Registered Form ST-556 and Form ST-556-LSE filers can submit their returns and make their payments for free using
MyTax Illinois, the Illinois Department of Revenue's online filing, payment, and account management system.
The Secretary of State works with service providers to allow vehicle dealers, remitters, financial institutions and currency exchanges to process license plate renewal stickers and registrations onsite using the Electronic Registration and Title program (ERT). Dealers and remitters can issue license plates, process various title transactions, and file and pay Forms ST-556 and ST-556-LSE.
Click here for more information about service providers.