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Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

FY 2025-03, Relief for Filers of Form ST-556 and ST-556-LSE on Computerized Vehicle Registration Outage

News – Thursday, July 18, 2024

The Illinois Department of Revenue (IDOR) is granting relief for taxpayers impacted by the outage of CDK Global’s Computerized Vehicle Registration (CVR) system for filing Forms ST-556, Sales Tax Transaction Return, and ST-556-LSE, Transaction Return for Leases.

See FY 2025-03, Relief for Filers of Form ST-556 and ST-556-LSE on Computerized Vehicle Registration Outage for more information.