You will not need to find this form. If you filed with our software, this form (IL-8453) will not be needed for your Illinois return.
Form IL-8453 is for electronic return originators' (EROs) use only. Taxpayers who file Form IL-1040, Illinois Individual Income Tax Return, using the Tax-Prep Software method must not use Form IL-8453.
The Illinois Department of Revenue (IDOR) will request selected IL-8453 forms for inspection. Do not send any IL-8453 forms unless requested.
