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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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What is the best way for me to respond to a notice I received?

Mail us a copy of the notice plus any information we requested to the address shown on the notice.

For more information about individual income tax notices, see letters and notices.

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