Who should file the Home Rule Tax Registration Application?

Businesses that need to register for Cook County home rule taxes should complete the application, identify the applicable taxes, and provide business and responsible-owner information.

What should I attach to the application?

If the business was acquired by purchase or transfer, attach a copy of the purchase, sale, or transfer agreement. The instructions also specify a copy of applicable Illinois distributor licenses or a Secretary of State Certificate of Authority for certain registrations.

Do I need a notary for the Home Rule Tax Registration Application?

No. This application is signed and dated without a notary. If the business was acquired by purchase or transfer, attach the agreement copy; the form does not say it must be notarized.

How do I submit the Home Rule Tax Registration Application?

Mail it to the Cook County Department of Revenue at 118 N. Clark Street, Room 1160, Chicago, IL 60602, or email it to taxregistration@cookcountyil.gov.

Cook County, IL · Cook County

No notary required

Home Rule Tax Registration Application

Cook County businesses use this application to register for applicable county home rule taxes and provide business, tax, and responsible-owner information.

At a glance

Issued by: City of Cook County · Cook County, Cook County, Illinois
Notarization: Not required: file this form without a notary.
Official source: cookcountyil.gov
Blank form: Download the PDF
Catalogued: Oct 5, 2026
Machine-readable: JSON record · about the forms index

What this form is

Businesses use this application to register with the Cook County Department of Revenue for home rule taxes that apply to their activities. It asks whether the business is already registered, which taxes it needs to register for, its business and contact details, legal structure, and responsible owners or officers. The instructions require a purchase, sale, or transfer agreement copy if the business was acquired that way.

Who needs it

A business operating in Cook County that needs to register for one or more home rule taxes should complete and submit this application.

How to submit it

Mail the application to Cook County Department of Revenue, 118 N. Clark Street, Room 1160, Chicago, IL 60602, or email it to [email protected].

About notarization

This application is signed and dated without a notary; the signer just signs and dates it, and the form does not say its required attachments must be notarized.

How to submit this form

1
Download the Application
Download the Home Rule Tax Registration Application and read the instructions on the second page before completing it.
2
Complete the Application
Provide registration and tax selections, business details, legal structure, applicable license information, and responsible owner or officer details.
3
Gather Required Attachments
If the business was acquired by purchase or transfer, include a copy of the purchase, sale, or transfer agreement.
4
Submit to the County
Mail the application to the Department of Revenue at the address on the form or email it to [email protected].

Frequently asked questions

Who should file the Home Rule Tax Registration Application?: Businesses that need to register for Cook County home rule taxes should complete the application, identify the applicable taxes, and provide business and responsible-owner information.
What should I attach to the application?: If the business was acquired by purchase or transfer, attach a copy of the purchase, sale, or transfer agreement. The instructions also specify a copy of applicable Illinois distributor licenses or a Secretary of State Certificate of Authority for certain registrations.
Do I need a notary for the Home Rule Tax Registration Application?: No. This application is signed and dated without a notary. If the business was acquired by purchase or transfer, attach the agreement copy; the form does not say it must be notarized.
How do I submit the Home Rule Tax Registration Application?: Mail it to the Cook County Department of Revenue at 118 N. Clark Street, Room 1160, Chicago, IL 60602, or email it to [email protected].

Need something notarized?

This Home Rule Tax Registration Application doesn’t need a notary, but Illinois residents can notarize other documents online with a commissioned online notary.