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Frequently Asked Questions
Maintenance Notice
The Department of Revenue is performing emergency maintenance on the Cook County Taxpayer Portal. The Portal will be unavailable on September 26th, from 12:00PM to approximately 2:00PM. Thank you for your patience while we perform important updates to the Portal.
Home Rule Tax Update
Welcome to the Online Taxpayer portal!
***UPDATES TO PAYMENT PROCESSING FOR ACH (E-CHECK) PAYMENTS ONLY***
Effective July 1st, 2024, Cook County Department of Revenue switched to a new ACH payment provider. If your financial institution requires a Company ID to avoid a debit block when paying by ACH, please provide them with the new Company ID, 0000408976.
You will be required to reenter your bank's routing and account number for accounts previously stored on the portal.
We apologize for the inconvenience and thank you for your patience.
Online Taxpayer Portal
