Instructions for Form ST-1-X, 003 Amended Sales and Use Tax and E911 Surcharge Return - Illinois

Form ST-1-X Amended Sales and Use Tax and E911 Surcharge Return - Illinois

This document contains official instructions for Form ST-1-X , and Form 003 . Both forms are released and collected by the Illinois Department of Revenue. An up-to-date fillable Form ST-1-X is available for download through this link.

FAQ

Q: What is Form ST-1-X?
A: Form ST-1-X is the Amended Sales and Use Tax and E911 Surcharge Return in Illinois.

Q: What is the purpose of Form ST-1-X?
A: The purpose of Form ST-1-X is to report changes or corrections to a previously filed sales and use tax and E911 surcharge return.

Q: When should I use Form ST-1-X?
A: You should use Form ST-1-X when you need to amend a previously filed sales and use tax and E911 surcharge return.

Q: What information do I need to complete Form ST-1-X?
A: You will need to provide your taxpayer identification number, the period you are amending, and the changes or corrections you are making to the original return.

Q: Are there any penalties for filing an amended return?
A: Penalties may apply if you file an amended return after the due date or if the changes result in additional tax liability.

Q: Is there a deadline for filing Form ST-1-X?
A: Form ST-1-X should be filed within three years from the original due date of the return you are amending.

Q: Do I need to attach supporting documentation to Form ST-1-X?
A: You may need to attach supporting documentation, such as corrected worksheets or schedules, depending on the changes or corrections you are making.

Q: Who should I contact if I have questions about Form ST-1-X?
A: If you have questions about Form ST-1-X, you can contact the Illinois Department of Revenue for assistance.