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Illinois Audit, Tax and Consulting
The fifth largest in Illinois
With eight offices and more than 1,400 professionals throughout the state, we’re not only the fifth-largest accounting firm in Illinois, but also the largest focused on middle market companies. We combine full-service capabilities with deep resources, industry knowledge and senior-level involvement to help our clients succeed. Illinois is also home to RSM’s corporate headquarters, located at One South Wacker Drive in Chicago.
Our client service
Our Illinois offices serve midsized businesses in a variety of industries, including manufacturing and wholesale distribution, financial institutions, health care, real estate, private equity groups, financial services, government entities and nonprofit organizations.
Our charitable efforts
In addition to serving the needs of our clients, our Illinois offices are committed to serving the needs of our community. Through the personal and collective efforts of our professionals, we are actively involved by devoting time, money and support to a variety of charitable organizations and community efforts. Some of the representative organizations include the Greater Chicago Food Depository, YMCA, Big Brothers Big Sisters, The Salvation Army and Special Olympics Illinois.
Employment opportunities
For information about the employment opportunities currently available in Illinois, please visit the Careers section of our site.
Illinois Insights
Chicago provides narrow guidance on Wayfair economic nexus
A new nexus safe harbor is available for remote sellers making under $100,000 of sales to Chicago customers in the previous four quarters.
2020 Elections: State and local tax ballot measures to know
Looming budget shortfalls coupled with tax-related ballot measures in many states could significantly affect 2021.
Illinois tax tribunal: company president liable for withholding tax
President held personally liable for unpaid income tax withholding even after another corporate officer found responsible.
Middle market relief for businesses impacted by the coronavirus
Widespread availability of credits and economic incentives during the COVID-19 pandemic may help businesses increase cash flow.
Illinois sales tax ruling on financial services software and services
Financial services businesses providing software and services to Illinois customers may have multiple transaction tax obligations.
Illinois enacts demographic reporting for public companies
Publicly traded companies located in Illinois may be subject to new demographic reporting requirements by Jan. 1, 2021.
Illinois enacts mobile workforce legislation
Beginning in 2020, some individual taxpayers working remotely in Illinois will have a 30-day safe harbor from the state income tax.
Illinois enacts new apprenticeship tax credit
Senate Bill 1591 provides an income tax credit for qualified apprentice education expenses through Dec. 31, 2024.
Illinois enacts broad tax changes
The 2019 legislature passed several tax changes, issued marketplace facilitator rules and provided additional credits and incentives.
Strategies to maximize R&D for automotive companies
The ability of automakers and suppliers to include tooling expenses in their R&D credit can create a tremendous benefit.
Illinois Locations
Corporate Headquarters
30 S Wacker Dr
Suite 3300
Chicago, IL 60606
312.634.3400
John Bird, Chicago market leader
John George, Chicago market leader
Pete Mulvey, Chicago market leader
Paul Nockels, Chicago market leader
Champaign
2021 S. 1st Street
Suite 110
Champaign, Illinois 61820
217.352.9100
John Kaiser, Central Illinois market leader
Galesburg
117 East Main St.
Suite 210
Galesburg, IL 61401
309.342.1175
John Kaiser, Central Illinois market leader
Peoria
401 Main St.
Suite 1200
Peoria, IL 61602
309.671.8700
John Kaiser, Central Illinois market leader
Rockford
1252 Bell Valley Road
Suite 300
Rockford, IL 61108
815.231.7400
Pat Shaw, Rockford office leader
Schaumburg
20 N. Martingale Road
Suite 500
Schaumburg, IL 60173
847.517.7070
Rob Stoettner, Schaumburg market leader
Springfield
3161 West White Oaks Drive
Suite 204
Springfield, IL 62704
217.789.7700
John Kaiser, Central Illinois market leader
Careers in Illinois
Search open positions in Illinois, or learn more about working at RSM.
Still a student? Learn more about our Internships.
Illinois Events
2019 Illinois Government Finance Officers Association conference
Join us for the 2019 Illinois Government Finance Officers Association (IGFOA) annual conference, Sept. 8-10, 2019.
United Fresh 2019
FreshTec 2019 features networking, education, and a product showcase with produce operations and fresh-cut processing executives.
RSM Technology Summit Chicagoland
The RSM Technology Summit is a one-day event that offers educational sessions specifically for Microsoft Dynamics GP users.