Where to Mail your Illinois Tax Return . The Illinois Department of Revenue (IDOR) provides specific mailing addresses ...

The Illinois Department of Revenue's taxpayer assistance numbers are available for residents to call for tax-related inquiries without having to wait for an agent. The call center is expanding their ...

When will you receive your tax refund in Illinois this year? According to the Illinois Department of Revenue, the state is processing more tax returns now than it did at the same time last year.