Illinois Department of Revenue
Illinois Department of Revenue's Overview
The Illinois Department of Revenue (IDOR) is the state agency responsible for administering and enforcing Illinois tax laws. Its primary functions include collecting state taxes, processing tax returns, issuing tax refunds, and providing taxpayer assistance and education. IDOR aims to ensure fair and efficient tax administration for the citizens and businesses of Illinois, supporting essential state services through revenue collection.
Where is Illinois Department of Revenue's Headquarters?
HQ Function
Serves as the central administrative hub for tax collection, policy implementation, taxpayer services, and enforcement operations for the State of Illinois.
Notable Features:
The Willard Ice Building is a large, modern state office complex. It was designed to centralize revenue operations and is known for its distinctive architecture from its construction period, featuring extensive use of glass and precast concrete panels.
Work Culture:
As a state government agency, the work culture emphasizes public service, adherence to regulations, accuracy, ethical conduct, and a structured environment. There's a strong focus on serving Illinois taxpayers and ensuring compliance with state tax laws.
HQ Significance:
The headquarters is crucial for the fiscal operations of Illinois, managing the state's primary revenue streams which fund essential public services like education, infrastructure, healthcare, and public safety.
Values Reflected in HQ: The headquarters reflects values of accountability, efficiency, public trust, and service to the citizens of Illinois through its role in managing state revenue and its design as a central, accessible point for tax administration.
Location:
As a state-level government agency, the Illinois Department of Revenue's operations are primarily focused within the state of Illinois and the United States. It does not maintain a global presence with international offices. However, IDOR does interact with individuals, businesses, or entities residing or operating internationally if they have Illinois tax obligations, such as income sourced from Illinois, property ownership, or past residency.
Street Address:
101 West Jefferson Street
City:
Springfield
State/Province:
Illinois
Country:
USA
Illinois Department of Revenue's Global Presence
Chicago, Illinois/USA
Address: 555 West Monroe Street, Concourse Level, Chicago, IL 60661
To offer accessible services to the large population and diverse business community in Northern Illinois, facilitating tax compliance and addressing taxpayer inquiries in the state's largest city and surrounding suburbs.
Des Plaines, Illinois/USA
Address: Maine North Regional Building, 9511 Harrison Street, Des Plaines, IL 60016
To extend the Department's reach and services to taxpayers in the densely populated suburban regions north and northwest of Chicago, ensuring local access to IDOR resources and support.
Fairview Heights, Illinois/USA
Address: 15 Executive Drive, Suite 2, Fairview Heights, IL 62208
To ensure comprehensive state tax administration and support for the southern region of Illinois, addressing the specific economic and taxpayer needs of this area and providing a local point of contact for IDOR services.
Rockford, Illinois/USA
Address: 200 South Wyman Street, Rockford, IL 61101
To serve the taxpayers and businesses in the northwestern region of the state, offering local assistance for tax filing, payments, and inquiries, ensuring IDOR's presence in this key area.
Buying Intent Signals for Illinois Department of Revenue
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Executive Team of Illinois Department of Revenue
As of April 2025, Illinois Department of Revenue' leadership includes:
Investors of Illinois Department of Revenue
Illinois Department of Revenue has been backed by several prominent investors over the years, including:
Executive New Hires/Exits in the Last 12 Months
Specific executive hires or exits at the Illinois Department of Revenue are typically part of governmental appointment processes or standard civil service transitions, rather than highly publicized corporate-style announcements. Director David Harris has served since 2019. For the most current information on leadership, including any recent changes at the executive level, referring to the official Illinois Department of Revenue website or official state government announcements is recommended. No major, widely publicized executive team changes have been noted in the last 12 months outside of standard operational adjustments.
Technology (Tech Stack) used by Illinois Department of Revenue
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Illinois Department of Revenue Email Formats and Examples
The Illinois Department of Revenue, consistent with other Illinois state agencies, generally utilizes a standardized email format for its employees. The most common structure is the employee's first name followed by a period, then their last name, and finally '@illinois.gov'. Variations may exist for common names or specific roles, potentially including a middle initial.
[first].[last]@illinois.gov
Format
jane.doe@illinois.gov
Example
90%
Success rate
News and media
Illinois.gov News • February 27, 2024
Illinois Department of Revenue Collects Over $36 Million From MPEA Food And Beverage Tax Evaders
The Illinois Department of Revenue (IDOR) announced it has collected over $36 million through a criminal restitution order against thirteen defendants who systematically underreported sales to evade paying MPEA Food and Beverage taxes for their restaurant operations at Navy Pier, McCormick Place, and other MPEA-governed locations....more
tax.illinois.gov (IDOR Official Website) • January 18, 2024
IDOR Announces Start of 2024 Tax Season; Individual Income Tax Returns Accepted Starting January 29
The Illinois Department of Revenue (IDOR) announced that the 2024 tax season will officially begin, and individual income tax returns will start being accepted on Monday, January 29, 2024. This aligns with the opening date set by the Internal Revenue Service (IRS) for the federal tax season....more
tax.illinois.gov (IDOR Official Website) • October 26, 2023
Governor Pritzker and IDOR Announce $50 Million in Relief for Illinois Taxpayers Through Penalty Forgiveness Program
Governor JB Pritzker and the Illinois Department of Revenue (IDOR) announced a new penalty relief program, offering approximately $50 million in forgiveness for taxpayers who meet certain criteria. The program aims to provide financial relief and encourage voluntary tax compliance....more
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