City of Chicago :: English
Vehicle Registration Site Metropolitan Pier and Exposition Authority (MPEA)/Ground Transportation Tax (GTT) and Transportation Network Providers (TNP)
You must have a City of Chicago Department of Finance account number to obtain an MPEA/GTT EMBLEM and/or to register for the Ground Transportation Tax.
Businesses needing a current City of Chicago IRIS (Integrated Revenue Information System) account number should contact the City of Chicago’s Department of Finance by sending an e-mail to with the subject line: IRIS-Need Account Number.
If you have lost or forgotten your PIN, contact the Customer Service Center at 312-747-IRIS (312-747-4747).
A false statement of material fact made on this form may violate federal, state and/or local law, and may subject any person making such statement to a range of civil and criminal penalties, such as a period of incarceration, fines and an award to the City of Chicago of up to three times any damages incurred. In addition, persons who submit false information are subject to denial of the requested city action.

I have an IRIS number.
I don't have an IRIS number.

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