General Billing

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.

Payment Options

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.

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 Monday through Friday from 8 a.m. to 4:30 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.