Can a retailer authorize the release of confidential information?

Yes. In order to do so, the retailer and local government must complete Form PTAX 1002-21, Authorization to Release Sales Tax Information to Local Governments. The completed form must be sent to the following address:

LOCAL TAX ALLOCATION DIVISION (3-500)
ILLINOIS DEPARTMENT OF REVENUE
101 WEST JEFFERSON ST
SPRINGFIELD IL 62702-5145

Or to:

rev.localtax@illinois.gov

If you have additional inquiries, you may submit them to the Questions, Comments, or Request form.