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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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Quarterly Filing Requirements

Employers must file wage reports (Form UI-3/40​) and pay contributions in the month after the close of each calendar quarter - that is, on or before April 30, July 31, October 31, and January 31. 

It is an employer’s responsibility to file the proper forms on time either electronically or via obtaining paper forms on this site. Governmental organizations and some non-profits are also required to file wage reports, although they may have an option to reimburse IDES for benefits paid rather than making quarterly contributions.

If filing via printed forms obtained from this website, mail the completed forms and payments to:

IDES P.O. Box 19300

Springfield, Illinois  62794-9300

Visit the Contact IDES page for more information or call the Employer Services Hotline at 800-247-4984. The Tax Hotline TTY number is 866-212-8831.