dropped off 24/7 in the drop box in the lower level of the parking garage at 400 S. Eagle Street. Please reference the account number on your check.