Please review the online training materials first. If after reviewing the materials, you still have questions about registration, use of the iSupplier or online bidding, please call 312-744-HELP Monday-Friday, 8:30 am to 4:30 pm, excluding City holidays or email below:  

iSupplier Customer Support

Please note that while an Economic Disclosure Statement (EDS) certificate of filing is required to be submitted through iSupplier, Online EDS is a separate computer system.  Online EDS questions should be addressed to  Do not contact the iSupplier help desk about Online EDS.  

Payments and Invoices

For inquiries about payments and invoices, please contact the Department of Finance by clicking on the link below:

Invoice/Payment Questions

Login Assistance

Forgot user name / password

eProcurement Support  for Delegate Agencies:

iSupplier Customer Support


If you are a person with disabilities and require accommodations to utilize iSupplier, please contact eProcurement Support