You want to know where to find the IL-8633 form so Avalara can file your Illinois return.
- Illinois requires Avalara customers to complete the IL-8633 form.
- Please complete document and send into your Implementation Consultant or
- Once the IL-8633 is received, then we can file your Illinois return
- Note - if a return is filed without the completion of this document, Illinois will assess a penalty fee to the customer
You may also find this document when completing the Illinois filing calendar in the Avatax user interface