Illinois Department of Revenue System Maintenance

The Illinois Department of Revenue MyTax system will be shut down for maintenance on December 12, 2024.  Any pending transactions in MyTax for vehicles sold on and after November 22, 2024 must be completed before 12:01 AM on December 12 for the transaction to qualify for the retailers’ collection allowance.  CVR will not be affected by the MyTax outage.

Below is the Department of Revenue message regarding the MyTax outage.

To allow for maintenance to the system, beginning December 12, 2024, MyTax Illinois will stop accepting new or saved Sales Tax Transaction Returns (Form ST-556-LSE) and Transaction Returns for Leases (Form ST-556-LSE). After December 12th, you will not be able to submit any returns that were saved but not submitted. Full functionality in MyTax Illinois is scheduled to resume the morning of December 16th.

It is *very* important that if dealers have sold a vehicle with a date of delivery on or after Friday, 11/22/2024 and want to claim the discount, the ST-556 must be filed prior to the system outage at 12:00:01 am on Thursday, December 12, 2024.