Enclosure No. 6 - Tax Exemption Certificate.pdf
PDF 338 KB Posted
- Attached to
- Request for Proposal: ALCF Equinox AI System Federal contract opportunity
- Solicitation number
- 6-B143-P-00251-00
- Issued by
- Department of Energy Office of Science
About this file
This document is a Taxpayer Notification letter from the Illinois Department of Revenue confirming the issuance of a Sales Tax Exemption Certificate to UChicago Argonne LLC for Argonne National Laboratory. The certificate, identified as E99362058, was issued on February 9, 2026, and is valid through March 1, 2031. The organization is classified as Educational and is authorized under the Retailers' Occupation Tax Act to purchase tangible personal property for use or consumption tax-free in Illinois.
The registered address for the certificate is 5801 S Ellis Avenue, Chicago, IL 60637-5418, though the notification was sent to the Argonne National Laboratory location at 9700 S Cass Avenue, Building 201, Lemont, IL 60439-4801. The letter instructs the organization to verify the accuracy of all information and retain the certificate as an important tax document. Questions or corrections should be directed to the Illinois Department of Revenue's Exemption Section 3-520 at 217-782-8881 or REV.E99@illinois.gov during business hours of 8:00 a.m. to 4:30 p.m. on weekdays.
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Text version
Taxpayer Notification Sales Tax Exemption tax.illinois.gov
UCHICAGO ARGONNE LLC
ATTN: ARGONNE NATIONAL LABORATORY
9700 S CASS AVE BLDG 201
LEMONT IL 60439-4801
February 10, 2026
Letter ID: L0321989352 E99 No.: E99362058
We have enclosed your Illinois Sales Tax Exemption Certificate Welcome!
We have enclosed your Illinois Sales Tax Exemption Certificate. Verify that all of the information is correct. If any corrections are needed you must contact us immediately at the telephone number listed below.
Do not discard. Your Illinois Sales Tax Exemption Certificate is an important tax document that authorizes you under the Retailers’ Occupation Tax Act to purchase tangible personal property for use or consumption tax-free.
If you wish to be registered for any other taxes or fees, you must complete a new application. For additional information or questions, visit our website at tax.illinois.gov or call us weekdays between 8:00 a.m. and 4:30 p.m. at the telephone number below
EXEMPTION SECTION 3-520
ILLINOIS DEPARTMENT OF REVENUE
101 WEST JEFFERSON STREET
SPRINGFIELD IL 62702
217 782-8881 REV.E99@illinois.gov
Enclosure(s)
STAX-70 (R-05/16)
P-000023
01/02
Verify that all of your Illinois Sales Tax Exemption Certificate information is correct
If not, contact us immediately.
Do not discard - your Illinois Sales Tax Exemption Certificate is an important tax document that authorizes you to purchase tangible personal property for use or consumption tax-free.
UCHICAGO ARGONNE LLC
5801 S ELLIS AVE
CHICAGO IL 60637-5418
Issue date: Sales Tax Exemption E99362058 02/09/2026 Expiration date: Organization type:
03/01/2031
This entity is authorized under the Retailers’ Occupation Tax Act to purchase tangible personal property for use or consumption tax-free.
Educational
STAX-70 (R-05/16)
P-000024
02/02
File details come from the government source that posted it. Updated .