IL SB3167

Changes the annual reporting deadline for data center tax benefit reports from May 31 to June 15 of each year, effective immediately.

Requires qualifying Illinois data centers to report to the Department of Commerce and Economic Opportunity the total tax benefits received, with the first report covering 2019 calendar year due by May 31, 2020, and subsequent reports due by the new June 15 deadline.

Maintains existing provisions for data center exemption certificates covering retailers' occupation taxes, use taxes, service taxes, and income tax credits for facilities meeting capital investment and job creation requirements.

Requires data center facilities to achieve carbon neutrality or green building certification within 2 years of being placed in service to qualify for exemptions.

Sunsets the issuance of new data center exemption certificates after July 1, 2029, though existing certificates remain valid.