Client Testimonial: Thornton Township


"John Kasperek Co., Inc. has provided Thornton Township with expert guidance and financial oversight over the course of several engagements. Their comprehensive audit services have helped the largest township in the State of Illinois to exceed our fiduciary responsibilities, providing the highest level of transparency and accountability that our taxpayers deserve. 

John Kasperek and his team have a supreme understanding of the complexities of township funds and the laws governing tax levies. Their extensive experience working almost exclusively with municipal and local units of government serves our township administration and board well throughout the year. John Kasperek Company is a highly trusted certified public accounting firm in the south suburban community with a reputation that has been established through many years of proven results."

--Frank M. Zuccarelli, Supervisor, Thornton Township

Client Testimonial: Bullseye Lounge

IMG 0317Pictured: Owner Wally Hummel and son Donny Hummel at Bullseye Lounge

For Bullseye Lounge owner Don “Wally” Hummel, 58, running a tavern is a “family tradition.” His father, uncle and grandfather all owned various establishments throughout the Chicago Southland and Northwest Indiana region dating back over 60 years. 

"I had previous issues with my accountants, and I can honestly say the best choice I made in by business life was going to John and his team. Working with John Kasperek Co., Inc. was a 100% turnaround for the business. Over the years, John has answered any and every question I had and is always available to give me advice. His team has been phenominal and has really grown over the years and their Senior Tax Associate Glenda Britt [CPA] is excellent. I would recommend John Kasperek Co., Inc. to anyone who is looking for accounting, tax or consulting services - you just can't take having the right accountant for granted."

--Wally Hummel, Bullseye Lounge

Client Testimonial: Calumet Memorial Park District


Pictured: Charles Dockery helping young gardener.

"On behalf of Calumet Memorial Park District, we are very pleased with the accounting services provided by John Kasperek Co., Inc. John has served as our Treasurer for many years and his firm has assisted the Park District in a variety of consulting capacities. John and his staff have a unique high level of expertise in public accountancy.

They have a working knowledge of the ever-changing standards, and they take the time to share critical information and educate staff during the course of their work. John Kasperek Co., Inc. has a proven track record for quality, efficiency and trust, and I would recommend that any unit of local government consider utilizing their services for your accounting or auditing needs."

-- Charles L. Dockery, Executive Director

Client Testimonial: Lansing Elementary School District #158


Following the reapproval of John Kasperek Co., Inc. to perform Lansing Elementary School District 158's audit for 2017, Business Manager Mark Crotty said a colleague from another district asked him what Kasperek was charging D.158 and what services were included. 

“They said ‘Wow, you got a great deal,'” Crotty said. “Ours is approximately 20 percent less than most of the other districts."

--Mark Crotty, School District 158, via THE TIMES, April 21, 2017

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  • Our Offices & Hours

    Our Offices & Hours

    John Kasperek Co., Inc.’s Corporate Office in Mokena is conveniently accessible from I-80 and Lagrange Road. JKC’s Calumet City Office is located near Torrence Avenue, I-80 and I-94. Our primary service area reaches throughout the Chicago Southland and Northwest Indiana region.

    Regular Office Hours: 8:30 a.m. - 5:00 p.m.

    JKC Offices will be closed on July 4-5, 2024, in obserance of Independence Day.

    We travel to our clients to provide services when and where they are needed.

    9980 190th Street, Unit A
    Mokena, IL 60448
    1471 Ring Road
    Calumet City, IL 60409
    (708) 862-2262
    This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Our Clients

    Our Clients

    Our client list at John Kasperek Co., Inc. features a wide range of significant audit work including local governments, townships, school districts, municipal pension funds, not-for-profit organizations and common interest real estate associations. In addition, we also serve a variety of small business S-Corporations, Partnerships and individuals.

    We are happy to provide contact information for referrals upon request. Here is a sample of our client list.

  • Our Staff

    Our Staff

    Our team at John Kasperek Co., Inc., Certified Public Accountants is dedicated to providing quality, personalized financial guidance to local government, not-for-profit organizations, businesses, corporations and individuals.

    Managing Partner John Kasperek, Jr. has developed our team of professionals with an excellent working knowledge of the accounting principles and current standards to provide the highest level of excellence to our clients. Well known throughout Chicagoland area for his diverse expertise in all aspects of accounting, John has built a thriving company that serves the critical needs of the south suburban and northwest Indiana region.

    Please feel free to reach out to John or the rest of our team at John Kasperek Co., Inc. any time for answers to your questions. Email This email address is being protected from spambots. You need JavaScript enabled to view it. or call (708) 862-2262.

  • Our News

    Our News

    In order to better serve our clients, partners, friends and colleagues, John Kasperek Co., Inc. will issue a new monthly digital newsletter with relevant financial and accounting information, changes to auditing standards and procedures, news and announcements from our firm. Please email This email address is being protected from spambots. You need JavaScript enabled to view it. if you would like to be added to our digital newsletter distribution list.

    Additionally, we recently created an informative, consumer-focused accounting blog titled Your Friends that Count that is posted online at and is distributed through Facebook and LinkedIn.

    We will post press releases, announcements and stories from our firm to our Newsroom page.