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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.

Approved Third Party Software Vendors for Withholding Income Tax (WIT)

If you choose to have a third party file your return, the following are vendors who are approved by the department to electronically file withholding tax returns through the FSET program:

eSmartPayroll - eSmartPayroll www.esmartpayroll.com

Intuit - QuickBooks Payroll www.payroll.com/enhanced

Paychex - www.paychex.com

PrimePay LLC - www.primepay.com.com

Quarterly Express Plus Software - developed by Lewis Software Associates, LLC www.qexplus.com

SPAN Enterprises www.TaxBandits.com

Thomson Reuters - UltraTax CS - https://tax.thomsonreuters.com/us/en/cs-professional-suite#payroll

For questions regarding this program, please contact the Electronic Commerce Division at 1 866 440-8680.

Note : Some taxpayers are required to pay their tax electronically using Electronic Funds Transfer.