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State tax filing
Federal and Illinois are separate. Prepare and file an IL-1040-X if you amended your federal return.
The IL-1040-X will show you the amount of state tax due. You can mail a payment or pay on the Illinois Department of Revenue website at Make a Payment.
- Keep going until you see the screen A few things before we wrap up your state taxes
- On Other forms, start Amend a tax return
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‎April 9, 2022
4:01 AM