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Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

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How long does it take to process an amended individual income tax return?

Processing time for an amended individual income tax return varies. The Department processes these returns in the order they are received. If you are unsure of the status of your return and would like to follow up with us, we recommend that you allow at least 6 months from the date you submitted your amended return before contacting us.

If you have additional inquiries, you may submit them on the Questions, Comments, or Requests form.