If you have not already done so, you will need to. Web form st‐556‐lse can be filed electronically by using mytax illinois, available on our website at tax.Read more
Form ST-556 can now be filed electronically using MyTax Illinois, our new FREE online account management program. If you have not already done so, you willRead more
Cookie consent notice
This site uses cookies to enhance site navigation and personalize your experience.
By using this site you agree to our use of cookies as described in our Privacy Notice.
You can modify your selections by visiting our Cookie and Advertising Notice.