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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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I received a notice asking for additional information; can I fax it to you?

You must mail the information to the address shown on the notice, unless the notice specifically gives you the option to fax information to us.

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.