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How do I file Forms ST-556 and ST-556-LSE?

Effective January 1, 2023, retailers whose annual gross receipts average $20,000 or more must file Forms ST-556 and ST-556-LSE electronically. 35 ILCS 120/3; 35 ILCS 105/9. Retailers whose annual gross receipts do not average $20,000 or more may also file electronically.

Retailers can file electronically through MyTax Illinois, which is the Illinois Department of Revenue’s online filing, payment, and account management system that retailers can use to file returns and make payments. There is no fee to register for a MyTax Illinois account.

Retailers can also file Forms ST-556 and ST-556-LSE electronically using an approved service provider in the Electronic Registration and Title (ERT) program.

For information about Form ST-556 and Form ST-556-LSE, see:

If you have additional inquiries, you may submit them on the Questions, Comments, or Requests form.