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Taxpayer Answer Center

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About IDOR

About IDOR

Department Phone Numbers

Alcohol, Tobacco, & Fuel Division

217 785-2645

Board of Appeals

312 814-3004

Business Hot Line

217 524-4772

Central Registration Division

217 785-3707

Forms Order Line

800 356-6302

Freedom of Information Office

217 782-0985

Legal Services Office

217 782-7054

Legislative Office

217 785-5918

Problems Resolution Division

217 785-7313

Sales Tax (specific account inquiries only)

217 782-7897

Tax Fraud Hot Line

800 243-2811

Taxpayer Assistance Lines

800 732-8866
217 782-3336

TDD (Telecommunications Device for the Deaf)

800 544-5304
888 261-2718 (collection specific inquiries)