Illinois Department of Revenue
Taxpayer Correspondence Section
Post Office Box 4565
Springfield, Illinois 62708
Alternatively, upon notice from the Department, the employer must make withholding exemption certificates received from one or more named employees, from one or more reasonably segregable units of the employer, or from employees who have furnished withholding exemption certificates under certain specified criteria available for inspection by a Department employee (e.g., a compliance check).
Ill. Admin. Code tit. 86, § 100.7110
Amended at 31 Ill. Reg. 16240, effective November 26, 2007