Illinois Department Of Revenue Phone Numbers and Emails

Toll-Free Number:

  • (800) 732-8866
Send Message

Customer Service:

  • (800) 544-5304
  • (217) 782-3336

Business Hot Line:

  • (217) 524-4772

Forms Hotline:

  • (800) 356-6302


  • (847) 294-4200
    Des Plaines, Illinois
  • (618) 624-6773
    Fairview Heights, Illinois
  • (618) 993-7650
    Marion, Illinois
  • (815) 987-5210
    Rockford, Illinois

Illinois Department Of Revenue Emails:

Accounting/ Billing
​Local Tax Allocation Division, MyTaxIllinois Help, Sales Tax Exemptions
Business Customer Service
Customer Service
MyDec (Online Real Property Transfer Tax) Help
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Illinois Department Of Revenue Customer Service Overview

The aggregated data is based on calls made from website and questionnaires provided by users.

  • More commonly used way of contact is by phone.

    Source Distribution
    83% phone 17% email
  • The best phone number to call Illinois Department Of Revenue is 8007328866. 60% of consumers used this number to address their issues and concerns.

  • The longest wait times are on Thursday, while the shortest are on Wednesday and Tuesday. The average call time is 18 minutes.

  • The main reason people call Illinois Department Of Revenue is for refund.

View full overview ›
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Contact Information

Illinois Department Of Revenue Website:

Illinois Department Of Revenue Help Center:

Corporate Office Address:

Illinois Department Of Revenue
01 W Jefferson St.
Springfield, Illinois 62702
United States

Summary of Illinois Department Of Revenue Customer Service Calls

17:32 AVG CALL

Top Reasons of Customers Calls

Consumers Call the Most From

Why Do People Call Illinois Department Of Revenue?

Payments and Charges Question:

  • “Tax rebate”

Refund Question:

  • “Refund”

Other Question:

  • “St556 form”
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